– 18 –
Adding refrigerant
After finishing vacuuming, exchange the vacuum pump with a refrigerant canister and start additional charging of
refrigerant.
Calculation of additional refrigerant charge amount
Refrigerant charge amount at shipment from the factory does not include the refrigerant for pipes at the local site.
For refrigerant to be charged in pipes at the local site, calculate the amount and charge it additionally.
NOTE
If the additional refrigerant amount indicates minus as the result of calculation, use the air conditioner without
additional refrigerant.
Table 1
Heat pump
type
Outdoor unit type MAP080 MAP100 MAP120 MAP140 MAP160
Charging amount (kg) 11.5
Cooling only
type
Outdoor unit type MAP080 MAP100 MAP120 MAP140 MAP160
Charging amount (kg) 10.5 10.5 10.5 11.5 11.5
Additional refrigerant charge
amount at local site
=
Real length of liquid pipe
×
Additional refrigerant charge
amount per 1m liquid pipe
(Table 1)
+
Corrective amount of refrigerant
depending on HP of co-
operating outdoor units
(Table 2)
2.221.919.517.215.94.6)mm( .aid epip diuqiL
Additional refrigerant amount/1m liquid
pipe (kg/m)
0.025 0.055 0.105 0.160 0.250 0.350
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