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12. PIPING DESIGN
Hyper Heating Inverter Y-Series
12-3. Refrigerant charging calculation
(1) Calculation of additional refrigerant charge
Calculate the amount of additional charge based on the length of the piping extension and the size of the refrigerant line.
Use the table to the below as a guide to calculating the amount of additional charging and charge the system accordingly.
If the calculation results in a fraction of less than 0.1kg [4oz], round up to the next 0.1kg [4oz]. For example, if the result of the calculation
was 12.38kg [436.4oz], round the result up to 12.4kg [437oz].
At the time of shipping, the outdoor unit is charged with the refrigerant. As this charge does not include the amount needed for extended
piping, additional charging for each refrigerant line will be required on site. In order that future servicing may be properly provided, always keep
a record of the size and length of each refrigerant line and the amount of additional charge by writing it in the space provided on the outdoor unit.
<Additional Charge>
*Amount of refrigerant to be
charged for single-module units
Amount of
additional
charge (kg)
=
ø19.05 total length
× 0.29 (kg/m)
+
+
+
ø15.88 total length
× 0.2 (kg/m)
ø12.7 total length
× 0.12 (kg/m)
ø9.52 total length
× 0.06 (kg/m)
+
ø6.35 total length
× 0.024 (kg/m)
Total capacity of connected
indoor units
Amount (kg)
27 or below
2.0
28 to 54
2.5
55 to 126
3.0
127 to 144
3.5
145 to 180
4.5
181 to 234
5.0
235 to 273
6.0
274 to 307
8.0
308 to 342
9.0
343 to 411
10.0
412 to 480
12.0
481 or above
14.0
Outdoor unit
model
Amount (kg)
HP72
0
HP96
0
HP120
0
Units "m" and "kg"
<Formula>
• When the piping length from the outdoor unit to the farthest indoor unit is 30.5 m (100 ft) or shorter
*Amount of refrigerant to be
charged for single-module units
Amount of
additional
charge (kg)
=
ø19.05 total length
× 0.26 (kg/m)
+
+
+
ø15.88 total length
× 0.18 (kg/m)
ø12.7 total length
× 0.11 (kg/m)
ø9.52 total length
× 0.054 (kg/m)
+
ø6.35 total length
× 0.021 (kg/m)
Total capacity of connected
indoor units
Amount (kg)
27 or below
2.0
28 to 54
2.5
55 to 126
3.0
127 to 144
3.5
145 to 180
4.5
181 to 234
5.0
235 to 273
6.0
274 to 307
8.0
308 to 342
9.0
343 to 411
10.0
412 to 480
12.0
481 or above
14.0
Outdoor unit
model
Amount (kg)
HP72
0
HP96
0
HP120
0
• When the piping length from the outdoor unit to the farthest indoor unit is longer than 30.5 m (100 ft)
* When connecting PLFY-EP06NEMU-E**, add 0.4 kg [15 oz] of refrigerant per indoor unit.
* When connecting PLFY-EP18NEMU-E**, PLFY-EP30NEMU-E** or PLFY-EP36NEMU-E**, add 0.65 kg [23oz] of refrigerant per indoor
unit.
* When connecting PEFY-P06NMAU-E**, PEFY-P24NMAU-E**, or PEFY-P36NMAU-E**, add 0.3 kg [11 oz] of refrigerant per indoor unit.
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+
+
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0000006537.BOOK 100 ページ ２０２２年４月１４日 木曜日 午前１０時４１分
