installation instructions for contractors gas condensing...

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Installation instructions for contractors

Gas condensing boilers

MGK-2-390MGK-2-470MGK-2-550MGK-2-630

Wolf GmbH • Postfach 1380 • D -84048 Mainburg • Tel. +49 (0)8751/74-0 • Fax +49 (0)8751/74-1600 • Internet: www.wolf-heiztechnik.deDocument no.: 3063772_201507 Subjecttotechnicalmodifications

GB (dt.)

2 3063772_201507

Table of contents1. Information about this document ......................................................................... 32. Safety instructions ..........................................................................................4 - 53. Dimensions ......................................................................................................... 64. Specification ........................................................................................................ 85. Boiler layout ........................................................................................................ 96. Casing ............................................................................................................... 107. Standards and regulations ......................................................................... 11 - 12

Installation 8. Handling / Installation instructions .....................................................13 - 15 9. Safety equipment...................................................................................... 16 10. Information about water treatment............................................................ 17 11. Boiler system pipework............................................................................. 18 12. Selection of circulation pumps .................................................................. 19 13. Gas connection......................................................................................... 20 14. Fitting the siphons .................................................................................... 21 15. Neutralising system (accessory)............................................................... 22 16. Neutralising system / Condensate pump (accessories) ........................... 23 17. Air/flue gas routing.............................................................................24 - 25

Control unit 18. Electrical connection..........................................................................26 - 31 19. Display/programming module / Installation............................................... 32 20. AM display module ................................................................................... 32 21. AM display module menu structure .......................................................... 34 22. Operating mode / Heating appliance burner status .................................. 35 23. BM2 programming module ....................................................................... 36 24. HG control parameters ............................................................................. 37 25. Parameter description .......................................................................38 - 47 26. Flue gas damper power supply ................................................................ 48

Cascade operation 27. Cascade operation ............................................................................49 - 51

Commissioning 28. Filling / draining the heating system ......................................................... 52 29. Commissioning ......................................................................................... 53 30. Checking the gas supply pressure ........................................................... 54 31. Changing the gas type / CO2 settings ................................................55 - 56

Specification 32. Commissioning report............................................................................... 57 33. Design information – air/flue gas routing .................................................. 58 34. Wiring diagram HCM2 /GBC-P ..........................................................59 - 60 35. Troubleshooting .................................................................................61 - 64 36. Troubleshooting warning messages ......................................................... 65 37. Sensor resistance table ............................................................................ 66 38. Technical parameters according to EU regulation no. 813/2013 .............. 67 Declaration of conformity .................................................................................. 68

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1. Information about this document

1.1 Other applicable documents

MGK-2 user operating instructionsMGK-2 maintenance instructionsSystem and operator's log

The instructions for all accessory modules and other accessories may also apply.

1.2 Safekeeping of these documents

The system user or operator should ensure the safekeeping of all instruction manuals and documents.

f Please pass these installation instructions and all other applicable instruction manuals on to the operator and/or system user.

1.3 Obligations of the operator

System operators must take active steps to fulfil their responsibilities regarding safe gas use. This applies to the commissioning of specialist companies to maintain the appliance. The system operator is obliged to provide documentation.

1.4 Applicability of these instructions

These installation instructions apply to the MGK-2 gas condensing boiler

1.5 Acceptance

Within four weeks of commissioning of the burner the operator must notify the local flue gas inspector accordingly.

1.6 Information about disposalWe are happy to accept the return of your old Wolf boiler free of charge at one of our delivery depots.

1 x MGK-2 gas condensing boiler, fully encased, assembled and wired2 x siphons with 3 condensate hoses and 1 tee1 x condensate trap1 x MGK-2 installation instructions for contractors1 x MGK-2 user operating instructions1 x MGK-2 maintenance instructions1 x system and operator's log

MGK-2 standard delivery

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2. Safety instructions

The following symbols are used in these instructions. This important information concerns personal as well as operational safety.

"Safety instructions" are instructions with which you must comply exactly, to prevent risks and injuries to individuals and damage to the boiler.Danger due to live electrical components.Please note: Turn OFF the ON/OFF switch before removing the casing.Never touch electrical components or contacts when the ON/OFF switch is in the ON position. This can result in a risk of electrocution that could lead to injury or death.The terminals are live even when the ON/OFF switch is in the OFF position."Caution" indicates technical instructions that you must observe to prevent boiler damage and malfunctions.

Caution

Fig: Ignition transformer, high voltage ignition electrode, gas combination valve, gas pressure switch, fan, combustion chamber.Danger from electrical voltage, escaping gas may cause poisoning or an explosion, risk of burning through hot components.

Danger if you smell gas- Close the gas shut-off valve.- Open the windows.- Do not operate electrical switches.- Extinguish naked flames.- Phone the gas supply utility company and approved

contractor from an external location.

Authorised personnel should read these instructions before any installation, commissioning or maintenance work. Observe the instructions given in this document. Failure to observe these installation instructions voids any WOLF warranty. In some countries, the installation of a gas boiler must be notified to and approved by the relevant gas supply company. Please note that regional permits may be required for the flue system and the condensate drain into the public sewer. Before installation work begins, the local flue gas inspector and water authority must be informed. The boiler must be installed, commissioned and maintained by qualified and trained personnel only. In accordance with VDE 0105 Part 1, work on electrical components (e.g. control unit) must only be carried out by qualified electricians. VDE/ÖVE regulations and those of your local power supply utility company are applicable to electrical installation work. Only operate the boiler within its output range, which is stated in the technical documentation supplied by WOLF. Intended use of the boiler refers to the exclusive use for hot water heating systems in accordance with DIN EN 12828. Never remove, bypass or otherwise disable any safety and monitoring equipment. The boiler must only be operated if it is in perfect technical condition. Any faults and damage with potential impact on safety and which might limit the safe use of the equipment must be remedied immediately by a qualified contractor. Only replace faulty components and equipment with original WOLF spare parts.

Working on the system- Gas systems: close the gas shut-off valve and ensure that

unauthorised reopening is prevented.- Isolate the system from the power supply (e.g. by removing

a separate mains fuse or by means of a mains electrical isolator, heating emergency stop switch) and check to ensure that there is no voltage.

- Safeguard the system against restarting.

Fig: Control boxDanger from electrical voltage

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2. Safety instructionsDanger if you smell flue gas- Switch OFF the boiler.- Open windows and doors.- Notify an approved contractor.

Inspection and maintenance- Recommendation for the customer: Take out an inspection

and maintenance contract with an approved contractor, including an annual inspection and demand-dependent servicing.

- The operator is responsible for the safety, environmental compatibility and energy quality of the heating system (German Immission Control Act / Energy Saving Ordinance).

- Only use genuine spare parts!

This appliance is not designed to be operated by persons (including children) with restricted physical, sensory or mental capacities or who lack the necessary experience and/or knowledge, unless they are supervised by a person responsible for their safety or have received instructions on how to use the appliance from this person.

We accept no liability for damage caused by technical modifications made to the control unit or the control system components.

These installation instructions must be kept in a safe place and read before installing the boiler. Please also observe the design information in the appendix.

Note

Information about disposal:We are happy to accept the return of your old Wolf boiler free of charge at one of our delivery depots.

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3. Dimensions

A = ventilation air pipe DN 200B = gas pipe 2"C = safety assembly connection 2"D = flow pipe DN 80E = return pipe DN 80F = BDF valve connectionG = flue pipe DN 250H = condensate drain

850(790 withoutcasing)

Can be split for transportation1295

1860

56514

6014

20

365

240 52

5

1290

1420

535

410

160

1180

1480

1700

85

85

C

D

EG

F H

A B

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4. SpecificationType MGK-2 390 470 550 630Rated heating output at 80/60 °C kW 366.7 434.7 511.6 584.4Rated heating output at 50/30 °C kW 392.0 467.1 549.3 626.6Rated heat input kW 371.2 443.6 521.0 593.9Low boiler output (modul.) at 80/60 °C kW 58.5 70.7 84.5 96.7Low boiler output (modul.) at 50/30 °C kW 64.2 78.7 94.0 106.8Low heat input (modulating) kW 59.5 73.2 86.8 98.5Heat input modulation range % 17-100 17-100 17-100 17-100Efficiency η 80/60 at Qmax % 98.8 98.0 98.2 98.4 η 50/30 at Qmax % 105.6 105.3 105.4 105.5 η TR30 at 30 % % 107.8 108.9 108.6 107.6Standard seasonal efficiency at 40/30 °C % 109.9 110.1 110.3 110.4

at 75/60 °C % 106.4 106.4 106.3 106.3

Overall height mm 1460 1460 1460 1460

Overall width mm1860

(1295 in sections)

1860(1295 in sections)



Overall depth / depth without casing mm 850 / 790 850 / 790 850 / 790 850 / 790Flue diameter mm 250 250 250 250Combustion air supply mm 200 200 200 200Heating flow DN 80 PN6 80 PN6 80 PN6 80 PN6Heating return DN 80 PN6 80 PN6 80 PN6 80 PN6Gas connection R 2" 2" 2" 2"Air/flue gas routing Type B23, B23P,

C33, C43, C53, C63, C83, C93

B23, B23P, C33, C43, C53, C63, C83, C93

B23, B23P, C33, C43, C53, C63, C83, C93

B23, B23P, C33, C43, C53, C63, C83, C93

Gas supply details:Natural gas E/H (Hi = 9.5 kWh/m³ = 34.2 MJ/m³) m³/h 39.1 46.7 54.8 62.5Natural gas LL (Hi = 8.6 kWh/m³ = 31.0 MJ/m³) m³/h 43.2 51.6 60.6 69.1

Gas supply pressure: Natural gas E/H/LL mbar 20 20 20 20Water content, heating water heat exchanger l 50 56 62 68Max. permissible boiler pressure bar 6 6 6 6Max. permissible flow temperature °C 85 85 85 85Available gas fan draught Pa 150 150 150 150

Standby losses excess temperature 30 / 50 K % 0.11 / 0.18 0.10 / 0.17 0.09 / 0.15 0.09 / 0.14

Flue gas temperature 80/60-50/30 at Qmax °C 65-35 65-35 65-35 65-35Flue gas temperature 80/60-50/30 at Qmin °C 60-30 60-30 60-30 60-30Max. flue gas volume flow g/s 156.3 185.2 225.3 247.4Flue gas category to DVGW G 635 G 52 G 52 G 52 G 52Heating water pressure drop at 20 K spread mbar 120 113 126 118

Electrical connection of MCB protection V~/Hz 1~ NPE / 230 V AC / 50 Hz / 10 A/BAlternative: 3~ PE / 400 V AC / 50 Hz / 10 A/B

Output heating circuit pump / ZHP fuse/MCB protection V~/Hz 1~ NPE / 230VAC / 50Hz / 4AAlternative: 3~ PE / 400 V AC / 50 Hz / 4 A

Power consumption (partial load / full load) W 42 - 410 45 - 490 48 - 580 50 - 660Standby power consumption W 11 11 11 11IP rating IP20 IP20 IP20 IP20Sound power to DIN EN 15036 Part 1, balanced flue dB(A) 61 66 68 68Sound pressure level 1 m upstream of MGK-2, balanced flue1) dB(A) 44 49 50 50Sound power to DIN EN 15036 Part 1, open flue dB(A) 78 82 84 84Sound pressure level 1 m upstream of MGK-2, open flue1) dB(A) 60 64 65 65Total weight (dry) kg 390 420 450 480Amount of condensate at 40/30 °C l/h 39 46 52 59Condensate pH value approx. 4.0 approx. 4.0 approx. 4.0 approx. 4.0CE ID 0085CN0326 0085CN0326 0085CN0326 0085CN0326

1) depending on the general system conditions, such as: type/version of the flue system, size and nature of the installation room

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4. Specification

Max. spread A cast section protection function is integrated in the MGK-2. This prevents stresses in the material by limiting the maximum temperature differential between the flow and return. As of 28 K, the output is reduced. If 40 K is nevertheless reached, the burner shuts down briefly without a fault message. This characteristic must be taken into account when selecting the components (e.g. pumps, heat exchanger and cylinder).

