Baxi 1kWe specifier brochure

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%†


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


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


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


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).


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


Controls combinations



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


More comfortable


by up to 40%†


by up to 40%†


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



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



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


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

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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


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


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

Baxi 1kWe specifier brochure

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