Additional Refrigerant Charge Amount; Charging Of Refrigerant - Toshiba SMMS-e Quick Reference

Refrigerant Piping
For T8P,T7P model
Refrigerant amount
Cooling only model
charged in factory
When the system is charged with refrigerant at the factory, the amount of refrigerant needed for the pipes at the site
is not included. Therefore, calculate the additional amount needed and add the required amount to the system.
(Calculation)

Additional refrigerant charge amount

MMY-MAP***6T8P-E
Additional refrigerant charge amount at site = [1] + [2] + [3]
[1]. Compensation by system HP (Table 1)
[2]. Additional refrigerant charge amount Indoor unit (Table 2)
[3]. (Real length of liquid pipe × Additional refrigerant charge amount per liquid pipe 1 m (Table 3) ) × 1.2
Table 1
Space saving model
System Combination
HP HP
8 8
10 10
12 12
14 14
16 16
1 18
20 20
22 22
24 12 12
26 14 12
28 16 12
30 16 14
32 16 16
34 18 16
36 20 16
38 22 16
40 20 20
42 22 20
44 22 22
46 16 16 14
48 16 16 16
50 18 16 16
52 20 16 16
54 22 16 16
56 20 20 16
58 22 20 16
60 22 22 16
Table 2 (For HT8P-E, T8P-E model)
Additional refrigerant charge amount Indoor unit
Additional refrigerant charge amount
Table 3 (For HT8P, HT7P, T8P, T7P model)
Pipe dia. at liquid side
Additional refrigerant amount/1m

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
0806 1006 1206
10.5kg 10.5kg 10.5kg 10.5kg 11.5kg 11.5kg 11.5kg 11.5kg 11.5kg
Charged Compensation
refrigerant by System
HP
kg kg
10.5 -3.5
10.5 -3.5
10.5 -1.5
11.5 -1.0
11.5 -0.5
11.5 1.5
11.5 1.5
11.5 1.5
21 -3.0
22 -2.5
22 -2.0
23 - 1.5
23 - 1.0
23 1.0
23 1.0
23 1.0
23 3.0
23 3.0
23 3.0
34.5 -6.5
34.5 -6.5
34.5 -0.5
34.5 -0.5
34.5 -0.5
34.5 2.5
34.5 2.5
34.5 2.5
Standard Indoor
unit
kg/HP 0.4
mm 6.4
Ø
kg/m 0.025
<Cooling,Heat pump type>
14B6 1406 1606 18B6
High efficiency / High Diversity model
System Combination
HP HP
20 10 10
22 12 10
36 12 12 12
14 12 12
38
40 14 14 12
42 14 14 14
16 14 14
44
54 20 20 14
Note : 14HP* = MMY-MAP1406T8P , MMY-MAP1406T7P
18HP* = MMY-MAP1806T8P , MMY-MAP1806T7P
Air to Air Heat
Fresh Air Intake
exchanger with
I ndoor Unit
DX-coil
0.2
9.5 12.7 15.9
Ø Ø Ø
0.055 0.105 0.160
1806 2006 2206
11.5kg
Charged
Compensation
refrigerant by System
HP
kg kg
21 -7.0
21 -7.0
31.5 -12.5
32.5 -10.5
33.5 -8.5
34.5 -4.5
34.5 -4.5
34.5 1.5
Hot water
Module
0 .2 0
19.0 22.2
Ø Ø
0.250 0.350
3