Flow rate Excessive flow velocities may lead to erosion. Maximum flow rate (volume flow) at Qmax:

MGK-2-390: 28.5 m³/h MGK-2-470: 34.4 m³/h MGK-2-550: 39.8 m³/h MGK-2-630: 45.5 m³/h

MGK-2 heating water pressure drop:

Hea

ting

wat

er p

ress

ure

drop

[mba

r]

Throughput [m³/h]

MGK-2-5

50

MGK-2-63

0

MGK-2-4

70

MGK

-2-3

90

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5. Boiler layoutWolf MGK-2-390/470/550/630 gas condensing boilers are adjusted at the factory for natural gas E and LL. The high performance heat exchanger is made from robust aluminium-silicon alloy with a high resistance to corrosion. The gas premix burner with gas-air mixture for modulating combustion from 17-100 % ensures extremely clean combustion with a standard seasonal efficiency [to DIN] of up to 110 % for highly efficient energy utilisation. The connections for the combustion air supply – for room sealed operation – and gas are on the top of the boiler. The flue gas, heating flow and heating return connections are on the side of the boiler. The removable burner hood guarantees easy access for servicing the gas-air mixing unit.Compact, space-saving installation right up against the wall with no clearance needed.Quick and easy installation thanks to pre-installed thermal insulation and casing, hydraulically and electrically ready to connect.Direct access to all components from the front, simple operation and maintenance.Integral attenuation minimises sound emissions, ideal for apartment buildings.

• Control unit fully wired; may be used for a wide range of heating system applications• Cascades with up to four gas condensing boilers provide an output range of up to

2.5 MW• No return temperature raising facility or minimum water circulation volume required• Additional 2nd HLSC already integrated in the device

The boiler is fully assembled and encased.The standard control unit includes a burner control unit, electronic ignition, ionisation flame monitor and output-dependent fan speed regulation.

Flue gas pressure switch Ignition electrode

Monitoring electrode

Round gauze burnerAdditional HLSC

Safety assembly 2" (accessory)

Gas combination valve with gas pressure limiter

Flue gas temperature sensorBDF valveWater pressure sensor

Gas fan

Mixing chamber

Ventilation air pipe DN200

Gas connection R2"

Flue outlet DN250

Connection R2" for safety assembly

Heat exchanger as a sectional design

Connection R2" for BDF set (accessory)Siphons with condensate drain

Flow connection DN80 / PN6

Boiler water temperature sensor

Return temperature sensorReturn connection DN80 / PN6

Temperature sensors eHLSC1 and eHLSC2

Layout MGK-2

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6. Casing

- Remove 3 screws on the top of the boiler.- Lift burner hood slightly and remove from boiler.

- Remove 2 screws on the right side casing of the boiler.- Tip right side casing forward and lift off.

Re-assemble in reverse order.

Re-assemble in reverse order.

Remove burner hood(e.g. for servicing the gas-air mixing unit)

Open side casing (e.g. to connect boiler to power supply):

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7. Standards and regulationsObserve all standards and guidelines applicable to the installation and operation of this heating system in your country. Observe the information on the boiler type plate.

The following local regulations must be complied with for installation and operation:• Regulations on installation conditions• Regulations on the ventilation air and exhaust air and the connection to a chimney• Electrical connection to the power supply• The technical regulations of the gas supply utility company regarding the

connection of the gas appliance to the local gas mains• The regulations and standards regarding the safety equipment of the water

heating system• DHW installation

The following general regulations, rules and guidelines must be observed for installation in particular:• (DIN) EN 1717 Protection of DHW against contamination in DHW installations• (DIN) EN 12831 Heating systems in buildings – procedure for calculating the

standard heat load• (DIN) EN 12828 Heating systems in buildings – designing hot water heating

systems• (DIN) EN 13384 Flue systems – heat and flow rate calculations• (DIN) EN 50156-1 (VDE 0116 Part 1) Electrical equipment in combustion systems• VDE 0470/(DIN) EN 60529 Protection through casings• VDI 2035 Prevention of damage in hot water heating systems - Scaling (sheet 1) - Corrosion in the primary system (sheet 2) - Corrosion in the flue system (sheet 3)

The following also apply to installation and operation in Germany:• Technical Regulations for Gas Installations DVGW-TRGI 1986/1996 (DVGW Code

of Practice G600 and TRF)• DIN 1988 Technical regulations for DHW installations• DIN 18160 Flue systems• DWA-A 251 Condensate from condensing boilers• ATV-DVWK-M115-3 Indirect discharge of non-domestic waste water

Part 3: Indirect discharge practice• VDE 0100 Regulations regarding the installation of high voltage systems with

rated voltages up to 1000 V• VDE 0105 Operation of high voltage systems, general stipulations• KÜO German Federal Sweeping and Inspection Act• Energy Savings Act (EnEG) and related ordinances• EnEV Energy Saving Ordinance (currently applicable version)• DVGW Code of Practice G637

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7. Standards and regulationsFor installation and operation in Austria, the following apply:• ÖVE regulations• Provisions of the ÖVGW and the corresponding Austrian standards• ÖVGV TR-Gas (G1), ÖVGW-RTF (G2)• Provisions of ÖVGW guideline G41 for condensate drainage• Local regulations of building and industry regulatory agencies (usually represented

by the flue gas inspector)• Local regulations of the gas supply utility company• Regulations and requirements of the local power supply utility company• Provisions of regionally applicable building regulations• Minimum heating water requirements in accordance with ÖNORM H5195-1 must be

observed

For installation in Switzerland, the following apply:• SVGW regulations• VKF regulations• BUWAL and local regulations must be observed• G1 gas guidelines• EKAS form 1942; LPG guideline Part 2

3063772_201507 13

8. Handling / Installation instructionsHandling • With ground conveyor vehicle:

With or without a pallet, the boiler can be handled easily using a pallet truck or forklift, as it can be lifted from any side.

Example:

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8. Handling / Installation instructions

Dimensions after separating:

• Can be lowered into the basement with a cable winch or chain hoist, secured to prevent it from sliding down on its own.

The gas condensing boiler can be separated into a gas-air mixing unit and heat exchanger unit measuring 790 mm x 1295 mm for easier handling.

- Remove the burner hood- Remove the gas-air mixing unit- Remove the retainer for the gas-air mixing unit

Example:

1295 mm790 mm

3063772_201507 15

• The boiler should be installed on a level surface which is substantial enough to carry its weight.

• The boiler must be level (level with adjustable feet).

The boiler must only be installed in a room that is protected from frost.If there is a risk of frost while the system is shut down, drain the boiler and the system components that are at risk to prevent pipes from bursting.

Boilers should not be installed in areas subject to aggressive vapours, very dusty or highly humid conditions (workshops, wash rooms, hobby rooms etc.). This prevents the optimum burner function from being achieved.

The installation room and the combustion air supplied to the boiler must be free from halogenated hydrocarbons (e.g. as contained in sprays, solvents, cleaning fluids, paints and adhesives). At worst these can lead to pitting of the boiler and even the flue system.

Never store or use combustible material or liquids near the boiler.

The ventilation air supply must be ensured and must comply with local regulations or those relating to gas installations. An insufficient fresh air supply can lead to flue gas escaping, which represents a risk to life (poisoning/suffocation).

A neutralising system for the condensate is a basic requirement and is available as an accessory.

Caution

Caution

8. Installation instructions

Fig: Boiler in the installation room

Different minimum clearances must be observed when installing the boiler in the installation room.

Minimum clearances:

Installation instructions

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9. Safety equipmentThe safety equipment for central heating systems must comply with DIN EN 12828. This standard applies to all hot water heating systems and heat generation systems with a maximum operating temperature of 105 °C and a maximum output of 1 MW.

Note: Provide a drain and fill valve at the lowest system point.

The minimum system pressure is 0.8 bar. The gas condensing boilers are approved exclusively for sealed unvented systems up to 6 bar (safety assembly accessories 3 bar). The maximum flow temperature is factory-set to 85 °C on the MGK-2 and may be adjusted to 90 °C if required.There is no need for a minimum throughput at maximum flow temperatures below 85 °C.

Equipment level to DIN EN 12828for MGK-2

Task Function MGK-2 installation location CommentsTemperature indicator (°C)

Display Integrated in boiler

High limit safety cut-out (HLSC)

Device to prevent flow temperature being exceeded

Integrated in the boiler,2nd HLSC integrated in boiler(eHLSC)

Second electronic high limit safety cut-out already integrated in boiler

Temperature controller Device to prevent flow temperature being exceeded

Integrated in boiler and set to 85 °C

Max. setting 90 °C

Low water indicator Low water indicator Device to prevent incorrect heating when water level or volume flow are insufficient

In flow line near MGK-2 Can be substituted by minimum pressure limiter.

Flow limiter Functions like low water indicator

Not required Replaced by maximum pressure limiter

Water level limiter Functions like low water indicator

Not required Replaced by minimum pressure limiter

Pressure measuring device (bar)

Display Integrated in boiler Integrated in safety assembly as accessory

Safety valve Facility to prevent permissible operating pressure being exceeded

Flow line near heat source Integrated as accessory (up to 3 bar) in the safety assembly

Maximum pressure limiter Devices for preventing the permissible operating pressure being exceeded

In flow line near MGK-2 2nd maximum pressure limiter that can be integrated in Wolf safety assembly (accessory)

Two can be installed as accessories in MGK-2 safety assembly accessory

Flash trap Facility to prevent permissible operating pressure being exceeded

Near safety valve or replaced by 2nd HLSC (already integrated) and 2nd maximum pressure limiter

Can be replaced by 2nd maximum pressure limiter and 2nd high limit safety cut-out

Expansion vessel diaphragm

Device to compensate for changes in water volume (external pressure maintenance)

Return line Expansion vessels should be able to be securely isolated and emptied for maintenance purposes

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10. Information about water treatmentThe system must be cleaned / flushed thoroughly before c o m m i s s i o n i n g a n d a s l u d g e f i l t e r / d i r t t r a p (e.g. Wolf accessory, <500 μm = 0.5 mm mesh width MW) installed in the return line. This must be in close proximity to the heating appliance and at the lowest position in the heating system.The fill and top-up water must only be treated with a desalination process. The "Maximum permissible total hardness" table shows the degree to which water treatment is required. The system water must not fall below a total hardness of 2°dH, which corresponds to conductivity of ≈ 60 μS/cm. The max. permissible total hardness and the corresponding max. conductivity are system-specific and must be calculated (see also "Maximum permissible total hardness" table). The desalinated water (conductivity <= 30 μS/cm) must not be mixed with untreated DHW. The addition of chemicals or de-scaling using single-stage ion exchangers is not permissible, as system damage due to water leaks may occur. We recommend regular emptying of the sludge filter. The operator must ensure that the heating system is maintained and serviced regularly to maintain its energy quality (see EnEV).

The Wolf system and operator's log for treatment of heating water must be kept in a safe place and made available by the owner / operator. It is provided along with these installation instructions.

Limits depending on the spec. system volume VS (VS = system volume / lowest individual output)Total hardness conversion: 1 mol/m³ = 5.6°dH

Tota

l he

atin

g ou

tput

VS ≤ 10 l/kW VS > 10 l/kW and < 40 l/kW VS ≤ 40 l/kW

Total hardness / total alkaline earths

Conductivity Total hardness / total alkaline earths

Conductivity Total hardness / total alkaline earths

Conductivity

[kW] [°dH] [mol/m³] C [μS/cm] [°dH] [mol/m³] C [μS/cm] [°dH] [mol/m³] C [μS/cm]

1* < 50 2 - 16.8* 0.36 - 3.0* 60 - 500 2 - 11.2 0.36 - 2.0 60 - 300 2 - 3 0.36 - 0.54 60 -100

2 50-200 2 - 11.2 0.36 - 2.0 60 - 300 2 - 8.4 0.36 - 1.5 60 - 200 2 - 3 0.36 - 0.54 60 -100

3 200-600 2 - 8.4 0.36 - 1.5 60 - 200 2 - 3 0.36 - 0.54 60 -100 2 - 3 0.36 - 0.54 60 -100

4 > 600 2 - 3 0.36 - 0.54 60 -100 2 - 3 0.36 - 0.54 60 -100 2 - 3 0.36 - 0.54 60 -100

*) for system boiler (<0.3 l/kW) and systems with electric heating elements

Gradual increase in the requirement for the spec. system volume (VS = system volume / lowest individual output) and the total heating output.

The total amount of fill water over the life cycle of the appliance must not exceed three times the nominal volume of the heating system.

Please note: The total hardness must not fall below 2°dH.

Treatment of heating water in accordance with VDI 2035:We recommend a heating water pH value of between 8.2 and 8.5, also in mixed installations with various materials.Request a water analysis from the water utility company. This must test whether the total hardness is sufficiently low.For a specific system volume of VS,specific >= 10 l/kW, the next lowest limit from the table below must be applied, for VS,specific >= 20 l/kW the next but one lowest limit, and for VS,specific >= 40 l/kW the lowest limit.For a specific system volume of >50 l/kW, the total hardness must be adjusted to 2-3°dH using a desalination process. This corresponds to conductivity of 60 - 100 μS/cm.If the heating appliance is integrated in the system without a hydraulic low loss header, the total hardness must be adjusted to 2 - 3°dH (conductivity = 60 - 100 μS/cm).

