Charge/Recovery Of Refrigerant; Refrigerant Charging - Samsung Electronics DVM Series Technical Manual

9. Charge/recovery of refrigerant

9-1. Refrigerant charging

(1) Outdoor unit is pre charged with refrigerant but additional refrigerant will be required.
(2) After completion of evacuation, use the following instructions to charge
the refrigerant into the service port.
1) Check whether the shut offs liquid and suction line are completely closed.
2) Fill the specified amount of refrigerant into liquid shut off valve service port
with the compressor stopped.
If the length of refrigerant piping is longer than specified, unit will require additional refrigerant.
Do not charge the refrigerant into the suction service port.
If the refrigerant charging is not done by the above method, press the refrigerant charging
button
charge the specified amount of refrigerant to the service port of suction valve. Check the
pressure table as per the outdoor temperature to charge the refrigerant.
R
22
scale
1) MUF-
Key 1
Pump down
1) RVMH(C)-
Press times
1
2
3
1) on outdoor unit PCB to operate the unit. After approximately 30 minutes,
Outdoor unit
suction shut off valve (service port)
liquid shut off valve (service port)
vacuum pump
Key 2
Refrigerant charge
Key 1
Heating refrigerant charge Cooling refrigerant charge
Heating test operation
When refrigerant is charged with cooling operation, the refrigerant charge through
port of the stop valve in gas pipe is possible, but refrigerant charge port separately
available should be used to input the refrigerant operation heating operation.
If the outdoor temperature is more than 59
and if the temperature is below that, it is better to charge in heating operation.
45
indoor unit
1 2
Key 3
Reset
Key 2 Key 3
Reset
Cooling test operation
Pump down
O F, it is better to charge in cooling operation,
8
Key 4
Test-operation
Key 4
View Mode