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 efciency and saving you money
year on year.
Technical specications 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
(70
o
C 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 @ 35
o
Max) 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 Efciency 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 3degreefallbackon concentricflues 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
042074_Baxi_A4 Dou-tec Combi_2pp Leaflet.indd 2 28/01/2013 12:24
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