haier S125ENF - Manual (Page 10)

8
Installation instructions
·
Operation instructions
y Connection method of water supply pipeline in the houses where a solar water heat
coexists with another type of water heater
y Operation methods:
1. Before using hot water, valves K1, K2 and K3 must be in closed state;
2. To fill water, open valve K1. When water flows out from the overflow pipe, it indicates the water tank is full.
At this time, close valve K1.
3. To use hot water, open valve K2. Hot water will come out from the shower nozzle. If it is too hot, open valve
K3 to adjust the water temperature.
4. Close valves K2 and K3 after use.
To the tank of the solar water heater
Another type of
water heater
When a solar water heat coexists
with another type of water heater,
check valves must be installed on
both cold and hot water pipes to
avoid damage caused by reverse
water flow from tank of another
heater, which has higher pressure,
to that of the solar heater.
Tap water
Solar water heater
Vent
Overflow
Water inlet and outlet
Tap water
Check
valve