BHF1357
Outdoor unit multi connection piping kit
4PW38477-1
Installation manual
4
3. I
NSTALLATION
OF
SUCTION
GAS
AND
HP/LP
GAS
PIPES
Cutting the field supplied gas pipes
Use the following tables in case dimension A is 300 mm (refer to
"Dimensions for installation" on page 3
If dimension A exceeds 300 mm, extend the L dimension of the
suction gas pipes 1 and 2 and HP/LP gas pipes accordingly.
■
For suction gas pipes only
For L dimension of suction gas pipes 1 and 2, dimension B of
the field supplied angled joint as in table 8 on page 4 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
suction gas pipes 1 and 2 accordingly.
Table 7
Table 8
■
For HP/LP gas pipes only
For L dimension of HP/LP gas pipes 1, 2 and 3, dimension B of
the field supplied angled joint as in table 10 on page 4 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 HP/LP
gas pipes 1, 2 and 3 accordingly.
Table 9
Table 10
Cutting suction gas reducer (1) and HP/LP gas
reducer (2)
Connection piping
■
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).
■
See
"Dimensions for installation" on page 3
(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
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
in the figure below.
■
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)
18 Hp
61
238
20+22 Hp
135
238
24 Hp
135
234
26 Hp
135
238
28~32 Hp
135
234
Outdoor unit
Joint (angle of 90°) (field supply)
B (mm)
18~22 Hp
23
24 Hp
29
26 Hp
23
28~32 Hp
29
Outdoor unit
Pipe 1
L (mm)
Pipe 2
L (mm)
Pipe 3
L (mm)
18~24 Hp
50
245
59
26+28 Hp
80
245
59
30+32 Hp
80
239
47
Outdoor unit
Joint (angle of 90°) (field supply)
B (mm)
18~28 Hp
17
30+32 Hp
23
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
L
B
B
L
B
B
18 Hp
20~32 Hp
1
4
2
3
3
6
26~32 Hp
5
1
Suction gas accessory pipe (1) supplied with the outdoor unit
2
Suction gas pipe (1) (field supply) refer to table 7 on page 4
3
HP/LP gas accessory pipe (1) supplied with the outdoor unit
4
Suction gas joint
5
HP/LP gas joint
6
Suction gas reducer (1)
7
HP/LP gas reducer (1)
8
HP/LP gas reducer (2)
9
HP/LP gas pipe (1) (field supply) refer to table 9 on page 4
10
HP/LP gas pipe (field supply) (select the pipe length on site)
11
Suction gas pipe (field supply) (select the pipe length on site)
12
Joint (1) (angle of 90°) (field supply) refer to table 8 on page 4
13
HP/LP gas pipe (3) (field supply) refer to table 9 on page 4
14
Joint (2) (angle of 90°) (field supply) refer to table 10 on page 4
15
Suction gas pipe (2) (field supply) refer to table 7 on page 4
16
HP/LP gas pipe (2) (field supply) refer to table 9 on page 4
17
Suction gas accessory pipe (2) supplied with the outdoor unit
18
HP/LP gas accessory pipe (2) supplied with the outdoor unit
50
°
5
15
14 16
11
17 18
13
12
10
7 8
5
4
1
3
6
9
2
4
A
A
view
0
°±
15
0
°±
15
