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1.0 Introduction
© Baxi Heating UK Ltd 2011
1.1 Description
1. The Potterton Promax Combi HE Plus A is a fully automatic
gas fired wall mounted condensing combination boiler. It is
room sealed and fan assisted, and will serve central heating and
mains fed domestic hot water.
2. The boiler is set to give a maximum output of :-
24 models - 24 kW DHW
21 kW CH (Condensing)
28 models - 28 kW DHW
25.9 kW CH (Condensing)
33 models - 33 kW DHW
30.3 kW CH (Condensing)
3. It is designed for use on Natural Gas (G20).
4. The boiler is suitable for use only on fully pumped sealed
heating systems. Priority is given to domestic hot water.
5. The boiler data badge gives details of the model, serial
number and Gas Council number and is situated on the inner
door panel or the control box. It is visible when the case front
panel is removed (Fig. 1).
6. The boiler model name and serial number are also shown
on the information label on the back of the facia door. This is
for user reference.
7. The boiler is intended to be installed in residential /
commercial / light industrial E.M.C. environments on a
governed meter supply only.
8. The boiler must be installed with one of the purpose
designed flues such as the standard horizontal flue kit, part no.
5118489 .
9. All systems must be thoroughly flushed and treated with
inhibitor (see section 6.2).
Important: If the boiler is installed at a high point in the
system it is strongly recommended that Automatic Air
Vent Kit 720004701 is fitted.
1.2 Contents of Pack
1. Boiler Unit
2. Wall Plate (inc. taps)
3. Set of Pipes (inc. nuts)
4. Template & Quick Fit Guide
5. Literature Pack
Fig. 1
Control Box
Case Front Panel
Data Badge
Information Label
Facia Door