Baxi D SERIES User manual

Range Guide
Baxi Range guide V8.qxd:17645_BAXI_RANGE_44PP_BROCH 10/8/10 14:56 Page 1

Introduction
AtBaxi,weknowalotabouthow
people react to heat. We’ve been at
the heart of people’s homes for over
a century and a half. But while our
products respond to people’s need for
warmth and wellbeing, it’s how Baxi
responds to other needs that is just as
important.
We’re committed to the requirements of our installers and the
service they offer, providing them with the right products and
support.
Our highly efficient boiler range – Baxi Platinum Combi HE A,
Baxi Duo-tec Combi HE A, Baxi Solo HE Aand Baxi Megaflo
System HE A– consists of the most energy efficient models
available, exceeding the Government’s minimum standards
and carrying a SEDBUK Band A rating. With a choice of models
suitable for all situations.
Nobody wants global warming. But everybody wants to keep
warm. As leaders in heating innovation, we realised the need to
move towards renewable energy sources some time ago. As a
result, we also have a comprehensive range of low and zero
carbon heating systems available - encompassing solar energy,
air source heating, ground source heating, combined heat and
power and naturally-based biomass fuels.
Our boilers are among the most efficient available, designed
to be easy to install, reliable and economical.
We’ve invested over £2million in our new Product Design
Centre, where each component is thoughly tested to make
sureeveryBaxiproducthasalongandefficientlife.Withthe
support and service you’d expect from one of Britain’s
leading heating appliance manufacturers, it makes your life
easier too.
2
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We offer training to the highest standards and our expertise is available nationwide. PAGE 31
Training
PAGE 4
The Baxi Platinum Combi HE A range offers an industry leading 5 year parts and labour warranty*.
Available in 24kW, 28kW, 33kW and 40kW outputs with hot water flow rates of up to 16 l/min at
35°C rise.
Through continued product development, Baxi has produced the Baxi Duo-tec Combi HE A with
24kW, 28kW, 33kW and 40kW outputs. All with a 2 year parts and labour warranty*.
Baxi Solo HE Aboilers are small in size but big in performance incorporating 12kW, 15kW, 18kW,
24kW and 30kW outputs. All with a 2 year parts and labour warranty*.
The Baxi Bermuda BBU HE is the only replacement high efficiency back boiler in the UK and comes
with a 2 year parts and labour warranty*.
The Baxi Geoflo™ is a ground source heat pump system. It works by tapping into the natural heat
found just metres below the Earth’s surface and comes with a 1 year warranty*.
The Baxi Solarflo™ system uses the Sun's solar energy to provide domestic hot water and comes
with a 10 year warranty on the flat plate collectors, 5 year warranty on evacuated tube collectors
and 2 year warranty on components*.
Baxi Biomass boilers use carbon neutral fuel such as pellets or logs from regenerated sources to
provide sustainable and environmentally friendly heat for the home and comes with 1 year
warranty*.
Generating electricity as well as heat, the Baxi DACHS mini-CHP is widely used as a more energy
efficient way to heat and power buildings, with less reliance upon centralised power generation.
Help is always on hand from heateam, the service division of Baxi Group.
Offering after sales support for all Baxi Group products, heateam has 280
Gas Safe Registered engineers nationwide.
PAGE 26
PAGE 16
PAGE 10
PAGE 7
Baxi Platinum
Combi HE A
Baxi Duo-tec
Combi HE A
Baxi Solo
HE
Baxi Bermuda
BBU HE
The Megaflo System HE A, available in 15kW, 18kW, 24kW, 28kW and 32kW outputs, is the perfect
choice for a range of applications. All with a 2 year parts and labour warranty*. PAGE 13
Baxi Megaflo
System HE A
PAGE 30
PAGE 31
Baxi Geoflo™
Baxi Solarflo™
Baxi Combined
Heat & Power
Baxi Biomass
Solid Fuel Heating
Contents
PAGE 28
PAGE 29
PAGE 27
Baxi Ambiflo™
Baxi Ambiflo™ is an air to water heat pump, providing central heating for domestic properties and
comes with 1 year warranty*.
*Subject to registration and an annual service
3
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Platinum Combi HE A
It’s certainly rare to find optimum
performance, reliability and such
intelligent design features in one boiler.
And rarer still to find it backed by an
industry-leading 5 year parts and
labour warranty*. But that’s exactly
what the Baxi Platinum Combi HE A
range offers.
It uses Baxi’s proven boiler technology, tested in our new
state-of-the-art facility for reliability. It has an intelligent control
system to automatically adjust heat output, and provides
maximum heating and hot water performance with minimum
running costs - gaining a SEDBUK Band A rating - taking
efficiency to a new level.
Key features & benefits:
• 5-year parts and labour warranty* giving customers
complete peace of mind through heateam
•SEDBUKBandArated
• Available in four outputs, 24kW, 28kW, 33kW and 40kW,
this modulating boiler fits most size systems
•Exceptional hot water flow rates from 9.8l/min to 16l/min,
suitable for larger properties
•Supplied with pre-plumbing jig for easier and labour saving
installation
•1 metre flying lead for easy electrical connection to a 3amp
plug
• Extensive flue options with flue lengths up to 20 metres for
easier and flexible siting. Telescopic flue available for quick
installation
•Built in filling loop to save time and be aesthetically pleasing
• A separate temperature control for central heating and
domestic hot water to manage water pressure safety
• Built in frost thermostat for flexibility of siting
• Suitable for use with the Multifit GasSaver, which can give
annual gas savings on DHW of up to 37% over a SEDBUK
band A boiler (see page 24)
*Subject to registration and an annual service
4
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Platinum Combi HE A
Flue elbow
Flue connection
Igniter
Stainless steel
heat exchanger
Expansion vessel
Gas valve
Diverter valve
PCB housing
Pressure gauge
and burner
Fan assembly
Pump
Pressure relief valve
Integral clock
Can be located in
unventilated
cupboards or
compartments
Exceptional flow rates
up to 16 l/min at 35oC
temp rise
Ultra low NOx
emissions class 5 -
helping to protect the
environment
Timer
as standard
SEDBUK
Band A
5
Igniter
Fully modulating
outputs
Spark electrode
Venturi
Air/gas collector
Flame sensing electrode
Condensate
trap (behind)
Combustion box cover
Baxi Range guide V8.qxd:17645_BAXI_RANGE_44PP_BROCH 10/8/10 14:56 Page 5

