Installation manual
9
BHF1357
Outdoor unit multi connection piping kit
4PW38477-1
■
For HP/LP gas pipes only
For L dimension of HP/LP gas pipes 1~3, dimension B of the
field supplied angled joint as in table 10 on page 4 has been
taken into account. Further, connection of gas pipes and the
field supplied straight size joints are of the type without stoppers.
If dimension B of the angled joint you use is different from that
dimension B and/or if the straight size joints have stopppers,
adjust the L dimension of HP/LP gas pipes 1~3 accordingly.
Table 19
Cutting suction gas reducer (1) and (2) and HP/LP gas
reducer (2)
Connection piping
■
Remove the knockout plate on the bottom frame. Refer to the
installation manual delivered with the outdoor unit.
■
Connect the suction gas and HP/LP gas pipes as shown in the
figure below.
Before connecting the pipes, first connect the suction gas joint
and the suction gas reducer (1), the HP/LP gas joint and the
HP/LP gas reducers (1) and (2).
■
Refer to the installation manual delivered with the outdoor unit for
cautions on brazing pipes.
■
Keep the joint in a horizontal position, see view
A
in the figure
below.
■
Connect the HP/LP gas reducer (1) by tilting it ±50° and connect
the HP/LP gas reducer (2) (see view
A
).
■
Refer to
"Pipe size selection and cutting position of the joint" on
for the cutting requirements.
3. I
NSTALLATION
OF
LIQUID
PIPES
AND
EQUALIZER
PIPES
Cutting liquid reducer (1)
Connection piping
■
Remove the knockout plate on the bottom frame. Refer to the
installation manual delivered with the outdoor unit.
■
Connect the liquid pipes and equalizer pipes as shown in the
figure below.
Before connecting the pipes, first connect the liquid joint and the
liquid reducer (1).
■
Keep the joint in a horizontal position, see view
A
in the figure
below.
■
Bend the field supplied liquid pipe up to the stop valve as shown
in the figure below.
■
Refer to the installation manual delivered with the outdoor unit
for cautions on brazing pipes.
■
Refer to
"Pipe size selection and cutting position of the joint" on
for the cutting requirements.
Outdoor unit
Pipe 1
L (mm)
Pipe 2
L (mm)
Pipe 3
L (mm)
(field supply) (field supply) (field supply)
18~28 Hp
155
86
94
30+32 Hp
119
110
82
Suction gas
reducer (1)
Suction gas
reducer (2)
HP/LP gas
reducer (2)
1
Connection to suction
gas pipe 1 (field supply)
2
Connection to suction
gas joint
3
Cutting position
4
Connection to suction
gas pipe (field supply)
5
Connection to HP/LP gas
pipe 1 (field supply)
6
Connection to HP/LP gas
reducer (1)
7
No cutting for 18~24 Hp
L
18 Hp
20~32 Hp
1
4
5
2
3
3
7
26~32 Hp
6
18~22+26 Hp
24+28~32 Hp
3
2
1
Suction gas accessory pipe (1) supplied with the outdoor unit
2
HP/LP gas joint
3
Suction gas joint
4
Suction gas reducer (1)
5
HP/LP gas reducer (2)
6
Suction gas reducer (2)
7
HP/LP gas reducer (1)
8
Joint (4) (angle of 90°) (field supply) refer to table 10 on page 4
9
HP/LP gas accessory pipe (1) supplied with the outdoor unit
10
HP/LP gas pipe (2) (field supply) refer to table 19 on page 9
11
HP/LP gas pipe (3) (field supply) refer to table 19 on page 9
12
Suction gas pipe (field supply) (select the pipe length on site)
13
HP/LP gas pipe (field supply) (select the pipe length on site)
14
Suction gas accessory pipe (2) supplied with the outdoor unit refer to
table 19 on page 9
15
Suction gas pipe (1) (field supply) refer to table 18 on page 8
16
Joint (2) (angle of 90°) (field supply) refer to table 8 on page 4
17
HP/LP gas pipe (1) (field supply) refer to table 19 on page 9
18
Straight size joint (field supply)
19
HP/LP gas accessory pipe (2) supplied with the outdoor unit
1
Connection to liquid pipe (field supply)
2
Connection to liquid joint
3
Cutting position
4
No cutting for 18 Hp
A
3
2
view
A
16
13
8 17
18
19
15
14
12
8
7
6
4
3
10
2
5
1
9
8 11
50
°
0
°±
15
0
°±
15
20~32 Hp
1
2
3
4
