BHF1357
Outdoor unit multi connection piping kit
4PW38477-1
Installation manual
10
4. 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).
F
OR
BHFQ23P1357
Pipe size selection and cutting position of joints.
Select the correct pipe size according with the tables below and cut
the joints and reducers on the correct places with a pipe cutter.
■
Main pipe
Select the pipe size in function of the total capacity of the
outdoor unit (units A+B+C).
■
Connection inbetween connection joints
Select the pipe size in function of the total capacity of the
outdoor units to be connected upstream (units B+C).
Table 20
■
When using pipes of Ø19.1 or larger, make sure to use pipes
with 1/2H temper grade with a wall thickness of 1.0 mm. In case
there is no alternative and you use the O temper grade for pipes
with Ø19.1, a minimal wall thickness of 1.2 mm or more is
required and connections need to be brazed.
Table 21
Table 22
Table 23
1
Liquid joint
2
Liquid accessory pipe (1) supplied with the outdoor unit
3
Liquid pipe (1) (field supply) (select the pipe length on site)
4
Equalizer accessory pipe (1) supplied with the outdoor unit
5
Joint (angle of 90°) (field supply) refer to table 12 on page 5
6
Liquid reducer (1)
7
Liquid pipe (2) (field supply) (select the pipe length on site)
8
Equalizer pipe (field supply)(select the pipe length on site)
9
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.
1
4
5
4
9
8
7
6
5
2
3 4
1
view
0
°±
15
A
A
1
2
5
3
2
1
4
3
4
6
8
7
9
8
Refer to the installation manual of the outdoor unit for
selection and restriction for the piping between outdoor
branches. Not observing restrictions on the interconnecting
piping may result in malfunctioning of the unit.
Total
capacity
outdoor
units
Pipe size
(a)
(a) OD x minimum wall thickness (temper grade type)
Suction gas
HP/LP gas
Liquid
34 Hp
Ø34.9x1.21 (1/2H)
Ø28.6x1.0 (1/2H)
Ø19.1x1.0 (1/2H)
36 Hp
Ø41.3x1.43 (1/2H)
Ø28.6x1.0 (1/2H)
Ø19.1x1.0 (1/2H)
38~48 Hp
Ø41.3x1.43 (1/2H)
Ø34.9x1.21 (1/2H)
Ø19.1x1.0 (1/2H)
Outdoor
unit
Pipe size
(a)
(a) OD x minimum wall thickness (temper grade type)
Suction gas
HP/LP gas
Liquid
34~48 Hp
Ø28.6x1.0 (1/2H)
Ø22.2x1.0 (1/2H)
Ø12.7x0.80 (O)
Outdoor
unit
Pipe size
(a)
(a) OD x minimum wall thickness (temper grade type)
Suction gas
HP/LP gas
Liquid
34 Hp
Ø22.2x1.0 (1/2H)
Ø19.1x1.0 (1/2H)
Ø9.5x0.80 (O)
36~40 Hp
Ø28.6x1.0 (1/2H)
Ø19.1x1.0 (1/2H)
Ø12.7x0.80 (O)
42~48 Hp
Ø28.6x1.0 (1/2H)
Ø22.2x1.0 (1/2H)
Ø12.7x0.80 (O)
Outdoor
unit
Pipe size
(a)
(a) OD x minimum wall thickness (temper grade type)
Suction gas
HP/LP gas
Liquid
34~38 Hp
Ø22.2x1.0 (1/2H)
Ø19.1x1.0 (1/2H)
Ø9.5x0.80 (O)
42 Hp
Ø22.2x1.0 (1/2H)
Ø19.1x1.0 (1/2H)
Ø9.5x0.80 (O)
40+44 Hp
Ø28.6x1.0 (1/2H)
Ø19.1x1.0 (1/2H)
Ø12.7x0.80 (O)
46+48 Hp
Ø28.6x1.0 (1/2H)
Ø22.2x1.0 (1/2H)
Ø12.7x0.80 (O)
1
2
4
2
5
3
6
A
B
C
1
Main pipe, see table 20 on page 10
2
First joint (refer to
installing the multi connection
piping kit" on page 2
3
Pipe between the first joint and
outdoor unit A, see table 21 on
page 10
4
Piping inbetween connection joints
5
Pipe between the second joint and
outdoor unit B, see table 22 on
page 10
6
Pipe between the second jount and
outdoor unit C, see table 23 on
page 10
