Installation manual
17
BHF1357
Outdoor unit multi connection piping kit
4PW38477-1
Connection piping
■
Remove the knockout plate on the bottom frame. Refer to the
installation manual delivered with the outdoor unit.
■
Connect the suction gas pipes 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 joints." 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 view A in the figure below.
■
Refer to the installation manual delivered with the outdoor unit for
cautions on brazing pipes.
4. A
FTER
CONNECTION
OF
THE
PIPING
Follow the instructions on
"After connection of the piping" on
1
HP/LP gas joint (1)
2
Suction gas joint (1)
3
Suction gas reducer (1)
4
HP/LP gas reducer (2)
5
Suction gas pipe (field supply) (select the pipe length on site)
6
Suction gas accessory pipe (1) supplied with the outdoor unit
7
HP/LP gas accessory pipe (1) supplied with the outdoor unit
8
HP/LP gas reducer (1)
9
Suction gas reducer (2)
10
HP/LP gas pipe (field supply) (select the pipe length on site)
11
HP/LP gas reducer (3)
12
HP/LP gas joint (2)
13
Suction gas joint (2)
14
Suction gas accessory pipe (2) supplied with the outdoor unit
15
HP/LP gas accessory pipe (2) supplied with the outdoor unit
16
HP/LP gas pipe (2) (field supply) refer to table 36 on page 16
17
Joint (6) (angle of 90°) (field supply) refer to table 33 on page 14
18
Suction gas reducer (3)
19
HP/LP gas pipe (3) (field supply) refer to table 36 on page 16
20
Suction gas accessory pipe (3) supplied with the outdoor unit refer
to table 35 on page 16
21
Suction gas pipe (1) (field supply) refer to table 35 on page 16
22
Joint (3) (angle of 90°) (field supply) refer to table 31 on page 14
23
HP/LP gas accessory pipe (3) supplied with the outdoor unit
24
Straight size joint (field supply)
25
HP/LP gas pipe (1) (field supply) refer to table 36 on page 16
A
2
1
view
A
10
5
18
3 4 19
17
22
13
11
24
23
25
20 21
17
16
15
14
50
°
8
12
9
7
6
8
10
3 4 5
2
1
0
°±
15
0
°±
15
Liquid reducer (1)
Unit A
Liquid reducer (1)
Unit B
1
Connection to liquid pipe (1)
(field supply)
2
Connection to liquid joint (1)
3
Cutting position
4
Connection to liquid joint (2)
5
No cutting for 34 Hp
1
Liquid joint (1)
2
Liquid pipe (1) (field supply) (select the pipe length on site)
3
Liquid reducer (1)
4
Joint (angle of 90°) (field supply) refer to table 29 on page 12
5
Liquid pipe (2) (field supply) (select the pipe length on site)
6
Liquid accessory pipe (1) supplied with the outdoor unit
7
Equalizer accessory pipe (1) supplied with the outdoor unit
8
Equalizer pipe (field supply) (select the pipe length on site)
9
Liquid joint (2)
10
Equalizer joint
11
Liquid accessory pipe (2) supplied with the outdoor unit
12
Liquid pipe (3) (field supply) (select the pipe length on site)
13
Liquid accessory pipe (3) supplied with the outdoor unit
34~48 Hp
1
2
3
36~48 Hp
1
4
3
5
A
1
7
4
7
10
3
2
8
8
9
13
12
7
11
4
3
2
5
1
7
6
A
view
0
°±
15
