Toshiba MMY-MAP0804 Series, Quick Reference

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Adding Refrigerant
03
After finishing vacuuming, exchange the vacuum pump with a refrigerant cylinder 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
Outdoor unit type MAP080 MAP100 MAP120 MAP140 MAP160
Charging amount (kg) 11.5
Table 1
Liquid pipe dia. (mm)
Additional refrigerant amount/1m liquid pipe (kg/m) 6.4
0.025
9.5
0.055
12.7
0.105
15.9
0.160
19.1
0.250
22.2
0.350
Table 2
Standard type
High Efficiency type
Combined HP
(HP)
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
42
44
46
48
16
24
26
28
30
32
34
36
38
40
42
44
46
48
Combined outdoor units
(HP)
8HP — — —
10HP — — —
12HP — — —
14HP — — —
16HP — — —
10HP 8HP — —
10HP 10HP — —
12HP 10HP — —
12HP 12HP — —
16HP 10HP — —
16HP 12HP — —
16HP 14HP — —
16HP 16HP — —
12HP 12HP 10HP —
12HP 12HP 12HP —
16HP 12HP 10HP —
16HP 12HP 12HP —
16HP 14HP 12HP —
16HP 16HP 12HP —
16HP 16HP 14HP —
16HP 16HP 16HP —
8HP 8HP — —
8HP 8HP 8HP —
10HP 8HP 8HP —
10HP 10HP 8HP —
10HP 10HP 10HP —
8HP 8HP 8HP 8HP
10HP 8HP 8HP 8HP
10HP 10HP 8HP 8HP
10HP 10HP 10HP 8HP
10HP 10HP 10HP 10HP
12HP 10HP 10HP 10HP
12HP 12HP 10HP 10HP
12HP 12HP 12HP 10HP
12HP 12HP 12HP 12HP
C (Corrective amount
of refrigerant) (kg)
1.5
2.5
3.5
8.5
10.5
0.0
3.0
5.0
7.5
8.5
9.5
11.5
12.5
3.0
4.0
6.0
7.0
8.0
10.0
12.0
14.0
0.0
-4.0
-4.0
-2.0
0.0
-6.0
-6.0
-6.0
-6.0
-5.0
-4.0
-2.0
0.0
2.0
Additional re frigerant
Additional refrigerant charge Corrective amount of refrigerant depending
charge amount at local site = Real length of liquid pipe ×
amount per 1 m liquid pipe + on HP of cooperating outdoor units
(Table 1) (Table 2)
Charging of refrigerant
• Keeping the valve of the outdoor unit closed, be sure to charge the liquid refrigerant into the service port at the liquid side.
• If the specified amount of refrigerant cannot be charged, fully open the valves of the outdoor unit at liquid and gas sides, operate the
air conditioner in COOL mode, and then charge refrigerant into service port at the gas side.
In this time, choke the refrigerant slightly by operating the valve of the canister to charge liquid refrigerant.
• The liquid refrigerant may be charged suddenly, therefore be sure to charge refrigerant gradually.