26
Heating capacity = Capacity of outdoor unit after modification x frosting capacity modification (Capacity of outdoor unit after modification: calculated heating capacity in Item 2)
(6) Frosting capacity modification value of outdoor heat exchanger
1.0
0.9
0.8
-15
-10 -5 0 5 10
Coefficient of capacity modification
Outdoor air wet-bulb temperature *
4) Calculation method of operation capacity of one set indoor unit
Total value of standard capacity of indoor unit group
(Capacity of outdoor unit after modification: Calculated cooling capacity or heating capacity after modification in Item
1,2).
Running temperature range
45
40
35
30
25
20
15
10
5
0
-5
-10
10 15 20 25 30
indoor air wet-bulb temperature*
outdoor air dry-bulb temperature *
Range of continuously running
15
10
5
0
-5
-15
5 10
15 20
25
-20
-10
30
Outdoor air web-bulb temperature *
Indoor air dry-bulb temperature *
Range of continuously running
heating
Operation capacity of one set indoor unit = capacity of outdoor unit after modification x
standard operation capacity of indoor unit to be known
cooling
3) Capacity modification when indoor unit and outdoor unit and heat exchanger frost when
heating
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