R.C. = Standard rating condition : Indoor 27°C DB / 19.5°C WB
Outdoor 35°C DB / 24°C WB
12 - Technical Appendix
Unit Capacity
Total cooling capacity can be detemined by using correction
factors C1, C2 and C3.
Given cooling capacity = Cooling capacity at standard
rating conditions x C1 x C2 x C3.
C1 = Capacity correction factor for tempetature
C2 = Capacity correction for piping length
C3 = Capacity correction for indoor unit fan speed
Capacity correction factor for temperature
Capacity correction factor for indoor fan speed (C3)
Fan speed
Correction factor C3
Indoor unit
High
1
Medium
0.90
Low
0.75
Indoor unit
10
0.98
5
1.00
Piping length (m)
Correction factor C2
Capacity correction factor for piping length (C2)
Operating temperature limits
Cooling mode
Heating mode
Maximum
+ 28°C
(heat pump mode)
+ 46°C
Minimum
+ 19°C
(-5 with low ambiant kit)
- 8°C
Inlet air wet bulb temperature,indoor unit (CWB)
10
15
20
25
30
35
20
25
30
35
40
Air intake dry bulb temperature, outdoor unit (CDB)
Capacity correction factor C1
Operating temperature range
110 %
100 %
90 %
85 %
120 %
R.C.
45
10
