baxi 1kwe specifier brochure
DESCRIPTION
Ecogen specifier brochureTRANSCRIPT
Ecogen™
micro combined heat and power
2
Introduction to Baxi
Innovators in heating technology
For over 150 years Baxi has led the way with new and pioneering heating solutions.
Today, our dedication to innovation is greater than ever as we look to new ways to heat
homes and businesses; ways that will use low carbon sources of energy and protect the
planet for future generations.
We are committed to delivering sustainable solutions that minimise energy usage,
cut carbon emissions and deliver maximum value for you and your customers.
We offer a comprehensive range of heating solutions that can be tailored to suit your
needs, including:
• High efficiency boilers
• Solar energy
• Ground source heat pumps
• Air source heat pumps
• micro-CHP technology
• Biomass solutions
• Vented and unvented cylinders
• Flue gas heat recovery systems
Our latest addition is the Baxi Ecogen micro-CHP
– an innovative wall mounted micro combined
heat and power appliance that offers significant
carbon and cost savings.
be 1st with m
CH
P
Combined heat and power (CHP) is the process of
generating both useful heat and electrical power
from a single source.
Large scale CHP, suitable for commercial
applications, has been available for many years.
Domestic micro-CHP is a new technology,
generating electricity for use in the home whilst
providing heating and hot water.
With homes accounting for 27% of the UK’s
total carbon emissions, the Government is keen
to cut household emissions by 80% by 2050.
The Government has acknowledged this by
introducing a Feed-in Tariff (FiT) for microgeneration
installations generating electricity.
With the forthcoming revision to the Building
Regulations bringing about a step change in
minimum boiler efficiency, the Baxi Ecogen offers
the next level of efficiency over a SEDBUK Band A
boiler.
Baxi Ecogen offers greater efficiency than the
combination of a SEDBUK Band A boiler for heat
and power from an electricity supplier. That's
because, unlike a power station, the Baxi Ecogen
makes use of the excess heat from electrical
generation to provide central heating and hot
water. In addition, Baxi Ecogen generates electricity
locally, eliminating transmission losses. Baxi Ecogen
also generates electricity at times of peak demand
so it is more likely to be used on-site, maximising
carbon and cost savings.
Band Aboiler
77% overallefficiency
85% overallefficiency
35%efficiency
electricity heat
88%efficiency*
electricity
BAXI ECOGEN*Based on 91% winter efficiency (SEDBUK) and 75% summer efficiency
heat
gas
gas
CENTRAL GENERATION ENERGY EFFICIENCY
LOCAL GENERATION ENERGY EFFICIENCY
Energy efficiency comparison
Baxi Ecogen heralds the most significant change in the home heating industry since the condensing boiler. That’s because it is the first wall-hung, commercially available domestic micro combined heat and power (micro-CHP) appliance.
The Baxi Ecogen complies with current legislation
and provides significant carbon benefits, helping
both the new build and public sector to meet the
requirements of the Code for Sustainable Homes.
The Baxi Ecogen is officially classed as a
microgeneration technology so householders can
benefit from financial assistance such as the Feed-in
Tariff, helping to tackle fuel poverty.
The Baxi Ecogen is a logical, practical and familiar
alternative to a regular boiler, offering some unique
benefits:
• Does not rely on building orientation or
weather conditions to generate electricity
• Generates electricity at times of peak
electrical demand in the home
• Maximises greener and cheaper on-site use,
helping to alleviate fuel poverty
• Reduces reliance on grid electricity
• No planning permission required
• Reduces carbon emissions
MAGNET
Heat exchanger recoversexcess heat and converts it
into useful heat for the system
Flue gasexcess heat
Engine coils
HELIUM
Preheated return Heating circuit return
Gas inlet
AC Supply AC Supply
The Baxi Ecogen is a micro combined heat and power (micro-CHP)appliance for the provision of central heating, hot water and electricity. Designed to be a practical alternative to a standard domestic boiler, the basic principles for heat generation are the same as a regular heat only boiler. The Baxi Ecogen can be used on standard S, Y and W plan open-vented or sealed systems.
For electricity generation, the Baxi Ecogen uses a
free piston Stirling engine. This engine is heated
by burning gas. The helium working fluid expands
and contracts to move a piston up and down. This
piston travels between a copper coil, generating
up to 1kW of electricity at 50Hz single phase.