If the water is not treated, the warranty is voided.

Maximum permissible total hardness table:

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11. Boiler system pipeworkHeating flow and return are on the right-hand side of the boiler. Always provide shut-off valves for the flow and the return.Install a check valve downstream of the boiler circuit pump(s) to prevent incorrect circulation.For new systems we recommend installing a blow-down tank (or alternatively a dirt filter) into the return. For older systems this installation is compulsory.

Install a safety assembly comprising a safety valve with a response pressure of max. 6 bar, a pressure gauge and an automatic air vent valve.The line between the boiler and the safety valve must not be able to be shut off. Severely excessive boiler pressure due to excessive boiler water temperatures can burst the boiler body or the boiler pipework, which would lead to a sudden escape of hot water (risk of scalding).

When using pipes and climate-controlled floors that are not impermeable to oxygen, always provide system separation by means of a heat exchanger.

This boiler is only suitable for heating systems with pumped heating circuits. If no heating circuit pump has been installed, sufficient circulation through the radiators cannot be ensured and the room will not be heated.

Caution

Safety assembly 2" (accessory)

Ventilation air pipe DN200 Connection for room sealed operation

Gas connection R2"

Condensate trap with DN250 flue outlet

Test nipple for flue gas emissions test

Connection R2" for safety assembly

Connection R2" for BDF valve (accessory)Siphons with condensate drain

Flow connection DN80 / PN6

Return connection DN80 / PN6

3063772_201507 19

The MGK-2 is supplied without a circulation pump. The pump rate of the pump to be supplied by the customer must be determined depending on the system and boiler pressure drop. The fan's power supply and speed control are via the MGK-2 (see electrical connection).

The primary and secondary circuit pumps should generally have the same flow rate. The pumps shown below are designed for a spread of 20 K. If the spread on the secondary side is smaller, a larger pump must be selected on the primary side. The maximum flow rates under 4. Specification must be observed.

The following pumps are recommended for the assembly of an MGK-2 with low loss header.

12. Selection of circulation pumps

WiloNominal flow rate at 20 K

Spread [m3/h]

HE pressure drop at 20 K

Spread [mbar]Wilo type

Delivery head

[mbar]

Residual head [mbar]

Output [W]

Current [A] Connection

MGK-2 390 17.2 120 Stratos 50/1-2 770 650 590 2.6 1~230V

DN 50 flange fittingMGK-2

470 20.2 113 Stratos 50/1-12 680 567 590 2.6 1~230V DN 50 flange fitting

MGK-2 550 23.7 126 Stratos 65/1-12 730 604 800 3.5 1~230V

DN 65 flange fittingMGK-2

630 26.7 118 Stratos 65/1-12 655 537 800 3.5 1~230V DN 65 flange fitting

GrundfosNominal flow rate at 20 K

Spread [m3/h]

HE pressure drop at 20 K

Spread [mbar]

Grundfos Type

Delivery head

[mbar]

Residual head [mbar]

Output [W]

Current [A] Connection

MGK-2 390 17.2 120 Magna3

50-120F 730 610 540 2.4 1~230V DN 50 flange fitting

MGK-2 470 20.2 113 Magna3


MGK-2 550 23.7 126 Magna3


MGK-2 630 26.7 118 Magna3


• The maximum power consumption of the circulation pump must not exceed 4 A.

• Reductions from DN80/PN6 to DN/50 or DN65/PN6 are required for the hydraulic connection of the pumps.

• For the speed control of the circulation pump via the 0-10 V or PWM output of the boiler control unit, an extension module may be required from the pump manufacturer.

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13. Gas connectionWith the power supply disconnected, connect the gas supply line to gas connection R2" at the gas connection or the expansion joint (recommended) using the approved sealant.

Routing the gas pipe and making the gas connections must only be carried out by a licensed gas fitter.

Remove all residues from the heating pipework and the gas line prior to connecting the condensing boiler, particularly in older systems. Prior to commissioning, test all pipe and gas connections for leaks. Inappropriate installation or using unsuitable components or assemblies may lead to gas escaping, which results in a risk of poisoning and explosion.

Install a gas ball valve with fire protection in the gas supply line upstream of the Wolf condensing boiler. Otherwise explosions may occur during a fire. Size the gas supply line in accordance with DVGW-TRGI regulations.

Check the gas line for tightness without the boiler. Never release the test pressure via the gas valve.

Gas fittings on the appliance should be pressure tested to amaximum of 150 mbar.Higher pressure may damage the gas train, resulting in a risk of explosion, suffocation or poisoning. Close the gas ball valve on the gas condensing boiler to pressure test the gas line.

Mount the gas ball valve in an easily accessible place.

• Prior to installation, ensure that the boiler is set to the available gas type. At the factory, the boiler is set up for natural gas E/H 15.0: Ws = 11.4 - 15.2 kWh/m3 = 40.9 - 54.7 MJ/m3

Only commission the appliance when the rated supply pressure has been reached.

If the supply pressure for natural gas (flow pressure) lies outside the 18 to 25 mbar range, adjustments must not be carried out and the boiler must not be put into operation.

Caution

Gas connection R2"

3063772_201507 21

14. Fitting the siphons

Install siphons:Install the first siphon on the connector of the condensate pan.

Install the second siphon on the connector of the condensate trap.

Fi l l the s iphons wi th water pr ior to commissioning. Otherwise there is a risk of flue gas escaping.

Connect the condensate hoses of both siphons from the condensate pan and condensate trap with a tee and connect to the neutralising system.

Check tightness of the connections.

The standard delivery includes:

1 x condensate trap (under the burner hood on the ventilation air pipe)

2 x siphons with 3 condensate hoses and 1 tee (on the condensate trap)

Condensate connection:

Install condensate trap in the flue outlet of the condensate pan.Check tightness of the connections.

22 3063772_201507

15. Neutralising system (accessory)Installing the neutralising system with booster pump

The Neutrakon neutralising system type 08/BGN with booster pump for intensive pH regeneration, which is available as a Wolf accessory, can be slid under the boiler. Firstly remove the wooden slats for boiler transport. The booster pump can be mounted on the boiler crossbar.

Ensure even distribution of the granulate. The inlet and drain must not be covered with granulate.

Observe the installation and maintenance instructions supplied with the neutralising system.

Neutrakon neutralising system installation Type 8/BGN:

- Remove black plug-in strainers (transport safeguard) on the inlet and drain and fit hose connections with pipe strainer. HT pipe connection possible.

- Distribute the granulate evenly by shaking the Neutrakon. The granulate must not completely cover the inlet and drain (risk of blockage).

- Secure booster pump to the crossbar with Velcro strip.

- Fit air hose to the booster.

- Connect the booster cable with the plug on the cable set.

- Always fit the booster above the neutralising system to prevent condensate flowing into the booster.

The booster pump must always be installed higher than the neutralising system. Danger of electrocution!

Function check

The first fill of granulate lasts for at least one year with approx. 2000 hours of operation p.a., provided the system is operated correctly. To ensure smooth functioning, the neutralising system must be checked at least once a year.

1. Check fill level. If the granulate level is below the maximum mark (red label), it needs refilling.

Neutralisation can only take place when the water flows through the granulate. The granulate fill level must always be above the condensate level.

2. Measure pH value with pH indicator strip. if the pH value is below 6.5, the neutralising system needs servicing.

Booster pump mounted on crossbar

Neutralising system

Air hose

Booster and condensate pump connection (connections on cable set behind the strut)

Condensate lifting system


Wooden slat

3063772_201507 23

Servicing the neutralising system1. Release the connection fittings, detach the booster air hose,

disconnect the neutralising system from the inlet and drain and pull it out from under the boiler.

2. Loosen any granulate that is stuck together. Do not use sharp objects, as these may damage the casing. Discolouration of the granulate does not impair the neutralisation effect. If there is a large build-up of sludge or the granulate is very stuck together, completely replace the granulate.

Fill with fresh granulate up to the fill level indicated by the label.- Open hose clip (9) on the maintenance cover (8) and remove

cover.- Empty contents into a suitable container (e.g. bucket). Loosen soiled granulate and clean neutralising system with

water. (Do not use sharp objects, as these may damage the casing.)

- Fill the vertical pipes with granulate up to the fill level label (6).

- Fit maintenance cover (8) on the pipes and secure with pipe clip (9).

- Reconnect inlets and drains. Check for leaks.

Do not fill completely! In type 08/BGN neutralising systems, leave at least 4 cm of space above the granulate.

The inlet and drain openings must not be completely covered with granulate, or a blockage may occur.

3. Fit plug-in strainer (HT pipe DN40) and/or hose connection with pipe strainer, seal ring and slide ring and fasten the connection fitting.

Install neutralising system. Check connections for leaks.

DisposalGranulate residue can be disposed of in normal household waste.

Condensate lifting system (accessory)The Wolf condensate lifting system is fully wired and can be integrated into the MGK-2. The power supply and the alarm output of the condensate lifting system are connected to the cable set.Including 6 m PVC hose for draining off the condensate.

Please note:To fit the drain of the neutralising system directly into the inlet of the condensate lifting system, the pump and cover must be rotated by 180° in relation to their factory setting.

1 Air hose with non-return valve2 Neutrakon granulate GN3 Velcro strip4 Booster pump5 Min - Max label6 Fill level label7 Neutralising system casing8 Maintenance cover9 Hose clip, cover10 Hose clip, connection11 Pipe spout with strainer

16. Neutralising system / condensate pump (accessories)


230 V connection Leave at least

4 cm of space

Drain

Fill level label

Inlet

24 3063772_201507

17.Air/fluegasrouting

1) For type B23, the combustion air is drawn from the installation room (open flue gas combustion equipment). The combustion air supply must come from outdoors (cf. DVGW-TRGI).

2) Germany3) Austria / Switzerland

For type C, the combustion air is drawn through a sealed system from the outside (balanced flue gas combustion equipment). To allow this, the grille on the ventilation air pipe must be removed.

For type C and pressurised flue gas routing without special tightness requirements, a vent measuring 1x150 cm² or 2x75 cm² is needed in the installation room.

Connection typesBoiler type Gas boiler type

1)Category Operating mode Can be connected to

Open flue Room sealed

Moisture-resistant chimney

Balanced flue

chimney

Balanced flue

system

Building regulation approved flue pipe

Moisture-resistant flue

pipe

MGK-2 B23, B23P, C33, C43, C53, C63, C83, C93

I2ELL 2)

I2H 3)

Yes Yes C83 C43 C33, C53, C63

C53, C63 B23, C53, C83

Air/fluegasrouting

3063772_201507 25

Air/fluegasrouting

Single boiler system:

Implementation versions, condensing boiler Maximum length in metres, vertical

MGK-2 390 470 550 630

B23 Flue in a duct and combustion air directly via the boiler (open flue)DN160 *DN200DN 250

85050

-4050

-1950

-9

50

B33 Connection to a moisture-resistant flue gas chimney with horizontal connection line

DN250DN315

Calculation to EN 13384 (balanced flue manufacturer)

C33 Combustion air supply and flue gas routing via the roof in a common pressure range

DN250DN315


C33Vertical concentric roof outlet through a pitched or flat roof, vertical concentric air/flue gas routing for installation in a duct (balanced flue)

DN250/350DN315/400

3847

2738

1322

413

C43 Connection to a moisture-resistant balanced flue chimney (balanced flue)

DN250DN315


C53 Terminals of the combustion air and flue are in different pressure ranges (balanced flue)

DN200DN250

3550

2250

-50

-24

C53 Connection to flue on an external wall with horizontal eccentric connection line (length 2.5 m) (balanced flue)

DN200/300DN250/350DN315/400

3950-

2450-

-50-

-3450

C63 The flue gas system has not been tested and certified with the appliance. It must meet the building requirements of the relevant country.

DN250DN315


C83 Connection to a moisture-resistant chimney and combustion air through an external wall (balanced flue)

DN250DN315


C93

Vertical flue for installation in a duct with horizontal eccentric connection line, balanced flue ventilation air supply DN200. The terminals are in the same pressure range, combustion air supply via existing duct (edge length in mm)

DN250/250370x370

DN250/315450x450

DN315/315450x450

50

-

-

45

50

-

16

50

-

-

23

33

* Applies to horizontal connection line DN 200 with length of 2 m and an 87° bend (corresponds to 3 m effective length)

Comments:

• Length of connection line: 2 m, 1 additional 87° bend (corresponds to 3 m effective length) Duct cross-section = minimum annular gap to DIN 18160 Part 1

• Available fan draught: MGK-2: 10 - 150 Pa (maximum length corresponds to the total length from the appliance to the flue terminal)

Note:

• Systems C33 and C83 are also suitable for installation in garages.

