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8.3 Gas and Water Connections
8.3.1 General
a) CH flow
¾ʺ
(hot)
b) DHW outlet ½ ʺ (hot)
c) Gas inlet ¾ ʺ
d) DHW inlet ½ ʺ (cold)
e) CH return ¾ ʺ (cold)
Figure 18. Connections of Boiler
Isolating Valve set provided with boiler must be used for water and gas connections.
3 bar safety valve connection must be installed with copper pipe.
National and local requirements and legislations must be taken into consideration.
8.4 Electrical Connection
Electrical installation must be made according to the national and local instructions. The boiler must be
earthed and a standard 230 V AC
– 50 Hz supply is required.
CAUTION:
Disconnect power supply to prevent electrical shock before
connecting the electrical supply.
CAUTION:
If the supply cord is damaged, it must be replaced by the gas safe
engineer in order to avoid a hazard.
CAUTION:
The
≤ 3 A bipolar fuse (BS 1362) with a minimum contact opening of
3 mm must be used in the electrical connection of the boiler.
CAUTION:
The cable diameter (including insulation) of the electrical installation
to be installed must be at least 14 mm and the pipe diameter used must be at
least 16 mm.
a
b
c d e