The Baxi Ecogen uses a single cable connection
for its own electricity consumption and for
distribution of generated electricity - one three
core cable provides a two way supply. There is
no additional wiring required for electrical output
and the Baxi Ecogen can be connected to the
existing domestic electricity circuit.
Stirling engine
Typical household electricity demand and heating periods
The Baxi Ecogen generates electricity only when
there is a demand for central heating or hot
water. Daily trends for heating and electricity
demand are well synchronised, maximising
electrical production at times of peak electricity
use in the home.
The electrical output also follows the typical daily
domestic electrical base load (0.2kW – 0.9kW) .
These characteristics result in maximum on-site
use of electricity generated. This offers additional
carbon and running cost saving benefits (see Page
8 for more information).
The operating sequence of the Baxi Ecogen is
more sophisticated than a regular boiler. At start
up, a regular boiler will operate at the maximum
heat output and then progressively reduce the
output to match the heat demand. Baxi Ecogen
does the opposite.
At start up, the Baxi Ecogen will allow only
the Stirling engine to operate (3.5kW to 6kW).
Baxi Ecogen constantly monitors the system
temperatures and, if required, the supplementary
will also operate but at minimum output (6kW
Stirling engine plus 4kW supplementary = 10kW).
If the Baxi Ecogen determines additional heat is
required, the supplementary will operate up to
maximum output (6kW Stirling engine plus 18kW
supplementary =24kw).
Relationship between heat and electrical output
Energy flow
This gives opportunity for the Stirling engine
alone to fulfill low heat demands, or keeps the
supplementary heating to a minimum (if required),
to maximise electrical generation.
A range of accessories is available to provide
room, outdoor and hot water load compensation
for optimum efficiency and comfort. See page 11
for more information.
Fuel bills reduced by up to £600*Carbon emissions reduced
by up to 40%†
Fuel bills reduced by up to £600*Carbon emissions reduced
by up to 40%†
Reduced installation costs
Reduced installation costsLess disruption
Electricity generation - on site electricity generation displaces centrally generated electricity from the grid
Heat led generation - electricity is generated when there is demand for heating or hot water
Excess heat from the electrical generation process is recovered and used for heating
Wide electrical output modulating range (0.3kW to 1kW) adjusts the electrical output according to the heating demand without switching on and off
More electricity generated due to reduced on / off cycling of the generator, even when the heat demand is low
Daily trends for heating and electrical demands are well synchronized therefore electricity production is maximised
Electrical output is designed to meet the typical daily electrical base load (0.2 to 0.9kW)
Stirling engine is sealed - burner is a separate component so no additional competencies are required - only Baxi product training
Maintenance free generator (Stirling engine) - no servicing required apart from the supplementary boiler section
Grid connection hardware / software complies with Engineering Recommendation G83/1
Simple District Network Operator (DNO) notification using supplied form
Energy meter displaying electricity power and generation
Built in automatic grid connection hardware / software - no external automatic grid connection device required
Single cable connection - one three core cable provides two way supply of electricity
No additional wiring for electrical output
Can be connected to existing domestic electricity circuit
Fuel bills reduced by up to £600*Carbon emissions reduced
by up to 40%†
Operating sequence gives opportunity for the Stirling engine alone to fulfil low heat demands, generating more electricity
First modulates the supplementary from low to higher output, allowing the engine to make more electricity
* See page 19 † See page 18
Better overall energy efficiency than regular boiler and power from an electricity supplier
Wide heat output modulating range (7:1) - adjusts the boiler power (heat output) according to the heating demand without switching on and off
More heat efficient due to reduced on / off cycling of the boiler, even when the heat demand is low
Top hydraulic connections allow direct connection to common upward piping
No stand off kit required or additional upward piping
Compatible with standard Multifit flue components for familiar installation
7 day pump exercise - prevents seizing of the pump if not frequently used
7 day valve exercise (if Baxi controls used) - prevents seizing of the valve(s) if not frequently used
Less downtime and service visits
White backlit display visible in dimly lit and dark conditions
Large text LCD - full text descriptions with fewer symbols
Service due display at selectable intervals (including phone number)
Suitable for a wide range of properties and applications
Dedicated LPG model - suitable for off gas grid
Integrated intelligent wiring centre - replaces a conventional wiring centre and controls 230V valves
Allows use of Baxi dedicated time and temperature controls with conventional S/W/Y plan systems
Water splash and spray resistant (IP44) - can be fitted in bath and shower rooms
Dedicated LPG model so no field conversion or set up
Expanded polypropylene (EPP) packaging - reusable if returned to Baxi (also better for the environment)Reduced installation costs
Fuel bills reduced by up to £600*Carbon emissions reduced
by up to 40%†
Suitable for a wide range of properties and applications
Able to adjust output to match wide range of property heat load requirements
Able to adjust output to match contrasting hot water and central heating demands
Built in frost protection to prevent frost damage of boiler in garages, utilities etc.
