Installation manual
7
BHF1357
Outdoor unit multi connection piping kit
4PW38477-1
Cutting suction gas reducer (1) and HP/LP gas reducer (2)
Connection piping
■
Connect the suction gas and HP/LP 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 joint and the
HP/LP reducer (1) and (2).
■
See
"Dimensions for installation" on page 6
(height) of the joint.
■
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
).
■
Connect the HP/LP gas reducer (1) by tilting it ±40° and connect
the HP/LP gas reducer (2), see view
A
in the figure below.
■
Refer to
"Pipe size selection and cutting position of the joint" on
for the cutting requirements.
4. I
NSTALLATION
OF
LIQUID
PIPES
AND
EQUALIZER
PIPES
Cutting the field supplied equalizer pipes
Use the following tables for standard installation (refer to
"Dimensions for installation" on page 6
If dimension differ from standard installation, adjust the L dimension
of the equalizer pipes 1 and 2 accordingly.
For L dimension of equalizer pipes 1 and 2, dimension B of the field
supplied angled joint as in table 12 on page 5 has been taken into
account. If dimension B of the angled joint you use is different from
that dimension B, adjust the L dimension of the equalizer pipes 1 and
2 accordingly.
Table 17
Cutting liquid reducer (1)
Connection piping
■
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).
■
Refer to
"Dimensions for installation" on page 6
■
Keep the joint in a horizontal position as shown in view A in the
figure below
■
Connect the liquid reducer (1) in an angle of ±90° and bend the
field supplied liquid pipe up to the stop valve as shown in the
figure.
■
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.
Suction gas
reducer (1)
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 HP/LP gas pipe 1
(field supply)
5
Connection to HP/LP gas
reducer (1)
6
No cutting for 18~24 Hp
1
HP/LP gas accessory pipe (1) supplied with the outdoor unit
2
Suction gas accessory pipe (1) supplied with the outdoor unit
3
HP/LP gas pipe (1) (field supply) refer to table 15 on page 6
4
Suction gas pipe (1) (field supply) refer to table 13 on page 6
5
Joint (1) (angle of 90°) (field supply) refer to table 14 on page 6
6
Joint (3) (angle of 90°) (field supply) refer to table 16 on page 6
7
HP/LP gas pipe (3) (field supply) refer to table 15 on page 6
8
Suction gas joint
9
Suction gas pipe (3) (field supply) refer to table 13 on page 6
10
HP/LP gas joint
11
Suction gas reducer (1)
12
HP/LP gas reducer (2)
13
HP/LP gas reducer (1)
14
Suction gas pipe (field supply) (select the pipe length on site)
15
HP/LP gas pipe (field supply) (select the pipe length on site)
16
Suction gas pipe (4) (field supply) refer to table 13 on page 6
17
Joint (2) (angle of 90°) (field supply) refer to table 14 on page 6
18
Joint (4) (angle of 90°) (field supply) refer to table 16 on page 6
19
HP/LP gas pipe (5) (field supply) refer to table 15 on page 6
20
HP/LP gas pipe (4) (field supply) refer to table 15 on page 6
21
Suction gas pipe (2) (field supply) refer to table 13 on page 6
22
HP/LP gas pipe (2) (field supply) refer to table 15 on page 6
23
Suction gas accessory pipe (2) supplied with the outdoor unit
24
HP/LP gas accessory pipe (2) supplied with the outdoor unit
18 Hp
20~32 Hp
1
4
2
3
3
6
26~32 Hp
5
40
°
24
18 20
8
10
23
22
21
19
18
17
16
18
15
14
11 12
8
17
1
2
3
4
5
13
9 10
7
6
A
A
0
°±
15
view
0
°±
15
Equalizer pipe
Pipe 1 (L mm) Pipe 2 (L mm)
95
120
1
Connection to liquid pipe (field supply)
2
Connection to liquid joint
3
Cutting position
4
No cutting for 18 Hp
L
20~32 Hp
1
2
3
4
