Measure For Gas Shortage - Daikin VRV Plus Series General Information Manual

Si33-003.book Page 184 Monday, June 25, 2001 9:06 AM
Measures to Take in the Case of Gas Leaks
9.2

Measure for Gas Shortage

To correct problems caused by a gas shortage, it is necessary to repair leaks and replace all refrigerant.
In the case of urgency, additional refrigerant charge is acceptable. However, if the problem is corrected by
an additional refirigerant charge, a slight capacity decrease may result due to the refrigerant composition
change.
(Capacity change caused by refrigerant leaks)
When 50% of the total refrigerant capacity is added and the capacity decreases from 100% (original
condition) to 95%, the pressure (under the same temperature condition) and the degree of superheat in the
comperessor tend to drop very slightly. However, in actual products, the rates of decrease vary depending
on the control function of individual models.
184
If R-407C refrigerant is added in the exact amount as leaked refrigerant, the air conditioner's capacity
changes as shown below.
(Example) When 50% of refrigerant leaks, the capacity decreases approximately 5%.
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New Refrigerant R-407C
SiE33-003