GENERAL NOTES WORCESTER BOSCH GREENSTAR HIGHFLOW 440
6 720 611 731a (08.04)
4
To get the best from your appliance please read
these instructions carefully
SEALED HEATING SYSTEMS
The appliance is fitted to a sealed heating
system which is pressurised. Your installer will
tell you of the minimum and maximum pressure
which must be indicated on the pressure
gauge.
Check regularly that the pressure is maintained
and contact your installer or maintenance
engineer if there is a permanent significant drop
in pressure. If the system loses pressure it
should be repressurised and the cause of the
fall investigated.
CENTRAL HEATING SYSTEMS
During the first few hours of operation of the
central heating system, check that all radiators
are being heated at an even rate. If the top of a
radiator is at a lower temperature than the
bottom then it should be vented by releasing air
through the venting screw at the top of the
radiator. Ask your installer to show you how this
is done. Repeated venting will reduce the
quantity of water in the system and this must be
replenished for safe and satisfactory operation
of the appliance.
Should water leaks be found in the system or
excessive venting is required then a service
engineer must be contacted to inspect the
installation and rectify any fault.
Only additives that are compatible with
aluminium may be used in the system. Any
incompatible additive used will invalidate the
guarantee.
FLUE OUTLET
This is a condensing appliance and the terminal
will, at times give out a plume of water vapour.
This is quite normal.
CONDENSATE DRAIN
The appliance also produces quantities of
condensate which is discharged regularly by a
pump within the boiler to drain.
ROOM THERMOSTAT
A room temperature controller (eg. Worcester
TR2 room temperature controller with night
setback module) should be fitted to control the
central heating. Refer to the instructions
supplied with the thermostat for information on
siting and setting.
THERMOSTATIC RADIATOR VALVES
It is recommended that this type of valve is
fitted to all but one of the radiators (or at least
those in the sleeping accommodations). The
remaining radiator, which must be where the
room thermostat is located, should be un-
controlled and must be left open. They should
conform to the requirements of BS2767:10.
SHOWERS, BIDETS, TAPS & MIXING VALVES
Standard hot and cold taps and mixing valves
must be suitable for operating at mains
pressure. Thermostatically controlled or
pressure equalising shower valves will guard
against the flow of water at too high a
temperature.
Hot and cold mains fed water can be supplied
directly to an over-rim flushing bidet subject to
local water company requirements.
With all mains fed systems the flow of water
from individual taps will vary with the number of
outlets operated simultaneously and the cold
water mains supply pressure to the property.
Flow balancing using “ball-o-fix” type valves is
recommended to avoid an excessive reduction
in flow to individual outlets.
For further information contact Worcester Heat
Systems Ltd. Technical Department.
GENERAL NOTES
INTRODUCTION