Baxi Platinum Combi HE ASeries: Wall mounted high efficiency combination boilers
24 HE A28 HE A33 HE A40 HE A
Platinum Combi HE A
CONTROLS
Concealed User Controls Yes Yes Yes Yes
On/Off Switch with Reset Yes Yes Yes Yes
User Adjustable DHW Temperature Yes Yes Yes Yes
User Adjustable CH Temperature Yes Yes Yes Yes
LED Temp/Status/Fault Diagnosis Display 2 digits/3 LEDs 2 digits/3 LEDs 2 digits/3 LEDs 2 digits/3 LEDs
Integral 24 hour Electro-mechanical Timer Fitted as standard Fitted as standard Fitted as standard Fitted as standard
GAS
GasSupplyPipeSize mm 22222222
Natural Gas Yes Yes Yes Yes
LPG (Butane/Propane) No No No No
Nominal Inlet Supply Pressure mbar 20 20 20 20
Maximum Gas Rate m3/hr 2.61 3.10 3.6 4.36
Heat Input Central Heating kW Max Gross 22.7 27.4 32.1 36.4
kW Max Net 20.5 24.7 28.9 32.8
kW Min Gross 7.8 10 10.8 11
kW Min Net 7.0 9.0 9.7 9.9
Heat Output CH Non Condensing kW Max 20 24 28 32
(70° Mean Water temp) kW Min 6.8 8.7 9.4 9.6
Heat Output CH Condensing kW Max 21 25.9 30.3 34.4
(40° Mean Water temp) kW Min 7.4 9.5 10.2 12.1
Heat Input Domestic Hot Water kW Max Gross 27.4 32.1 37.7 45.7
(DHW) kW Max Net 24.7 28.9 34 41.2
Heat Output Domestic Hot Water kW Max 24 28 33 40
Maximum Domestic
Hot Water Flow Rate l/min @ 35°C Rise 9.8 11.5 13.5 16
Seasonal Efficiency % 91.1 91.1 91.1 91.1
SEDBUK Rating Band A A A A
NOxClass 5 5 5 5
NOxLevels mg / kWhr 22.3 26.0 21.8 25.2
ELECTRICAL
Electrical Supply Volts / Hz 230V / 50Hz 230V / 50Hz 230V / 50Hz 230V / 50Hz
Permanent Live Required Yes Yes Yes Yes
Fitted Electrical Cable 1m x 3 core x 0.75mm 2
Power Consumption Watts 155 155 160 160
External Fuse Rating Amps 3 3 3 3
Internal Fuse Rating Amps F2L F2L F2L F2L
Ingress Protection Rating (without electro-mechanical timer fitted) IPX 5D IPX 5D IPX 5D IPX 5D
24 hour Pump Exercise Yes Yes Yes Yes
Pump Overrun Yes Yes Yes Yes
Integral 'Boiler Only' Frost Thermostat Yes Yes Yes Yes
MECHANICAL & HYDRAULIC
Compartment Ventilation Requirement None None None None
Pre-plumbing/Wall Mounting Jig Yes Yes Yes Yes
Flow&ReturnPipeSize mm 22 22 22 22
Condensate Discharge Pipe Size mm 21.5 21.5 21.5 21.5
Integral Automatic Bypass Yes Yes Yes Yes
Min Domestic Hot Water Flow Rate l/min 2 2 2 2
Min Domestic Hot Water Operating Pressure bar 0.15 0.15 0.15 0.15
Maximum DHW System Pressure bar 8 8 8 8
Safety Discharge Pressure bar 3 3 3 3
Integral Expansion Vessel Capacity litres 8 8 10 10
Max Capacity of Central Heating System litres 125 125 155 155
Temporary Filling Loop included Yes Yes Yes Yes
CH System Inhibitor Required Hard Water only
CONCENTRIC FLUE SYSTEM
Standard Telescopic Horizontal Flue Kit Length mm 315 - 500 315 - 500 315 - 500 315 - 500
Max Equiv Length Horizontal/Vertical (60/100mm) m 10 10 10 10
Max Equiv Length Horizontal/Vertical (80/125mm) m 20 20 20 20
Equivalent Length per 135oBend m 0.5 0.5 0.5 0.5
Equivalent Length per 93oBend m 1 1 1 1
TWIN PIPE FLUE SYSTEM
Diameters mm 80 / 80 80 / 80 80 / 80 80 / 80
Max Equiv Length Horizontal/Vertical
(parallel pipes) m 15/15 15/15 15/15 15/15
Equivalent Length per 135° Bend m 0.25 0.25 0.25 0.25
Equivalent Length per 91.5° Bend m 0.5 0.5 0.5 0.5
WEIGHTS
Max Installation Lift Weight kg 43.6 44.2 45 45
Gross Packaged Boiler Weight kg 48.6 49.2 50 50
6
200mm Min
780mm
270mm
200mm Min
5mm Min 5mm Min
450mm
180mm
150mm Min*
780mm
450mm
200mm Min
(300mm Min if
using 80/125mm
flueing system)
5mm Min
5mm Min
450mm Min
For Servicing
Purposes
In Operation
5mm Min
At least 1.5°
345mm
* This is the MINIMUM recommended dimension.
Greater clearance will aid installation and maintenance.
Baxi Range guide V8.qxd:17645_BAXI_RANGE_44PP_BROCH 10/8/10 14:56 Page 6

