6
Installation & Owner‘s Manual
1)
2)
3)
4)
5)
WARNING
● Do not dismantle the P
T Valve.
● Do not block o
ff the drainage pipe.
It will cause explosion and injury, if do not comply with the
above instruction.
EXPLOSION
Installation of the One Way Valve: The spec of the One Way
Valve thread in accessories is RC3/4”. It is used to prevent water
from flowing backwards.
After water system piping work, turn on the cold water inlet valve
and hot water outlet valve and start effusing the tank. When
water flow smoothly out from water outlet pipe(tap water outlet),
the tank is full, turn off all valves and check pipeline to make sure
there is no any leakage.
If the inlet water pressure is less than 0.15MPa, a pump should
be installed at the water inlet.
For guarantee the safety usage of tank at the condition of water
supply pressure higher than 0.65MPa, a reducing valve should
be installed at the water inlet pipe.
Condensate may be leaked from unit if drainage pipe is blocked
or unit operates in high humidity environment, a drainage pan is
recommanded as shown as following figure:
Fig.3-2
50mm larger than
the dia. of unit
Max.22mm
Heat Pump
Water Heater
Water inlet or outlet pipes: The spec of the water inlet or outlet thread
is RC3/4” (external thread). Pipes must be heat-insulated well.
Installation of the pipe for PT valve: The spec of the valve
connecting thread is RC3/4” (internal thread). After installation, it
must be confirmed that the drainpipe outlet is exposed in the air.
CAUTION
Handle
Drainage
pipe
Piping water system as the above figure. In case of installing it at
a place where outside temperature below freezing point,
insulation must be provided for all hydraulic components.
The handle of PT Valve should be pulled out once per half a year
to make sure that there is no jam of the valve.
Please beware of burn, beware of the hot
water from the valve.
The drainage pipe should be well insulated
in order to prevent water inside pipe from
freezing in cold weather.
Fig 3-1.C: HWHM-TNF190/1.5-H31
Note:
Water temperature limiting valve
is recommended for mixing the
inlet cold water with outlet hot
water to prevent burns caused
by hot water
W ater Outlet
User
water Inlet
Drain port
Tap
Water in
Shut off
Valve
Shut off
Valve
One Way
Valve
Barrel-drain
expansion tank for pressure
relief(recommended)
PT Valve
Upper
Condensate Outlet
Lower
Condensate Outlet
Water Temperature
Limiting Valve