Adding Refrigerant - Toshiba MMY-MAP0804HT8-E Service Manual

„ 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.
Heat pump
type
Cooling only
type
Additional refrigerant charge
amount at local site
Table 1
Liquid pipe dia. (mm)
Additional refrigerant amount/1m liquid
pipe (kg/m)
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Outdoor unit type
Charging amount (kg)
Outdoor unit type
Charging amount (kg)
=
Real length of liquid pipe
6.4
0.025
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MAP080 MAP100 MAP120
MAP080 MAP100 MAP120
10.5 10.5
Additional refrigerant charge
×
amount per 1m liquid pipe
(Table 1)
9.5 12.7
0.055 0.105
19
MAP140 MAP160
11.5
MAP140 MAP160
10.5 11.5 11.5
Corrective amount of refrigerant
depending on HP of co-
+
operating outdoor units
(Table 2)
15.9 19.1 22.2
0.160 0.250 0.350