Caution About Outdoor Unit Installation - Hisense AVWT-408FHFSHA Installation Manual

5.3 Caution about Outdoor Unit Installation

Outdoor Unit Alignment
Taking three-module combination of outdoor unit as an example.
Align the outdoor unit from large capacity as A>B>C, and outdoor Unit "A" should be located at the indoor
unit side.
Outdoor Unit Capacity: A≥B≥C
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<32.8ft.(10m).
Outdoor Unit Capacity: A≥B≥C
Outdoor
Outdoor
Unit
Unit
B
A
Indoor Unit Side
LA
(2) Taking three-module combination of outdoor unit as an 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 a distance of
11-13/16in.(300mm)(max.) between the Manifold Pipe and the bottom of the outdoor unit. Also, provide the oil trap
(Min.7-7/8in.(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 6.6ft.(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 6.6ft.(2m)
Indoor Unit Side
Less than 6.6ft.(2m)
Outdoor
Outdoor
Unit
Unit
B
C
Keep the direct distance
Outdoor
of 19-11/16(500)mm or
Unit
more after the Manifold
C
Pipe
LB LC
Indoor Unit Side
* 6.6ft.(2m) or longer
Less than 6.6ft.(2m)
Outdoor Unit Capacity: A≥B≥C
Outdoor Outdoor
Unit
Unit
B
C
Outdoor
Outdoor
Unit
Unit
B
A
Manifold Pipe
Oil Trap
Min. 7-7/8(200)
Indoor Unit Side
Max.
11-11/13
(300)
Oil Trap
Min. 7-7/8(200)
Indoor Unit Side
Less than 6.6ft.(2m)
6.6ft.(2m)or longer
13
Outdoor
Unit
A
Indoor Unit Side
Outdoor
Unit
C
Max. lift difference
between outdoor
units is no more than
3-15/16in.(100mm)
Oil Trap
Oil Trap
Min. 7-7/8(200)
Min. 7-7/8(200)
Max. Max.
11-11/13
11-11/13
(300)
(300)
unit:in.(mm)
Oil Trap
Min. 7-7/8(200)
Less than 6.6ft.(2m)
6.6ft.(2m) or longer
unit: in.(mm)