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ENGLISH
Size of the pipe connected to the outdoor unit (A)
Select the size of the pipe according to the below table .
Outdoor unit capacity
[kW (MBH)]
Main pipe length within 90 m (295 ft)
Size Up (Main pipe length over 90 m (295 ft))
Liquid pipe
[mm (inch)]
Gas pipe
[mm (inch)]
Liquid pipe
[mm (inch)]
Gas pipe
[mm (inch)]
22 .4 kW (76 .4 MBH)
Ø 9 .52 (3/8)
Ø 19 .05 (3/4)
Ø 12 .70 (1/2)
Ø 22 .22 (7/8)
28 .0 kW (95 .5 MBH)
Ø 22 .22 (7/8)
Ø 25 .40 (1)
note1)
33 .6 kW (114 .6 MBH)
Ø 12 .70 (1/2)
Ø 28 .58 (1 1/8)
Ø 15 .88 (5/8)
Ø 28 .58 (1 1/8)
40 .0 kW (136 .5 MBH)
45 .0 kW (153 .5 MBH)
Ø 31 .75 (1 1/4)
note2)
50 .4 kW (172 .0 MBH)
Ø 15 .88 (5/8)
Ø 19 .05 (3/4)
56 .0 kW (191 .1 MBH)
61 .6 kW (210 .2 MBH)
67 .2 kW (229 .3 MBH)
Ø 34 .92 (1 3/8)
Ø 38 .10 (1 1/2)
note3)
73 .4 kW ~ 84 .0 kW
(251 .1 MBH ~ 286 .6 MBH)
Ø 19 .05 (3/4)
Ø 22 .22 (7/8)
89 .6 kW ~ 95 .2 kW
(305 .7 MBH ~ 324 .8 MBH)
101 .6 kW (346 .7 MBH)
Ø 41 .28 (1 5/8)
Ø 41 .28 (1 5/8)
106 .6 kW ~ 135 .2 kW
(363 .7 MBH ~ 461 .3 MBH)
140 .2 kW ~ 168 .2 kW
(478 .4 MBH ~ 573 .9 MBH)
Ø 53 .98 (2 1/8)
173 .6 kW ~ 224 .8 kW
(592 .3 MBH ~ 767 .0 MBH)
Ø 22 .22 (7/8)
Ø 53 .98 (2 1/8)
Ø 25 .40 (1)
note1)
Note1) If Ø 25 .40mm (Ø 1”) pipe is not available on site, use Ø 28 .58mm (Ø 1 1/8”) pipe .
Note2) If Ø 31 .75mm (Ø 1 1/4”) pipe is not available on site, use Ø 34 .92mm (Ø 1 3/8”) pipe .
Note3) If Ø 38 .10mm (Ø 1 1/2”) pipe is not available on site, use Ø 41 .28 (Ø 1 5/8”) pipe .