MAINTENACE 01160
GMV5 COMPACT MULTI VRF UNIT
SERVICE MANUAL
b3. Confirm that the gas valve and liquid valve for outdoor unit is at off status;
b4. -charging tank and then charge
refrigerant from gas pipe and liquid pipe at the same time.
b5. Obeserve the data weightometer, close the valve after it is reached to requirement and then close the valve for
liquid-charging tank;
b6.
detection joint of cooling gas pipe or detection joint of gas vavle.
c. Notice for filling refrigerant
c1. Calculate the section and length of cooling liquid pipe preciously for the precision refrigerant-charing
volume.
c2. Measure the additional refrigerant volume preciously;
c3. R410AInvert to charge the R410A for ensuting the liquid-charging;
c4. When the temperature is low, heat the liquid-storage tank with hot water or hot wind for helping
refrigerant-charging. However, prohibit use flame to heat the liquid-storage tank directly. Otherwise, it may cuase
personal injury or property damage due to explosion
5.5 Connection Pipe Size
If L≥90m and H≥15m, then :
Equivalent length L，Height difference between outdoor and indoor unit: H
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