gledhill benchmark BoilerMate A-Class OV Series Design, Installation And Servicing Instructions page 16

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1.0 DESIGN
1.3 SYSTEM DETAILS
Heating System
Connection of Bathroom Radiator/
Towel-Rail for Summer use
If a pumped circuit is required for the bathroom
radiator/towel rail, the flow pipework can be
teed anywhere into the primary flow between
the boiler and the BoilerMate. The return
pipework can be connected into the 15mm
copper blanked connection provided adjacent
to the boiler pump. We recommend any
radiators/towel rails on this circuit are provided
with T.R.V.'s and that the total heat output of the
radiators/towel rails is not more than the figure
quoted in the table on page 5.
The radiators will only get hot when the
boiler is firing.
It is important that the flow rates through these
radiators is adjusted to the minimum required
at the lockshield valves on the radiators. If this
is not done the performance of the BoilerMate
will be adversely affected.
The height of the water level in the F & E cistern
must provide the minimum head required by
the boiler and must be at least 250mm higher
than the highest point of the system.
Alternatively, if full time control is required
of the Summer/Towel rail circuits these can
be piped as a separate zone from the main
heating circuit with their own zone valve and
programmable room thermostat as shown
in Section 2.2 Installation, Zoned Heating
Systems.
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