Installation manual
5
BHF1357
Outdoor unit multi connection piping kit
4PW38477-1
4. I
NSTALLATION
OF
LIQUID
PIPES
AND
EQUALIZER
PIPES
Cutting the field supplied equalizer 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
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 11
Table 12
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 3
■
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 40° and bend the
field supplied liquid pipe up to the stop valve as shown in the
figure, see view A 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.
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: Fit the insulation (4) around the joint (5) and keep it in place
with tape (
) (6) without leaving a gap between the two insulated
parts.
Step 3: Seal the seam between the insulation and the field piping
insulation (
) with tape (
) (7).
Step 4: Cover the insulated parts completely with tape (
) without
leaving any gaps (8).
Equalizer pipe
Joint (angle of 90°)
Pipe 1 (L mm) Pipe 2 (L mm)
B (mm)
95
60
17
1
Connection to liquid pipe (field supply)
2
Connection to liquid joint
3
Cutting position
4
No cutting for 18 Hp
L
B
B
20~32 Hp
1
2
3
4
1
Liquid accessory pipe (1) supplied with the outdoor unit
2
Liquid pipe (1) (field supply) (select the pipe length on site)
3
Equalizer accessory pipe (1) supplied with the outdoor unit
4
Liquid joint
5
Liquid reducer (1)
6
Joint (angle of 90°) (field supply) refer to table 12 on page 5
7
Equalizer pipe (2) (field supply) refer to table 11 on page 5
8
Equalizer pipe (1) (field supply) refer to table 11 on page 5
9
Liquid pipe (field supply) (select the pipe length on site)
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.
8
3
6
11
7
40
°
10
4
9
8
10
5
4
6
7
2
1
3
0
°±
15
A
A
view
1
2
3
5
6
7
8
4
3
2
1
4
3
