Mitsubishi Electric PLA-A·BA4 Technical Data Manual page 70

9-2-4. ADDITION OF REFRIGERANT
• Additional charging is not necessary if the pipe length does not exceed 30 m (100 ft).
• If the pipe length exceeds the specified length above, charge the unit with additional R410A refrigerant according to the
permitted pipe lengths in the chart below.
* When the unit is stopped, charge the unit with the additional refrigerant through the liquid stop valve after the pipe
extensions and indoor unit have been vacuumized.
* When the unit is operating, add refrigerant to the gas check valve using a safety charger. Do not add liquid refrigerant
directly to the check valve.
* After charging the unit with refrigerant, note the added refrigerant amount on the service label (attached to the unit).
• Be careful when installing multiple units. Connecting to an incorrect indoor unit can lead to abnormally high pressure and have
a serious effect on operation performance.
Max. pipe Max. height
Model
length difference
75 m 30 m
HA30,36
245 ft 100 ft
70
30 m 33 m 37 m 40 m 43 m
100 ft 110 ft 120 ft 130 ft 140 ft
0 oz 6 oz 12 oz 18 oz 24 oz
0 kg 0.2 kg 0.4 kg 0.5 kg 0.7 kg 0.9 kg 1.0 kg 1.2 kg 1.4 kg 1.5 kg 1.7 kg 1.9 kg 2.0 kg 2.2 kg 2.3 kg 2.4 kg
Additional refrigerant charging amount
46 m 49 m 52 m 55 m 58 m
150 ft 160 ft 170 ft 180 ft 190 ft
30 oz 36 oz 42 oz 48 oz 54 oz
61 m 64 m 67 m 70 m 73 m
200 ft 210 ft 220 ft 230 ft 240 ft
60 oz 66 oz 72 oz 78 oz 84 oz
75 m
245 ft
86 oz