ROC COMBI HE 2802 - Gas Supply; Power Supply; Water Supply

15
Condensing boilers have a tendency to form a
plume of water vapour from the ue terminal
due to the low temperature of the ue gasses.
The terminal should therefore be located with
due regard for damage or discolouration that
may occur to building within the vicinity and
consideration must also be given to adjacent
boundaries, openable windows should also
be taken into consideration when sighting the
ue.
It may be necessary to protect the terminal
with a guard, if this is the case it will be
necessary to purchase a stainless steel
terminal guard. Reference should be made to
the building Regulations for guidance.
Ventilation
The room in which the boiler is installed does
not require specific ventilation. If the boiler
is installed in a cupboard or compartment
ventilation is not required for cooling
purposes.
Gas supply
The gas installation and tightness testing must
be in accordance with IGE/UP/1B. Ensure that
the pipe size is adequate for demand including
other gas appliances on the same supply.
Power supply
The gas boiler requires 230V-50Hz supply in
accordance with IEE regulations, and must
also allow the appliance to be electrically
isolation. The connection should be via 3 amp
double pole fuse isolating switch, and the
contacts separated by at least 3 mm on both
poles. Alternatively a fused 3 amp, 3 pin plug
and unswitched socket may be used, provided
it is not used in a room containing a bath or
shower, it. It should only supply the gas boiler.
Water supply
The boiler is suitable for sealed systems
only. The maximum working pressure for the
appliance is 6 bar. All ttings and pipework for
the appliance should be of the same standard.
If there is a possibility of the incoming mains
pressure exceeding 6 bar, particularly at night,
then a suitable pressure limiting valve must be
tted.
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 house has several
bathrooms and cloakrooms, a vented or
unvented hot water storage system may be
used.