Mitsubishi Electric PUMY-P112VKM4 Technical & Service Manual page 25

Figure 13 PUMY-P140VKM4(-BS)
PUMY-P140VKM4R1(-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 14 PUMY-P112/125/140VKM4(-BS)
PUMY-P112/125/140YKM4(-BS)
PUMY-P112/125/140YKME4(-BS) PUMY-P112/125/140YKME4R1(-BS)
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 = (length of piping to farthest indoor unit) + (0.3 o number of bends in the piping) (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
OCH673C
PUMY-P140YKM(E)4(-BS)
PUMY-P140YKM(E)4R1(-BS)
20 40 60
Piping equivalent length (m)
20 40 60
6 4 2
1.0 0.98 0.89
80 100 120
PUMY-P112/125/140VKM4R1(-BS)
PUMY-P112/125/140YKM4R1(-BS)
80 100 120
Piping equivalent length (m)
−2 −4
0
0.88 0.89 0.9
25
<Cooling>
Total capacity of indoor unit
7.8
11.6
15.5
20.2
140 160 180
<Heating>
140 160 180
−6 −8 −10 −15
0.95 0.95 0.95 0.95
−20
0.95