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Water Inlet and Outlet Connection
Plumbing Connection
The heater comes with a relief valve. Connect the valve to the inlet (marked in blue). The arrow on
the valve should be in line with the direction of the water flow. The storage heater must be
permanently connected to the water mains and the use of a hose set is prohibited. The hot water pipe
is connected to the water outlet (marked in red).
The safety valve must be connected to a PVC discharge tube, mounted downwards to a nearby floor
drainage in a frostless environment. The pipes should not be blocked. The relief valve is to be
operated regularly to remove lime deposits and to verify that it is not blocked. If the water pressure
of the inlet pipe approaches or exceeds the relief limit (0.80 MPa) of the safety valve, the valve will
relieve pressure automatically. Refer to the following diagram for the pipe connection.
We recommend the use of a double check valve assembly for the installation of the water heaters.
The double check valve assembly is a safe and effective measure for preventing backflow and back-
siphonage of water from the water heaters through the inlet pipe.
CAUTION:
• Apply proper sealant to the pipe joints to prevent leakage. Do not over-tighten the safety valve
to avoid damage.
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