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8. CAPACITY TABLES
8-3-3. How to obtain the equivalent piping length
Refrigerant pipe
1. PURY-(E)M200YNW-A1(-BS)
Equivalent length = (Actual piping length to the farthest indoor unit) + (0.35 × number of bends in the piping) [m]
2. PURY-(E)M250, 300YNW-A1(-BS)
Equivalent length = (Actual piping length to the farthest indoor unit) + (0.42 × number of bends in the piping) [m]
3. PURY-(E)M350YNW-A1(-BS)
Equivalent length = (Actual piping length to the farthest indoor unit) + (0.47 × number of bends in the piping) [m]
4. PURY-(E)M400, 450, 500YNW-A1(-BS)
Equivalent length = (Actual piping length to the farthest indoor unit) + (0.50 × number of bends in the piping) [m]
Water pipe
Equivalent length = (Actual piping length to the farthest indoor unit) + (0.55 × number of bends in the piping) [m]
8-4. Correction 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.
Table of correction factor at frost and defrost
Outdoor inlet air temp. °CWB
Outdoor inlet air temp. °FWB
PURY-(E)M200YNW-A1(-BS)
PURY-(E)M250YNW-A1(-BS)
PURY-(E)M300YNW-A1(-BS)
PURY-(E)M350YNW-A1(-BS)
PURY-(E)M400YNW-A1(-BS)
PURY-(E)M450YNW-A1(-BS)
PURY-(E)M500YNW-A1(-BS)
MEES18K068
6
4
2
1
43
39
36
34
1.00
0.95
0.84
0.83
1.00
0.95
0.84
0.83
1.00
0.93
0.82
0.80
1.00
0.93
0.85
0.83
1.00
0.95
0.90
0.87
1.00
0.98
0.89
0.87
1.00
0.98
0.89
0.86
0
-2
-4
-6
32
28
25
21
0.83
0.87
0.90
0.95
0.83
0.87
0.90
0.95
0.82
0.86
0.90
0.90
0.84
0.86
0.90
0.90
0.88
0.89
0.90
0.95
0.89
0.90
0.92
0.95
0.89
0.90
0.92
0.95
R2-Series
-8
-10
-20
18
14
-4
0.95
0.95
0.95
0.95
0.95
0.95
0.95
0.95
0.95
0.95
0.95
0.95
0.95
0.95
0.95
0.95
0.95
0.95
0.95
0.95
0.95
67
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