5
Technical Information
When the outdoor unit is totally surrounded by walls, the installation space of the unit should be as required in Fig.1.
Fig.1
2
.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.
Model
Connecting Pipe(inch)
Max. Pipe length(ft )
Max. Height Diff erence betw een
Indoor Unit andOutdoor Unit ( ft )
AWHD(30)ND3EO
Liquid
Gas
229.62
When the outdoor unit is above
maximum height difference between
indoor and outdoor units is up to
49.2ft; When the indoor unit is
above,maximum height difference
between indoor and outdoor units is up
to 49.2ft.
Ф
1/4
Ф
3/8
AWHD(36)ND3EO
Ф
1/4
Ф
3/8
246.1
AWHD(42)ND3EO
Ф
1/4
Ф
3/8
246.1
Note:
1. Use water-proof insulating pipe.
2. Wall thickness of pipe: 0.5-1.0 mm; bearing pressure: 3.0MPa
3. The longer the connection pipe is, the more cooling and heating capacity will decrease.
22
Installation and Maintenance
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.
Note:
①
Use water-proof insulating pipe.
②
Wall thickness of pipe: 0.5-1.0 mm;bearing pressure: 3.0MPa
③
The longer the connection pipe is, the more cooling and heating capacity will decrease.
＞
19 2/3
＞
39 3/8
＞
78 3/4
＞
19 2/3
＞
19 2/3
＞
19 2/3
＞
78 3/4
unit:inch
M odel
Connecting Pipe (inch)
M ax. Pipe length(ft
)
M ax. Height Dif f erence betw een
I ndoor Unit and Outdoor Unit ( ft )
Liqu id
Gas
GW HD(30) ND3E O
Ф 1/4
3/8
3/8
3/8
1/4
1/4
Φ
229.6
GW HD(36) ND3E O
Ф
Ф
246.1
246.1
GW HD(42) ND3E O
Ф
Ф
When the outdoor unit is above maximum
height difference between indoor and
outdoor units is up to 49.2ft; When the indoor
unit is above,maximum height difference
between indoor and outdoor units is up to
49.2ft.
Fig.1
