Mitsubishi Electric CITY MULTI PUHY-HP-TNU-A Série Manuel D'installation page 36

c : ø6.35; 10 m
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
model
HP72
HP96
+
HP120
* 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
model
HP72
HP96
+
HP120
* 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: HP120
Total capacity of connected indoor units: 144
= 11.6 kg (Fractions are rounded up.)
ø5/8 total length ø1/2 total length
+ +
× 2.15 (oz/ft) × 1.29 (oz/ft)
Total capacity of connected
Amount (oz)
0
0
+
0
481 or above
ø5/8 total length ø1/2 total length
+ +
× 1.94 (oz/ft) × 1.19 (oz/ft)
Total capacity of connected
Amount (oz)
0
0
+
0
481 or above
ø3/8 total length
+
× 0.65 (oz/ft)
Amount (oz)
indoor units
27 or below 71
28 to 54 89
55 to 126 106
127 to 144 124
145 to 180 160
181 to 234 177
235 to 273 212
274 to 307 283
308 to 342 318
343 to 411 353
412 to 480 424
494
ø3/8 total length
+
× 0.58 (oz/ft)
Amount (oz)
indoor units
27 or below 71
28 to 54 89
55 to 126 106
127 to 144 124
145 to 180 160
181 to 234 177
235 to 273 212
274 to 307 283
308 to 342 318
343 to 411 353
412 to 480 424
494
ø1/4 total length
+
× 0.26 (oz/ft)
ø1/4 total length
+
× 0.23 (oz/ft)