Mitsubishi Electric CITY MULTI PURY-HP72TNU-A Data Book page 114

12. PIPING DESIGN
* When connecting the CMB-P**-NU-G1, CMB-P**-NU-GA1, CMB-P**-NU-HA1, CMB-P**-NU-GB1, or CMB-P**-NU-HB1 to a given system, add the
amount of refrigerant as indicated in the table below.
BC controller Amount (oz/unit)
G1/GA1-type 0
HA1-type 71
GB1/HB1-type 36
• When the piping length from the outdoor unit to the farthest indoor unit is longer than 30.5 m (100 ft)
Amount of High-pressure pipe
additional = ø1-1/8 total length
charge (oz) × 3.54 (oz/ft)
Liquid pipe ø3/4
+ total length
× 2.81 (oz/ft)
Main or Sub
BC controller
J-type
+
JA-type
KA-type
KB-type
* When connecting PEFY-P06NMAU-E**, PEFY-P24NMAU-E**, or PEFY-P36NMAU-E**, add 0.55 kg [20 oz] of refrigerant per indoor unit.
* When connecting PLFY-EP06NEMU-E**, PLFY-EP18NEMU-E**, or PLFY-EP36NEMU-E**, add 0.67 kg [24 oz] of refrigerant per indoor unit.
* High-pressure pipe: Main high-pressure pipe between outdoor unit and BC controller
* Liquid pipe: Liquid pipe between BC controller and indoor unit or between main BC controller and sub BC controller
* When connecting the CMB-P**-NU-G1, CMB-P**-NU-GA1, CMB-P**-NU-HA1, CMB-P**-NU-GB1, or CMB-P**-NU-HB1 to a given system, add the
amount of refrigerant as indicated in the table below.
BC controller Amount (oz/unit)
G1/GA1-type 0
HA1-type 71
GB1/HB1-type 36
Amount of factory charged refrigerant
Outdoor unit
Charged amount
Model
8.0 kg [283 oz]
HP72
HP96
10.8 kg [381 oz]
HP120 10.8 kg [381 oz]
MEES19K180
Total capacity of outdoor units
HP72
HP96
+
HP120
HP144-HP240
High-pressure pipe High-pressure pipe
+ ø7/8 total length + ø3/4 total length
× 2.26 (oz/ft) × 1.51 (oz/ft)
Liquid pipe ø5/8 Liquid pipe ø1/2
+ total length + total length
× 1.94 (oz/ft) × 1.19 (oz/ft)
Amount Total capacity of connected
(oz/unit) indoor units
53 27 or below
106 28 to 54
166 55 to 126
15 127 to 144
145 to 180
+
181 to 234
235 to 273
274 to 307
308 to 342
343 to 411
412 to 450
451 or above
Total capacity of outdoor units
HP72
HP96
+
HP120
HP144-HP240
Sample calculation
Units "m" and "kg"
Indoor 1: 18 A: ø22.2
2: 96 B: ø9.52
3: 06 C: ø12.7
4: 06 D: ø9.52
5: 48 E: ø9.52
6: 36 F: ø9.52
7: 30 G: ø19.05
8: 18 H: ø19.05
Outdoor
HP240
Main BC controller CMB-P108NU-JA1
Sub BC controller CMB-P104NU-KB1 × 4
Units "ft" and "oz"
Indoor 1: 18 A: ø7/8
2: 96 B: ø3/8
3: 06 C: ø1/2
4: 06 D: ø3/8
5: 48 E: ø3/8
6: 36 F: ø3/8
7: 30 G: ø3/4
8: 18 H: ø3/4
Outdoor
HP240
Main BC controller CMB-P108NU-JA1
Sub BC controller CMB-P104NU-KB1 × 4
Amount (To be added for G1/GA1/HA1-type BC controller)
106 oz
159 oz
159 oz
212 oz
High-pressure pipe
+ ø5/8 total length
× 1.08 (oz/ft)
Liquid pipe ø3/8
+ total length +
× 0.59 (oz/ft)
Amount (oz)
(to be added for
indoor unit)
71
89
106
124
159
177
212
283
318
353
424
494
Amount (To be added for G1/GA1/HA1-type BC controller)
106 oz
159 oz
159 oz
212 oz
The total length of each liquid line as follows:
40m a: ø6.35 10m
ø22.2: A = 40 m
10m b: ø9.52 10m
20m c: ø6.35 5m ø19.05: G + H = 4 m
5m d: ø6.35 5m
ø12.70: C = 20 m
5m e: ø9.52 5m
ø9.52: B + D + E + F + b + e + f + g = 50 m
5m f: ø9.52 5m
ø6.35: a + c + d + h = 30 m
3m g: ø9.52 5m
<Calculation example>
1m h: ø6.35 10m
Additional refrigerant charge
= 40 × 0.21 + 4 × 0.14 + 20 × 0.11 + 50 × 0.054
+ 30 × 0.021 + 3 + 0.4 × 4 + 6
= 25.1 (25.09)kg
The total length of each liquid line as follows:
131ft a: ø1/4 32ft
ø7/8: A = 131 ft
32ft b: ø3/8 32ft
65ft c: ø1/4 16ft ø3/4: G + H = 12 ft
16ft d: ø1/4 16ft
ø1/2: C = 65 ft
16ft e: ø3/8 16ft
ø3/8: B + D + E + F + b + e + f + g = 160 ft
16ft f: ø3/8 16ft
ø1/4: a + c + d + h = 96 ft
9ft g: ø3/8 16ft
<Calculation example>
3ft h: ø1/4 32ft
Additional refrigerant charge
= 131 × 2.26 + 12 × 1.51 + 65 × 1.19 + 160 × 0.59
+ 96 × 0.23 + 106 + 15 × 4 + 212
= 886.1 (886.01)oz
Hyper Heating Inverter R2-Series
Liquid pipe ø1/4
total length
× 0.23 (oz/ft)
112