Britony Combi 80 - System Guidance; System Pressure and Type; Flushing, Treatment, and Controls

The boiler is suitable for sealed systems only. The maximum
working pressure for the appliance is 10 bar. All fittings and
pipework connected to the appliance should be of the same
standard. If there is a possibility of the incoming mains
pressure exceeding 10 bar, particularly at night, then a
suitable pressure limiting valve must be fitted.
The boiler is designed to provide hot water on demand to
multiple outlets within the property. If there is a requirement
for greater demands, for example if the property has several
bathrooms and cloakrooms, a vented or unvented hot water
storage system may be used.
Showers
Any shower valves used with the appliance should be of a
thermostatic or pressure balanced type. Refer to the shower
manufacturer for performance guidance and suitability.
guidance. For more information on the use of corrosion
inhibitors, flushing and descaling agents, advice can be
sought from the manufacturers of water treatment products
such as:
Betz Dearbon Ltd
Foundry Lane
Widnes
Cheshire
WA8 8UD
Tel: 0151 424 5351
Fernox Manufacturing
Britannica Works
Clavering
Essex
CBll 4QZ
Tel: 01799 550811
System Controls
Flushing and Water Treatment
The performance of the appliance could be impaired by
system debris or the effects of corrosion. The system must be
flushed thoroughly to remove metal filings, solder, machining
oils and other fluxes and greases before connecting the
boiler. If it is an existing system, an appropriate flushing and
descaling agent should be used. Refer to BS 7593 (1992) for
The boiler is electrically controlled and is suitable for most
modern electronic time and temperature controls. The
addition of such external controls can be beneficial to the
efficient operation of the system. The boiler connections for
external controls are 24V and so only controls of 24V or that
have voltage free contacts should be used.