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MIV V5 Heat Recovery DC Inverter R410A
DM14-01.01.18en
121
Installation
Procedure
Caution:
Don’t mix up the different refrigerants or abuse the tools and measurements which directly contact with refrigerants.
Don’t adopt refrigerant gas for air vacuuming.
If vacuum level could not get to -0.1MPa, please check whether resulted by leakage and confirm the leakage site. If no leakage,
please operate the vacuum pump again 1 or 2 hrs.
Respectively connect the vacuum pump in the gas balance valve and oil balance valve
Perform the pump (last for 10 minutes or above)
Close the pressure gauge and vacuum pump in turn
Open the gas balance valve and oil balance valve of the outdoor unit
Remove the pressure gauge and vacuum pump
After the system power outages, switch the code S5
.
After the system is powered on, press the key of SW4 until displaying -000.And then
press the key of forced cooling, then UA is displayed.
Connect with vacuum pump
Perform the pump (last for 2 hours or above)
When get the vacuum level -0.1MPa, the pump should keep running for 20-60 minutes
Shut down the vacuum pump
1. Close-off the valve of vacuum meter.
2. Cut off the connection between
pressure meter and vacuum pump.
3. Close the vacuum pump.
Place the vacuum state unused (1 hours
or above)
Into vacuum mode