Mitsubishi Electric CITY MULTI PUHY-P72TNU-A-B Manuel D'installation page 42

d : ø6.35; 10 m
e : ø9.52; 10 m
The total length of each liquid piping is as follows:
ø12.7 total length: 40 (A)
ø9.52 total length: 10 (B) + 15 (C) + 10 (D) + 10 (a) + 5 (b) + 10 (e) = 60
ø6.35 total length: 10 (c) + 10 (d) = 20
Therefore, when the piping length from the outdoor unit to the farthest indoor unit is longer than 30.5 m (100 ft),
Amount of additional charge = (40 × 0.11) + (60 × 0.054) + (20 × 0.021) + 0 + 3.5
(2) Units "ft" and "oz"
<Formula>
・When the piping length from the outdoor unit to the farthest indoor unit is 30.5 m (100 ft) or shorter
Amount of
ø3/4 total length
additional =
× 3.1 (oz/ft)
charge (oz)
Outdoor unit
+
* Amount of refrigerant to be
charged for single-module units
・When the piping length from the outdoor unit to the farthest indoor unit is longer than 30.5 m (100 ft)
Amount of
ø3/4 total length
additional =
× 2.80 (oz/ft)
charge (oz)
Outdoor unit
+
* Amount of refrigerant to be
charged for single-module units
* When connecting PLFY-EP06NEMU-E, add 15 oz of refrigerant per indoor unit.
* When connecting PLFY-EP18NEMU-E1, add 15 oz of refrigerant per indoor unit.
* When connecting PLFY-EP30NEMU-E, add 15 oz of refrigerant per indoor unit.
* When connecting PLFY-EP36NEMU-E, add 15 oz of refrigerant per indoor unit.
* When connecting PEFY-P06NMAU-E, add 11 oz of refrigerant per indoor unit.
* When connecting PEFY-P24NMAU-E, add 11 oz of refrigerant per indoor unit.
* When connecting PEFY-P36NMAU-E, add 11 oz of refrigerant per indoor unit.
<Example>
Outdoor unit model: P120
Total capacity of connected indoor units: 144
* Refer to the pipe connection examples in section 9-4 for the pipes marked with the letters below.
A : ø1/2; 131 ft
WT09452X01
= 11.6 kg (Fractions are rounded up.)
ø5/8 total length
+
× 2.15 (oz/ft)
Amount (oz)
model
(E)P72 0
(E)P96 0
(E)P120 0
(E)P144 0
(E)P168 0
EP192 0
EP216 4.4
EP240 4.4
ø5/8 total length
+
× 1.94 (oz/ft)
Amount (oz)
model
(E)P72 0
(E)P96 0
(E)P120 0
(E)P144 0
(E)P168 0
EP192 0
EP216 4.4
EP240 4.4
ø1/2 total length
+
× 1.29 (oz/ft)
Total capacity of connected
indoor units
27 or below
28 to 54
55 to 126
127 to 144
145 to 180
+
181 to 234
235 to 273
274 to 307
308 to 342
343 to 411
412 to 480
481 or above
ø1/2 total length
+
× 1.19 (oz/ft)
Total capacity of connected
indoor units
27 or below
28 to 54
55 to 126
127 to 144
145 to 180
+
181 to 234
235 to 273
274 to 307
308 to 342
343 to 411
412 to 480
481 or above
GB-40
ø3/8 total length ø1/4 total length
+ +
× 0.65 (oz/ft) × 0.26 (oz/ft)
Amount (oz)
71
89
106
124
160
177
212
283
318
353
424
494
ø3/8 total length ø1/4 total length
+ +
× 0.58 (oz/ft) × 0.23 (oz/ft)
Amount (oz)
71
89
106
124
160
177
212
283
318
353
424
494