8
R
Figure 2
The heat pump must be protected from Reverse flow of water. If there is any chance
provide a check valve between the water tank and the cold water inlet.
Refrigerant Pipe Connections at the Heat Pump
1. Wrap up the thin and thick connecting pipes and a wire to length with insulated band.
2. Screw off the two/three way stop valve and the caps of insulated water tank inlet and
outlet.
3. Take off the plastic blockage of the connecting pipes, connect them with the heat pump
and water tank, and tighten it with wrench.
Note: The force should be moderate. Too much effort, it’s easier to damage the joint,
too small effort, the joint cannot be sealed.
4. Remove the spool and valve needle cap of two/three way stop valve, open the spool of
small valve to 1/2 circle with an Allen wrench. On
hearing the sound
of
gas
flow,
withstand the valve needle core of the refrigerant inlet for 3 secs, repeat 3 times until
you
feel the exhaust gas is cold.
5. Check the joints with soap water if leakage or not. Leakage cannot exist.
6. Open the two/three way stop valve completely with Allen wrench, and seal the cap.
7. The replenishment valve and stop valve may be required to be insulated, which depends
on the ambient temp at local, lest they freeze and burst in winter in use.
Plumbing installation requirements
1.
When water pressure exceeds
0.
6
Mpa
, please use reducing valve to reduce the water
pressure to
0.3Mpa
–
0.
6
Mpa
.
while
