Mitsubishi Electric PQHY-P200YLM-A Service Handbook page 206

[ VIII Test Run Mode ]
Heat source unit model
P200 model
P250 model
P300 model
P350 model
Single P400 model
P450 model
P500 model
P550 model
P600 model
Round up the calculation result to the nearest 0.1kg. (Example: 18.04kg to 18.1kg)
Round up the calculation result in increments of 4oz (0.1kg) or round it up to the nearest 1oz. (Example: 78.21oz to 79oz)
When connecting PEFY-P20VMA3-E units, add 0.54 kg of refrigerant for each of these units.
When connecting PEFY-P25/32/40VMA3-E units, add 0.74 kg of refrigerant for each of these units.
When connecting PEFY-P50/63/71/80/100/125VMA3-E units, add 1.16 kg of refrigerant for each of these units.
(2) Example PQRY-P700 YSLM-A
Heat source unit 1
F
Reducer (P15-P50)
(attached with BC controller)
(3) Sample calculation
Indoor 1: 50
2: 250
3: 15
4: 20
5: 140
6: 200
Heat source
HWE15060
Charged amount for Heat source
units
β (kg)
0.0
0.0
0.0
0.0
0.0
0.0
0.0
1.0
1.0
Heat source unit 2
Twinning kit
G
A
BC controller (Main BC)
a
Joint kit
b
IU IU
2 : P250
1 : P50
A: ø28.58 40m a: ø6.35 10m
B: ø9.52 10m b: ø9.52 5m
C: ø12.70 20m c: ø6.35 5m
D: ø9.52 5m d: ø6.35 10m
E: ø9.52 5m e: ø9.52 5m
F: ø19.05 3m f: ø9.52 5m
G: ø19.05 1m
P700
β' (oz)
0
0
0
0
0
0
0
35
35
Joint
C
Joint
B
c d
IU IU
3 : P15 4 : P20
The total length of each liquid line is as follows:
ø28.58: A = 40 m
ø19.05: F + G = 4 m
ø12.70: C = 20 m
ø9.52: B + D + E + b + e + f = 35 m
ø6.35: a + c + d = 25 m
Therefore,
<Calculation example>
Additional refrigerant charge
= 40 × 0.33 + 4 × 0.14 + 20 × 0.11 + 35 × 0.054 + 25 × 0.021 + 6
+ 2 + 2 + 6
= 34.4 (34.375) kg
- 197 -
IU
e
5 : P140
BC controller (Sub BC)
D
BC controller (Sub BC)
E
f
IU
6 : P200
GB