Cold Water Inlet Pipe
Hot Water Outlet Pipe
Dielectric Hose
Dielectric Hose
Mono-directional Security Valve
Pressure leakage hole
The Pressure Relief Valve may discharge water and it should be piped to a safe but visible drain point.
A tundish should be incorporated close to the appliance where any discharge will be visible nut not
hazardous. The pipe work should have a continuous fall to the drain and the diameter should not be
lower than the hole in the Pressure Relief valve.
When the water is being heated the water expands and it is possible that some water will drip (up to 3%
of the total volume each heating cycle). It is normal.
Electrical power supply.
Never connect to the electricity supply an empty water heater.
Ensure the power supply to the socket into which the appliance is plugged is in accordance with the
rating label on the heater.
This appliance must be earthed.
All models are supplied with an electrical interrupt cut-out. This will switch off the heater if, for any
reason, it overheats. Should the cut-out operate, disconnect the water heater from the electricity supply
and remove the cause for the overheating.
Commissioning.
IMPORTANT. Never connect to the electricity supply an empty water heater.
Turn on all the hot water system taps and thoroughly flush allowing water to flow until no air is present.
This will automatically vent the integral hot water store of any air.
Check there is no leakage in the installation.