• Where necessary, adapt the installation examples to the relevant Building Regulations and requirements in your country/region. Discuss any questions relating to the installation of inspection covers and ventilation air supplies with your local flue gas inspector.

• The length dimensions refer to concentric balanced flue systems and flues, specifically only to original Wolf components.

• The following balanced flues or flues with CE-0036-CPD-9169003 certification may be used: - Flue DN 160, DN 200, DN 250 and DN 315 - Concentric balanced flue DN 250/350 and DN 315/400

• The necessary identification labels are supplied with the Wolf accessory concerned.

• Please also observe the installation information supplied with the accessories.

17.Air/fluegasrouting

26 3063772_201507

18. Electrical connectionGeneral information, electrical connection

The installation must be carried out by a licensed electrical contractor. Observe VDE regulations and all local regulations of your power supply utility company.

For installation in Austria: The ÖVE regulations and requirements and those of your local power supply utility company must be observed.

An omnipolar isolator with at least 3 mm contact separation must be integrated in the power cable upstream of the boiler. A connection box must also be installed by the operator, as per ÖVE requirements.

Do not route sensor leads with 230 V mains cables.

Danger due to live electrical components. Please note: Turn off the ON/OFF switch before removing the casing.

Never touch electrical components or contacts when the ON/OFF switch is in the ON position. This can result in a risk of electrocution that could lead to injury or death.

The terminals are live even when the ON/OFF switch is in the OFF position.

During servicing and installation work, isolate the entire system from the power supply at all poles, otherwise there will be a risk of electrocution.

Either an AM display module or a BM2 programming module can be installed in the front panel for operating the boiler. The ON/OFF switch (integrated in the Wolf logo) switches the appliance OFF at all poles.

Front panel with integral ON/OFF switch

Control unit cover (under front casing) Cable entry

Service cover with eBUS connection for fault diagnosis (under front casing)

3063772_201507 27

Remove the cover of the control unit

Overview of components in the control unit

Remove the front casing (see "Casing" chapter), then remove the 4 screws on the control unit with a screwdriver.

18. Electrical connection

HC

M-2

con

trol u

nit

GB

C-P

Terminals

Fine-wire fuse

Terminals

Cable conduit

Bur

ner c

ontro

l uni

t

Remove the HCM-2 casing cover

28 3063772_201507

Power cable inlet 230 V or 400 V

Cable inlet 0-10 V

eBUS

T_DHW (5kNTC cylinder sensor)

T_outside (5kNTC outside temperature sensor)

E2 (5kNTC header sensor = low loss header; alternatively 0-10 V control e.g. 8 V = 80 % heating output)

E1 (programmable input e.g. flue gas damper or room thermostat)

A1* (programmable output)

LP* (cylinder primary pump)

ZHP (internal wiring of heating circuit pump)

Z1* (230 V output when ON/OFF switch is in the ON position)

Power supply (internal wiring)

* Max. 1.5 A / 345 VA per output, no more than 600 VA in total for all outputs

Connections in the control unit

F1

PE

N

L3

L2

L1

PE

N

L3

L2

L1

3

2

1

5

4

K1

K2

220V

/

400V

Power supply 230 V / 400 V AC 50 Hz

ZHP connection, feed/heating circuit pump 230 V / 400 V AC 50 Hz max. 4 A

External safety circuit (jumper)

Variable speed pump connection (0 - 10 V DC / PWM)


X1

X2

UPM PWMGNDUPM 0-10 V

230

V/

400

V

3063772_201507 29

18. Electrical connectionBoiler connection (230 V/400 V):

The control, regulating and safety equipment are fully wired and tested.You only need to connect the power supply, the heating circuit pump and the external accessories.Create a permanent connection for the power supply.Provide the power supply via a mains isolator (e.g. heating emergency stop switch) that ensures at least 3 mm contact separation for all poles.

Installation information, electrical connection, mains

- Isolate the system from the power supply before opening.- Check that the appliance is isolated from the power supply.- Open the front casing and the cover of the control unit.- Open the upper cable conduit and the lower casing cover of the HCM-2.- Ensure separation of the LV and ELV side.- Strip approx. 70 mm insulation off the power cable.- Depending on the heating circuit pump used (230 V/400 V), lay a

3-core or 5-core power cable through the strain relief on the right hand side of the appliance and in the cable conduit to the series terminals.

- Terminate wires at the series terminals as shown in the wiring diagram. Leave the wires for the earth conductor gr/ye approx. 10 mm longer than those for L (L1, L2, L3) and N.

- Close the cable conduits and the cover of the control unit.

F1

PE

N

L3

L2

L1

PE

N

L3

L2

L1

3

2

1

5

4

K1

K2

220V

/

400V

Fig: Mains connection

Installation information, electrical connection, heating circuit pump

- Isolate the system from the power supply before opening.- Check that the appliance is isolated from the power supply.- Open the front casing and the cover of the control unit.- Open the upper cable conduit and the lower casing cover of the

HCM-2.- Ensure separation of the LV and ELV side.- Strip approx. 70 mm insulation off the power cable.- Depending on the heating circuit pump used (230 V/400 V), lay a

3-core or 5-core power cable for the heating circuit pump through the strain relief on the right hand side of the appliance and in the upper cable conduit to the series terminals.

- Ensure separation of the LV and ELV side.- Terminate wires accordingly at terminals X1-L1/L2/L3/N/PE. Leave

the wires for the earth conductor gr/ye approx. 10 mm longer than those for L (L1, L2, L3) and N.

- When using a variable speed pump, route the signal line through the lower cable conduit.

PWM-controlled pumps must be connected to terminals X2-3 and X2-2(GND). Connect pumps with a 0-10 V control to X2-1 and X2-2.

- Close the cable conduits and the cover of the control unit.

F1

PE

N

L3

L2

L1

PE

N

L3

L2

L1

3

2

1

5

4

K1

K2

220V

/

400V

Fig: Connection, heating circuit pump

UPM PWMGNDUPM 0-10 V

X2

X1

230

V/

400

V

Connection output A1 (230 V AC; max. 1.5 A) *

Insert and secure the connecting cable through the cable gland. Connect the connecting cable to terminals L1, N and .The parameters for output A1 are described in the table.


Fig: Connection output A1

30 3063772_201507


Connection output primary pump (230 V AC; max. 1.5 A)

Insert and secure the connecting cable through the cable gland. Connect the connecting cable to terminals L1, N and .


Fig: Connection output LP

Connection output Z1 (230 V AC; max. 1.5 A) *

Insert and secure the connecting cable through the cable gland. Connect the connecting cable to terminals L1, N and .


Fig: Connection output Z1

Changing the fuse (HCM-2)

Isolate the condensing boiler from the power supply before changing a fuse.The ON/OFF switch on the boiler does not provide separation from the power supply.The fuse is located under the top casing cover of the HCM-2.Danger due to live electrical components. Never touch electrical components or contacts as long as the condensing boiler has not been isolated from the power supply. Risk to life.

Changing the fuse (booster fuse)

- Isolate the gas condensing boiler from the power supply before changing a fuse. The ON/OFF switch on the boiler does not provide separation from the power supply.

- Danger due to live electrical components. Never touch electrical components or contacts as long as the gas condensing boiler has not been isolated from the power supply. Risk to life.

Low voltage boiler connection:

Connection input E1

Insert and secure the connecting cable through the cable gland. Connect the connecting cable for input 1 to terminals E1 in accordance with the wiring diagram; first remove the jumper between 1 and 2 from the respective terminals.

Fig: Connection input E1

No external voltage must be connected to input E1, as this could would destroy the control PCB.

Caution

Fuse F1 3.15 A

Fig: Booster fuse

F1

PE

N

L3

L2

L1

PE

N

L3

L2

L1

3

2

1

5

4

K1

K2

220V

/

400V

T 3.15 A

Fig: HCM-2 fuse change

Netz

N

L1

Z1

N

L1

A1

N

L1

ZHP

NL1 L1

LP

N

Fuse 5x20

HCM-2T4AM4A

3063772_201507 31


Connection, outside temperature sensorThe outside temperature sensor can only be connected to the terminal strip of the AF condensing boiler connection or the terminal strip of the control accessories, provided a BM2 programming module has been fitted.

Fig: Connection, outside temperature sensor

When installing the appliance in places where there is a risk of high electromagnetic interference, it is advisable to fit shielded sensor and eBUS cables. The cable shield should be connected at one end to the PE potential in the control unit.

Caution

Connection, digital Wolf control accessories (e.g. TM2, MM, KM, SM1, SM2)Only connect control units from the Wolf accessory range. Each accessory is supplied with its own connection diagram.Use a two-core cable (cross-section > 0.5 mm²) as the connecting cable between the control unit accessory and the condensing boiler.

Fig: Digital Wolf control accessories connection (eBUS interface)

When installing the appliance in places where there is a risk of high electromagnetic interference, it is advisable to fit shielded sensor and eBUS cables. The cable shield should be connected at one end to the PE potential in the control unit.

Caution

Low voltage boiler connection:

Connection input E2

Insert and secure the connecting cable through the cable gland. Connect the connection cable for input 2 to terminals E2 as shown in the wiring diagram.

Fig: Connection input E2

Only one external voltage of max. 10 V can be connected to input E2, otherwise the control PCB will be destroyed. 1(a) = 10 V, 2(b) = GND

Caution

F1

PE

N

L3

L2

L1

PE

N

L3

L2

L1

3

2

1

5

4

K1

K2

220V

/

400V

Fig: Connection of external safety circuit

External safety circuitfloatingcontact(jumper)

X2

Installing the electrical connection of the external safety circuit

An external safety circuit (e.g. maximum pressure limiter) can be connected to the floating contact. Lockout for as long as the contact is open.

- Isolate the system from the power supply before opening.- Check that the appliance is isolated from the power supply.- Open the front casing and the cover of the control unit.- Open the upper cable conduit and the lower casing cover of the

HCM-2.- Remove the jumper at terminals X2-4 and X2-5.- Push the potential-free connecting cable of the external component

through the strain relief on the right-hand side of the appliance and lay it in the lower cable conduit to the series terminals X2.

- Ensure separation of the LV and ELV side.- Terminate wires accordingly at terminals X2-4 and X2-5.- Close the cable conduits and the cover of the control unit.

32 3063772_201507

19. Display / programming module / installation

Either an AM display module or a BM2 programming module must be installed for operating the MGK-2.

The BM2 (programming module) communicates with the heating appliance and all connected extension modules via eBUS.

Specification:• Colour display 3.5", 4 function buttons, 1 rotary

selector with push-button function• Micro SD card slot for software update• Central programming unit with weather-

compensated flow temperature control• Time program for heating, DHW and DHW

circulation

The AM functions solely as a display module for the heating appliance. Heating appliance-specific parameters and values can be programmed and displayed.

Specification:• LCD display 3"• 4 quick start buttons• 1 rotary selector with push-button functionNB:• Use when BM2 is used as a remote control or

in a cascade circuit• AM is always in the heating appliance

Switch ON power supply / activate MCB and switch ON/OFF switch to ON on the MGK-2.

Insert the AM or BM2 in the slot above the ON/OFF switch (Wolf logo). Both modules can be plugged into this slot. Further commissioning or address assignment measures specific to the BM2 can be found in the BM2 installation instructions.

Remove the front panel of the MGK-2 and refit it after installation of the module.

ON/OFF switch

AM BM2

Operating mode Heating modeBurner status ON

Status

14:12 20/01/2013

1.5 bar

25.2 °C

1x

Boiler temperature

Heating appliance

Heating mode

Pressure

Burner ON

3063772_201507 33

20. AM display moduleOverview AM

Operating mode Heating modeBurner status ON

Status

Status display

Rotary selector with push-button function

Quick start buttons

Button 1

Button 2

Button 3

Button 4

Burner ON

Heating appliance pump ONHeating appliance in heating mode

Note:If your Wolf heating appliance does not have an AM display module, ignore this page.Other functions and descriptions can be found in the installation instructions for contractors or the user operating instructions for the AM display module.

Heating appliance set temperature(if BM2 as remote control - no function)

DHW set temperature(if BM2 as remote control - no function)

Enable emissions test mode(for chimney sweep only)

Acknowledge fault / End / Back

Button 1

Button 2

Button 3

Button 4

34 3063772_201507

21. AM display module menu structure

AM control unit menu structure

Heating appliance

Boiler temperature

System pressure

Main menu

Back

Displays

Default settings

Emissions test

Contractor

Back

Notification

Display of faults or

notifications(see chapter 10)

Status

Operating mode

Burner status

Default settings

Back

Language

Button lock

Back

Emissions test

End

Rem. time in min.