Duo-tec Combi HE A
• Exceptional hot water flow rates from 9.8l/m to 16l/min,
suitable for larger properties
• Supplied with pre-plumbing jig for easier and labour saving
installation
• Telescopic horizontal flue available for quick installation
• Built in filling loop to save time and be aesthetically pleasing
• A separate temperature control for central heating and
domestic hot water
• Built in frost thermostat for flexibility of siting
• Suitable for use with the Multifit GasSaver, which can give
annual gas savings on DHW of up to 37% over a SEDBUK
band A boiler.
*Subject toreg
istration and an annual service
'The Baxi Duo-tec
Combi 28HE is
CORGI Boiler of the
Year 2008.'
Taking proven combi boiler technology
and constantly developing it has
produced the Baxi Duo-tec Combi HE A.
Its compact case dimensions and 100mm diameter standard
flue make fitting it in confined spaces a breeze. Copper tails
for water and gas connections, and isolating valves mounted
on a pre-plumbing jig make installation even easier.
We’ve given all four Baxi Duo-tec Combi HE Amodels an easy
to read pressure gauge.
Not only will customers love the look of the Baxi Duo-tec Combi
HE A, they’ll also love its energy efficiency.
Key features & benefits:
• 2-year parts and labour warranty* giving customers
complete peace of mind through our heateam
• SEDBUK Band A rated
• Available in four outputs 24kW, 28kW, 33kW and 40kW, this
modulating boiler fits most sized systems. 24kW, 28kW and
33kW are also available as LPG models
7
Baxi Range guide V8.qxd:17645_BAXI_RANGE_44PP_BROCH 10/8/10 14:56 Page 7

Flue elbow
Flue connection
Igniter
Stainless steel
heat exchanger
Expansion vessel
Gas valve
Diverter valve
PCB housing
Pressure gauge
and burner
Fan assembly
Pump
Pressure relief valve
Integral clock (optional)
LPG
Can be located in
unventilated
cupboards or
compartments
Exceptional flow rates
of up to 16 l/min
at 35oC temp rise
SEDBUK
Band A
Fully modulating
outputs
Ultra low NOx
emissions class 5 -
helping to protect the
environment
24kW, 28kW and
33kW are available as
LPG models
8
Duo-tec Combi HE A
Spark electrode
Venturi
Combustion box cover
Condensate
trap (behind)
Flame sensing electrode
Air/gas collector
Baxi Range guide V8.qxd:17645_BAXI_RANGE_44PP_BROCH 10/8/10 14:56 Page 8

