Baxi Duo-tec Combi HE A User manual

There’s no feeling quite like coming home on a cold
day knowing it’s going to be warm and cosy indoors. Or
turning on the hot tap to be rewarded with an endless
supply of hot water.
Combi boilers provide central heating and give you
plenty of hot water when you turn on the hot tap.
This means they’re economical to run, as hot water is
only produced when you need it. What’s more, there’s
no need for a tank in the loft or a hot water storage
cylinder, perfect if space is at a premium.
Installing a new Baxi boiler doesn’t have to be daunting.
Quite the opposite, in fact, if you’re used to living with a
boiler that’s over 10 years old, you’ll be amazed at the
savings you can make by replacing it with a new one.
Even if your boiler is still working well, replacing it could
make perfect sense. A fully functioning, regularly serviced
boiler that’s 10 years old could cost around £300* more
in annual heating bills than a new model.
A rm favourite with homeowners and installers alike,
Baxi is one of Europe’s largest and longest-established
boiler manufacturers. We’ve had experience in the
heating industry since 1866 - so we know a thing or
two about quality heating. We’re very proud of our long
heritage of quality and innovation and that we continue
to manufacture here in the UK.
Baxi boilers carry the
Energy Saving Trust
Recommended logo.
They have been designed
to operate at maximum
efciency throughout
their lifetime, giving you a
lifetime of reliability and
cost savings and benets
the environment through
reduced carbon emissions.
Introducing the Baxi Duo-tec Combi HE A
Why choose Baxi?Why choose a combi boiler?
Baxi Duo-tec Combi HE A
When you buy a new boiler, we
understand that it is a considerable
investment. That’s why we want to make
sure you have a reliable boiler that will
generate efcient heat and hot water
for years to come.
Warmth, efciency and
total peace of mind
* This estimated saving is based on changing from a older G (<70%)
rated boiler, and replacing this with a new A-rated condensing boiler.
Source: Energy Saving Trust. www.est.org.uk
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We’re behind you all the way
Once your new boiler has been installed, you can
look forward to many years of heating and hot water
comfort. With nationwide coverage our award-winning
customer service division, heateam, will be on hand
throughout the lifetime of your boiler to ensure it is
running at maximum efciency and saving you money
year on year.
Technical specications and clearances
Class leading hot water ow rates for increased
comfort and convenience
User friendly controls with clear, easy to read
display
A wide range of outputs to suit all heating and hot
water requirements
Seven year parts and labour warranty for added
peace of mind
Energy Saving Trust Recommended product
Support from our service division heateam
Why choose the Baxi Duo-tec Combi HE A
Duo-tec Combi 24
HE A
Duo-tec Combi 28
HE A
Duo-tec Combi 33
HE A
Duo-tec Combi 40
HE A
Performance
Heat Output Central Heating (CH) kW (Max) 20 24 28 32
(70oC Mean) kW (Min) 6.8 8.7 9.4 9.6
Heat Output Domestic Hot Water (DHW) Output - kW (Max) 24 28 33 40
Maximum DHW Flow Rate (Delta T @ 35oMax) l/min 9.8 11.5 13.5 16
Minimum DHW Flow Rate Required* l/min 2 2 2 2
Minimum Operating DHW Pressure Required bar 0.15 0.15 0.15 0.15
SEDBUK 2005 Seasonal Efciency NG / LPG % 91.1 / 93.2 91.1 / 93.2 91.1 / 93.2 91.1 / 93.2
Mechanical &Hydraulic Connections
CH Flow / Return / Gas (mm) 22 22 22 22
DHW Flow / Inlet / PRV (mm) 15 15 15 15
*Where low ow taps are used, it is strongly recommended that the domestic hot water ow rate does not fall below 2.5 l/min for reliable operation
*The 3degreefallbackonconcentricflues can
be reducedto1.5 degreesproviding theflue
system is adequately clampedinaccordance
withthe installation instructions.
780mm
270mm
200mm Min
5mm Min 5mm Min
450mm
180mm
450mm Min
ForServicing
Purposes
5mm Min
In Operation
3°*
(1 in 20)
345mm
150mm Min
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