14
and without any air. Also make sure there is good insulation for the water
pipe.
(3) Check the electrical wiring. Make sure that the power voltage is normal,
the screws are fastened, the wiring is made in line with the diagram, and
the earthing is connected.
(4) Check the heat pump unit including all of the screws and parts of the heat
pump to see if they are in good order. When the power is on, review the
indicator on the controller to see if there is any failure indication. The gas
gauge can be connected to the check valves to see the high pressure (or
low pressure) of the system during trial running.
6.10.2. Trial running
(1) Start the heat pump by press " " key on the controller. Check
whether the water pump is running, if it runs normally there will be 0.2
MPa on the water pressure meter.
(2) When the water pump runs for 1 minutes, the compressor will start.
Hear whether there is strange sound from the compressor. If abnormal
sound occurs please stop the unit and check the compressor. If the
compressor runs well please look for the pressure meter of the
refrigerant.
(3) Then check whether the power input and running current is in line with
the manual. If not please stop and check.
(4) Adjust the valves on the water loop, to make sure that the hot(cool)
water supply to each door is good and meet the requirement of heating
(or cooling). Review whether the outlet water temperature is stable.
(5)
The parameters of the controller are set by the factory, it is not allowed
to change then by the user himself.
If the water flow rate is lower than 70% of the rated water flow, the
defrosting efficiency will be lower. The suggested water flow rate shall be
the rated flow rate which is shown on the nameplate.
Summary of Contents for R290 Series
Page 1: ...INSTALLATIONMANUAL AIR TO WATER HEAT PUMP SERIES R290...
Page 2: ...MODEL KHX 14PY3 KHX 16PY3 Air to Water Heat Pump Installation Manual...
Page 9: ...6 4 Unit Dimension mm 4 1 Models KHX 14PY3...
Page 23: ...9 1 Model KHX 14PY3 9 Wiring Diagram 20...
Page 24: ...21 9 2 Model KHX 16PY3...
Page 38: ...35 V202109HH01...
Page 39: ...NOTE...
Page 40: ...kaisai com 20220425 0003...