Baxi Duo-tec Combi HE ASeries: Wall mounted high efficiency combination boilers
24 HE A28 HE A33 HE A40 HE A
CONTROLS
Concealed User Controls Yes Yes Yes Yes
On/Off Switch with Reset Yes Yes Yes Yes
User Adjustable DHW Temperature Yes Yes Yes Yes
User Adjustable CH Temperature Yes Yes Yes Yes
LED Temp/Status/Fault Diagnosis Display 2 digits/3 LEDs 2 digits/3 LEDs 2 digits/3 LEDs 2 digits/3 LEDs
GAS
Gas Supply Pipe Size mm 22 22 22 22
Natural Gas Yes Yes Yes Yes
LPG (Butane/Propane) Yes Yes Yes No
Nominal Inlet Supply Pressure NG/LPG mbar 20 /N/A 20 /37 20 / N/A 20 / N/A
Maximum Gas Rate NG/LPG m3/hr / kg/hr 2.61/1.92 3.10/2.32 3.59/2.64 4.36/N/A
Heat Input Central Heating kW Max Gross 22.7 27.4 32.1 36.4
kW Max Net 20.5 24.7 28.9 32.8
kW Min Gross 7.8 10.0 10.8 11
kW Min Net 7 9 9.7 9.9
Heat Output CH Non Condensing kW Max 20 24 28 32
(70° Mean) kW Min 6.8 8.7 9.4 9.6
Heat Output CH Condensing kW Max 21 25.9 30.3 34.4
(40° Mean) kW Min 7.4 9.5 10.2 12.1
Heat Input Domestic Hot Water kW Max Gross 27.4 32.1 37.7 45.7
kW Max Net 24.7 28.9 34 41.2
Heat Output Domestic Hot Water kW Max 24 28 33 40
Maximum Domestic
Hot Water Flow Rate l/min @ 35°C Rise 9.8 11.5 13.5 16
Seasonal Efficiency NG/LPG % 91.1/93.2 91.1/93.2 91.1/93.2 91.1/N/A
SEDBUK Rating Band A A A A
NOxClass 5555
NOxLevels mg / kWhr 22.3 26.0 21.8 25.2
ELECTRICAL
Electrical Supply Volts / Hz 230V / 50Hz 230V / 50Hz 230V / 50Hz 230V / 50Hz
Permanent Live Required Yes Yes Yes Yes
Fitted Electrical Cable 1m x 3 core x 0.75mm 2
Power Consumption Watts 155 155 160 160
External Fuse Rating Amps 3 3 3 3
Internal Fuse Rating Amps F2L F2L F2L F2L
Ingress Protection Rating (without electro-mechanical timer fitted) IPX 5D IPX 5D IPX 5D IPX 5D
24 hour Pump Exercise Yes Yes Yes Yes
Pump Overrun Yes Yes Yes Yes
Integral 'Boiler Only' Frost Thermostat Yes Yes Yes Yes
MECHANICAL & HYDRAULIC
Compartment Ventilation Requirement None None None None
Pre-plumbing/Wall Mounting Jig Yes Yes Yes Yes
Flow&ReturnPipeSize mm 22222222
Condensate Discharge Pipe Size mm 21.5 21.5 21.5 21.5
Integral Automatic Bypass Yes Yes Yes Yes
Min Domestic Hot Water Flow Rate l/min 2 2 2 2
Min Domestic Hot Water Operating Pressure bar 0.15 0.15 0.15 0.15
Maximum DHW System Pressure bar 8 8 8 8
Safety Discharge Pressure bar 3 3 3 3
Integral Expansion Vessel Capacity litres 8 8 10 10
Max Capacity of Central Heating System litres 125 125 155 155
Filling Loop included Yes Yes Yes Yes
CH System Inhibitor Required Hard Water only
CONCENTRIC FLUE SYSTEM
Standard Telescopic Horizontal Flue Kit Length mm 315 - 500
Max Equiv Length Horizontal/Vertical (60/100mm) m 10 10 10 10
Max Equiv Length Horizontal/Vertical (80/125mm) m 20 20 20 20
Equivalent Length per 135° Bend m 0.5 0.5 0.5 0.5
Equivalent Length per 93° Bend m 1 1 1 1
TWIN PIPE FLUE SYSTEM
Diameters mm 80 / 80 80 / 80 80 / 80 80 / 80
Max Equiv Length Horizontal/Vertical (parallel pipes) m 15/15 15/15 15/15 15/15
Equivalent Length per 135° Bend m 0.25 0.25 0.25 0.25
Equivalent Length per 91.5° Bend m 0.5 0.5 0.5 0.5
WEIGHTS
Max Installation Lift Weight kg 43.6 44.2 46 46
Gross Packaged Boiler Weight kg 48.6 49.2 51 51
9
Duo-tec Combi HE A
200mm Min
780mm
270mm
200mm Min
5mm Min 5mm Min
450mm
180mm
* This is the MINIMUM recommended dimension.
Greater clearance will aid installation and maintenance.
150mm Min*
780mm
450mm
200mm Min
(300mm Min if
using 80/125mm
flueing system)
5mm Min
5mm Min
450mm Min
For Servicing
Purposes
In Operation
5mm Min
At least 1.5°
345mm
Baxi Range guide V8.qxd:17645_BAXI_RANGE_44PP_BROCH 10/8/10 14:56 Page 9

Baxi Solo HE Aboilers have always been
popular with both installers and
homeowners alike.
The simple contemporary lines and soft curves are bound to
appeal to customers, as will the beautifully simple controls
that
make it easy to use. It’s clean, compact
design makes it
perfect where space is limited.
It may be small in size, but it’s big in performance, with an
extended range of models now available, making it the perfect
heating only choice for any size property.
Key features & benefits:
• 2-year parts and labour warranty* giving customers
complete peace of mind through our heateam
Solo HE A
• SEDBUK Band A rated
• Available in five outputs 12kW, 15kW, 18kW, 24kW and
30kW
• Fully modulating, reducing fuel consumption and prolonging
boiler life
• Lightweight, compact design for flexible siting
• Can be installed on a fully TRV system
• Simple controls for easy operation
• No pump overrun required, meaning this boiler will directly
replace any existing heat only boiler
*Subjecttor
egistration and an annual service
10
Baxi Range guide V8.qxd:17645_BAXI_RANGE_44PP_BROCH 10/8/10 14:57 Page 10

Return pipe
connection (behind)
Heat exchanger
Burner
Airbox
Fan protection
thermostat
Condensate trap
Wiring terminal
Flow switch
Gas valve (behind)
Fan assembly
PCB housing
The Baxi Solo HE Ais compatible with the Heatrae Sadia Megaflo HE SystemFit cylinder
• Available in 125-300 litre capacities
• Supplied with primary expansion vessel, programmable thermostat and room sensor
• Up to 70% quicker to install
• Lifetime on-site parts and labour cylinder guarantee, 5 year guarantee on cold water
controls and primary expansion vessel and 2 year guarantee on all other parts
For further details on the Megaflo range, please call 01603 420220 or visit www.heatraesadia.com
Megaflo HE SystemFit
11
Solo HE A
Flow pipe
connection
Can be located in
unventilated
cupboards or
compartments
Ultra low NOx
emissions class 5 -
helping to protect the
environment
SEDBUK
Band A
Fully modulating
outputs
Baxi Range guide V8.qxd:17645_BAXI_RANGE_44PP_BROCH 10/8/10 14:57 Page 11

