GENERAL NOTES
WORCESTER BOSCH GREENSTAR 24i/28i Junior
8 716 107 338b (11.05)
4
To get the best from your appliance please read
these instructions carefully.
SEALED HEATING SYSTEMS
This appliance is fitted to a sealed heating
system which is pre-pressurised. Your installer
will advise you of the minimum and maximum
pressure which should be indicated on the
pressure gauge.
Check regularly that the pressure is maintained
and contact your installer or maintenance
engineer if a permanent significant drop in
pressure is indicated on the pressure gauge. If
the system loses pressure it should be re-
pressurised 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.
This boiler is fitted to a sealed system; 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 if
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.
CONDENSATE DRAIN
This is a condensing appliance and the terminal
will, at times give out a plume of water vapour.
This is quite normal.
The appliance also produces quantities of
condensate which is discharged regularly by a
siphon within the boiler via a pipe to drain. This
pipe must not be blocked or altered in any way.
CLEARANCES - VENTILATED COMPARTMENT
Your installer will have provided adequate
space around the appliance for safety and
servicing access. Do not restrict this space with
the addition of cupboards, shelves etc. next to
the appliance.
GENERAL NOTES
ROOM THERMOSTAT
A room temperature controller and programmer
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 accommodation). The
remaining radiator, which must be where the
room thermostat is located, should be un-
controlled and must be left open. The
thermostatic radiator valves should conform to
the requirements of BS2767:10.
INTRODUC
TION
+ 30mm
above elbow
5mm
5mm
600mm
200mm
*600mm
(**25mm)
*600mm service clearance required to a fixed surface
(**25mm from removable door or panel)