Versatile fluing options including horizontal, vertical, telescopic
Plume deflector option to reduced nuisance from plume
Reduced installation costsLess disruption
Boiler ReturnBoiler Flow
Fan
Supplementary Gas Valve
Stirling Engine Gas Valve
Gas Inlet
Condensate Trap
PCB Control Cover
SupplementaryHeat Exchanger
Supplementary Burner
Stirling Engine Burner
Stirling Engine
Think about a traditional on/off room thermostat.
It sends a signal to the boiler to switch on.
The boiler is then operated at the manual
flow temperature setting (eg 80°C). This room
thermostat switches the boiler on and off to
match the heat output to the demand.
Baxi controls are more intelligent. They send
temperature information to the Baxi Ecogen
(settings and actuals). The Baxi Ecogen can
then automatically reduce the flow temperature
setting. Instead of turning on and off, the Baxi
Ecogen remains on, matching the heat output to
the demand, whilst generating electricity.
A range of dedicated controls accessories is available for use with the Baxi Ecogen, providing room, outdoor and hot water load compensation for enhanced comfort, efficiency and electrical generation.
Load compensation offers 2% towards the dwelling emissions rating (DER) improvement for new build.
Load compensation
• Low voltage so wiring Part P exempt
• Simple and discreet wiring
• Supplied with 5 LED boiler plug in for
basic status indication
Supplied plugged in Boiler
The Baxi Ecogen controls are removable and
incorporate a programmable room thermostat.
If removed, a wired wall holder is required
(available separately). The Baxi Ecogen internal
wiring centre must be used for all 230V system
components. This enables intelligent control
of the S/W/Y plan system including room load
compensation.
If the removable controls are left on the appliance
(as supplied), the Baxi Ecogen can be connected
to S/W/Y plan systems like any other heat only
boiler. The only requirement is that the system
pump must always be wired back to the Baxi
Ecogen.
Sales code: 720025501
• 7 day programmer
• Two channels (CH & HW)
• Room load compensation
• Quick use menu
• Energy meter
• Boiler configuration
Wired use of removable control in room (supplied with the Baxi Ecogen - plugged in)
If Baxi controls are used, the internal wiring
centre must be used for all 230V system
components. This enables intelligent control of
the multizone system (inc hot water).
Sales code: 720026401
Also available are a Baxi outdoor sensor for
weather compensation and a Baxi cylinder sensor
for hot water load compensation (only for use with
Megaflo HE and Santon Premierplus cylinders).
These sensors can only be used in conjunction
with the removable room control, to provide
additional load compensation.
Baxi controls can also control two zones.
The removable programmable room thermostat
must be used for the first zone and the optional
wall holder is required for this.
An optional additional programmable room
thermostat is required for the second zone.
