General Notes - Bosch External System 12/18 Users Instructions And Customer Care Manual

General information
5.3

General notes

To get the best from your boiler, read these instructions
carefully.
Central heating system
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 boiler.
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 boiler and system. Use
of incompatible additives can cause damage and will invalidate
the boiler guarantee.
Condensate drain
This is a condensing boiler and the terminal will, at times give
out a plume of water vapour. This is quite normal.
The boiler also produces quantities of condensate which is
discharged regularly via a pipe to drain.
This pipe must not be blocked or altered in any way.
Clearances, see section 5.2
Your installer will have provided adequate space around the
boiler for safety and servicing access.
Do not restrict this space with the addition of cupboards,
shelves etc. next to the boiler.
Room thermostat
A room temperature controller must be fitted to control the
central heating. Refer to 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.
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