4. Installing the refrigerant piping
H
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| A+B+C+a+b+c+d = 120 m [394 ft] | A |
|
|
|
|
| (mm [inch]) | |||||||||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| L = A+B+C+d = 80 m [262 ft] |
|
| Å Liquid pipe |
| ı Gas pipe | |||||||||||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| R= B+C+d = 30 m [100 ft] | PUMY |
|
| ø9.52 [3/8] |
| ø15.88 [5/8] | ||||||||||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| ||||||||||||||||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| H = | 30 m [100 ft] (Outdoor lower H = 20 m [70 ft]) |
|
|
|
|
|
|
|
| |||||||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| B, C, D |
|
|
|
|
| (mm [inch]) | ||||||||||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| h = 12 m [39 ft] |
|
|
|
|
| |||||||||||||||||||||
|
|
|
|
|
|
|
|
|
| A |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| L | Ç Total capacity of indoor units |
| Å Liquid pipe | ı Gas pipe | |||||||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| ø9.52 [3/8] |
| ø15.88 [5/8] | ||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |||
|
|
|
|
|
|
| H |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| r | a, b, c, d, e, f |
|
|
|
|
| (mm [inch]) | |||||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |||||||||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| ||||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| B |
|
|
|
|
| C |
|
|
|
|
|
| d |
|
|
|
|
|
|
|
|
|
| |||
|
|
|
|
|
|
|
|
| B |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Î Model number |
|
| Å Liquid pipe | ı Gas pipe | ||||||||||
|
|
|
|
|
|
|
|
| a |
|
|
|
| b |
|
|
|
| c |
|
|
|
|
|
|
|
|
|
| ||||||||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| P06, P08, P12, P15, P18 |
|
| ø6.35 [1/4] |
| ø12.7 [1/2] | ||||||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| C |
| C |
|
| C |
|
|
|
|
|
|
| P24, P30, P36, P48, P54 |
|
| ø9.52 [3/8] |
| ø15.88 [5/8] | |||||||||||||
|
|
|
|
|
|
|
|
| h |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |||||||||||||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| C |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| ‰ Branch kit model |
| ||||
|
|
|
|
| A+a+b+c+d = 120 m [394 ft] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |||||||||||||||||||||||||
|
|
|
|
| L = A+d = 80 m [262 ft], R= d = 30 m [100 ft] |
|
|
|
|
|
|
|
| ||||||||||||||||||||||||||||||||||
|
|
|
|
| H = 30 m [100 ft] (Outdoor lower H = 20 m [70 ft]) | Ï |
|
|
| Ì | |||||||||||||||||||||||||||||||||||||
|
|
|
|
| h = 12 m [39 ft] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |||||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| ||||||||||||||||||||||
A |
|
|
|
|
|
| L |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| ||||||||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| A : Outdoor Unit |
|
|
|
|
|
|
|
| ||||||||||||||||||
|
| B |
|
|
|
|
|
|
|
|
|
|
| r |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |||||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| B : First Branch |
|
|
|
|
|
|
|
| ||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
C: Indoor unit
|
|
|
| a |
| b |
| c |
|
| d |
| ||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
|
|
| C |
| C |
|
|
|
|
|
|
| ||||||
|
|
|
|
| C |
|
|
|
| |||||||||
h |
|
|
|
| ||||||||||||||
|
|
|
|
|
|
|
|
|
| |||||||||
|
|
|
| |||||||||||||||
C | ||||||||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| ||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Fig.
A | 45°±2° | B | (inch) |
|
|
| |
° ±0.5° | øA |
|
|
90 |
|
|
|
AFlare cutting dimensions B Flare nut tightening torque
C
D
|
| Fig. |
|
| |||||
A (Fig. |
|
|
| (mm [inch]) |
|
| |||
|
|
|
|
|
| ||||
Copper pipe O.D. |
| Flare dimensions |
|
|
| ||||
|
| øA dimensions |
|
|
| ||||
ø6.35 [1/4] | 8.7 - 9.1 |
|
|
| |||||
ø9.52 [3/8] | 12.8 - 13.2 |
|
|
| |||||
ø12.7 [1/2] | 16.2 - 16.6 |
|
|
| |||||
ø15.88 [5/8] | 19.3 - 19.7 |
|
|
| |||||
B (Fig. |
|
|
|
|
|
|
|
|
|
|
|
|
|
| |||||
Copper pipe O.D. |
| Flare nut O.D. |
| Tightening torque | |||||
(mm [inch]) |
| (mm [inch]) |
| (N·m [ft·lbs]) | |||||
ø6.35 [1/4] | 17 [43/64] |
|
|
| 14 | - 18 | |||
ø6.35 [1/4] | 22 [7/8] |
|
|
| 34 | - 42 | |||
ø9.52 [3/8] | 22 [7/8] |
|
|
| 34 | - 42 | |||
ø12.7 [1/2] | 26 |
|
| 49 | - 61 | ||||
ø12.7 [1/2] | 29 |
|
| 68 | - 82 | ||||
ø15.88 [5/8] | 29 |
|
| 68 | - 82 | ||||
ø15.88 [5/8] | 36 |
|
| 100 | - 120 | ||||
|
|
| A |
|
| ||||
|
|
|
|
|
| A Die |
|
| |
|
|
|
|
|
|
|
| ||
|
|
|
|
|
|
|
| ||
|
|
|
|
|
|
|
| ||
|
|
|
|
|
|
|
| ||
|
|
|
|
|
| B Copper pipe | |||
|
|
|
|
|
|
A
B
Fig.
4.2. Connecting pipes (Fig. 4-2)
Fig.
•When commercially available copper pipes are used, wrap liquid and gas pipes with commercially available insulation materials
•The indoor parts of the drain pipe should be wrapped with polyethylene foam insu- lation materials (specific gravity of 0.03, thickness of 9 mm [23/64 inch] or more).
•Apply thin layer of refrigerant oil to pipe and joint seating surface before tightening flare nut. A
•Use two wrenches to tighten piping connections. B
•Use leak detector or soapy water to check for gas leaks after connections are com- pleted.
•Apply refrigerating machine oil over the entire flare seat surface. C
•Use the flare nuts for the following pipe size. D
|
|
|
| (mm [inch]) |
|
| Indoor unit | Outdoor unit | |
|
| P48 | ||
Gas side | Pipe size | ø12.7 [1/2] | ø15.88 [5/8] | ø15.88 [5/8] |
Liquid side | Pipe size | ø6.35 [3/8] | ø9.52 [3/8] | ø9.52 [3/8] |
•When bending the pipes, be careful not to break them. Bend radius of 100 mm [3- 15/16 inch] to 150 mm
•Make sure the pipes do not contact the compressor. Abnormal noise or vibration may result.
1Pipes must be connected starting from the indoor unit.
Flare nuts must be tightened with a torque wrench.
2Flare the liquid pipes and gas pipes and apply a thin layer of refrigeration oil (Applied on site).
•When usual pipe sealing is used, refer to Table 1 for flaring of R410A refrigerant pipes.
The size adjustment gauge can be used to confirm A measurements.
Table 1 (Fig.
Copper pipe O.D. | A (mm [inch]) |
(mm [inch]) | Clutch type |
ø6.35 [1/4] | 1.0 - 1.5 |
ø9.52 [3/8] | 1.0 - 1.5 |
ø12.7 [1/2] | 1.0 - 1.5 |
ø15.88 [5/8] | 1.0 - 1.5 |
6