MEES19K187
PQ
RY-P-T
(S)L
MU-A
1, Y(S)L
M
U-A
1, Z(
S)LMU
-A1
354
1. Piping Design
Amount of
additional
charge (oz)
=
High-pressure pipe
ø1-1/8 total length
× 3.54 (oz/ft)
+
+
+
High-pressure pipe
ø7/8 total length
× 2.26 (oz/ft)
High-pressure pipe
ø3/4 total length
× 1.51 (oz/ft)
High-pressure pipe
ø5/8 total length
× 1.08 (oz/ft)
+
+
+
Liquid pipe ø5/8
total length
× 1.94 (oz/ft)
Liquid pipe ø1/2
total length
× 1.19 (oz/ft)
Liquid pipe ø3/8
total length
× 0.59 (oz/ft)
Liquid pipe ø1/4
total length
× 0.23 (oz/ft)
+
+
Total capacity of connected
indoor units
Amount (oz)
(to be added for
indoor unit)
27 or below
71
28 to 54
89
55 to 126
106
127 to 144
124
145 to 180
159
181 to 234
177
235 to 273
212
274 to 307
283
308 to 342
318
343 to 411
353
412 to 450
424
451 or above
494
+
Main or Sub
BC controller
Amount
(oz/unit)
J-type
53
JA-type
106
KA-type
166
KB-type
15
• When the piping length from the outdoor unit to the farthest indoor unit is longer than 30.5 m (100 ft)
Amount of factory charged refrigerant
Sample calculation
Indoor
Outdoor
Main BC controller CMB-P108NU-JA1
Sub BC controller CMB-P104NU-KB1
× 4
A:
B:
C:
D:
E:
F:
G:
H:
ø28.58
ø9.52
ø12.7
ø9.52
ø9.52
ø9.52
ø19.05
ø19.05
40m
10m
20m
5m
5m
5m
3m
1m
1: 18
2: 96
3: 06
4: 06
5: 48
6: 36
7: 30
8: 18
a:
b:
c:
d:
e:
f:
g:
h:
ø6.35
ø9.52
ø6.35
ø6.35
ø9.52
ø9.52
ø9.52
ø6.35
P288
The total length of each liquid line as follows:
ø28.58: A = 40 m
ø19.05: G + H = 4 m
ø12.70: C = 20 m
ø9.52: B + D + E + F + b + e + f + g = 50 m
ø6.35: a + c + d + h = 30 m
<Calculation example>
Additional refrigerant charge
= 40 × 0.33 + 4 × 0.14 + 20 × 0.11 + 50 × 0.054
+ 30 × 0.021 + 3 + 0.4 × 4 + 8
= 31.9 (31.89)kg
10m
10m
5m
5m
5m
5m
5m
10m
Units "m" and "kg"
Indoor
Outdoor
Main BC controller CMB-P108NU-JA1
Sub BC controller CMB-P104NU-KB1 × 4
A:
B:
C:
D:
E:
F:
G:
H:
ø1-1/8
ø3/8
ø1/2
ø3/8
ø3/8
ø3/8
ø3/4
ø3/4
131ft
32ft
65ft
16ft
16ft
16ft
9ft
3ft
1: 18
2: 96
3: 06
4: 06
5: 48
6: 36
7: 30
8: 18
a:
b:
c:
d:
e:
f:
g:
h:
ø1/4
ø3/8
ø1/4
ø1/4
ø3/8
ø3/8
ø3/8
ø1/4
P288
The total length of each liquid line as follows:
ø1-1/8: A = 131 ft
ø3/4: G + H = 12 ft
ø1/2: C = 65 ft
ø3/8: B + D + E + F + b + e + f + g = 160 ft
ø1/4: a + c + d + h = 96 ft
<Calculation example>
Additional refrigerant charge
= 131 × 3.54 + 12 × 1.51 + 65 × 1.19 + 160 × 0.59
+ 96 × 0.23 + 106 + 15 × 4 + 283
= 1124.7 (1124.69)oz
32ft
32ft
16ft
16ft
16ft
16ft
16ft
32ft
Units "ft" and "oz"
+
Liquid pipe ø3/4
total length
× 2.81 (oz/ft)
* 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.
* When connecting PLFY-P08NBMU-E2, add 0.3kg [11oz] of refrigerant per indoor unit.
* When connecting PLFY-EP08NEMU-E, add 0.3kg [11oz] 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
106
HA1-type
177
GB1/HB1-type
36
* 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
106
HA1-type
177
GB1/HB1-type
36
+
Additional charge
Heat source unit model
Charged amount
Heat source unit
Model
P240
P216
P144
Charged amount
6.0 kg
11.7 kg
5.0 kg
P192
P168
P120
P96
P72
Single
P216
P240
36 oz
36 oz
0000005757.BOOK 354 ページ ２０２０年２月２８日 金曜日 午後１時４４分
