Repressurising System - Potterton Promax HE Store Range User's Manual And Important Warranty Information
Condensing boilers with integrated hot
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Also See for Promax HE Store Range:
- Installation & servicing instructions manual (60 pages) ,
- Installation & servicing instructions manual (52 pages)
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Fig. 1
Fig. 2
6
2
bar
Normal Pressure
2
bar
Requires
Repressurising
Promax Store
RWC
Filling Loop
3.0 Repressurising System
3.1
Central Heating System Pressure
1. The normal operating water pressure is
between 1 and 2.5 bar (Fig. 1). If the pressure
exceeds 3 bar the safety pressure valve will
operate and a fault is indicated. Contact your
installer.
2. It may be necessary to repressurise the system
occasionally (Fig. 2). A filling device (the filling
loop) is fitted on the boiler itself.
3. The filling loop consists of two taps and a
separate metal braided hose pipe.
4. Only when repressurising should the hose be
connected between the two taps. No tools are
necessary for this, but ensure that the wing nuts
on the hose pipe ends are tightened onto the
taps.
5. Fully open one of the taps first, and then while
watching the pressure gauge, carefully open the
second tap.
6. When the needle on the gauge is indicating 1
or more, turn both taps off.
7. Disconnect the hose from the taps (a small
amount of water may be present) and remove it.
Keep the hose in a safe place for future use.
© Baxi Heating UK Ltd 2013
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Questions and answers
My boiler is not constantly supplying hot water
There are several possible reasons why your Potterton Promax HE Store Range boiler may not be supplying hot water consistently:
1. Programmer Settings: Ensure the programmer is set to 'DHW ON' during the required periods. If it's not, the boiler won't operate to heat the water.
2. Scaling in Hard Water Areas: If you live in a hard water area, limescale buildup may be affecting the heat exchanger and reducing hot water performance. A water treatment device, such as an ion-exchange water softener, may be needed.
3. Pressure Issues: If the boiler operates in a sealed primary system, ensure the system pressure is correct. Low pressure can affect performance.
4. Flow Restrictors: Using flow restrictors can help prolong hot water availability, especially in systems with smaller storage capacities.
5. Maintenance: The boiler may require servicing or cleaning if components like the heat exchanger are not functioning properly. Ensure the system has been maintained by a competent person as recommended.
6. Expansion Vessel Sizing: If the expansion vessel in the system is undersized or not operating correctly, it could impact performance.
If these steps do not resolve the issue, consulting a qualified service engineer is recommended.
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