T_boiler

T_return

Calibration

Extend time

End

Contractor

Contractor code1111

Back

Relay test

System

Parameter

Parameter reset

Fault history

Delete fault history

Acknowledge fault

Back

Displays

BackT_boiler in °C

System pressure in barT_flue gas current in °C

T_outside in °CT_return in °CT_DHW in °C

Input E1Fan speed rpm

Modulation level in %Actual I/O value

ZHP speedBurner starts

Burner hours runMains hours

Power ON countHCM2 firmware

Back

3063772_201507 35

22. Operating mode / Heating appliance burner status

Heating appliance operating mode

Display indication FunctionStart Start the appliance

Standby No heating or DHW demandHeating mode Heating mode, at least one heating circuit demands heatDHW mode DHW heating with cylinder, cylinder temperature is below set value

Emissions test Emissions test mode active, heating appliance running at maximum powerAntifreeze HC Boiler frost protection function, boiler water temperature below frost protection limit

Antifreeze DHW Frost protection function of DHW cylinder active, cylinder temperature below frost protection limit

Frost protection System frost protection active, outside temperature below frost protection limitHeating run-on Heating circuit pump run-on activeDHW run-on Cylinder primary pump run-on active

Parallel mode Heating circuit pump and cylinder primary pump active in parallelTest Relay test function has been activated

Cascade Cascade module in system activeBMS Appliance is controlled by building management system (BMS)

Heating appliance burner status

Display indication FunctionOFF No burner demand

Pre-flush Fan operation before burner startIgnition Gas valves and ignition unit are active

Stabilisation Flame stabilisation after safety timeSoft start After flame stabilisation in heating mode, the burner runs at low burner power for

the duration of the soft start to prevent cyclingON Burner operational

Cycle block Burner block after a burner cycle for the duration of the cycle blockOp without b. Operation without burner, input E1 closed

Flue gas damper Waiting for feedback from flue gas damper (input E1)dT too wide Temperature spread between boiler water temperature sensor and return

temperature sensor too widedT Tboil-eSTB Temperature spread between eHLSC1/eHLSC2 and boiler sensor too wide

Valve test Gas valve testGrad. control Boiler water temperature rising too fastGas pressure Gas pressure switch has not responded

Fault Burner not operational due to a faultPost-flush Fan operation after burner shutdown

36 3063772_201507

23. BM-2 programming module

1x DHW heating

Enable emissions test mode (for chimney sweep only)

Button 1

Button 2

Button 3

Button 4

1x

(in this view - no function)

(in this view - no function)

Overview BM2 Note:Other functions and descriptions can be found in the installation instructions for contractors or the user operating instructions for the BM2 programming module.

Button 1

Button 2

Button 3

Button 4 14:12 20/01/2013

1.5 bar

25.2 °C

1x

Boiler temperature

Heating appliance

Heating mode

Pressure

Status display

Page heading

Time Date

Rotary selector with push-button function

Display of system data (content varies)

Quick start buttonsOperating mode

Burner status

Burner ON

eBUS connection availableNo eBUS connection available

3063772_201507 37

24. HG control parametersModificationsmustonlybecarriedoutbyarecognisedheatingcontractororbyWolfcustomerservice. Incorrect operation can lead to system faults.

On the AM display module or the BM2 programming module, the factory setting for the HG parameters can be reinstated in the Contractor menu.To prevent damage to the heating system, cancel night setback when outside temperatures fall below-12°C.Ifthisruleisnotobserved,icemaybuildupontheflueoutletwhichmaycauseinjuryor material losses.

Caution

Caution

The control parameters can only be modified or displayed using the AM display module or BM2 programming module on the boiler. For procedures, check the operating instructions of the relevant accessories.

No. Description Unit Factory setting Min MaxHG01 Burner hysteresis °C 15 7 30HG02* Lower burner output, boiler

Minimum burner output% 19 19 100

HG03 Upper burner output, DHWMaximum burner output DHW in %

% 100 19 100

HG04 Upper burner output, heatingMaximum burner output, heating in %

% 100 19 100

HG07 Heating circuit pump run-on time Heating circuit pump run-on time in heating mode

Min 1 0 30

HG08 Maximum boiler water temperature HZ (applicable to heating operation) TV-max

°C 85 40 90

HG09 Burner cycle block, applicable to heating operation Min 10 1 30HG10 Heat source eBUS address - 1 1 5HG12 No function - - - -HG13 Function, input E1

Various functions can be allocated to input E1.- none div. div.

HG14 Function, output A1 (230 V AC) Various functions can be allocated to output A1.

- none div. div.

HG 15 Cylinder hysteresis, switching differential during cylinder re-heating

°C 5 1 30

HG16 Pump rate HC, minimum % 25 15 100HG17 Pump rate HC, maximum % 100 15 100HG19 SLP run-on time (cylinder primary pump) Min 3 1 10HG20 Max. cylinder heating time Min 120 30/Off 180HG21 Minimum boiler water temperature TK-min °C 20 20 90HG22 Maximum boiler water temperature TK-max °C 90 50 90HG25 Boiler excess temperature during cylinder heating °C 10 1 30HG33 Burner hysteresis runtime Min 10 1 30HG34 eBUS feed - Auto Off ONHG37 Pump control type (constant / linear / dT) - dT div. div.HG38 Set dT, pump control unit (dT) °C 20 0 40HG39 Soft start time Min 3 0 10HG40 System configuration (see chapter "Parameter description") - 1 div. div.HG41 Speed ZHP DHW % 100 15 100HG42 Header hysteresis °C 5 0 20HG43 No function - - - -HG44 No function - - - -HG45 No function - - - -HG46 Header excess boiler water temperature °C 6 0 20

* HG02 controls the fan speed 19 % - fan speed corresponds to 17 % burner output.

38 3063772_201507

25. Parameter descriptionParameter HG01Burner switching hysteresis

The burner switching hysteresis regulates the boiler water temperature within a set range by switching the burner ON and OFF. The higher the hysteresis, the higher the boiler water temperature fluctuation around the set value, resulting in longer burner runtimes and vice versa. Longer burner runtimes protect the environment and extend the service life of wearing parts.

Fig.:Time sequence of the dynamic burner switching hysteresis for a user-defined burner switching hysteresis of 15 °C and a selected hysteresis time (parameter HG33) of 10 minutes.

Burner runtime (min.)

Sw

itchi

ng h

yste

resi

s (°

C)

Set switching hysteresis 15 °C

Hysteresis time 10 minutes

Factory setting: see table chap. 24 Control unit parametersIndividual settings: ________

Parameter HG02Lower burner output

The setting for the minimum burner output (minimum device load) is applicable to all operating modes. This percentage value corresponds approximately to the real device output.

Parameter HG03Upper burner output DHW

The setting for the maximum burner output in DHW mode (maximum device load). Valid for DHW cylinder heating. This percentage value corresponds approximately to the real device output.

Parameter HG04Upper burner output HZ

The setting for the maximum burner output in heating mode (maximum device load). Valid for heating mode, BMS and emissions test. This percentage value corresponds approximately to the real device output.

7




3063772_201507 39

25. Parameter descriptionParameter HG07Run-on time, heating circuit pump

If there is no more heat demand from the heating circuit, the feed/heating circuit pump ZHP will run on in accordance with the set time to prevent a boiler safety shutdown at high temperatures.

Parameter HG08Maximum boiler water temperature HZ TV-max.

This function limits the boiler water temperature upwards in heating mode, and the burner shuts down. This parameter has no function during cylinder heating, and the boiler water temperature may also be higher during this time. "Reheating effects" can result in the temperature being slightly exceeded.

Parameter HG09Burner cycle block

Each time the burner is shut down in heating mode, it will be blocked for the duration of the burner cycle block. The burner cycle block is reset by switching the ON/OFF switch OFF and ON or by briefly pressing the reset button.

Parameter HG10eBUS address of the heat source

If multiple heat sources are controlled in one heating system with a cascade module, addresses must be allocated to the heat sources. Each heat source requires its own eBUS address in order to communicate with the cascade module. The activation sequence of the heat sources can be set in the cascade module.Please note: Duplicated addresses lead to malfunctions of the heating system.





40 3063772_201507

25. Parameter descriptionParameter HG13Function input E1

Display Description

none No function (factory setting) Input E1 is not taken into consideration by the control unit.

RT Room thermostat With open input E1, heating operation will be blocked (summer mode) and frost protection mode and emissions test mode will not be blocked, independent of any digital Wolf control accessories.

DHW DHW blocking/enabling With open input E1, DHW heating will be blocked, independent of any digital Wolf control accessories.

RT/DHW Heating and DHW blocking/enabling With open input E1, heating operation and DHW heating will be blocked and frost protection mode and emissions test mode will not be blocked, independent of any digital Wolf control accessories.

Timer Timer (DHW circulation button) If input E1 is configured as a DHW circulation button, output A1 is automatically set to "DHW circulation pump" and blocked for further settings. When input E1 is closed, output A1 is activated for 5 minutes. When input E1 has switched off and 30 minutes have elapsed, the timer function is re-enabled for the next operation.

Op without b.

Operation without burner (burner blocking) When contact E1 is closed, the burner is blocked.Heating circuit pump and cylinder primary pump continue running in standard mode.The burner is enabled in emissions test mode and in frost protection mode.Opening contact E1 enables the burner again.

Flue gasdamper

Flue gas damper/ventilation air damper Function monitoring of the flue gas damper/ventilation air damper with floating contact.Closed contact is a pre-requisite for enabling burner in central heating, DHW and emissions test mode.If input E1 is configured as a flue gas damper, output A1 is automatically programmed as a flue gas damper and blocked for other settings.

The functions of the input E1 can only be read and set directly on the boiler under parameter HG13 using the AM display module or BM2 programming module.

3063772_201507 41

25. Parameter descriptionParameter HG14Function output A1

The functions of the output A1 can only be read and set directly on the boiler under parameter HG14 using the AM display module or BM2 programming module.

Display Description

none none (factory setting) Output A1 is not taken into consideration by the control unit.

Timer100 DHW circulation pump 100 % Output A1 is controlled by the time program in the control accessory, if DHW circulation has been enabled. Output A1 is constantly activated when no accessory controller is installed.

Timer50 DHW circulation pump 50 % Output A1 is activated cyclically by the time program in the control accessory, if DHW circulation has been enabled. 5 minutes ON, 5 minutes OFF. Output A1 is constantly activated cyclically when no accessory controller is installed.

Timer20 DHW circulation pump 20 % Output A1 is activated cyclically by the time program in the control accessory, if DHW circulation has been enabled. 2 minutes ON, 8 minutes OFF. Output A1 is constantly activated cyclically when no accessory controller is installed.

Alarm Alarm output Output A1 is activated 4 minutes after a fault.

Flame Flame detector Output A1 is activated after a flame has been recognised.

Timer Timer (DHW circulation button) Output A1 is activated for 5 minutes when input E1 closes.If output E1 is configured as a timer, input E1 is automatically set to "Circulation tester" and blocked for further settings. When input E1 has switched off and 30 minutes have elapsed, the timer function is re-enabled for the next operation.

Flue gasdamper

Flue gas damper/ventilation air damper Output A1 is activated first before each burner start. The burner will, however, only be enabled after input E1 has been closed. Closed contact E1 is a pre-requisite for enabling burner in central heating, DHW and emissions test mode. If output A1 is activated and does not close input E1 within 2 minutes, a fault is generated (FC 8).If output A1 is deactivated and does not open input E1 within 2 minutes, a fault is generated (FC 8). If output A1 is configured as a flue gas damper, input E1 is automatically programmed as a flue gas damper and blocked for other settings.

Ext. vent. External ventilation Output A1 is switched inverse to the gas combination valve. Switching OFF external ventilation (e.g. extractor fan) during burner operation is only required if the boiler is operated as an open flue system.

External fuel valve

External fuel valve Activation of an additional fuel valve during burner operation.Output 1 is activated from pre-flushing of the device until burner shutdown.

42 3063772_201507

25. Parameter descriptionParameter HG15Cylinder hysteresis

The cylinder hysteresis regulates the start point for cylinder heating. The higher the setting, the lower the start point for cylinder heating.

Example: Set cylinder temperature 60 °C Cylinder hysteresis 5 K Cylinder heating commences at 55 °C and ends at 60 °C.

Parameter HG16Pump rate HC, minimum

In heating mode, the pump does not regulate below this set value. Independent of pump control type set in HG37.

Parameter HG17Pump rate HC, maximum

In heating mode, the pump does not regulate above this set value. Independent of pump control type set in HG37. If the pump control type is "Constant", HG17 is used as the setting for the pump speed in heating mode.

