MICROPACK ‘ETM’ SERIES

HEATING & CHILLED SYSTEM PRESSURISATION UNITS

Datasheet No: 209Issue No: 8Date: 01/10/07group member

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ITEM MODEL/SERIES STANDARD/CLASS REMARKSQuality System Manufacturing ISO 9001:1994 Cert No. FM33090

Wiring Standards BSEN 60204: Part 1:1998Electro Magnetic Compatibility European Directive 89/336/EEC:1992

European Directive 89/392/EEC:1994Mains Water Breaktank 5 Litres Nominal Capacity

Mains Float Valve TB Mk.2 WRC.950 2008 0.5" Type 'AB' Air GapPipework Polyurethane Type TU

Pipe Fittings TUV 9205-8323-501Pumps ET 508 IMQ & VDE Standards

Pump Motors T.E. Encapsulated IP55, Class F Insulation Thermal Overload ProtectedControl Cabinet AQ-HM-S IP54

Interlocked Door Isolator LA2 & LA3 BS, UL, CSA, VDE, IECMicroprocessor Enhanced MPC or 2000Plus

Transducer Control 292 SS/Ceramic 8 Bar Max. Test Pressure

Construction Standards 'Micropack' ETM Series

HEATING & CHILLED WATERPRESSURISATION EQUIPMENT

MICROPACK ‘ETM’ SeriesMICROPROCESSOR CONTROLLED

GENERAL

The “Micropack” ETM Series system pressurisation unit is designed to maintain a minimum set pressure in a sealed heating or chilled water system.

Once the system has been initially filled via a quick filling loop, should the pressure fall below the cold fill pressure the ETM unit operates automatically to restore that pressure.

If high or low pressure conditions occur the boiler/chiller operation can be interrupted via thevolt-free contacts provided.

The unit is used in conjunction with a suitably sized expansion vessel from the “Aquatank” range of repla-cable diaphragm vessels to BS6144 (see table on page 3).

FEATURES of STANDARD MODEL 2ETM40

• Microprocessor/Transducer control (For long term accuracy & reliability)• Low water protection in break tank• Common Boiler / Chiller interlock fault relay (volt-free)• Mains water break tank with type ‘AB’ air gap to Water Supply Regulations 1999.

• Two pressurisation pumps• Compact wall mounted cabinet. (300 wide x 400 high x 170 deep)• Automatic alternation of duty pump (for even wear)• Automatic periodic pump pulsing (To prevent pump seizure)

2

• RS232 or 422/485 serial communications port• 8 Volt free signal relays (Functions can be varied to suit requirements)• Indicators for pump run, tripped, hand, off & auto• Additional analogue & digital inputs & outputs available if required

(Note, Both units are fully adjustable on site)

• High water protection in break tank• Keypad for ease of setting parameters• Illuminated comprehensive 2 line LCD display• Non volatile Eprom memory

FEATURES of ENHANCED MODEL 2ETM40-E (as above with addition of below)

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30°C

AM

BIENT 2

5% G

LYCOL

100

200

300

400

500

600

700

800

900

1000

2000

3000

4000

5000

1500

SYSTEM CONTENT IN LITRES

20 30 40 50 60 70 80 9010

0

200

300

400

50010

BOILER POWER IN KW FOR MEDIUM CONTENT SYSTEMS (10L/Kw)

10

20

30

40

50

60

708090

100

185

60V

R20

0VR

300V

R50

0VR

100V

R

EX

PA

NS

ION

VO

LUM

E O

F S

YS

TE

M IN

LIT

RE

S

30°C

0%

GLY

COL

6000

7000

8000

9000

1000

0

0 20V

R

82°C

(LTHW

) BOILE

R FLO

W T

EMPERATURE

170

50

110

All Dimensions in mm.

300

400

InterlockedDoor Isolator

Mains Power 20mm

System Connection15mm

Mains WaterSupply 15mm

Overflow

Approx. weight 12Kg.

8

370

9

35

333mm fixing centres

160

210

290

205

Warning 22mm

Interlocked Electrical SupplyIsolator and ON/OFF switch

flow restrictorFloat valve

Display1 Pair ofWall Brackets

DIMENSIONS

3

EXPANSION VESSEL SELECTION GUIDE

EXAMPLE:1250 Ltr LTHW system at 82oCSelect 200VR expansion vessel

D

H

DN

60 VR —› 300 VR

Type 25 HR 60 VR 100 VR 200 VR 300 VRNominal Content –litres 25 60 100 200 300

D mm 295 409 480 634 634

D1 mm 228 - - - -

H mm 485 740 840 980 1280

Water Connection DN BSP 1” 1” 1” 1 ¼” 1 ¼”

Dry Weight Kg 5.6 25 32 50 55

Max. working Pressure-bar 10 10 10 10 10

AQUATANK ‘VR’ Series:The diaphragm vessels for special appli-cations: Meets or exceeds EC norms for pressure vessels 97/23/EC; Max working pressure: 10 bar; Vessel Material: Steel RSt 37-2.; All vessel parts in contact with water are coated against corrosion; Diaphragm: Made of special high quality rubber material; Filling Valve: Schraeder-valve-type;Surface Treatment: Blue, durable powder coating finish.

H

DN

D1

D

25 HR

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N

Supply

Pressure fault

Control

TYPICAL BOILER/CHILLER INTERRUPT CIRCUIT

L N E 20 21 22

C NC NO

LNEE E NNP2

Power Supply240VAC 50Hz 2 Amp

Boiler/ChillerVolt Free240VAC 5A max non-inductive

Pum

p 1

Pum

p 2

Setpoint Adjust

High Pressure Setting

Boiler/ChillerInterlock Terminals

thermostat

Controlrelay

CNO NC

P1

MPC Microprocessor

STANDARD 2ETM40 ELECTRICAL CONNECTIONS

CONNECTION NOTESSafety Interrupt Volt free terminals 20/22 change state when either High or Low pressure is sensed on the system. The control relay de-energises in a fault condition.