• Enables weather compensation
• Low voltage wiring is Part P exempt
• Simple and discreet small two core wiring
• Wires are reversible as polarity is not
applicable
• Configured using
removable control
• Replaces on /off cylinder thermostat
• For Megaflo HE cylinders only
• Low voltage wiring is Part P exempt
• Simple and discreet small two core wiring
• Wires are reversible as polarity is not applicable
Sales code: 720103001
Controls combinations
Sales code: 720027001
Fuel bills reduced by up to £600*Carbon emissions reduced
by up to 40%†
More comfortable
White backlit display visible in dimly lit and dark conditions
Large text LCD with full text descriptions and few symbols
Common operating modes are familiar to householder
Easy menu - daily settings and adjustments can be made via easy menu
Main menu lock - tamper proof main menu
Service due display at selectable intervals (including phone number)
Calendar (auto summer / winter time adjustment) - no need to reset the time twice each year
Central heating advance - when activated in timed mode only, central heating is switched on for remaining off time and then automatically returns to the time program
Rooms heated during off times when occupancy unplanned, without need to change operating mode before and after
Hot water boost - one time heating of hot water to desired temperature
Hot water heated during off times when occupancy unplanned, without need to change operating mode before or after
Holiday function - house is warm upon return
Frost protection function to provide room frost protection
Prevents frost damage of heating system, building and contents
Flow temperature modulation (CH) - adjusts boiler flow temp (heat output) depending on the difference between the actual room temp and the temp setting
More efficient due to reduced on / off cycling of the boiler
More efficient as boiler is operated in condensing mode for longer
Will maintain required room temperature without fluctuation
Room temperature reduced setting - minimum room temperature can be set for off times
Rooms do not become cold at night (or when occupied in off times)
Optimum start - when activated in timed mode only, central heating is switched on during off time to ensure desired room temperature at the start of on time
Desired room temperature is available exactly when required
* See page 19 † See page 18
More comfortable
Fuel bills reduced by up to £600*Carbon emissions reduced
by up to 40%†
Fuel bills reduced by up to £600*Carbon emissions reduced
by up to 40%†
Reduced installation costsLess disruption
Enables weather compensation
Additional flow temperature modulation (CH) - adjusts boiler flow temp (heat output) depending on the difference between the actual room temp, the room temp setting and the outdoor temp
More efficient due to reduced on / off cycling of the boiler
More efficient as boiler is operated in condensing mode for longer
Enables hot water load compensation
Additional flow temperature modulation (CH) - adjusts boiler flow temp (heat output) depending on the difference between the actual hot water temp and the hot water temp setting
More efficient due to reduced on / off cycling of the boiler
More efficient as boiler is operated in condensing mode for longer
Hot water temperature can be adjusted from the living space (eg for seasonal adjustment)
Multiple channels for controlling two central heating zones and hot water (CH1, CH2 & HW)
Integrated intelligent wiring centre - replaces a conventional wiring centre and controls multizone 230V valves
* See page 19 † See page 18
The Baxi Ecogen must be mounted on a wall that
is able to accept the weight of the appliance when
full of water. Consideration must be given to safe
lifting of the boiler from floor to wall, including
manoeuvring over worktops. Baxi recommends
carrying out a site survey.
The Baxi Ecogen is suitable for use on open
vented and sealed systems. A system bypass
is required providing 10l/min for open vented
systems and 7l/min for sealed systems. The Baxi
Ecogen is compatible with standard Multifit Group
A and N flue accessories.
The design heat loss must not exceed 23kW if an
MCS registered installation is required for the
purpose of financial assistance such as a Feed-in
Tariff.
The Baxi Ecogen is supplied with built in G83/1
compliant grid connection hardware (see page 7).
230V system controls must be wired back to
the boiler when the removable control is used
(replaces standard wiring centre). The pump must
always be wired back to the boiler, even when
Baxi controls are not used.
• W plan
• Multizone – Two Baxi controls can be wired
back to the wiring centre on the boiler.
8
S plan
8
Y plan
Dedicated circuit
Existing final circuit
The Baxi Ecogen is fully compliant with the
2006 Building Regulations that requires carbon
emissions no greater than a regular Band B boiler.
The Baxi Ecogen has lower carbon emissions than
a regular Band A boiler.
New Building Regulations will outline specific
requirements for micro-CHP. These requirements
are based on the heating plant emissions rate
(HPER) for the appliance in a particular property.
HPER gives an indication of carbon emissions
of the heating plant in a specific dwelling and is
given in kg CO2 per kWh. Because the Ecogen
is heat led, the HPER is for each kWh of heat
generated, but the carbon value is for both heat
and electric generation (as the electricity is a
by-product).
There are different HPERs for different plant size
ratios (PSR). The requirement set for micro-CHP
in the 2010 Building Regulations is a maximum
HPER of 0.230 (based on default 1.5 plant size
ratio).
There is a section of SAP dedicated for
micro-CHP known as ‘appendix N’. SAP
Appendix N cross references performance data
from the SEDBUK database. Performance data
appears in a dedicated micro-CHP section of
the SEDBUK database. The performance data
is given in the Nominal Performance Data table
on page 23.
The performance data is given for 4 nominal
plant size ratios (0.5, 1.0, 1.5 & 4.0). SAP
calculates the plant size ratio based on the SAP
heat loss co-efficient. SAP then works out the
exact performance data between the nominal
plant size ratios.
