Mitsubishi Electric CITY MULTI PUMY-P112VKM6 Service Manual page 25

PUMY-P140VKM6(-BS)
PUMY-P140YKM5(-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 7> Correction of refrigerant piping length
5-5-2. Heating
PUMY-P112/125/140VKM6(-BS)
PUMY-P112/125/140YKM5(-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 8> Correction of refrigerant piping length
■ Method for obtaining the piping equivalent length
Piping equivalent length = piping length to the farthest indoor unit + 0.3 × number of bends in the piping (m)
5-5-3. 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 correc-
tion factor from the following table to obtain the actual heating capacity.
Correction factor diagram
Outdoor Intake temperature (°C WB)
Correction factor
OCH790 _25
20 40 60
Piping equivalent length (m)
20 40 60
Piping equivalent length (m)
6 4 2
1.00 0.98 0.89
PUMY-P140VKM6-ER(BS)
PUMY-P140YKM5-ER(BS)
80 100 120 140
PUMY-P112/125/140VKM6-ER(BS)
PUMY-P112/125/140YKM5-ER(BS)
80 100 120
0 -2 -4 -6 -8
0.88 0.89 0.90 0.95 0.95
Total capacity of indoor unit
7.8
11.6
15.5
20.2
160 180
140 160 180
-10 -15 -20
0.95 0.95 0.95