Loading ...
Loading ...
Loading ...
Unvented hot water cylinder – SCxn…d/i, SCxn…sd/si
Page 12 of 28
ST0109 – C 05/09
WATER
Figure 6 – Cold water supply and discharge pipe work installation
5.4 Hot water outlet
The hot water pipe work is to be directly connected to the how water outlet connections
of the cylinder as indicated in Figures 1 and 2.
Should a thermostatic mixing valve be required the valve is to be installed following the
manufacturers instructions. When fitting the thermostatic mixing valve ensure that
none of the safety relevant devices of the unit can be isolated (see 5.3).
It is recommended to insulate the hot water pipe work from the cylinder to the outlets
to reduce the energy requirements for providing hot water.
5.5 Immersion heater
The immersion heater has to be connected in accordance with IEE Wiring Regulations
and the installer carrying out the work has to be suitably qualified. It must be con-
nected through a double pole isolating switch or suitable controller which must have a
contact separation of at least 3mm in all poles. The wiring diagram for the immersion
heater is shown in Figure 7. For further details please see instructions provided with
immersion heater.
The immersion heater incorporates an independent non-self resetting over temperature
cut-out. Should the over temperature cut-out operate, the rest pin will be pushed up-
wards, and become level or slightly proud of the cover at the position marked “Safety”.
Use a suitable sized implement to reset the pin by pushing it hard into its original posi-
tion.
Figure 7 – Wiring diagram immersion heater
Loading ...
Loading ...
Loading ...