Footnote:
Based on a plant size ratio of 1.5 Primary energy factor of 1.55 for gas and 2.8 for electricity, SEDBUK 91% efficient Band A
heat only boiler, carbon factor of 0.194 for gas and 0.422 for electric.
maximum appliance output
design heat loss of the property
plant size ratio =
Ecogen Band A Boiler
vs
Ecogen Band G Boiler
vs
Based upon a SEDBUK Band G boiler at SAP default of 65% efficiency. Old controls (programmer but no thermostat or TRV’s)DER = 85.63 kg CO2/m² /yr (8482 kg/yr)SAP = 37 (Band F)EI = 32 (Band F)
Based upon a SEDBUK Band B boiler at SAP default of 86% efficiency. Modern Part L compliant controls (programmer, room stat & TRV’s)DER = 58.64 kg CO2/m² /yr (5593 kg/yr)SAP = 55 (Band D)EI = 50 (Band E)
Based upon a SEDBUK Band A boiler at SAP default of 90% efficiency. Modern Part L compliant controls (programmer, room stat & TRV’s)DER = 56.59 kg CO2/m² /yr (5367 kg/yr)SAP = 57 (Band D)EI = 51 (Band E)
Baxi Ecogen with load compensation. Modern Part L compliant controls (Baxi programmeable room stat & TRV’s) PSR = 2.86DER = 46.02 kg CO2/m² /yr (4685 kg/yr)SAP = 65 (Band D)EI = 57 (Band D)
The Feed-in Tariff (FiT) is a financial support scheme
introduced by the Government from April 2010 to
encourage the uptake of small-scale microgeneration
technologies that generate electricity, such as Baxi
Ecogen.
FiT will consist of two parts, a generation tariff and
an export tariff:
• Generation tariff - the energy supplier will make
a fixed payment to the householder of 10p for
every kWh of electricity they generate
• Export tariff - the energy supplier will make a
fixed payment to the householder of 3p for every
kWh of electricity exported back to the electricity
grid
FiT will be paid over a minimum period of 10 years from
the date the installation is first registered.
The biggest benefit to the householder is that they
can use the electricity they generate on-site to
offset some of the electricity they would otherwise
have to buy from their energy supplier, therefore
reducing their electricity bill. The more electricity
that is used on site, the lower the running costs.
Qualification for the Feed-in Tariff and other
financial assistance requires the use of MCS
certified product and installation. MCS is
designed to reassure consumers that the product
and installation will meet minimum standards and
achieve manufacturer’s claims (e.g. performance).
For more information on how to become an MCS
certified installer or where to find one, please visit
www.microgenerationcertification.org
Baxi offers a training course that is recognised by
BRE as providing the skills specific to Baxi Ecogen
for MCS installer certification, in addition to
standard plumbing and electrical competencies.
Fuel cost consumption
839£42932 gnitaeh rof detareneg taeH
7£85yrailixua yb detareneg taeH
88£2422yticirtcele rof detareneg taeH
422£-2422-detareneg yticirtcelE
071£-5431-etisno desu yticirtcelE
72£-798-detropxe yticirtcelE
This estimate is based upon a property with a calcualted heat loss of 8.8kW. The payback period estimation includes predicted inflation for both fuel cost and RPI. The performance is difficult to predict with certainty due to variable patterns of use determined by householder settings, outdoor temperatures etc. This directly affects heat and electricity demand and production. The estimates are based upon the best available information, but are given as guidance only and should not be considered as a guarantee.
As long as the householder notifies the electricity
supplier that a Baxi Ecogen micro-CHP product
is connected to the electricity grid, the existing
standard or variable electricity meter can be used.
The Baxi Ecogen cannot be used on a pre-payment
electricity meter.
The electricity supplier chosen for the Feed-in
Tariff will advise if export and generation meters
are required for the relevant parts of the tariff.
Some electricity suppliers will estimate (deem) the
electricity generated and proportion exported, and
reward on this basis.
The householder will not be charged for any meter
changes required for the Baxi Ecogen. Typically,
either a separate export and generation meter or a
combined meter can be fitted.
An export meter accurately measures the electricity
exported and can be fitted near to, and in series
with, the import meter. Both meters must not be
able to operate in reverse (see Fig.A). A combined
meter measures and displays import and export
separately (see Fig.B).
