8
Plumbing connection
Do not alter the installation position or block the relief valve. Connect the safety valve provided with this
unit to the inlet of the water heater (inlet pipe has a blue cap). The arrow points to the direction of water
flow (to the heater). The storage heater must be permanently connected to the water mains and the use of a
hose set is prohibited. The safety valve must be connected to the discharge pipe, mounted downwards to a
floor drain in a frostless environment. As water may drip from the discharge pipe during operation of the
heater, a floor drain should be provided nearby. 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.
The hot water pipe is connected to the water outlet (outlet pipe has a red cap). 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. Nylon hoses should be used
for the connection between the tapping pipe and the heater.
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.
Water inlet and outlet connection
CAUTION:
•
Apply proper sealant to the pipe joints to prevent leakage. Do not over-tighten the safety valve to
avoid damage.