Parameter HG19LP run-on time (cylinder primary pump)

After completing cylinder heating in summer mode (the cylinder has reached the set temperature), the cylinder primary pump will run on up to the maximum set run-on time.The cylinder primary pump will switch OFF prematurely if, during the run-on time, the boiler water temperature cools down to a differential between boiler and set cylinder temperature of 5 K.In winter mode, the cylinder primary pump runs on for a fixed time of 30 seconds after successful cylinder heating (independently of parameter HG19).





3063772_201507 43

25. Parameter descriptionParameter HG20Max. cylinder heating time

Cylinder heating commences as soon as the cylinder temperature sensor demands heat. The heating circuit pumps would be constantly switched off if the boiler was undersized, the cylinder was scaled up or if DHW was constantly drawn off during DHW priority mode. The accommodation cools down significantly. To limit this effect, it is possible to specify a maximum cylinder heating time.If the set maximum cylinder heating time has expired, error message FC52 appears on the programming or display module.The control unit reverts to heating mode and cycles in the selected rhythm (HG20) between heating and cylinder heating mode, irrespective of whether the cylinder has reached its set temperature or not.The function "Max. cyl. heat time" remains active even if parallel pump operation is activated. If HG20 is set to OFF, the function "Max. cyl. heat time" is deactivated. Set this parameter to OFF in heating systems with a high DHW consumption, e.g. hotels, sports facilities etc.

Parameter HG21Minimum boiler water temperature TK-min

The control unit is equipped with an electronic boiler thermostat which has an adjustable minimum start temperature. The burner is switched on subject to the cycle block if this temperature is not achieved when heat is demanded. The minimum boiler water temperature TK-min is not necessarily achieved when there is no heat demand.

Parameter HG22Maximum boiler water temperature TK-max

The control unit is equipped with an electronic boiler thermostat which has an adjustable maximum shutdown temperature (maximum boiler water temperature). The burner is switched off if this temperature is exceeded. The burner will be started again when the boiler water temperature has fallen by as much as the burner switching differential.

Parameter HG25Excess boiler temp. for cylinder heating

The excess temperature differential between the cylinder temperature and the boiler water temperature during cylinder heating is selected with parameter HG25. The boiler water temperature continues to be limited by the maximum boiler water temperature (parameter HG22). This ensures that, even in spring and autumn, the boiler water temperature is higher than the cylinder temperature, thereby ensuring short heating times.





44 3063772_201507

25. Parameter descriptionParameter HG33Burner hysteresis runtime

When starting the burner or changing to heating mode, the burner hysteresis is set to the parameter "Burner switching differential" HG01. Based on this set value, the burner hysteresis within the set "Runtime burner hysteresis" HG33 is reduced to the minimum burner hysteresis of 7 K. This is designed to prevent short burner runtimes.

Parameter HG34eBUS feed

In the "Auto" setting, the power supply of the eBUS system is switched ON or OFF automatically by the control unit, depending on the number of available eBUS subscribers.

OFF = BUS feed is always switched OFFON = BUS feed is always switched ONAuto = the control unit switches the bus feed ON or OFF automatically

Parameter HG37Pump control type

For setting the type of pump speed control in heating mode and with BMS.

Constant = fixed pump speed (HG17) Linear = linear pump speed between HG16 and HG17 corresponding to

the current burner outputdT = speed control between HG16 and HG17 to achieve flow/return

temperature spread (HG38)

Parameter HG38Set dT pump control unit

If dT pump control unit is activated in parameter HG37, the set dT specified in HG38 applies. The change to the pump speed means the dT is regulated between flow and return within the speed limits in HG16 and HG17.

Parameter HG39Soft start time

In heating mode, the burner is run at a lower output for the set time after burner start.






3063772_201507 45

25. Parameter descriptionParameter HG40System configuration

The MGK-2 is fine-tuned to the heating system by selecting from 6 preconfigured system configurations that can only be read and set directly on the boiler under parameter HG40 using the AM display module or BM2 programming module. This parameter affects both the function of the ZHP (feed/heating circuit pump) and the input E2.

System configuration 11

Low loss header with header sensor• Burner is activated subject to demand from the header

temperature control• Feed/heating circuit pump (ZHP) activated as feed pump for

header demand• Header temperature control • Input E2: header sensor

ZHP SAFE2


Direct heating circuit on the boiler + optional further mixer circuits via mixer modules(factory setting)

ZHP

dHC

• Burner is activated subject to demand from the direct heating circuit or optionally connected mixer circuits

• Feed/heating circuit pump (ZHP) as heating circuit pump for direct heating circuit

• Boiler thermostat; set value is specified by heating circuit or mixer circuits

• Input E2: not assigned

Note: If the pressure drop of the boiler incl. the pipework is > 700 mbar, a low loss header must be installed.

MM 1System configuration 02

One or more mixer circuits via mixer modules (no direct heating circuit on the boiler)

• Burner is activated subject to demand from the connected mixer circuits

• Boiler thermostat; set value is specified by mixer circuits

• Input E2: not assigned• Feed/heating circuit pump (ZHP) not active



Plate heat exchanger as system separation• Burner is activated subject to demand from the header

temperature control• Feed/heating circuit pump (ZHP) activated as feed pump for

header demand• Header temperature control • Input E2: header sensor

ZHPSAFE2

46 3063772_201507

25. Parameter description

Important information:In these schematic diagrams, shut-off valves, air vent valves and safety equipment are not fully represented. These should be provided in compliance with the applicable standards and regulations for each individual system.Hydraulic and electrical details can be found in the Hydraulic System Solutions technical guide.


BMS burner output

E2

BMS%

ZHP

Burner is activated subject to demand from the external controller

• Feed/heating circuit pump (ZHP) activated as feed pump from 2 V upwards

• No temperature control • Input E2:

Control 0-10 V by external controller 0-2 V burner OFF, 2-10 V burner output min. to max. within the programmed limits (HG02 and HG04)

• Automatic output reduction when approaching TKmax (HG22) is activated. Deactivation on reaching TKmax



BMS set boiler temperature

ZHPE2

BMS°C

• Burner is activated subject to demand from the boiler thermostat

• Feed/heating circuit pump (ZHP) activated as feed pump from 2 V upwards

• Boiler thermostat • Input E2:

Control by external controller with 0-10 V 0-2 V burner OFF 2-10 V set boiler temperature TKmin (HG21) - TKmax (HG22)



Cascade for multi boiler systems (setting automatic when cascade module is connected)

• Burner is activated subject to demand from cascade module via eBUS (0-100 % burner output; min. to max. within the programmed limits) (HG02 and HG04)

• Feed/heating circuit pump (ZHP) activated as feed pump• Header temperature control via cascade module• Input E2: not assigned• Automatic output reduction when approaching TKmax (HG22)

is activated. Deactivation on reaching TKmax• A low loss header or plate heat exchanger can be used as

system separation.

ZHP SAFeBUS

KM

eBUSZHP

3063772_201507 47

25. Parameter descriptionParameter HG41Speed ZHP DHW

In DHW mode, the pump runs at this set value. Independent of pump control type set in HG37.

Parameter HG42Header hysteresis

The header hysteresis regulates the header temperature within the set range by switching the heat source ON and OFF. The higher the ON / OFF temperature differential, the higher the header temperature fluctuation around the set value, resulting in longer heat source runtimes, and vice versa.

Parameter HG46Header excess boiler water temperature

The excess temperature differential between the header temperature and the boiler water temperature during header heating is selected with parameter HG46. The boiler water temperature continues to be limited by the maximum boiler water temperature (parameter HG22).




48 3063772_201507

Flue gas damper power supply

- Isolate the system from the power supply before opening.- Check that appliance is isolated from the power supply.- Open the front casing and the cover of the control unit.- Strip approx. 70 mm off the connecting cable of the flue gas

damper motor and signal contact.- Lay connecting cable from the flue gas damper motor to the

screwless terminals, pushing it through the strain relief on the right-hand side of the boiler, and connect it to programmable output A1.

- Lay connecting cable from the limit switch to the screwless terminals, pushing it through the strain relief on the right-hand side of the boiler, and connect it to programmable input E1.

- Close cover of control unit.

26. Flue gas damper power supply

Note:The contractor parameterHG13 (input 1) must be set to Fl gas damp and HG14 (output 1) must be set to Fl gas damp.

When the limit switch is open, the burner is blocked both for DHW and central heating and for emissions test and frost protection.

A1 (programmable output)E1 (programmable input, e.g. flue gas damper)

HCM-2 electrical connection

Limit switchFlue gas damper motor

NB.Flue gas damper limit switch must be potential-free.Otherwise the MGK-2 control unit will be destroyed.

Damper function test

f Start the boiler. f Visual check to ensure damper is open. f Unplug E1 for 2 minutes during operation. Boiler must lockout with error code 8, with the fan continuing to run at low speed. Fault code 44 “Flu gas prssr swtch” may also appear.

f Reconnect E1. f Acknowledge fault message. f Visual check to ensure flue gas damper is closed.

During commissioning and as part of the annual heating appliance test, the cascade damper in overpressure heating appliance systems must be tested for tightness to ensure no CO2 can escape into the installation room.

3063772_201507 49

27. Cascade operationCascades(overpressure),openflue

The following basic principles are taken into consideration in all calculations for the sizing tables:

- Length between the individual appliances: 1.0 m - Length after the last appliance: 2.0 m - Pressure drops: 2 x 45° bends in the diameter of the header pipe (optionally as lateral offset or 90° diversion)

- Combustion air supply: from installation room - Duct ventilation: balanced flow principle - Geodetic height: 325 m

The following overview shows the maximum vertical flue length for open flue positive pressure cascades, with different boiler combinations:

Flue system design

MGK-2

VNominal diameter of connection line to the appliance

SNominal

diameter of header

ANominal

diameter of flue pipe, vertical

Ø / Minimum duct sizes

HAchievable height from duct inlet to duct outlet

round rectangular

390 2x row DN250 DN250 DN315 420 mm 400 mm 50 m3x row DN250 DN315 DN315 420 mm 400 mm 42 m4x row DN250 * * * * *

470 2x row DN250 DN250 DN315 420 mm 400 mm 50 m3x row DN250 DN315 DN315 420 mm 400 mm 17 m4x row DN250 * * * * *

550 2x row DN250 DN250 DN315 420 mm 400 mm 22 mDN250 DN315 DN315 420 mm 400 mm 50 m

3x row DN250 * * * * *4x row DN250 * * * * *

630 2x row DN250 DN315 DN315 420 mm 400 mm 23 m3x row DN250 * * * * *4x row DN250 * * * * *

* Calculation and design to EN 13384-2 – kit on request

A maximum back pressure up to 50 Pa must be maintained in the connection to the header line and must not be exceeded.Only use DIBt approved flue pipes.In cascade operation, a Wolf cascade controller is required.

2 ... 4

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27. Cascade operationThe standard settings of the Wolf cascade module can lead to cycling in very sluggish heating systems.For optimum cascade operation, we therefore recommend the following settings:

Parameter SettingKM10 20KM11 500

Cascade module setting

If the circulation and feed pump (ZHP) are controlled by the Wolf boiler control unit during operation with low loss header, the flow rates of the primary and secondary circuits may differ from each other.

If the secondary flow rate is much greater than the primary flow rate, this can lead to cycling of the boiler.

In this case, we recommend significantly increasing the minimum pump speed.To do this, increase parameter HG16 in 20 % steps.

The higher the set header temperature, the higher the pump speed that must be selected for the feed pump. Set header temperatures of more than 75 °C should be avoided if possible.

Pump speed setting

Setting the eBUS address in cascade mode

The eBUS address is set in the contractor menu HG10 on the AM display module or the BM2 programming module.

Boiler in cascade mode eBUS addressBoiler 1 1*Boiler 2 2Boiler 3 3Boiler 4 4

*Factory setting (individual boiler without cascade mode)

In cascade operation, the condensate pump must be connected externally with constant voltage, as the condensate flowing back cannot be discharged otherwise when the boiler is switched off (e.g. for boiler maintenance).

Caution

3063772_201507 51

27. Cascade operation

Fig: 2 - 4 boilers in the installation room, side by side

For general information on positioning, see also information on installation of individual system.Different minimum clearances must be observed when installing the boilers in the installation room.

Installation instructions

Motor-controlled flue gas damper to DIN 3388 Part 2 and DVGW G 635.For appliances in cascade systems that produce condensation and have no ignition flame.

Design:Sealed, condensate-resistant, for overpressure flue systems, stainless steel casing, stainless steel shaft, positioning lever for position indication, including actuator for 230 V AC current with return spring, integral fuse, protection rating to DIN 40050, IP 44, for flue gas temperatures up to 120 °C.

