Mitsubishi Electric City Multi PUMY-SP112VKM Technical & Service Manual page 24

Figure 14 PUMY-SP140VKM.TH(-BS)
PUMY-SP140VKMR1.TH(-BS)
1.00
0.95
0.90
0.85
0.80
0.75
0.70
0.65
0.60
0.55
0.50
0
Figure 15 PUMY-SP112/125/140VKM(-BS) PUMY-SP112/125/140VKMR1(-BS) <Heating>
PUMY-SP112/125/140YKM(-BS) PUMY-SP112/125/140YKMR1(-BS) <Heating>
1.00
0.95
0.90
0.85
0.80
0.75
0.70
0.65
0.60
0.55
0.50
0
(2) Method for Obtaining the Equivalent Piping Length
Equivalent length for type SP112·125·140 = (length of piping to farthest indoor unit) + (0.3 o number of bends in the piping) (m)
Length of piping to farthest indoor unit: type SP112–SP140.....70 m
4-5-1. Correction of Heating Capacity for Frost and Defrosting
If heating capacity has been reduced due to frost formation or defrosting, multiply the capacity by the appropriate correction
factor from the following table to obtain the actual heating capacity.
Correction factor diagram
Outdoor Intake temperature (W.B.°C)
Correction factor
OCH668B
PUMY-SP140YKM.TH(-BS)
PUMY-SP140YKMR1.TH(-BS)
20 40
Piping equivalent length (m)
20 40
Piping equivalent length (m)
6 4 2
1.0 0.98 0.89
Total capacity of indoor unit
60 80
60 80
0 −2 −4
0.88 0.89 0.9 0.95
24
<Cooling>
7.8
11.6
15.5
20.2
−6 −8 −10 −15
0.95 0.95 0.95
−20
0.95