-
65
-
(5)
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.
(a)
Coefficient of cooling and heating capacity in relation to temperatures
(b)
Correction of cooling and heating capacity in relation to one way length of refrigerant piping
It is necessary to correct the cooling and heating capacity in relation to the one way piping length between the indoor and outdoor
units
.
(c)
Correction relative to frosting on outdoor heat exchanger during heating
In additions to the foregoing corrections (a), (b) the heating capacity needs to be adjusted also with respect to the frosting on the
outdoor heat exchanger.
How to obtain the cooling and heating capacity
Example : The net cooling capacity of the model SRK22ZEV-S4 with the piping length of 15m, indoor wet-bulb temperature at
19.0˚C and outdoor dry-bulb temperature 35˚C is Net cooling capacity = 6300
✕
0.975
✕
1.0
=
6143W
SRK22ZEV-S4
Length 15m
Factor by air
temperatures
Cooling
Heating
22
20
18
16
14
0.6
0.7
0.8
0.9
1.0
1.2
1.1
1.3
0
-5
-10
-15
Applicable range
Depends on installed situation
24
26
20
25
30
35
40
46
10
15
20
25
27
Outdoor air W.B. temperature ˚C W.B.
-15
-10
-5
0
5
10
15
Indoor air W.B. temperature ˚C W.B. ISO-T1 Standard Condition
Cooling operation
Outdoor air D.B.
temperature
˚CD. B.
Coefficient of cooling
&
Heating capacity in
relation to temperature
Heating operation
Indoor air D.B.
temperature
˚CD. B.
ISO-T1 Standard Condition
Piping length [m]
Cooling
Heating
7
1.0
1.0
10
0.99
1.0
15
0.975
1.0
20
0.965
1.0
25
0.95
1.0
0.935
1.0
30
Air inlet temperature of
outdoor unit in ˚C WB
Adjustment coefficient
-10
0.95
-9
0.94
-7
0.93
-5
0.91
-3
0.88
-1
0.86
1
0.87
3
0.92
5
1.00
Summary of Contents for SRK13ZEV-S4
Page 2: ...TECHNICAL MANUAL 1 SRK13ZEV S4 2 2 SRK22ZEV S4 60 1 ...
Page 126: ...PARTS LIST INDOOR UNIT SRK13ZEV S4 SRK22ZEV S4 OUTDOOR UNIT SRC13ZEV S4 SRC22ZEV S4 125 ...
Page 134: ...MEMO 133 ...
Page 137: ... 136 CRBE0226 1 3 4 2 5 6 7 8 9 10 11 12 13 PANEL FAN ASSY ...
Page 145: ...ROOM AIR CONDITIONING TECHNICAL MANUAL PARTS LIST Manual No 06 SRK T 054 ...