Baxi Solo HE ASeries: Wall mounted
high efficiency boilers 12 HE A15 HE A18 HE A24 HE A30 HE A
12
Solo HE A
CONTROLS
Concealed User Controls Yes Yes Yes Yes Yes
User Adjustable CH Temperature Yes Yes Yes Yes Yes
LED Status/Fault Diagnosis Display Yes Yes Yes Yes Yes
GAS
Gas Supply Pipe Size mm 15 15 15 15 15
Natural Gas Yes Yes Yes Yes Yes
LPG (Butane/Propane) No No No No No
Nominal Inlet Supply Pressure mbar 20 20 20 20 20
Maximum Gas Rate m3/hr 1.34 1.64 1.94 2.31 2.95
Heat Input Central Heating kW Max Gross 13.3 16.9 20.2 24.5 33.8
kW Max Net 12.0 15.2 18.2 22.1 30.4
Heat Output CH Non Condensing kW Max 11.8 15.2 17.8 22 30.2
Heat Output CH Condensing kW Max 12.8 16.5 19.3 23.8 32.6
Seasonal Efficiency % 90.5 91.3 90.4 90.9 90.9
SEDBUK Rating Band A A A A A
NOxClass 5 5 5 5 5
NOxLevels mg / kWh 13.1 29.0 11.7 37.0 48.0
ELECTRICAL
Electrical Supply Volts / Hz 230V / 50Hz 230V / 50Hz 230V / 50Hz 230V / 50Hz 230V / 50Hz
Permanent Live Required No No No No No
Electrical Cable Required 3 core x 0.75mm
2
Power Consumption Watts 80 80 80 80 80
External Fuse Rating Amps 3 3 3 3 3
Internal Fuse Rating Amps 3.15 3.15 3.15 3.15 3.15
Ingress Protection Rating IPX2 IPX2 IPX2 IPX2 IPX2
(without electro-mechanical timer fitted)
Integral 'Boiler Only' Frost Thermostat No No No No No
Pump Overrun No No No No No
MECHANICAL & HYDRAULIC
Compartment Ventilation Required None None None None None
Flow & Return Pipe Size mm 22 22 22 22 22
Condensate Discharge Pipe Connection mm 21.5 21.5 21.5 21.5 21.5
Bypass Required No No No No No
Vertical Pipe Route Within Case
CH System Inhibitor Required Yes Yes Yes Yes Yes
CONCENTRIC FLUE SYSTEM
Outside Diameter mm 110 110 110 110 110
Standard Horizontal Flue Kit Length mm 850 850 850 850 850
Max Equivalent Length Horizontal m 4 plus Terminal
Max Equivalent Length Vertical m 4 plus Terminal
Equivalent Length per 135° Bend m 0.5 0.5 0.5 0.5 0.5
Equivalent Length per 93° Bend m 1 1 1 1 1
TWIN PIPE FLUE SYSTEM
Diameters mm 80/80 80/80 80/80 80/80 80/80
Max Equivalent Length Horizontal
(parallel pipes) m 75 75 75 75 75
Max Equivalent Length Vertical
(parallel pipes) m 75 75 75 75 75
Equivalent Length per 135° Bend m 1.3 Air & 2.6 Flue
Equivalent Length per 90° Bend m 4.8 Air & 9.6 Flue
WEIGHTS
Max Installer Lift Weight kg 26 26 26 26 26
Gross Packaged Boiler Weight kg 36.2 36.2 36.2 36.2 36.2
5mm Min
500mm Min
For Servicing
Purposes
In Operation
At least 1.5°
298mm
50mm Min
600mm
390mm
200mm Min
5mm Min
5mm Min
Baxi Range guide V8.qxd:17645_BAXI_RANGE_44PP_BROCH 10/8/10 14:57 Page 12

The Baxi Megaflo System HE Ais
designed for fully pumped sealed
systems - and because it’s fully
modulating, it’s the perfect choice for a
wide range of applications.
The Baxi Megaflo System HE A also works with central
heating and indirect hot water systems.
It’s ideal for fitting in unventilated cupboards, and comes with
a wall mounting frame and integral isolating valves for easy
pre-plumbing and flushing of the system prior to fitting.
Key features & benefits:
• 2-year parts and labour warranty* giving customers
complete peace of mind through our heateam
Megaflo System HE A
• SEDBUK Band A rated
• Available in five outputs; 15kW, 18kW, 24kW, 28kW and
32kW, this modulating boiler fits most size systems.
The 18kW, 28kW and 32kW are also available as LPG models
• Supplied with pre-plumbing jig for easier and labour saving
installation
• Integral automatic bypass, suitable for systems
incorporating TRVs to every radiator
• Comprehensive range of flue options for quick installation
• Built in frost thermostat for flexible siting
*Subject to registration and an annual service
13
Baxi Range guide V8.qxd:17645_BAXI_RANGE_44PP_BROCH 10/8/10 14:57 Page 13

Combustion box cover
and burner
Igniter
Stainless steel
heat exchanger
Expansion vessel
Air/gas collector
Venturi
Gas valve
Condensate trap (behind)
PCB housing
Pressure gauge
Spark electrode
Flame sensing electrode
Fan assembly
Pump
Pressure relief valve
The Baxi Megaflo System HE A is compatible with the Heatrae Sadia Megaflo HE unvented cylinder
• Available in 70-300 litre options in both direct and indirect models
• Patented internal floating baffle system to accommodate hot water expansion
• High performance 'coil in coil' heat exchanger
• Lifetime year on-site parts and labour cylinder guarantee, 5 year guarantee on cold water controls
and 2 year guarantee on all other parts
For further details on the Megaflo range, please call 01603 420220 or visit www.heatraesadia.com
Megaflo HE Unvented Cylinder
Canbelocatedin
unventilated
cupboards or
compartments
Ultra low NOx
emissions class 5 -
helping to protect the
environment
SEDBUK
Band A
Fully modulating
outputs
LPG
18kW, 28kW and
32kW are available as
LPG models
14
Megaflo System HE A
Baxi Range guide V8.qxd:17645_BAXI_RANGE_44PP_BROCH 10/8/10 14:57 Page 14

Baxi Megaflo System HE A: Wall mounted
high efficiency boilers 15 HE A18 HE A24 HE A28 HE A32 HE A
CONTROLS
Concealed User Controls Yes Yes Yes Yes Yes
On/Off Switch with Reset Yes Yes Yes Yes Yes
User Adjustable CH Temperature Yes Yes Yes Yes Yes
LED Temp/Status/Fault Diagnosis Display 2 digits & 3 LEDs
GAS
GasSupplyPipeSize mm 2222222222
Natural Gas Yes Yes Yes Yes Yes
LPG (Butane/Propane) No Yes No Yes Yes
Nominal Inlet Supply Pressure mbar 20 20 20 20 20
Max Gas Rate NG/LPG m3/hr / kg/hr 1.69/N/A 1.95/1.44 2.61/N/A 3.10/2.25 3.48/2.49
Heat Input Central Heating kW Max Gross 17.1 20.5 27.4 32.1 36.4
kW Max Net 15.4 18.5 24.7 28.9 32.8
kW Min Gross 4.4 4.8 7.8 10.8 10.8
kW Min Net 4.0 4.3 7 9.7 9.7
Heat Output CH Non Condensing (70° Mean) kW Max 15 18 24 28 32
kW Min 3.9 4.2 6.8 9.4 9.4
Heat Output CH Condensing (40° Mean) kW Max 16.2 19.4 25.9 30.3 34.4
kW Min 4.2 4.5 7.4 10.2 10.2
Seasonal Efficiency NG/LPG % 91.2/N/A 91.2/93.2 91.2/N/A 91.2/93.2 91.2/93.2
SEDBUK Rating Band A A A A A
NOxClass 5 5 5 5 5
NOxLevels mg / kWhr 27.5 31.7 22.3 21.8 26.8
ELECTRICAL
Electrical Supply Volts / Hz 230V / 50Hz
Permanent Live Required Yes Yes Yes Yes Yes
Fitted Electrical Cable 1m x 3 core x 0.75mm2
Power Consumption Watts 130 140 150 160 160
External Fuse Rating Amps 3 3 3 3 3
Internal Fuse Rating Amps F2L F2L F2L F2L F2L
Ingress Protection Rating IPX5D IPX5D IPX5D IPX5D IPX5D
(without electro-mechanical timer fitted)
24 hour Pump Exercise Yes Yes Yes Yes Yes
Pump Overrun Yes Yes Yes Yes Yes
Integral 'Boiler Only' Frost Thermostat Yes Yes Yes Yes Yes
MECHANICAL & HYDRAULIC
Compartment Ventilation Requirement None None None None None
Pre-plumbing/Wall Mounting Jig Yes Yes Yes Yes Yes
Flow/ReturnPipeSize mm 22 22 22 22 22
Condensate Discharge Pipe Size mm 21.5 21.5 21.5 21.5 21.5
Integral Automatic Bypass Yes Yes Yes Yes Yes
Safety Discharge Pressure bar 3 3 3 3 3
Integral Expansion Vessel litres 8 8 8 10 10
Maximum Capacity of CH System litres 125 125 125 125 125
CH System Inhibitor Required Yes Yes Yes Yes Yes
CONCENTRIC FLUE SYSTEM
Standard Telescopic Horizontal Flue
Kit Length mm 315 - 500 315 - 500 315 - 500 315 - 500 315 - 500
Max Equivalent Length
Horizontal/Vertical (60/100mm) m 10 10 10 10 10
Max Equivalent Length Vertical
Horizontal/Vertical (80/125m) m 20 20 20 20 20
Equivalent Length per 135° Bend m 0.5 0.5 0.5 0.5 0.5
Equivalent Length per 93° Bend m 1 1 1 1 1
TWIN PIPE FLUE SYSTEM
Diameters mm 80/80 80/80 80/80 80/80 80/80
Max Equivalent Length Horizontal/Vertical
(parallel pipes) m 15/15 15/15 15/15 15/15 15/15
Equivalent Length per 135° Bend m 0.25 0.25 0.25 0.25 0.25
Equivalent Length per 91.5° Bend m 0.5 0.5 0.5 0.5 0.5
WEIGHTS
Max Installation Lift Weight kg 38.6 38.6 39.2 41 41
Gross Packaged Boiler Weight kg 43.6 43.6 44.2 46 46
15
Megaflo System HE A
5mm Min
450mm Min
For Servicing
Purposes
In Operation
At least 1.5°
345mm
200mm Min
780mm
450mm
200mm Min
(300mm Min if
using 80/125mm
flueing system)
5mm Min 5mm Min
Baxi Range guide V8.qxd:17645_BAXI_RANGE_44PP_BROCH 10/8/10 14:57 Page 15

