54
(2) Correction at frost and defrost
6
Outdoor inlet air temp. ˚C
Outdoor inlet air temp. ˚F
43
1.
PUHY-P250YJM-A (-BS)
PUHY-P500YSJM-A (-BS)
PUHY-P750YSJM-A (-BS)
00
1.00
1.00
4
39
0.95
0.98
0.98
2
36
0.84
0.89
0.89
1
34
0.825
0.86
0.88
0
32
0.83
0.89
0.89
-2
28
0.87
0.90
0.90
-4
25
0.90
0.92
0.92
-6
21
0.95
0.95
0.95
-8
18
0.95
0.95
0.95
-10
14
0.95
0.95
0.95
-20
-4
0.95
0.95
0.95
Table of correction factor at frost and defrost
Due to frost at the outdoor heat exchanger and the automatic defrost operation, the heating capacity of the outdoor unit can be
calculated by multiplying the correction factor shown in the table below.
(3) Correction by refrigerant piping length
0.65
0.70
0.75
0.80
0.85
0.90
0.95
1.00
0
20
40
60
80
100
120
140
160
180
0.90
0.92
0.94
0.96
0.98
1.00
0
20
40
60
80
100
120
140
160
180
Piping equivalent length (m)
Cooling capacity correction f
a
ctor
Piping equivalent length (m)
Heating capacity correction f
acto
r
• PFAV-P250VM-E + PUHY-P250YJM-A
PFAV-P300VM-E-F + PUHY-P250YJM-A
• Heating
• How to obtain the equivalent piping length
• Cooling
Equivalent length = (Actual piping length to the farthest indoor unit)
+ (0.42 x number of bends in the piping) m
0.65
0.70
0.75
0.80
0.85
0.90
0.95
1.00
0
20
40
60
80
100
120
140
160
180
0.90
0.92
0.94
0.96
0.98
1.00
0
20
40
60
80
100
120
140
160
180
Piping equivalent length (m)
Cooling capacity correction f
a
ctor
Piping equivalent length (m)
Heating capacity correction f
acto
r
• PFAV-P500VM-E + PUHY-P500YSJM-A
PFAV-P600VM-E-F + PUHY-P500YSJM-A
• Heating
• How to obtain the equivalent piping length
• Cooling
Equivalent length = (Actual piping length to the farthest indoor unit)
+ (0.50 x number of bends in the piping) m
0.65
0.70
0.75
0.80
0.85
0.90
0.95
1.00
0
20
40
60
80
100
120
140
160
180
0.90
0.92
0.94
0.96
0.98
1.00
0
20
40
60
80
100
120
140
160
180
Piping equivalent length (m)
Cooling capacity correction f
a
ctor
Piping equivalent length (m)
Heating capacity correction f
acto
r
• PFAV-P750VM-E + PUHY-P750YSJM-A
PFAV-P900VM-E-F + PUHY-P750YSJM-A
• Heating
• How to obtain the equivalent piping length
• Cooling
Equivalent length = (Actual piping length to the farthest indoor unit)
+ (0.70 x number of bends in the piping) m
Summary of Contents for PUHY-P-YSJM-A
Page 1: ...DATA BOOK AIR CONDITIONING SYSTEMS MODEL PUHY P Y S JM A PFAV P VM E F ...
Page 2: ......
Page 97: ...94 3 Emergency Operation Mode a a a b c d a c ...
Page 98: ...95 b a a a b a b b b ...
Page 100: ...97 ...
Page 101: ...98 ...
Page 103: ......
