Panasonic R410A: 5/16 - Tubing Size

18
192,000
(56.3)
16
6
72,000
(21.1)
96,000
(28.1)
8
U-72ME1U9(E)
U-72ME1U9(E)
U-72ME1U9(E)
U-96ME1U9(E)
U-96ME1U9(E)
U-96ME1U9(E)
U-72ME1U9(E)
U-72ME1U9(E)
U-72ME1U9(E)
139,000
(40.7)
168,000
(49.2)
12 14
203,000
(59.5)
22
240,000
(70.3)
20
U-96ME1U9(E)
U-72ME1U9(E)
U-72ME1U9(E)
U-96ME1U9(E)
U-96ME1U9(E)
U-72ME1U9(E)
264,000
(77.4)
24
U-96ME1U9(E)
U-96ME1U9(E)
U-96ME1U9(E)
288,000
(84.4)
U-96ME1U9(E)U-72ME1U9(E)
BTU/h
(kW)
Total system tonnage
Combined outdoor models
Gas tubing
Liquid tubing
Unit: in. (mm)
o7/8"
(o22.22)
o3/4"
(o19.05)
o3/8"
(o9.52)
o1-1/8"
(o28.58)
o1/2"
(o12.7) (o15.88)
o5/8"
o1-3/8"
(o34.92)
o3/4"
(o19.05)
9
1-6. Tubing Size
Table 1-3 Main Tubing Size (LA)
*1: If future extension is planned, select the tubing diameter based on the total tonnage after extension.
However extension is not possible if the resulting tubing size is two ranks higher.
*2: The balance tube (outdoor unit tube) diameter is ø1/4".
*3: Type 1 tubing should be used for the refrigerant tubes.
*4: If the length of the longest tube (L1) exceeds 295 ft. (equivalent length), increase the main tube (LM) size by 1 rank for the gas
and liquid tubes. (Use field-supply reducers.) (Select from Table 1-3 and Table 1-9.)
*5: If the longest main tube length (LM) exceeds 164 ft., increase the main tube size at the portion before 164 ft. by 1 rank for the
gas tubes.
(For the portion that exceeds 164 ft., set based on the main tube sizes (LA) listed in the table above.)
■ Size of tubing (LO) between outdoor units
Select the size of tubing between outdoor units based on the main tubing size (LA) as given in the table above.
( A – C)
ø3/4" *
1
(ø19.05) *
1
ø3/8" (ø9.52)
ø1/4" (ø6.35)
72,000
(21.1)
96,000
(28.1)
Flare connection
Brazing connection
ø3/8" (ø9.52)
Flare connection
Balance tubing
Liquid tubing
Gas tubing
BTU/h
(kW)
Unit: in. (mm)*1 If the size of tubing (LA) is less than 16.4 feet, it is recommended
that the tubing diameter be larger than ø7/8" (ø22.22).
*2 If the size of tubing (LA) is less than 16.4 feet, it is recommended
that the tubing diameter be larger than ø1-1/8" (ø28.58).
ø7/8" *
2
(ø22.22)*
2
Note: In case the total capacity of connected indoor units exceeds the total capacity of the outdoor units, select the main tubing
size for the total capacity of the outdoor units. (Especially the main tubing segments of LA, LB and LF.)
Table 1-5 Outdoor Unit Tubing Connection Size
Balance tube
Liquid tube
Gas tube
ø3/4"
(ø19.05)
ø1-3/8"
(ø34.92)
ø3/4"
(ø19.05)
ø1-3/8"
(ø34.92)
ø5/8"
(ø15.88)
ø1-1/8"
(ø28.58)
ø1/2"
(ø12.7)
ø1-1/8"
(ø28.58)
ø3/8"
(ø9.52)
ø3/4"
(ø19.05)
ø3/8"
(ø9.52)
ø5/8"
(ø15.88)
ø3/8"
(ø9.52)
ø1/2"
(ø12.7)
Gas tubing
Liquid tubing
–
238,900
178,800
ø1/2"
(ø12.7)
ø1-1/8"
(ø28.58)
178,800
143,30024,200
24,200 334,400
–
334,40054,600
54,600
238,900
76,800
ø3/8"
(ø9.52)
ø7/8"
(ø22.22)
76,800
102,400
102,400
Below BTU/h
Over BTU/h
143,300
Tubing size
Total capacity
after distribution
Table 1-4 Main Tubing Size After Distribution (LB, LC...)
Unit: in. (mm)
Table 1-6 Refrigerant Charge Amount at Shipment (for outdoor unit)
DC
U-72ME1U9, U-72ME1U9E U-96ME1U9, U-96ME1U9E
(oz)
416 416
Gas tubing
Liquid tubing
Indoor unit type 7 9 12 15 18 19 24 36 48 54
Unit: in. (mm)
o1/2" (o12.7)
o1/4" (o6.35)
o5/8" (o15.88)
o3/8" (o9.52)
Table 1-7 Indoor Unit Tubing Connection Size
Note: Use C1220T-1/2H material for tubing over ø3/4" (ø22.22).