In addition, a separate generation meter can be
fitted. Alternatively, the Baxi Ecogen has a built in
energy meter that can be used to measure the total
electricity generated.
Fig.A Separate import and export meter Fig.B Combined import and export meter
The Baxi Ecogen should be registered with Gas Safe
in the same way as a standard boiler.
A Building Regulations certificate will then be issued
to the consumer in the normal way.
The Baxi Ecogen installation must comply
with Engineering Recommendation G83/1
(Recommendations for the connection of small-
scale embedded generators (up to 16A per phase)
in parallel with public low voltage distribution
networks).
The Baxi Ecogen incorporates the necessary
grid connection hardware for compliance with
Engineering Recommendation G83/1.
The only thing left to do is to complete and send the
to the relevant
DNO, provided in the Baxi Ecogen Installation
Instructions. Baxi recommends that the installer
completes and sends this form on behalf of the
consumer.
For a list of DNOs and their contact details, please
visit www.energynetworks.org
The consumer must notify their electricity supplier
that the Baxi Ecogen micro-CHP microgeneration
product has been connected to the grid.
Combined heat input max kW 25.3 24.9
Combined heat output max (non-condensing) kW 24 24
Combined heat output max (condensing) kW 25.9 25.9
Engine max heat input (net) kW 7.7 7.7
Engine min heat input (net) kW 3.7 3.7
Supplementary max heat input (net) kW 16.9 16.9
Supplementary min heat input (net) kW 3.6 3.6
Engine max heat output (non-condensing) kW 6 5.9
Engine max heat output (condensing) kW 6.4 6.4
Engine min heat output (non-condensing) kW 3.2 3.1
Engine min heat output (condensing) kW 3.4 3.4
Supplementary max heat output (non-condensing) kW 18 17.9
Supplementary max heat output (condensing) kW 19 19
Supplementary min heat output (non-condensing) kW 3.4 3.4
Supplementary min heat output (condensing) kW 3.8 3.8
Electric output max kW 1 1
Electric output min kW 0.3 0.3
Gas mm 15 15
Flow mm 22 22
Return mm 22 22
Condensate drain mm 21.5 21.5
Power V (Hz) 230 (50) 230 (50)
Max operating current Amps 4.5 4.5
External fuse rating Amps 13 13
Circuit breaker rating (2 pole) Amps 16 16
Noise pressure level (1m) dB(A) <46 <46
Max heating flow temperature ˚C 80 80
Min heating flow temperature ˚C 25 25
Max water pressure bar 3 3
Min water pressure bar 0.2 0.2
Suitable for sealed systems Yes Yes
Compartment ventilation required No No
Integral frost protection Yes Yes
Pump overrun required Yes Yes
Pump exercise (weekly) Yes Yes
System bypass (sealed system) l/min 7 7
System bypass (open-vented) l/min 10 10
Zone valve exercise (weekly) Yes Yes
Height mm 950 950
Width mm 450 450
Depth mm 426 426
Weight empty kg 115 115
Min clearance front mm 5* 5*
Min clearance left side mm 5 5
Min clearance right side mm 60 60
Min clerance top (from top of boiler)** mm 200 200
Min clearance bottom mm 200 200
Concentric horizontal max (60 /100) m 5 5
Concentric vertical max (60 /100) m 5 5
Twin pipe vertical max (80 / 80) m 10 10
93˚ bend equivalent length (60 /100) m 1 1
135˚ bend equivalent length (60 /100) m 0.5 0.5
91.5˚ bend equivalent length (80) m 0.5 0.5
135˚ bend equivalent length (80) m 0.25 0.25
Programmable room thermostat Removable Removable
Integral wiring control V 230 230
Cylinder sensor Optional Optional
*5mm for removable door, 450mm to a fixed front/door **If horizontal flue turret, 300mm required
kW 48 24 16 6
PSR 0.5 1 1.5 4
kWh 45868.5 33903.9 24510.9 9234.6
kWh 3003.7 3003.7 3003.7 3003.7
kWh 28008.4 3034.5 114.7 0
% gross 83.6 83.9 83.1 73.1
% gross 49.2 49.2 49.2 49.2
kWhe -2259.8 -2274.6 -2252.8 -1940.4
kWhe -142.9 -142.9 -142.9 -142.9
kgCO2/kWhh 0.295 0.231 0.201 0.201
Based on typical twice daily heating periods (bimodal)
0.5 0.295
0.6 0.282
0.7 0.269
0.8 0.256
0.9 0.243
1 0.231
1.1 0.225
1.2 0.219
1.3 0.213
1.4 0.207
1.5 to 4 0.201The performance is difficult to predict with certainty due to variable patterns of use determined by householder settings, outdoor temperatures etc. This directly affects heat and electricity demand and production. The estimates are based upon the best available information, but are given as guidance only and should not be considered as a guarantee.
