Kitano KC-Montaro II-60 [48/68] Cassette type air conditioners montaro ii series

Kitano KC-Montaro II-48 [48/68] Cassette type air conditioners montaro ii series
46
cassette type air conditioners, Montaro II series
D(mm)
L(m)
Φ6.4 Φ9.5 Φ12.7
Less than 5m
Over 5m 11 g/m 30 g/m 60 g/m
Special vacuum dry procedure (this vacuum dry method is used if there s moisture
when flushing the refrigerant pipe or rainwater may enter into the pipe):
1) Vacuum dry (for the first time)---connect the all-purpose detector to the inlet of
liquid pipe and gas pipe, and run the vacuum pump more than two hours (the vacuum
pump should be below -755mmHg).
2) Fill nitrogen to 0.5Kgf/cm
2
. Because nitrogen is for drying gas, it has vacuum
drying effect during vacuum destroy. But if the moisture is too much, this method can
t dry thoroughly. So, please pay more attention to prevent water entering and forming
condensation water.
3) Run the vacuum pump more than one hour (the vacuum pump should be below
-755mmHg). If the pump can’t achieve -755mmHg after pumping two hours, repeat
procedure 2 and 3.
4) Vacuum placement test: place 1 hour when it achieves -755mmHg, pass if the
vacuum watch shows no rising. If it rises, it shows there’s moisture or leakage point.
7.3.4. Additional refrigerant charge
Refrigerant cannot be charged until field wiring has been completed.
Refrigerant may only be charged after performing the leak test and the vacuum
pumping.
When charging a system, care shall be taken that its maximum permissible charge is
never exceeded, in view of the danger of liquid hammer.
Charging with an unsuitable substance may cause explosions and accidents, so
always ensure that the appropriate refrigerant is charged.
Always use protective gloves and protect your eyes when charging refrigerant.
The outdoor unit is factory charged with refrigerant. Calculate the added refrigerant
according to the diameter and the length of the liquid side pipe of the outdoor unit/
indoor unit.
Remark:
L (m): The length of the refrigerant pipe (one-way)
D (mm): Liquid side piping diameter
Table 7.3.4.

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