Gree Multi+ Ultra MULTIU18HP230V1DO Service & Parts Manual page 25

Service Manual
When the outdoor unit is totally surrounded by walls, the installation space of the unit should be as required in
Fig.1.
8.1.3 Piping Connection
The maximum pipe length is shown in the following table. When the distance between units (piping length) is out of the range listed below,
normal run of the unit can not be guaranteed.
M odel
18K
24K
36K
42K
Note:
Use water-proof insulating pipe.
①
Wall thickness of pipe: 0.5-1.0 mm;bearing pressure: 3.0MPa
②
The longer the connection pipe is, the more cooling and heating capacity will decrease.
③
Installation and Maintenance
＞ 19 2/3
＞78 3/4
Fig.1
Connecting Pipe ( inch )
M ax. Pipe lengt h( ft
L iqu id Gas
Ф 1/4 Φ 3/8
Ф 1/4 Φ 3/8
Ф 1/4 Ф 3/8
Ф 1/4 Ф 3/8
＞39 3/8
＞78 3/4
＞ 19 2/3
unit:inch
M ax. Height D if f erence betw een
)
I ndoor Un it and Outdoor Un it ( ft )
164 When the outdoor unit is above maximum
height difference between indoor and
229.6
outdoor units is up to 49.2ft; When the indoor
unit is above,maximum height difference
246.1
between indoor and outdoor units is up to
49.2ft.
246.1
23