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AIR BLOWER
YORK Technical Guide Code 035T76009-000
12 - TECHNICAL APPENDIX
Unit Capacity
Total cooling capacity can be determined 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 temperature
C2 = Capacity correction for piping length
C3 = Capacity correction for indoor unit fan speed
Capacity correction factor for piping length (C2)
Piping length (m)
Correction factor C2
Capacity correction factor for temperature
Indoor unit
10
0.98
5
1.00
R.C. = Standard rating conditions : Indoor 27°C DB / 19.5°C WB
Outdoor 35°C DB / 24°C WB
Operating temperature limits
Cooling mode
Heating mode
Maximum
Minimum
+ 19°C
(– 5 with low ambient kit)
– 8°C
+ 46°C
+ 28°C
(heat pump mode)
Capacity correction factor for indoor fan speed (C3)
Fan speed
Correction factor C3
Indoor unit
High
1
Medium
0.90
Low
0.75
20
10
15
20
25
30
35
25
30
35
40
45
Air intake dry bulb temperature, outdoor unit (CDB)
Inlet air wet b
u
lb temperature
, indoor unit (CWB)
R.C.
120%
110%
100%
90%
85%
Capacity correction factor C1
Operating temperature range
03_MAL-MAM.p65
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