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Ancillary pipework not forming part of the useful heating
surface should be lagged to prevent heat loss and any
possible freezing - particularly where pipes run through roof
spaces or ventilated underfloor spaces.
Draining taps should be at least 1/2" BSP nominal size and be
in accordance with BS 2879.
Maximum recommended system hydraulic losses are given in
within Frame 4.
WATER TREATMENT
The SEC FF has an aluminium heat exchanger. If water
treatment is used Henrad recommend only the of Fernox-
Copal or Sentinel X100 water treatment products, which must
be used in accordance with the manufacturers' instructions.
For further information contact either:
Fernox Manufacturing Co. Ltd
Tandem House
Marlowe Way
Croydon
Surrey. CRO 4XS
Tel: 0870 5601 5000
or
Betz Dearborn Ltd.
Widnes
Cheshire
Tel. 0151 424 5351
IMPORTANT.
The application of any other treatment to this product may
render the guarantee of Caradon Plumbing Limited invalid.
2
BOILER WATER CONNECTIONS
The CH flow and return pipe and DHW inlet and outlet pipe connections are located at the bottom of the boiler.
8
GENERAL
Notes.
1.
It is most important that the correct concentration of the
water treatment product is maintained in accordance with
the manufacturers' instruction.
2.
If the boiler is installed in an existing system any
unsuitable additives must be removed by thorough
cleansing. BS. 7593:1992 details the steps necessary to
clean a domestic central heating system.
3.
In hard water areas treatment to prevent lime scale may be
necessary. However, the use of artificially softened water is
not permitted.
4.
Under no circumstances should the boiler be fired before
the system has been thoroughly flushed.
THERMOSTATIC RADIATOR VALVES (TRV)
Caradon Plumbing Limited recommend that heating systems
utilising full thermostatic radiator valve control of temperature
in individual rooms should also be fitted with a room
thermostat controlling the temperature in a space served by
radiators not fitted with such a valve as stated in BS. 5449.
When thermostatic radiator valves are used, a bypass should
be fitted, ensuring it is at least 3m from the boiler. The bypass
should have at least 6m of flow and return pipe of a minimum
22mm diameter.
For further information refer to the 'Good Practice Guide 143' , a
publication of the Energy Efficiency Office, available from the
Building Research Establishment, Garston, Watford WD2 7JR.
Tel: 01923 664258.
Henrad SEC FF -
Installation
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