Bermuda BBU HE
16
The original Baxi Bermuda Back Boiler
Unit (BBU), launched in 1966, was so
practical and reliable that Baxi
installations accounted for 80% of the
back boilers installed in the UK.
Times changed and so did boilers, but with the introduction of
our innovative new. Baxi Bermuda BBU HE we continue our
tradition of back boiler expertise. As the only high efficiency
BBU in the UK, it’s the easiest way to replace an existing BBU.
The Baxi Bermuda BBU HE has been specifically designed to
work with the Valor Dimension™ range of BBU Firefronts.
Key features & benefits -
Baxi Bermuda BBU HE
• 2-year parts and labour warranty* giving customers
complete peace of mind through our heateam
• SEDBUK Band A rated
• 15kW heat output; modulating boiler adapts to heat
demand ensuring optimum performance at all times
• Built in condensate pump and no pump overrun required,
to ease installation
• Factory set to enable easy boiler commissioning
• Single piece flexible concentric flue; eliminates the need to
provide flue inspection access
• Room sealed appliance; eliminating the need for air vents in
the room
• Simple to use external boiler controls located on the
dedicated Valor Dimension™ firefront
• Quiet in operation
Key features & benefits -
Valor Dimension™
• 2-year parts and labour warranty* giving customers
complete peace of mind through heateam
• Traditional and contemporary fire front designs
• Running costs for the fire using the ‘effect’, are less than
2p per day
• Heat outputs of 1kW and 2kW
• No servicing required
• The BBU Firefront range is a unique range dedicated to the
Baxi Bermuda Back Boiler Unit package
*Subject to registration and an annual service
Gas Industry
Innovation Award 2010
Baxi Range guide V8.qxd:17645_BAXI_RANGE_44PP_BROCH 10/8/10 14:57 Page 16

17
Bermuda BBU HE
1. Automatic Air Vent 11. Fan
2. Flue Connection 12. Drain
3. Spark Generator (located behind PCB) 13. Return Connection
4. Spark & Sensing Electrodes (located behind PCB) 14. Air Sampling Point
5. Heat Exchanger (located behind PCB) 15. Flue Sampling Point
6. User Interface Connector 16. Flow Connection
7. Control Wiring Connector 17. Condensate Outlet
8. Condensate Sump 18. PCB Control Box
9. Gas Cock 19. Boiler Control (cover open)
10. Condensate Pump
The 3D diagram below displays the key components of the Baxi Bermuda BBU HE.
Baxi Range guide V8.qxd:17645_BAXI_RANGE_44PP_BROCH 10/8/10 14:57 Page 17

560mm min
Fireplace
Opening
390mm min
490mm max
584mm min
595mm max
570mm min
Builders
Opening
(575mm max Valour Dimension
Regalia ONLY)
SURROUND OR FINISHED
WALL FACE
560mm minimum 590mm maximum
570mm minimum
305mm minimum
Solid, non combustible hearth
to support the boiler,
as specified in BS 5871.
HEARTH
LEVEL
538mm
306mm
383mm
Boiler dimensions
Site requirements†
Site requirements†
1 To accommodate the firefront without the need for additional spacers, there must be a gap of at least 95mm from the surround or finished face to the front
of the boiler.
2 If necessary this gap can be increased by the use of Frame Extension Kits. Each extension increases the effective depth of the opening by up to 50mm.
Alternatively, a range of rebated fire surrounds are available (please see page 13 for details).
Baxi Bermuda BBU HE
CONTROLS
Concealed User Controls Yes
User Adjustable CH Temperature Factory Preset
LED Status/Fault Diagnosis Display Yes
GAS
Gas Supply Pipe Size mm 15mm compression
Natural Gas Yes
LPG (Butane/Propane) No
Nominal Inlet Supply Pressure m3/hr 20
Maximum Gas Rate 1.63
Heat Input Central Heating kW Max Gross 17.1
kW Max Net 15.38
Heat Output CH Non Condensing kW Max 15
Heat Output CH Condensing kW Max 15.7
% 90.1
SEDBUK Rating Band A
Nox Class 5
Nox Levels mg/kWh 31
ELECTRICAL
Electrical Supply Volts/Hz 230/50Hz
Permanent Live Required Yes
Electrical Cable Required 3 core x 0.75mm2
Power Consumption Watts 112
External Fuse Rating Amps 3
Internal Fuse Rating Amps 3.15
Ingress Protection Rating IPXO
Pump Overrun
not required
MECHANICAL & HYDRAULIC
Compartment Ventilation Required No
Flow & Return Pipe Size mm 22 male copper
Condensate Discharge Pipe Connection mm 10
Bypass Required Yes (pressure operated)
Vertical Pipe Route no inverted pipework permitted
CH System Inhibitor Required Yes
CONCENTRIC FLUE SYSTEM
Outside Diameter mm 100
Max Equivalent Length Vertical m 10 or 12.5
WEIGHTS
Max Installer Lift Weight kg 27
Gross Packaged Boiler Weight kg 28
ACCESSORIES
Right Hand Plumb Kit Sales Code 720111701
BBU Condensate Pipe Adaptor Sales Code 720415801
18
Bermuda BBU HE
Baxi Range guide V8.qxd:17645_BAXI_RANGE_44PP_BROCH 10/8/10 14:57 Page 18