Mounting the flue gas damper:

- Switch the ON/OFF switch on the gas condensing boiler to OFF.- The mains terminals are live even when the ON/OFF switch has been switched OFF.

Isolate the system from the power supply, otherwise there is a risk to life from electrocution.

- Install flue gas damper in the flue outlet of the condensate pan. (Damper axis must be oriented upwards at an angle of 3 to 5° to the horizontal.)- Connect the cable from the limit switch to input E1.- Connect flue gas damper servomotor cable to output A1

(see "Flue gas damper power supply").- Set control unit to flue gas damper operation (see HG13/14).

- Install condensate trap in female connection of the flue gas damper.- Installation of siphon, neutralising system, condensate pump: see corresponding

chapter in the information on installing an individual system.

Flue gas damper installation

52 3063772_201507

28. Filling / draining the heating systemFill the system correctly in line with the information on water treatment and the system and operator's log, and vent it completely to ensure the smooth running of the condensing boiler.

Before connecting the gas condensing boiler, flush the heating system to remove residues such as welding pearls, hemp, putty, etc. from the pipework.

• The gas tap must be shut.

• Open the air vent valves.

• Open all heating circuits.

• Open all radiator or mixer valves.

• Slowly fill the entire heating system and boiler when cold, for example via the BDF valve at the return, to approx. 2 bar pressure.

Inhibitors are not permissible.

• Open the flow valves on the condensing boiler.

• Fill the heating system to 2 bar pressure. In operation, the pressure must be between 1.5 and 2.5 bar.

• Check the entire system for water leaks.

• Fill both siphons with water.

• Vent the heating circuit; to do this, switch the gas condensing boiler ON and OFF again several times.

• Top up with water when the system pressure falls substantially.

• Open the gas ball valve.

• Press the reset button on the AM or BM2.

Note: In constant mode, the heating circuit is automatically vented via the air vent valve (accessory).

Caution

Caution

• Switch off system (see operating instructions) and allow it cool to at least 40 °C, otherwise there is a risk of scalding.

• Safeguard the heating system against accidental reconnection of the power supply.

• Open drain valve (BDF valve), for example, on the boiler.

• Open the air vent valves on the radiators.

• Drain heating water.

Filling the heating system

Draining the heating system

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29. CommissioningOnly qualified personnel must carry out the commissioning and operation of the boiler and instruct the user.

• Check that the power supply has been switched OFF.

• Check the boiler and system for leaks. Prevent water leaks.

• Install AM display module or BM2 programming module in the boiler.

• Install / connect extension modules, if present.

• Check wiring of power supply, pumps, sensors and modules.

• Check location and seating of fitted components.

• Check all connections and component unions for leaks.

• Check that all flue gas accessories have been correctly installed.

• Open the shut-off valves in flow and return.

• Open the gas shut-off valve.

• Switch on the power supply.

• Switch the system ON/OFF switch on the control unit to ON.

• Check control parameters (e.g. system configuration HG40).

• If the system water pressure falls below 0.8 bar, top up with water until a pressure of 1.5 to max. 2.5 bar has been reached.

• Check the condensate drain.

• Familiarise customers with the operation of the boiler with the aid of the operating and installation instructions and advise them of the required water treatment for fill and top-up water.

• Complete the commissioning report and hand over the instructions to the customer.

Energy savings

• Instructthecustomeraboutenergysavingoptions.

• Referyourcustomertothesection"Informationforenergyefficientoperation"in the operating instructions.

54 3063772_201507

30. Checking the gas supply pressure

Check the gas supply pressure (gas flow pressure)

Work on gas components must only be performed by a licensed gas fitter. Work that is carried out incorrectly may lead to gas escaping, resulting in a risk of explosion, suffocation or poisoning.

• Switch ON/OFF switch on the appliance to OFF.

• Release the plug at the test nipple with two turns.

• Slowly open the gas shut-off valve.

• Bleed off escaping gas via a hydraulic seal until no more air escapes.

• Connect the differential pressure tester at the pressure test nipple to "+", with "-" against atmosphere.

• Switch the ON/OFF switch to ON.

After starting the boiler, check the supply pressure at the differential pressure tester.

• Switch the ON/OFF switch to OFF. Close the gas shut-off valve.

• Remove the differential pressure tester.

Re-seal the test nipple with the plug.

• Open the gas shut-off valve.

• Check the test nipple is gas-tight.

• Refit the burner hood.

If any screws are not tightened, there is a danger of gas escaping, leading to a risk of explosion, suffocation or poisoning.

Pressure test nipple

Country Appliance category

Supply pressure in mbar

Natural gas

Natural gas

Nom. Min. Max.EN I2ELL 20 18 25AT, BG, CH, CZ, DK, EE, ES, FI, GB, GR, HR, IE, IS, IT, LT, LV, NO, PT, RO, RU, SE, SI, SK, TR

I2H 20 18 25

LU I2E 20 18 25PL I2ELw 20 18 25BE I2E(R) 20/25 18 30FR I2Esi 20/25 18 30HU I2HS 25 18 30NL I2L 25 18 30

Countries, gas categories and connection pressures

If the supply pressure is outside the specified range, adjustments must not be carried out and the boiler must not be started.

Caution

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31. Changing the gas type, CO2 setting

Carry out the adjustments in the following sequence. At the factory, the gas combination valve has been set up for natural gas E (G20).

A) CO2 setting at the upper load (emissions test mode)

- Release the screws on the burner hood (top).

- Remove the burner hood.

- Remove screw from the test port of the condensate trap and insert measuring device.

- Press the "Emissions test" quick start button on the AM display module or BM2 programming module.

- At full load, measure the CO2 value, which should be 9.3 % ± 0.3 % for natural gas E/H/LL.

• If required, adjust the CO2 content at the gas combination valve with a screwdriver as shown in the picture.

Test port on the condensate trap

56 3063772_201507

B) CO2 setting at the lower load (soft start)

- Restart the gas condensing boiler.

- Approx. 30 seconds after burner start, check the CO2 content with the CO2 measuring instrument. This should be 9.1 % ± 0.3 % for natural gas E/H/LL and can be corrected with a 2.5 mm Allen button at the gas combination valve as shown in the picture.

- Perform this adjustment at minimum load (180 sec. after burner start).

- Repeat the start phase if necessary to perform the adjustment.

31. Changing the gas type, CO2 setting

2H - G20 - 20 mbar

2S - G25.1 - 25 mbar

2E - G20 - 20 mbar

2H - G20 - 20 mbar

2Ei - G25 - 25 mbar

2Es - G20 - 20 mbar

2H - G20 - 20 mbar

2H - G20 - 20mbar

2LL - G25 - 20 mbar

2E - G20 - 20 mbar2H - G20 - 20 mbar

Regolato per gas

Réglée sur

Beállítva

Réglée sur

Nastaveno na

Réglée sur

Ajustada a gas

Adjusted to

Eingestellt auf

Eingestellt auf

ITLUFR

HU

FR

CZ

ESGBDE

DE / AT

50/118610215

C) Completing the adjustments

- Shut down the boiler.

- Re-seal the test ports and check for tightness.

- Refit the burner hood.

- Screw in screws on the burner hood (top).

- Check the gas type on the type plate and change if necessary. If changed to natural gas LL, cut out label "Adjusted to LL - G25 - 20 mbar" and affix to the type plate.

3063772_201507 57

32. Commissioning report

Commissioning steps Testvaluesorconfirmation

1.) Gas type Natural gas E/H □Natural gas LL □Wobbe index _____________ kWh/m³Calorific value, heating _________ kWh/m³

2.) Gas supply pressure checked? □3.) Gas leak test carried out? □4.) Balanced flue system checked? □5.) Water connections checked for leaks? □6.) Siphon filled? □7.) System flushed? □8.) System filled and water treatment carried out in line with

"Design information, water treatment"? pH value set Total hardness set

□

________________ pH value________________ °dH

9.) No chemical additives (inhibitors, antifreeze) added? □10.) Boiler and system vented? □11.) System pressure 1.5 - 2.5 bar? □12.) Gas type and output entered on label? □13.) Function test carried out? □14.) Flue gas test

Gross flue gas temperature

Ventilation air temperature

Net flue gas temperature

Carbon dioxide content (CO2) or oxygen content (O2)

Carbon monoxide content (CO)

_____________ tA [°C]

_____________ tA [°C]

_____________ (tA - tL ) [°C]

_____________ %

_____________ ppm

15.) Casing fitted? □16.) System user trained, documentation handed over? □17.) Commissioning confirmed? _____________ □

58 3063772_201507

With low outside temperatures, the water vapour contained in the flue gas may condense and freeze on the balanced flue. This ice may fall from the roof causing injuries or material losses. Prevent ice from falling by taking on-site measures, e.g. installing a snow guard.

Secure the balanced flue or flue outside ducts with spacer brackets with a minimum clearance of 50 cm from the flue outlet or upstream/downstream of diverters to prevent the pipe joints being pulled apart. If this is not done, there is a danger of poisoning caused by escaping flue gas. Furthermore, boiler damage may result.

General notes

Where necessary, adapt the installation examples to the relevant building regulations and requirements in your country/region. Discuss any questions relating to the installation of inspection covers and ventilation apertures with your local flue gas inspector.

Flues inside chimney ducts must have secondary ventilation along their entire length and must terminate above the roof.

Flue gas cascades must be sized in accordance with EN 13384-2.

The requirements for installation rooms are specified in the building regulations or combustion equipment ordinances of the relevant countries. Also observe DVGW-TRGI 1986 regarding the room ventilation.

Flues outside ducts must not be routed through other installation rooms, otherwise there would be a risk of the transfer of fire and there would be no mechanicalprotection.

The combustion air must not be drawn from chimneys previously used to carry flue gases from oil or solid fuel boilers.

Caution

Original Wolf components have been optimised over many years and are designed for use with Wolf condensing boilers. If using third party equipment that is only CE-approved, the installer will be responsible for the correct sizing and perfect functioning of the system. Faults, material losses and injuries resulting from incorrect pipe lengths, excessive pressure drop, premature wear with escaping flue gas and condensate or incorrect functioning, e.g. through components working loose, are excluded from our warranty if CE-approved third-party equipment is used.

If the combustion air is drawn from the duct, the duct must be free from contamination.

ConnectiontoatypeC63combustionairandfluesystem that has not been tested together with the gas combustion equipment

The unobstructed cross-section of flues must be able to be inspected. Therefore, install an appropriate cleaning and/or inspection aperture inside the boiler room; agree suitable arrangements with your local flue gas inspector.

Flue connections are created using couplings and gaskets. Always arrange couplings against the direction of the condensate flow.

Install the ventilation air system / flue with a slope of at least 3° towards the gas condensing boiler. Spacer brackets should befittedtosecuretheequipmentinposition.In the worst case scenario, a lesser slope of thebalancedfluemay lead tocorrosionoroperating faults.

Connection to the ventilation air system and the flue

Always bevel or deburr trimmed flues to ensure gas-tight installation of pipe joints. Ensure that gaskets are correctly fitted. Remove all contamination prior to installation - never fit damaged parts.

Caution

To prevent flue gas escaping, a positive pressure flue cascade is only permitted with a tested flue gas damper (part no. 2484637).

When sizing flue systems in accordance with DIN EN 13384-2 (cascade), maintain a maximum overpressure of up to 50 Pa in the connection to the header line; this should also not be exceeded.

Caution

33. Design information Air/flue gas routing

Caution

As protection against contamination during the building phase, we recommend using the ventilation air filter part no. 8751390. The ventilation air filter is plugged onto the air intake. Keep the door of the condensing boiler shut during the building phase. After completing the building phase, remove the filter.

Caution

3063772_201507 59

Fan230 V AC

Mains filter

Heating circuit pump ZHP230 V AC/400 V ACmax. 4 A

Incoming supply230 V AC/400 V AC

Mounting plate front panel

Booster fuse

Pump contactor Mains contactor

Booster

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60 3063772_201507

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34. GBC-P wiring diagram

3063772_201507 61

35. TroubleshootingGeneral notes

Never remove, bypass or otherwise disable any safety or monitoring equipment. The boiler must only be operated if it is in perfect technical condition. Any faults and damage with potential impact on safety and which might limit the safe use of the equipment must be remedied immediately by a qualified contractor. Only replace faulty components and equipment with original Wolf spare parts. Faults and warnings are shown in plain text on the display of the control accessories – AM display module or BM2 programming module – and correspond to the messages listed in the following tables.A warning/fault symbol on the display (symbol: triangle with exclamation mark) indicates an active warning or fault message. A lock symbol (symbol: lock) indicates that the current fault message has caused a lockout of the boiler. The duration of the current message is also shown.

