Haier AU282FHAHA Service Manual page 6

1.4. Character of Products
1) The length of horizontal refrigerant pipe can be 35m,the total pipe length can reach
50m, the height difference between indoor units and outdoor unit can reach 30m, the
height drop between indoor units can be up to 10m. Refer to the figure below.
2) 1000m super far distance communication between indoor and outdoor units, convenient
control and easy to enlarge the scale of units assembly.
3) Indoor units can be controlled separately.
4) Equipped with computer-checking interface, conveniently for service work.
5) Far distance flow of refrigerant, and distribute refrigerant intelligently and reasonably
according to the needs of each room, high efficient and energy saving.
6) Display trouble code automatically.
7) Healthy negative ion generation function can refresh the air and excite the oxygen,it is optional.
Total length of piping (actual length)
Longest piping L
Piping length of indoor unit which is furthest to the first
branch piping L
Drop height between indoor and
outdoor unit H
Drop height between indoor units h
Commercial Air Conditioner
Outdoor unit
L
1
H up to 30mm
First branch piping
Length of the longest piping after the first
branch piping L
L
L
L
4
3
2
c
h
a g b
f
Indoor unit
Length of the longest piping L up to 50m
up to 35m
Permissible value
50m
Actual length 35m
15m
30m
Upper outdoor
20m
Lower outdoor
10m
- 5 -
Model: AU282FHAHA
d e
i
h up to 10m
Piping part
L +L +L +L +a+b+c+d+e
1 2 3 4
L +L +L +L +e
1 2 3 4
L +L +L +e
2 3 4