1. A flat vertical area is required for the installation of
the boiler.
2. These dimensions include the necessary clearances
around the boiler for case removal, spanner access and
air movement. Additional clearances may be required
for the passage of pipes around local obstructions such
as joists running parallel to the front face of the boiler.
3. Ensure that there is adequate clearance for any
lifting equipment.
200mm Min
950mm
450mm
300mm Min
5mm Min 60mm Min
5mm Min
450mm Min
For ServicingPurposes
In Operation
At Least 1.5°
426mm
Concentric Horizontal Flue System 60/100mm diameter
Standard Horizontal Telescopic Flue inc Elbow 315mm - 500mm 60 / 100mm 5118069
Standard Horizontal Flue inc Elbow 685mm 60 / 100mm 5118489
Not illustrated Telescopic Internal Flue Kit 100mm 5119654
Flue Extension 1000mm 100mm 5111074
Flue Bend 93 degree 100mm 5111075
Flue Bend (Pair) 135 degree 100mm 5111085
Flue Bend 135 degree 100mm 5111076
Not illustrated Flue Internal Fixing Kit / Wall Liner 100mm 5111067
Not illustrated Pipe Support Painted white 100mm 5111080
Not illustrated Flue Terminal Deflector 60mm 5111068
NOTE: The 3 degree fall back on concentric flues can be reduced to 1.5 degree providing the flue system is adequately clamped in accordance withthe installation instructions.
Concentric Vertical Flue System 60 / 100mm diameter
Vertical Flue Terminal 100mm 5118576
Flue Extension 1000mm 100mm 5111074
Flue Bend (Pair) 135 degree 100mm 5111085
Flue Bend 93 degree 100mm 5111075
Not illustrated Pipe Support Painted White 100mm 5111080
Pitched Roof Flashing 25 / 50 degree 125mm 5122151
Flat Roof Flashing 125mm 246144
Not illustrated Roof Cover Plate 125mm 246143
Twin Flue System 80 / 80mm diameter
Twin Pipe Flue Horizontal Terminal Kit 80mm 5120172
Vertical Flue Terminal 125mm 5111078
Twin to Concentric Adaptor 80/80 - 80/125 80 /125mm 5111084
Twin Pipe Flue Adaptor (Boiler) 80 / 80mm 720089801
Twin Pipe Extension (Pair inc Brackets) 1000mm 80mm 5111087
Twin Pipe Flue Bend (Pair) 90 degree 80mm 5111072
Twin Pipe Flue Bend (2 Pair) 135 degree 80mm 5111086
Not illustrated Twin Pipe Support (Pair) Painted white 80mm 5111081
Pitched Roof Flashing 25 / 50 degree 125mm 5122151
Not illustrated Flat Roof Flashing 125mm 246144
Not illustrated Roof Cover Plate 100mm 246143
Flue terminal positions as per BS 5440-1: 2008
Baxi offers a one day Baxi Ecogen training course
(BPEC certified) covering theory, systems, product,
application, installation and commissioning. This
course is recognised by the BRE as providing the
skills specific to Ecogen for MCS, in addition to
standard plumbing and electrical requirements.
Baxi also offers a Baxi Ecogen appreciation course.
Please contact Baxi training on 0845 600 7402 for
further details.
Our NewDesign team offers a dedicated service for
developers, architects, local authorities and housing
associations. We can tailor CAD designs and offer
advice in SAP and Code for Sustainable Homes.
We’ll do all the calculations for you, no matter how
complex they may be. We’ll provide full details of
all the options available and we’ll work with you to
deliver the most practical, cost-effective solutions.
With a dedicated team of experts working on
your behalf, to meet the requirements for Code
Levels 3 and 4, the Building Regulations and SAP
calculations, you are assured of layouts, which
comply fully with legislative requirements.
