General Information - Worcester Greenstar Camray External 12/18 User Instructions

Read these instructions carefully to get the best
from your appliance.
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 in sealed
systems will reduce the quantity of water in the
system and this must be replenished for safe
and satisfactory operation of the appliance.
When excessive venting or water leaks are found
in the system you must contact a service
engineer to inspect the installation and rectify
any fault.
Only use additives compatible with the appliance
and system. Use of incompatible additives can
cause damage and will invalidate the appliance
guarantee.
Sealed heating systems:
Where the appliance is fitted to a sealed heating
system your installer will inform you of the
minimum and maximum pressure which must be
indicated on the pressure gauge.
Regularly check the pressure is maintained and
contact your installer or maintenance engineer if
there is a noticeable, permanent drop in
pressure. If the system loses pressure it should
be repressurised and the cause of the loss
investigated.
FILLING LOOP: Sealed systems only
Should the sealed system pressure within your
system have dropped to below 0.5 bar (shown
on the pressure gauge) you will need to increase
this to ensure your boiler continues to run
without problems.
Your installer should have informed you where
to find the filling system and instructed you in
its use.
Should this have been overlooked you can
increase the pressure by following these
instructions:
1. The boilers integral pressure gauge should be
visible from the filling link.
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GENERAL INFORMATION

GENERAL INFORMATION
2. Connect the flexible hose across the two
valves, one leading from the boiler and the other
from the mains supply. The connecting nuts need
only to be hand tight.
3. Slowly open both valves ensuring that water
does not leak from either end of the flexible
hose.
4. You will start to hear water passing across the
hose and valves and the grey needle on the
pressure guage will rise.
5. When the needle rises between 1 and 1.5 bar
close both valves, the needle should now remain
fixed.
6. The hose should then be disconnected from
at least one valve, a small amount of water will
emit from the hose, this is normal. If water
continues to issue from the hose the valve has
not been fully closed or is passing. If it is
passing you will need to contact your installer to
resolve the problem.
A filling loop is a set of manually operated valves
and a flexible pipe that allow water to be added
to the system when the valves are opened. This
device must be WRAS approved. To comply with
local water authority by-laws the flexible pipe
should only be connected when topping up the
system and disconnected when not in use.
CONDENSATE:
This is a high efficiency appliance using
condensing technology which will under normal
operation produce a regular discharge of
condensate to drain and at times, give out a
plume of water vapour from the flue terminal.
ROOM THERMOSTAT:
A room thermostat must be fitted to control the
central heating. Refer to instructions supplied
with the room 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.
GREENSTAR CAMRAY EXTERNAL 12/18 - 18/25 - 25/32
8 716 112 711b (09.07)