Panasonic U-120ME2U9, Руководство по установке

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9
1-6. Tubing Size
Table 1-3 Main Tubing Size (LA)
Between No.1 distribution joint for outdoor unit and No.1 distribution joint (for indoor unit)
Unit: in. (mm)
BTU/h
(kW)
72,000
(21.1)
96,000
(28.1)
120,000
(35.2)
144,000
(42.2)
168,000
(49.2)
192,000
(56.3)
216,000
(63.3)
240,000
(70.3)
264,000
(77.4)
288,000
(84.4)
312,000
(91.4)
336,000
(98.4)
360,000
(105.5)
Total system
tonnage
6 8 10 12 14 16 18 20 22 24 26 28 30
Gas tubing
ø3/4"
(ø19.05)
ø7/8"
(ø22.22)
ø1-1/8"
(ø28.58)
ø1-3/8"
(ø34.92)
ø1-5/8"
(ø41.28)
Liquid tubing
ø3/8"
(ø9.52)
ø1/2"
(ø12.7)
ø5/8"
(ø15.88)
ø3/4"
(ø19.05)
*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 three ranks higher.
*2: The balance tube (outdoor unit tube) diameter is ø1/4" (6.35mm).
*3: Type 1 tubing should be used for the refrigerant tubes.
n
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.
Table 1-4 Main Tubing Size After Distribution (LB, LC...)
Unit: in. (mm)
Total capacity
after distribution
Below BTU/h (kW)
24,200
(7.09)
54,600
(16.0)
76,800
(22.5)
102,400
(30.0)
143,300
(42.0)
178,800
(52.4)
238,900
(70.0)
340,000
(99.6)
–
Over BTU/h (kW) –
24,200
(7.09)
54,600
(16.0)
76,800
(22.5)
102,400
(30.0)
143,300
(42.0)
178,800
(52.4)
238,900
(70.0)
340,000
(99.6)
Tubing size
Gas tubing
ø1/2"
(ø12.7)
ø5/8"
(ø15.88)
ø3/4"
(ø19.05)
ø7/8"
(ø22.22)
ø1-1/8"
(ø28.58)
ø1-1/8"
(ø28.58)
ø1-1/8"
(ø28.58)
ø1-3/8"
(ø34.92)
ø1-5/8"
(ø41.28)
Liquid tubing
ø3/8"
(ø9.52)
ø3/8"
(ø9.52)
ø3/8"
(ø9.52)
ø3/8"
(ø9.52)
ø1/2"
(ø12.7)
ø1/2"
(ø12.7)
ø5/8"
(ø15.88)
ø3/4"
(ø19.05)
ø3/4"
(ø19.05)
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.
Table 1-5 Outdoor Unit Tubing Connection Size (
A
– C )
Unit: in. (mm)
BTU/h
(kW)
72,000
(21.1)
96,000
(28.1)
120,000
(35.2)
144,000
(42.2)
Gas tubing
ø3/4"
(ø19.05)
ø7/8"
(ø22.22)
ø1-1/8"
(ø28.58)
Brazing connection
Liquid tubing
ø3/8" (ø9.52) ø3/8" (ø9.52) ø1/2" (ø12.7)
Flare connection
Balance tubing
ø1/4" (ø6.35)
Flare connection
Table 1-6 Refrigerant Charge Amount at Shipment (for outdoor unit)
BTU/h (kW) 72,000 (21.1) 96,000 (28.1) 120,000 (35.2) 144,000 (42.2)
Initial amount
oz (
g
) 321 (9,100) 363 (10,300) 300 (8,500) 416 (11,800)
Table 1-7 Indoor Unit Tubing Connection Size
Unit: in. (mm)
Indoor unit type 7 9 12 15 18 24 36 48 54
Gas tubing ø1/2" (ø12.7) ø5/8" (ø15.88)
Liquid tubing ø1/4" (ø6.35) ø3/8" (ø9.52)
ex.) type72
Balance
tube
Liquid tube
Gas tube
00_302411_EN.indd 9 2018/7/4 13:27:17