-
144
-
2.2.7
Selection chart
Correct the cooling and heating capacity in accordance with the conditions as follows. The net cooling and heating capacity can be
obtained in the following way.
Net capacity = Capacity shown on specification
×
Correction factors as follows.
(1)
Coefficient of cooling and heating capacity in relation to temperatures
(a)
Capacity compensation coeffcient
1) Cooling
0.40
0.50
0.60
0.70
0.80
0.90
1.00
1.10
1.20
1.30
1.40
-15
-10
-5
0
5
10
15
20
25
30
35
40
43
Outdoor air temperature (
DB)
Capacity compensation coeffcient
Indoor air
temperture 24
℃
W.B
Indoor air
temperture 19
℃
W.B
Indoor air
temperture 12
℃
W.B
Indoor air
temperture 16
℃
W.B
2) Heating
15
16
17
18
19
20
21
22
23
24
25
Indoor air temperature ( DB)
Capacity compensation coeffcient
0.50
0.60
0.70
0.80
0.90
1.00
1.10
1.20
1.40
1.30
1.50
Outdoor air
temperture 18.5
℃
W.B
Outdoor air
temperture 6
℃
W.B
Outdoor air
temperture 10
℃
W.B
Outdoor air
temperture 1
℃
W.B
Outdoor air
temperture -10
℃
W.B
Outdoor air
temperture 0
℃
W.B
If a cooling operation is done when the outdoor air temperature is -5˚C or lower, as much as possible, the outdoor unit should be
installed in a condition where it is not going to be influenced by natural wind. If it is hit by the wind, the compressor stop
frequency will be high because of the drop in the low pressure, the capacity will drop even further and it could cause the unit to
break down.
Caution:
