Additional Refrigerant Charge - Mitsubishi Electric PURY-(E)P-YLM-A (-BS) Installation Manual

9-9. Additional refrigerant charge

Charge refrigerant in a liquid state.
- Charging refrigerant in the gaseous state will change the composition of the refrigerant and lead
to a performance drop.
Do not use a charging cylinder when charging refrigerant.
- The use of a charging cylinder may change the composition of the refrigerant and lead to a
performance drop.
The amount of refrigerant that is shown in the table below is factory-charged in the outdoor units. The amount
necessary for extended piping is not included and needs to be added on site.
Unit model Factory-charged amount [kg (oz)]
P200
P250
P300
P350
P400
P450
P500
The amount of refrigerant that is shown in the table below is the maximum amount to be added on site.
Unit model Maximum amount to be added [kg (oz)]
P200YLM
P250YLM
P300YLM
P350YLM
P400YLM
P400YSLM
P450YLM
P450YSLM
P500YLM
P500YSLM
P550YSLM
P600YSLM
P650YSLM
P700YSLM
P750YSLM
P800YSLM
P850YSLM
P900YSLM
Both refrigerant overcharge and undercharge will cause problems. Charge the system with the proper amount of
refrigerant.
Record the added refrigerant amount on the label attached to the control box panel for future servicing.
9-9-1. Calculation of the amount of additional refrigerant
・The amount of refrigerant to be added depends on the size and the total length of the high-pressure piping and
liquid piping.
・Calculate the amount of refrigerant to be charged according to the formula below.
・Round up the calculation result to the nearest 0.1 kg (0.1 oz).
・Refer to the HBC controller Installation Manual for the additional amount of refrigerant for a Hybrid City Multi
system.
・The refrigerant does not need to be added for the indoor units in a Hybrid City Multi system.
WT07282X01
9.5 (335)
9.5 (335)
10.3 (363)
10.3 (363)
10.3 (363)
11.8 (416)
11.8 (416)
27.5 (970)
33.5 (1182)
37.0 (1305)
39.0 (1376)
45.0 (1587)
52.0 (1834)
49.0 (1728)
52.0 (1834)
49.0 (1728)
52.0 (1834)
59.0 (2081)
62.5 (2205)
75.0 (2646)
79.5 (2804)
79.5 (2804)
79.5 (2804)
84.0 (2963)
89.0 (3139)
GB-35
Unit model Factory-charged amount [kg (oz)]
EP200
EP250
EP300
EP350
EP400
EP450
EP500
Unit model Maximum amount to be added [kg (oz)]
EP200YLM
EP250YLM 33.5 (1182)
EP300YLM 37.0 (1305)
EP350YLM 39.0 (1376)
EP400YLM 45.0 (1587)
EP450YLM 49.0 (1728)
EP500YLM 49.0 (1728)
EP500YSLM 52.0 (1834)
EP550YSLM 59.0 (2081)
EP600YSLM 62.5 (2205)
EP650YSLM 75.0 (2646)
EP700YSLM 79.5 (2804)
EP750YSLM 79.5 (2804)
EP800YSLM 79.5 (2804)
EP850YSLM 84.0 (2963)
EP900YSLM 89.0 (3139)
8.5 (299)
8.5 (299)
9.3 (328)
9.3 (328)
11.8 (416)
11.8 (416)
11.8 (416)
27.5 (970)