All designs are fully indemnified and custom made
to suit each individual development. Our project
database contains more than 40,000 house type
designs and has already been tried and tested by
some of the largest housing developers in the UK.
The Baxi Ecogen has a two year parts and
labour warranty.
The warranty is subject to:
1) Registration of the product with
2) An annual service
3) Installation by an installer who has successfully
completed the Baxi Ecogen training course
4) Completion of a suitable commissioning
document, which must be left on site for the
householder (Benchmark)
5) Where access may be required for specialist
lifting equipment during an engineer visit,
additional provision should be made by the
householder to protect work surfaces, kitchen
units and appliances. will not be liable
for damage to kitchen fittings or appliances in
the immediate vicinity of the Baxi Ecogen
appliance.
6) Use of a suitable dirt separator and /or use of
a magnetic cleaning device is required on all
applications
Full terms and conditions apply, contact
for details.
offers a set up and check service following
installation of the product and filling of the heating
circuit by the installer. The service includes
adjustment of parameters and handover to the
householder to ensure correct operation and
optimum efficiency. This service is chargeable and
can be arranged, via the telephone, directly with
. Simply call: 0844 871 1568.
can normally set up and check within 7 days of the
request.
Our team of expert technical advisers is readily
available. Mon to Fri 8am to 6pm / Sat 8.30am to
2pm.
Contact the team on 0844 871 1568.
We offer advice on location, electrical supply,
system design and controls selection.
A The Baxi Ecogen must be mounted on a wall that is able to accept the weight of the appliance when full of water.
Consideration must be given to safe lifting of the boiler from floor to wall, including manoeuvring over worktops.
Baxi recommends carrying out a site survey.
A The Baxi Ecogen noise pressure level is less than 46dB at a distance greater than 1m directly in front of the appliance, in line
with a conventional boiler.
A The Baxi Ecogen should be serviced once a year by a competent engineer (eg Gas Safe registered engineer who has undertaken
the Baxi Ecogen training course). The Stirling engine is sealed for life and so servicing and repair is similar to a conventional
boiler.
A No. Planning permission is not required for the Baxi Ecogen.
A Yes. The 2006 Building Regulations require no worse than regular Band B boiler carbon emissions. Ecogen has lower carbon
emissions than a regular Band A boiler. 5.3 tonnes of carbon per annum (Ecogen) vs 6.1 tonnes of carbon per annum
(Band A boiler).
A Unlike regular boilers, the carbon credentials of the Baxi Ecogen are not given in terms of a seasonal efficiency (ie SEDBUK).
Instead, a Heating Plant Emission Rate (HPER) is given for the appliance in a particular property.
The HPER gives an indication of carbon emissions of the Baxi Ecogen in a specific property and is given in kg CO2 per kWh.
Because the Baxi Ecogen is heat led (generates electricity only when there is a demand for heat), the HPER is given for each kWh
of heat generated, but the carbon value is for both heat and electric generation.
A Yes. The installer registers the Baxi Ecogen installation with Gas Safe in the same way as a standard boiler. A Building
Regulations certificate will then be issued to the householder in the normal way, to go with the Benchmark Certificate.
A There is a section of SAP dedicated for micro-CHP known as ‘appendix N’. SAP Appendix N cross references the performance
data from the SEDBUK database. Performance data appears in a dedicated micro-CHP section of the SEDBUK database.
A For most new build houses, using the Baxi Ecogen can assist in achieving CSH level 3.
A Yes, the homeowner should contact their electricity supplier to inform them that the Baxi Ecogen micro-CHP microgeneration
product has been connected to the grid.
visit
For all enquiries, please call
Open Monday - Friday, 8am - 6pm
Saturdays & Bank Holidays, 8.30am - 2pm
We are closed on Christmas Day & New Year’s Day
Please note calls may be monitored or recorded.
Baxi, A Baxi Group CompanyBrooks House, Coventry Road, Warwick CV34 4LL
B/Ecogen/spec/JUN10/V2 FCN 379548-01
Baxi policy is one of continual improvement and development. The right to change specification and appearance without prior notice is reserved. The reproduction of colours is as accurate as photographic and printing processes allow. The consumer’s statutory rights are not affected.
This Brochure is printed on paper sourced from well managed
forests, controlled sources. This Brochure is printed using
vegetable based inks. Please recycle this Brochure when you
have finished with it. Cert no. SGS-COC-003585