11
it enters the wall. During the wrapping, the later circle should cover half of the
former one.
3) Fix the wrapped pipe on the wall with clamps.
CAUTION!
①
.
Do not wrap the pipe too tightly, otherwise the insulation effect would be
weakened. Additionally, make sure the drain hose is separated from the pipe.
②
.
After that, fill the hole on the wall with sealing material to prevent wind and rain
coming into the room.
2.4 Refrigerant Charging and Trial Running
(1) Refrigerant Charging
1) The refrigerant has been charged into the outdoor unit before shipment, while
additional refrigerant still need be charged into the refrigerant pipe during the
field installation.
2) Check if the liquid valve and the gas valve of the outdoor unit are closed fully.
3) As shown in the following figure (Fig.9), expel the gas inside the indoor unit
and refrigerant pipe out by the vacuum pump.
Fig. 9
4) When the compressor is not running, charge the R410A refrigerant into the
refrigerant pipe from the liquid valve of the outdoor unit (do not do it from the
gas valve).
(2) Calculation of the Additional Refrigerant Chargeing
1) Refrigerant Charge in the Outdoor Unit before Shipment
Table 6
Model
MS-E36AI
MS-E42AI
Refrigerant
Charge (kg)
4.3
4,8
