13
CONTROLS.
As a minimum it is r
ecommended that a room
thermostat be installed to control the appliance. Thermostatic
radiator valves may be fitted to the system, however they
must not be fitted in the room where the room thermostat is fitted.
There must be at least one radiator installed with lock shield
valves that should not be closed. Further guidance can be
obtained from the Domestic Heating and Hot Water Guide to the
building regulations.
a)
W
iring external to the appliance must be in accordance with the
current I.E.E Wiring regulations (BS 7671) for electrical installation and
any local regulations, which apply.
b)
The mains cable must be at least 0.75 mm2 (24/0.2 mm) PVC
insulated to BS 6500 table 16.
3.8
ELECTRICITY SUPPLY
8
‘S’ PLAN INST
ALLATION
TIMED CH & DHW
FOR FURTHER INFORMATION PLEASE CONTACT HALSTEAD BOILERS LTD SERVICE HELPLINE TEL: 01926 834834
The Club HE 18 appliances may be used with any cer
tified mains
voltage room thermostat, as described in section 4. For further
information contact: Halstead Boilers Ltd, Service Helpline:
01926 834834.
3.9
EXTERNAL CONTROLS
c)
THIS APPLIANCE MUST BE EARTHED.
Failur
e to provide a
satisfactory earth connection will result in appliance malfunction.
d)
The method of connection to the mains supply must facilitate
complete electrical isolation of the appliance. Either a 3A fused three
pin plug and un-switched shuttered socket outlet, both complying with
BS 1363, or a 3A fused double pole switch having a 3 mm contact
separation in both poles and serving only the boiler (and its external
controls) may be used.