BHF1357
Outdoor unit multi connection piping kit
4PW38477-1
Installation manual
8
5. A
FTER CONNECTION OF THE PIPING
Connection piping between the outdoor and indoor unit
All piping must be executed according to instructions in the
installation manual of the outdoor unit and an air tight test must be
performed after complete installation of the piping.
Insulation of joints
Step 1: Fit the insulation (1) around the reducer (2) and keep it in
place with tape (
) (3).
Step 2: Cut the insulation (5) along the slit (4). Fit the insulation
around the joint (6) and keep it in place with tape (
) (7) without
leaving a gap between the two insulated parts.
Step 3: Seal the seam between the insulation and the field piping
insulation (
) with tape (
) (8).
Step 4: Cover the insulated parts completely with tape (
) without
leaving any gaps (9).
I
N
CASE
OF
BOTTOM
PIPING
1. E
XTERIOR
2. I
NSTALLATION
OF
SUCTION
GAS
AND
HP/LP
GAS
PIPES
Cutting the field supplied and unit supplied gas pipes
■
For suction gas pipes only
For L dimension of suction gas pipe 1, dimension B of the field
supplied angled joint as in table 8 on page 4 has been taken into
account. Further, connection of gas pipes and the field supplied
joints for same diameter 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 joints for same diameter pipes have
stopppers, adjust the L dimension of suction gas pipes 1
accordingly.
Table 18 (for outdoor unit B)
1
Liquid accessory pipe (1) supplied with the outdoor unit
2
Liquid joint
3
Liquid reducer (1)
4
Liquid pipe (1) (field supply) (select the pipe length on site)
5
Joint (angle of 90°) (field supply) refer to table 12 on page 5
6
Equalizer pipe (2) (field supply) refer to table 17 on page 7
7
Equalizer pipe (1) (field supply) refer to table 17 on page 7
8
Liquid pipe (field supply) (select the pipe length on site)
9
Equalizer accessory pipe (1) supplied with the outdoor unit
10
Equalizer pipe (field supply) (select the pipe length on site)
11
Liquid accessory pipe (2) supplied with the outdoor unit
■
All required tape is field supply.
■
In case of indoor installation, make sure that the tape
is of the fireproof type in order to comply with local
regulations.
90
°
11
2
A
7
9
5
11
6
9
7
10
3 4
2
5 6
1
8
A
0
°±
15
view
1
2
5
3
2
1
4
3
4
6
8
7
9
8
1
Liquid pipe
3
Suction gas pipe
2
HP/LP gas pipe
4
Equalizer pipe
Outdoor
unit
Suction gas accessory pipe (2)
(delivered with the unit)
Suction gas pipe 1
(field supply)
B (mm)
L (mm)
18~22 Hp
0
(b)
137
24 Hp
41
98
26 Hp
0
(b)
137
28~32 Hp
41
98
a = cutting position
b = no cutting required
85
109
107
168
310
A
A
A
A
A
A
A
detail
A
A
A
B
49
4
4
4
4
4
B
a
L