Warning messages do not need to be acknowledged and do not lead directly to the boiler being switched OFF. However, the causes of the warnings can lead to malfunctions of the boiler / system or faults and should therefore be repaired by an expert.

Caution

Faults must only be repaired by qualified expert personnel. If a lockout fault message is acknowledged several times without fixing the cause of the problem, this can lead to damage to parts or to the system.

The control unit automatically acknowledges faults such as defective temperature sensors or other sensors if the part concerned has been replaced and plausible test values have been supplied.

Caution

Procedure for faults:

- Read fault message.- Determine cause of fault using the table below and remedy it.- Reset fault with "Fault reset" button or in the contractor menu under "Acknowledge fault". If the fault message

cannot be acknowledged, high temperatures at the heat exchanger might be preventing a reset.- Check that the system is functioning correctly.

Procedure for warnings:

- Read warning message.- Determine cause of warning using the table below and remedy it.- With warnings, there is no need for fault acknowledgement.- Check that the system is functioning correctly.

Fault history:

A fault history can be called up and the most recent fault messages displayed in the contractor menu of the AM display module or BM2 programming module.

Fault 107HC pressureFault since 0 min

Notification

Boiler sensor faulty12

Dur. 0 minNumber 1 of 3

Fault history

Warning 2HC pressureWarning since 0 min

Notification

62 3063772_201507

35. TroubleshootingFaultThe following faults are in the system:

Fault code

Fault Cause Remedy

1 HLSC excess temp. The high limit safety cut-out (thermostat) has respondedThe boiler water temperature has exceeded 107 °C

Test heating circuit pump, vent system, press reset, clean heat exchanger

2 TL excess temp. One of the temperature sensors eHLSC1 or eHLSC2 has exceeded the high limit safety cut-out limit (105 °C)

Test heating circuit pump, test sensors, vent system, press reset, clean heat exchanger

3 eHLSC drift Temperature difference between temperature sensors eHLSC1 and eHLSC2 > 6 °C

Test sensors, test heating circuit pump, vent system, press reset, clean heat exchanger

4 No flame At burner start, no flame at the end of the safety time, monitoring electrode faulty, ignition electrode faulty, ignition transformer faulty

Test monitoring electrode, ignition electrode and ignition transformer, press reset, check gas pressure

5 Flame failure Flame failure during operation, monitoring electrode faulty, flue gas path blocked, condensate drain blocked

Test monitoring electrode, press reset, test flue system, test condensate drain

6 TC excess temp. One of the temperature sensors eHLSC1 or eHLSC2 has exceeded the limit of the temperature limiter (97 °C)

Test heating circuit pump, vent system, test sensors, press reset, clean heat exchanger

7 TL flue excess temp. The flue gas temperature has exceeded the limit of the TBA shutdown temperature

Clean heat exchanger, test sensors, check flue system

8 Flue gas damper does not switch

Flue gas damper contact (E1) closes or does not open on demand; output A1 does not activate flue gas damper

Check flue gas damper and wiring, check settings HG13 and HG14

9 Fault code unknown This fault is not known in this software Check software version of the PCBs10 eHLSC sensor faulty Temperature sensor eHLSC1, eHLSC2 or

sensor lead has short circuit or breakCheck sensor and lead

11 Flame pretence A flame is recognised before the burner starts Press reset, test monitoring electrode

12 Boiler sensor faulty Boiler sensor > 105 °C, boiler sensor or sensor lead has short circuit or break

Check sensor and lead

13 FlueG sensor faulty Flue gas sensor or sensor lead has short circuit or break


14 DHW sensor faulty DHW sensor (cylinder sensor) or sensor lead has short circuit or break


15 Outside temperature sensor faulty

Outside temperature sensor or sensor lead has short circuit or break


16 Rtn sensor faulty Return sensor or sensor lead has short circuit or break


18 Ext. safety circuit The contact for the external safety circuit has responded (maximum pressure limiter, low water indicator, etc.)

Press reset, repair fault

20 GCV relay test The internal relay test failed Press reset, replace burner control unit

24 Fan speed < The fan does not reach the set speed Test the fan's PWM and power cable, test fan, press reset

3063772_201507 63

35. TroubleshootingFault code

Fault Cause Remedy

26 Fan speed > The fan does not stop Test the fan's PWM and power cable, test fan, press reset, test flue system for strong draught

30 CRC burner control unit The EEPROM record is invalid Switch the power supply OFF and ON. If unsuccessful, replace the burner control unit.

32 Fault in 23 V AC supply 23 V AC supply outside the permissible range (e.g. short circuit)

Switch the power supply OFF and ON. If unsuccessful, replace the control PCB.

35 BBC missing Boiler chip card has been removed or not correctly inserted

Refit the correct boiler chip card

36 BCC faulty Faulty boiler chip card Replace boiler chip card37 Incorrect BCC The boiler chip card is incompatible with the

control PCBRefit the correct boiler chip card

38 BCC update required Boiler chip card fault, PCB requires a new boiler chip card (replacement)

Reinsert boiler chip card, replace boiler chip card

39 BCC system error Faulty boiler chip card Replace boiler chip card41 Flow monitoring Return temperature > flow temperature Vent system, check heating circuit

pump, test flow and return pipe connection

42 Condensate pump is not pumping anything out

Faulty condensate pump, drain line blocked, no power supply to pump

Check pump, check drain line, check mains plug and fuse

44 Flue gas pressure switch Flue system back pressure too high Heat exchanger contaminated, check flue system, test flue gas damper, press reset

52 Max. cylinder heating time Cylinder heating takes longer than permitted Test DHW sensor (cylinder sensor) and sensor lead, press reset

53 IO control deviatn Wind recognition, severe storm, insufficient ionisation signal during operation, burner contaminated

Test monitoring electrode, check flue system, press reset, clean burner

60 Siphon backpressure Siphon or flue system is blocked Clean siphon; test flue system, ventilation air, gas supply pressure (flow pressure) and monitoring electrode

78 Header sensor fault Faulty sensor or lead Check sensor and lead; replace if required

90 BCU comm error Emergency stop via ChipCom, faulty communication between control PCB and burner control unit

Switch the power supply OFF and ON. If unsuccessful, call in a specialist contractor.

95 Prog. mode Burner control unit is controlled by PC No action96 Reset Reset button pressed too often Switch the power supply OFF

and ON. If unsuccessful, call in a specialist contractor

98 Flame amplifier Internal burner control unit fault Monitoring electrode short circuit

Press the reset button, and switch the power supply OFF and ON. If unsuccessful, call in a specialist contractor, test monitoring electrode

99 Burner control unit system fault

Internal burner control unit fault Switch the power supply OFF and ON. If unsuccessful, call in a specialist contractor.

64 3063772_201507

35. TroubleshootingFault code

Fault Cause Remedy

107 HC pressure Water pressure too low, water pressure too high

Test system pressure, test cable, press reset, test water pressure sensor

Button

ButtonBCC Boiler chip cardCRC Cyclic redundancy checkEEPROM Rewritable memoryBCU Burner control unitGCV Gas combination valveIO Ionisation signalHLSC High limit safety cut-outeHLSC Electronic high limit safety cut-outTL Temperature limiterTBA Flue gas high limit safety cut-outTW Temperature limiter

3063772_201507 65

36. Troubleshooting warning messages

Number Fault Description Cause and remedy1 BCU replaced The control PCB has detected that the burner

control unit has been replacedInsert boiler chip card that corresponds to appliance output; if necessary, reinsert boiler chip card

2 HC pressure The water pressure has fallen below the warning limit

Check the system pressure,test sensors

3 Parameter changed Another boiler chip card has been inserted Make sure that the correct boiler chip card has been inserted, if necessary, reinsert boiler chip card

4 No flame At the last attempt to start the burner, no flame was detected

Wait for another start attempt, test ignition electrode and ignition transformer, test monitoring electrode, test gas connection pressure

5 Flame failure during stabilisation time Flame failure after safety time

Flame failure during operation Monitoring electrode faulty, flue gas path blocked, condensate drain blocked, test gas connection pressure

24 Speed below or above limit The fan does not reach the set speed, or does not stop

Test flue system, test the fan's PWM and power cable

43 Many burner starts Number of burner starts too high Too little heat is being drawn off, too little throughput, demand too high

Warning messagesThe following warnings are in the system:

66 3063772_201507

37. Sensor resistance tableNTC sensor resistances

Boiler sensor, cylinder sensor, outside temperature sensor, return sensor, eHLSC sensor, header sensor

Temp. °C Resist. Ω Temp. °C Resist. Ω Temp. °C Resist. Ω Temp. °C Resist. Ω-21 51393 14 8233 49 1870 84 552-20 48487 15 7857 50 1800 85 535-19 45762 16 7501 51 1733 86 519-18 43207 17 7162 52 1669 87 503-17 40810 18 6841 53 1608 88 487-16 38560 19 6536 54 1549 89 472-15 36447 20 6247 55 1493 90 458-14 34463 21 5972 56 1438 91 444-13 32599 22 5710 57 1387 92 431-12 30846 23 5461 58 1337 93 418-11 29198 24 5225 59 1289 94 406-10 27648 25 5000 60 1244 95 393-9 26189 26 4786 61 1200 96 382-8 24816 27 4582 62 1158 97 371-7 23523 28 4388 63 1117 98 360-6 22305 29 4204 64 1078 99 349-5 21157 30 4028 65 1041 100 339-4 20075 31 3860 66 1005 101 330-3 19054 32 3701 67 971 102 320-2 18091 33 3549 68 938 103 311-1 17183 34 3403 69 906 104 3020 16325 35 3265 70 876 105 2941 15515 36 3133 71 846 106 2852 14750 37 3007 72 818 107 2773 14027 38 2887 73 791 108 2704 13344 39 2772 74 765 109 2625 12697 40 2662 75 740 110 2556 12086 41 2558 76 716 111 2487 11508 42 2458 77 693 112 2418 10961 43 2362 78 670 113 2359 10442 44 2271 79 670 114 228

10 9952 45 2183 80 628 115 22211 9487 46 2100 81 608 116 21612 9046 47 2020 82 589 117 21113 8629 48 1944 83 570 118 205

3063772_201507 67

38. Technical parameters according to EU regulation no. 813/2013

Type MGK-2-390Condensing boiler [yes/no] yesLow temperature boiler (**) [yes/no] noB11 boiler [yes/no] noCogeneration space heater [yes/no] noIf yes, equipped with a supplementary heater

[yes/no] -

Combination heater [yes/no] noItem Symbol UnitRated heat output Prated kW 367Useful heat output at rated heat output and high-temperature regime (*)

P4 kW 366,7

Useful heat output at 30% of rated heat output and low-temperature regime (**)

P1 kW 121,6

Auxiliary electricity consumption at full load

elmax kW 0,410

Auxiliary electricity consumption at part load

elmin kW 0,042

Auxiliary electricity consumption in standby mode

PSB kW 0,011

Seasonal space heating energy efficiency

ns % 93

Useful efficiency at rated heat output and high-temperature regime (*)

n4 % 88,9

Useful efficiency at 30% of rated heat output and low-temperature regime (**)

n1 % 97,0

Standby heat loss Pstby kW 0,401Ignition burner power consumption

Ping kW 0,000

Emissions of nitrogen oxides NOx mg/kWh 34Contact details Wolf GmbH, Industriestraße 1, D-84048 Mainburg

(*) High-temperature regime means 60°C return temperature at heater inlet and 80°C feed temperature at heater outlet.(**) Low temperature means for condensing boilers 30°C, for low-temperature boilers 37°C and for other heaters 50°C return temperature (at heater inlet).

Gerdewan JacobsTechnical Director

Mainburg, 15/07/2015

DECLARATION OF CONFORMITY(to ISO/IEC 17050-1)

Number: 3063772

Issued by: Wolf GmbH

Address: Industriestrasse 1, D-84048 Mainburg

Product: MGK-2 gas condensing boiler

Theproductdescribedaboveconformstotherequirementsspecifiedinthefollowingdocuments:

§ 6, 1.BImSchV, 26/01/2010DIN EN 437, 09/2009DIN EN 483, 06/2000DIN EN 677, 08/1998DIN EN 60335-1, 10/2012DIN EN 60335-2-102, 07/2010DIN EN 55014-1, 05/2012

In accordance with the following Directives

2009/142/EC (Gas Appliances Directive)2004/108//EC (EMC Directive)2006/95/EC (Low Voltage Directive) 2009/125/EG (ErP Directive)2011/65/EU (RoHS Directive)

thisproductisidentifiedasfollows:

Klaus GrabmaierProduct approval

0085

installation instructions for contractors gas condensing...

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