Correction Factor For Defrosting Operation; Fan Performance - Hitachi FSG1 Series Technical Catalogue

4.8. CORRECTION FACTOR FOR DEFROSTING OPERATION

The heating capacity, excludes the defrosting operation period.
When considering defrosting operation, the heating capacity should be corrected by the factor below.
Corrected Heating Capacity = Correction Factor x Heating Capacity
Outdoor Inlet Air Temp. (ºC DB)
(Humidity=85% RH)
Correction Factor 5 ~ 20 FSG
Correction Factor 24 / 30 FSG1
Correction Factor 8 / 10 FXG
Correction Factor 20 / 30 FXG1
?
NOTE:
The correction factor is not valid for special conditions
such as snowfall or operation in a transitional period.
Heating
Capacity

4.9. FAN PERFORMANCE

Air flow (m³/min)
-7 -5
0.96 0.94
0.95 0.93
Reduced Capacity
due to frost build up.
1 Cycle
RPI-0.8-1.0
CAPACITIES AND SELECTION DATA
-3 0 3
0.90 0.89 0.90
0.88 0.85 0.87
Time
Defrosting max. 10 min.
RPI-1.5
Air flow (m³/min)
4
/17
5 7
0.92 1.0
0.90 1.0