SPECIFICATION FOR STANDARD “MICROPACK” 2ETM40 SERIES

Twin pump pressurisation unit suitable for a cold fill pressures of up to 3.0 bar (45 psi), complete with MPC microprocessor and 292 pressure transducer incorporating: combined high/low system pressure cut out single pole relay with “volt-free” contacts; digital pressure and faultdisplay; solid state drive for pressurisation pumps with thermal overload; automatic cut-out and reset on low water level in breaktank.5 litre mains water breaktank with 15mm float valve having type A air gap to BS6281:Part 1.All contained within powder coated sheet steel enclosure, with interlocked door isolator and interconnect-ing piping and wiring.Electrical supply: 240v. 1 Phase, 50 Hz, 2 Amp; Max Power: 0.07 Kw

4

OPERATIONAL/WARNING DISPLAY“L.P” = Low System Pressure, (Scrolls with pressure reading).“H.P” = High System Pressure, (Scrolls with pressure reading).“L.L” = Low Water Level in Mains Water Break Tank.

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ENHANCED 2ETM40-E ELECTRICAL CONNECTIONS

5

SPECIFICATION FOR MICROPACK 2ETM40-E (ENHANCED)As standard specification with additions: 2000Plus microprocessor control, two thermal overload protected pump motors, Fascia controls to provide 5 indicating lights for each pump condition or status:- run, tripped, hand, off auto.Fascia keypad to enter & set operational parameters, reset alarm & mute.Fascia 2 line LCD illuminated display to provide:

OPERATIONAL DATA DISPLAY: INFORMATION DISPLAYS:System Pressure Hours Run for Each PumpSystem Status Including Warnings Hours Elapsed Since Last ServiceAlarms With Type of Fault Parameter Settings DisplayPump/s Tripped High Pressure Cut-out SettingTransducer Fault Duty Pressure (Cold Fill Pressure)Boiler/s Cut-out Low Pressure Cut-out Setting Support Pump Delay Time

BMS VOLT FREE RELAY CONNECTIONS: * WARNING DISPLAYS:High System Pressure High Pressure ApproachLow System Pressure Low Pressure ApproachLow/High Water Level Low Water Level ApproachExcessive Frequency of Start/Demand Servicing ReminderPump Tripped/Failed Transducer FaultCommon Warning Signal for all Warning Displays*Boiler/Chiller Cut-out

PUMP 1

PUMP 2

Tripped

Running

Tripped

Running

OffAuto

HandOffAuto

Parameters

P

Reset

Mute

Enter

R

M

Hand

Set Operational Parameters or View Data

Alarm ResetAlarm Mute

Enter Operational Parameters

Audible Fault Alarm

Pump Run, Tripped, Hand, Off, Auto LightsPump 1

Pump 2

Optional Solid State Relay (SS) Output (break tank filling etc..)

8 VOLT FREE RELAYS FOR:Pump/s TrippedLow/High Water LevelBoiler/s Cut-outFrequency of StartsHigh System PressureLow System PressureTransducer FailureCommon Warning Display (see below)

A A D D A/D

Special Analogue/Digital (A/D) Input

2 Optional Digital Inputs5 Level Sensing Probes in Mains Water Break Tank

292 Pressure Transducer

Interconnecting Ribbon Cable

2 Line LCD (backlight) Display

Keypad For:-

Mother Board

Facia Board

FUS

E

FUS

E

SS

R

SS

R SS

R

SS

R

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WORK AT SITE

• Bolt unit to wall.• Connect 15mm mains water supply.• Fit 22mm over flow warning pipe.• Provide 2 amp 240 V AC 50Hz electrical supply and connect to unit.

PUMP 1

PUMP 2

PUMP 3

PUMP 4

Tripped

Running

Tripped

Running

Tripped

Running

Tripped

Running

HandOffAuto

HandOffAuto

HandOffAuto

HandOffAuto

AquaTech LimitedWivenhoe, Essex, CO7 9DR, UK.

Phone: 01206 825254

2000Plus Controller

Parameters

PReset

Mute

Enter

R

M

• Wire boiler/chiller control to terminals. • Connect MICROPACK ETM unit to system.• Fill system via quick-filling loop.• CAUTION: Test pressure must not exceed 8.0 bar (115 psi)

Main Heating Return Header

2 Amp, 240V AC Fused Spur Mains Supply2ETM40

‘Micropack’ Pressurisation Unit

Lockshield Isolating Valve

15 mm Incoming Mains Water Supply

AquaTank Dia-phragm Expan-

sion Vessel(Floor Standing)

Drain Cock

22mm Overflow to Drain

Air Charg-ing Valve

Isolating Valveand Union

Please Note:All pipework & valves are supplied and fitted by contractor.

Use intermediate cooling vessel if flow exceeds 90oC.

INSTALLATION DIAGRAM OF AN AQUATECH MICROPACK UNIT

Connection to un-derside of return header on suction side of circulator pumps

For connection size see Aqua-tank Vessel Table, page 3

The information in this specification is correct at time of issue; as AquaTech Pressmain design and development programmes are continuous, we reserve the right to make any changes to this specification without prior notice.

Leaders in the design, manufacture and assembly of packaged fluid pumping equipment and control systems.Applications: Cold Water Supply; Fire Fighting; Heating & Chilled System Pressurisation; Tank Level Monitoring.

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