Caution About Outdoor Unit Installation - Hisense AVWT-76FKFSHA Technical Handbook

4.3 Caution about Outdoor Unit Installation

Outdoor Unit Alignment
Taking four-module combination of outdoor unit for example.
Align the outdoor unit from large capacity as A>B>C>D, and outdoor Unit "A" should be located at the
indoor unit side.
Outdoor Unit Capacity: A≥B≥C≥D
Outdoor
Unit
A
Indoor Unit Side
Piping Work between Outdoor Units
(1) Piping Length between Manifold Pipe (at outdoor unit side) and outdoor unit should be LA<LB<LC<LD<10m.
Outdoor Unit Capacity: A≥B≥C≥D
Outdoor
Outdoor
Unit Unit
B
A
Indoor Unit Side
LA
(2) Taking three-module combination of outdoor unit for example.
Place the Manifold Pipe lower than the outdoor unit piping connection.
In case that the Manifold Pipe is placed higher than the outdoor unit piping connection, keep 300mm(max.)
between the Manifold Pipe and the bottom of the outdoor unit. Also, provide the oil trap(Min.200mm) between the
Manifold Pipe and the bottom of the outdoor unit.
Indoor Unit Side
Indoor Unit Side
(3) In case the piping length between the outdoor is 2m or more, the oil trap should be provided for the gas pipe so
that the accumulation of the refrigerant may not occur.
* Less than 2m
Indoor Unit Side
Less than 2m
Outdoor
Outdoor
Outdoor
Unit
Unit
Unit
B
C D
Outdoor
Outdoor
Keep the direct distance of
Unit
Unit
500mm or more after the
C D
Manifold Pipe
LB LC LD
Indoor Unit Side
Less than 2m
Outdoor Unit Capacity: A≥B≥C≥D
Outdoor Outdoor
Unit
Unit
C
D
Outdoor
Outdoor
Unit
Unit
A
Manifold Pipe
Oil Trap
Min. 200mm
Indoor Unit Side
Max.
300mm
* 2m or longer
Oil Trap
Min. 200mm
Indoor Unit Side
Less than 2m
2m or longer
545
Outdoor Outdoor
Unit
Unit
B
A
Outdoor Outdoor
Unit Unit
D
C
B
Oil Trap
Oil Trap
Min. 200mm Min. 200mm
Max.
Max.
300mm 300mm
Oil Trap
Min. 200mm
Less than 2m
2m or longer
Indoor Unit Side
Max. lift difference
between outdoor units is
not more than 100mm