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1.0 Introduction
© Baxi Heating UK Ltd 2016
1.1 Description
1. The Potterton Promax Combi 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 Pnc (Condensing)
28 models - 28 kW DHW
25.9 kW CH Pnc (Condensing)
33 models - 33 kW DHW
30.3 kW CH Pnc (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 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 / domestic
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 Optional Extras
Integral timers, RF room thermostats etc. are available as
optional extras.
1.3 Contents of Pack
The pack contains:-
• Boiler
• Wall Plate (including taps)
• Set of Pipe Connections
• Template & ‘Quick Fit’ Guide
• Literature Pack
• Filling Loop
Fig. 1
Control Box
Case Front Panel
Data Badge
Information Label
Facia Door
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