Design and Technical Manual

2. MODEL SELECTION
COMPENSATION COEFFICIENT OF FROSTING / 5-2.
DEFROSTING
(HEATING OPERATION)
To take the effects of accumulated frost and defrosting operation on heating capacity into
consideration, the capacity of outdoor units should be corrected by compensation coefcient
shown in the table below.
Actual heating capacity = The value of capacity table x Capacity change rate by frosting
CAPACITY CHANGE RATE BY FROSTING

Outdoor temperature
°FDB /
°FWB
5.0 / 3.0 23.0 / 19.0 32.0 / 28.0 35.6 / 33.8 41.0 / 37.0 47.0 / 43.0
°CDB /
°CWB
-15.0 / -16.1 -5.0 / -7.2 0.0 / -2.2 2.0 / 1.0 5.0 / 2.8 8.3 / 6.1
Capacity change rate by
frosting
% 90.4 88.8 80.0 82.0 90.0 100
- (02 - 19) -
MODEL SELECTION MODEL SELECTION