Toshiba MMY-MAP0804HT8-E Installation Manual page 17

SMMS-i
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.
Outdoor unit type
Heat pump
type
Charging amount (kg)
Outdoor unit type
Cooling only
type
Charging amount (kg)
Additional refrigerant charge
=
Real length of liquid pipe
amount at local site
Table 1
Liquid pipe dia. (mm) 6.4
Additional refrigerant amount/1m liquid
0.025
pipe (kg/m)
31-EN
Installation Manual
MAP080 MAP100 MAP120 MAP140
11.5
MAP080 MAP100 MAP120 MAP140
10.5 10.5 10.5 11.5
Corrective amount of refrigerant
Additional refrigerant charge
depending on HP of co-
× +
amount per 1m liquid pipe
operating outdoor units
(Table 1)
(Table 2)
9.5 12.7 15.9 19.1
0.055 0.105 0.160 0.250
SMMS-i
Table 2
Combined HP (HP)
MAP160
Standard type
MAP160
11.5
22.2
0.350
High Efficiency type
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.
– 16 –
Combined outdoor units (HP)
8 8HP – –
10 10HP – –
12 12HP – –
14 14HP – –
16 16HP – –
18 10HP 8HP –
20 10HP 10HP –
22 12HP 10HP –
24 12HP 12HP –
26 16HP 10HP –
28 16HP 12HP –
30 16HP 14HP –
32 16HP 16HP –
34 12HP 12HP 10HP
36 12HP 12HP 12HP
38 16HP 12HP 10HP
40 16HP 12HP 12HP
42 16HP 14HP 12HP
44 16HP 16HP 12HP
46 16HP 16HP 14HP
48 16HP 16HP 16HP
16 8HP 8HP –
24 8HP 8HP 8HP
26 10HP 8HP 8HP
28 10HP 10HP 8HP
30 10HP 10HP 10HP
32 8HP 8HP 8HP
34 10HP 8HP 8HP
36 10HP 10HP 8HP
38 10HP 10HP 10HP
40 10HP 10HP 10HP
42 12HP 10HP 10HP
44 12HP 12HP 10HP
46 12HP 12HP 12HP
48 12HP 12HP 12HP
Installation Manual
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
8HP -6.0
8HP -6.0
8HP -6.0
8HP -6.0
10HP -5.0
10HP -4.0
10HP -2.0
10HP 0.0
12HP 2.0
EN
32-EN