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2. Guideline for each installation process
2.9 Trial test run operation
2.9.1 Test run procedure
Check the following before turning power on
Wrong power wiring , loosed screws
Wrong control transmission wiring , loose screws
Piping size , presence of thermal insulation
Measurement of main power circuit insulation
Addition or refrigerant if required
Fully open respective stop valves on liquid, gas
Turn on outdoor unit power
2.9.2 Evaluation performance
Evaluation of the performance
Operate unit for 15~20 minutes, then check the system refrigerant charge:
① Measure the pressure of the gas side service valve.
② Measure the temperature of the intake and discharge of air.
③ Ensure the difference between the intake temperature and the discharge is more than 8°C
Discharge air
④ For reference, the gas side pressure of optimum condition is as below. (Cooling)
Outside ambient
Refrigerant
Temp.
R410A
35°C (95°F)
NOTE
: If the actual pressure is higher than shown, the system is most likely overcharged so extra refrigerant should be
removed.
If the actual pressure is lower than shown, the system is most likely undercharged so extra refrigerant should be added.
The air conditioner is now ready for use.
35 _
Heat pump 50Hz/R410A
Intake temperature
Discharge air
Discharge
temperature
The pressure of the gas side
Be sure to record the additional
quantity of refrigerant
Intake temperature
Discharge
temperature
service valve.
8.0~10.0kg/cm
2
G
Use a mega-tester
Intake temperature
Discharge air
Discharge
temperature
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