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Worcester-Bosch Greenstar HE Combi Manual

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9
General notes
6 720 610 577 GB (04.05)
For further information contact Worcester Heat Systems Ltd.
Technical Services Department.
Hot and cold flow – R 25 & 30 Boilers
The flow of water demanded from both hot and cold service out-
lets is dependent upon the mains supply. It may not be possible
in some installations to operate all outlets simultaneously.
Water mains failure – R 25 & 30 Boilers
If there is a failure of the mains water supply then no water will be
available at a tap or shower until the mains supply is restored. The
appliance will still operate in the central heating mode.
Use in hard water areas – R 25 & 30 Boilers
In exceptionally hard water areas a device to prevent scale forma-
tion may be fitted. Installation of a scale inhibitor assembly should
be in accordance with the requirements of the local water com-
pany. An isolating valve should be fitted to allow for servicing.
Alternatively the maximum temperature of the domestic hot water
may be reset to about 45 °C which will reduce the risk of scale
formation in these hard water areas.
Ventilation
This is a room sealed appliance and does not require any air for
combustion from inside the house. If the appliance is fitted into a
cupboard or a compartment is built around the appliance after
installation then the compartment must be separated from the
boiler space by a perforated non-combustible partition as
described in BS6798.
Notwithstanding the requirements of BS6798, there is no need
for ventilation openings to be provided in the compartment
because of the low heat loss from the casing.
Do not allow the flue terminal fitted on the outside wall to become
obstructed or damaged.
Pump
The pump will have been set by the manufacturer and must not be
manually re-adjusted.
… 9 …


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