19
Bermuda BBU HE
Valor Fire, Surround, Back Panel
and Hearth Technical Specification
FIRES All measurements given in mm
Model Fire only Boiler & Fire Fascia Height Fascia Width Fascia Depth Engine Depth Spacer Depth
Valor DimensionTM Classica Brass BBU Firefront 0584721 720330701 615 512 51 144 50
Valor DimensionTM Classica Pewter BBU Firefront 0584701 720330801 615 512 51 144 50
Valor DimensionTM Classica Black BBU Firefront 05847B1 720330901 615 512 51 144 50
Valor DimensionTM Dream Gold BBU Firefront 05847C1 720331001 636 518 79 144 50
Valor DimensionTM Dream Chrome BBU Firefront 05847D1 720331101 636 518 79 144 50
Valor DimensionTM Dream Black BBU Firefront 05847E1 720331201 636 518 79 144 50
Valor DimensionTM Innova BBU Firefront 0584711 720331301 632 542 38 144 50
Valor DimensionTM Regalia BBU Firefront 05847A1 720331401 720 600 45 144 50
Valor DimensionTM Nano Chrome BBU Firefront 0584521 720331501 616 512 49 144 50
Valor DimensionTM Lyrica BBU Firefront 0584511 720331601 612 510 74 144 50
SURROUNDS* AND ACCESSORIES All measurements given in mm
Model Part Number Height Width Depth Rebate
Calista Oak 6" Rebate Surround 05070P3 1084 1230 220 150
Barcelona Black 6" Rebate Solo-pro Surround 0507052 1032 1170 200 150
Calista Oak Surround 05070B1 1084 1230 190 75/25
Calista Mahogany Surround 05070C1 1084 1230 190 75/25
Clarissa Oak Surround 05070A1 1097 1230 190 75/25
Barcelona Black Surround 05070M2 1032 1170 150 25
Olympia Cream Surround 05070G2 1055 1180 170 25
Teviot White Surround Set 05070W3 1100 1200 380 75
Teviot Maple Surround Set 05070X2 1100 1200 380 75
Medway Oak Surround Set 05070X3 1100 1200 380 75
Medway Mahogany Surround Set 05070Y2 1100 1200 380 75
Solo-Pro 48" Hearth with Back Panel Black 0507011 990 1220 375 NA
Solo-Pro 48" Hearth with Back Panel Cream 0507001 990 1220 375 NA
Solo-Pro 48" Hearth with Back Panel White 0507012 990 1220 375 NA
Classica, Lyrica, Nano & Innova Spacer Kit 5135632 610 503 50 NA
Regalia Spacer Kit 5135633 715 586 50 NA
Dream Spacer Kit 5135634 625 504 50 NA
*Please note that a fire surround (new or existing) is required to complete the installation in order to conceal the builders opening.
This fire is floor standing only.
Valor DimensionTM Lyrica Brass with Medway Surround
Baxi Range guide V8.qxd:17645_BAXI_RANGE_44PP_BROCH 10/8/10 14:57 Page 19

Key Item Description Specification OD Multifit
Dimensions Sales Code
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 with
the installation instructions.
Key Item Description Specification OD Multifit
Dimensions Sales Code
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
GROUP A Concentric Horizontal Flue System 60/100mm diameter for use with Platinum Combi HE A,Duo-tecCombiHEAand Megaflo HE A
GROUP A Concentric Vertical Flue System 60/100mm diameter for use with Platinum Combi HE A, Duo-tec Combi HE Aand Megaflo HE A
20
1. Baxi Boilers can be fitted with flue systems as illustrated.
2. The standard flue is suitable only for horizontal termination
applications.
3. Maximum permissible equivalent flue lengths for Platinum
Combi HE, Duo-tec Combi HE A, Megaflo HE Aare:
Group A Group G
Horizontal Concentric 10 metres 20 metres
Vertical Concentric 10 metres 20 metres
Horizontal Twin pipe 15 metres
Vertical Twin Pipe 15 metres
Maximum permissible equivalent flue lengths for Solo HE Aare:
Horizontal Concentric 4 metres
Vertical Concentric 4 metres
Horizontal Twin pipe 75 metres (parallel pipes)
Vertical Twin Pipe 75 metres (parallel pipes)
4. Any additional “in line” bends in the flue system must be taken
into consideration. Their equivalent lengths for Platinum
Combi HE A, Duo-tec Combi HE A, Megaflo HE Aare:
Group A Group G
Concentric Pipes 135° bend 0.5 metres
93° bend 1 metre
The elbow supplied with the standard horizontal telescopic flue kit
is not included in any equivalent length calculations for
Platinum Combi HE A, Duo-tec Combi HE A,MegafloHEAare:
Group A Group G
Twin Flue Pipe 135° bend 0.25 metres
91.5° bend 0.50 metres
The elbow supplied with the standard horizontal telescopic flue kit is
not included in any equivalent lenth calculations for Solo HE Aare:
Twin Flue Pipe 135° bend (air duct) 1.3 m
135° bend (flue duct) 2.6 m
91.5° bend (air duct) 4.8 m
91.5° bend (flue duct) 9.6 m
The elbow supplied with the boiler is not included in any equivalent
length calculations.
5. The illustrations show examples of permissible flue systems.
6. Instructions for guidance and fitting are included in each kit,
where appropriate.
Flue Options
Flue Options
Baxi Range guide V8.qxd:17645_BAXI_RANGE_44PP_BROCH 10/8/10 14:57 Page 20