60
(2) Calculation method of heating capacity---Heating capacity to be known=Heating capacity x(AxBxCxDxExF) W
A. Capacity modication value
under indoor air dry-bulb
temperature condition.
D. Capacity compensation
suitable for total capability of
indoor unit group(heating)
F. Heating compensation factor at different pipe length
Pipe length of single way (m)
Outdoor modied capacity heating or outdoor capacity after modify item 1 and 2 )
(3) Calculation method of refrigeration capacity-Only one indoor unit running
Outdoor modied capacity with a single indoor running=outdoor modied capacity*
E. Capacity compensation coefficient for defrost
capability of outdoor heat exchanger.
Total capacity of indoor unit group(%) Outdoor air wet-bulb temperature
Outdoor air wet-bulb temperature
B. Capacity modication value under outdoor air
wet-bulb temperature condition.
C. Capacity modication value
under airow variation rate of
indoor unit group.
stand by indoor normal capacity
indoor total normal capacity.
1.2
1.1
1.0
0.9
0.8
15
20
24
Capacity modification
coefficient
Capacity modification coefficient
-15 -10 -5 0 5 10 15
1.1
1.0
0.9
0.8
0.7
0.6
0.5
0.4
-20
-23
Capacity modification
coefficient
Indoor air dry-bulb temperature(°C)
1.1
1.0
0.9
80
90
100 110 120
Airflow variation rate（%）
0.90
0.92
0.94
0.98
0.96
1.00
Heat
factor
All models
Capacity modification coefficient
Capacity modification coefficient
1.0
1.2
0.8
0.6
0.4
0.2
0 20 40
60
80 100
Standard
capacity
120
140
-15
0.8
0.9
1.0
-10 -5
0 5 10
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