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BHFQ23P1357
Installation Manual
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Daikin BHFQ23P907, BHFQ23P1357 Installation Manual

INSTALLATION MANUAL
Outdoor unit multi connection piping kit
BHFQ23P907 BHFQ23P1357
(1)
■
■
■
■
■
BHFQ23P907 BHFQ23P1357
IMPROPER INSTALLATION OR ATTACHMENT OF EQUIPMENT OR ACCESSORIES COULD RESULT IN ELECTRIC SHOCK, SHORT­CIRCUIT, LEAKS, FIRE OR OTHER DAMAGE TO THE EQUIPMENT. BE SURE ONLY TO USE ACCESSORIES MADE BY DAIKIN WHICH ARE SPECIFICALLY DESIGNED FOR USE WITH THE EQUIPMENT AND HAVE THEM INSTALLED BY A PROFESSIONAL.
IF UNSURE OF INSTALLATION PROCEDURES OR USE, ALWAYS CONTACT YOUR DAIKIN DEALER FOR ADVICE AND INFORMATION.

This kit includes the following parts

Tab le 1
Kit
Suction gas
name
BHFQ23P907
(2)
BHFQ23P1357
joint
ID Ø31.8 ID Ø28.6
ID Ø25.4
ID Ø28.6
ID Ø25.4 ID Ø22.2 ID Ø19.1
1x 1x 1x 1x 1x 1x 1x 1x 1x 2x 1x
ID Ø38.1 ID Ø31.8
ID Ø25.4
ID Ø28.6 ID Ø31.8
1x 1x 1x 2x 1x 1x 2x 2x
ID Ø31.8 ID Ø28.6
HP/LP gas
joint
(1)
(2)
ID Ø22.2 ID Ø25.4 ID Ø28.6
ID Ø25.4
ID Ø28.6
ID Ø25.4 ID Ø22.2 ID Ø19.1
ID Ø31.8 ID Ø28.6
ID Ø25.4
ID Ø28.6
ID Ø25.4 ID Ø22.2 ID Ø19.1
ID Ø22.2 ID Ø25.4 ID Ø28.6
Liquid
(1)
(2)
joint
Outdoor unit multi connection piping kit
Shape
Equalizer
ID Ø22.2 ID Ø19.1
ID Ø15.9
ID Ø15.9
ID Ø12.7
ID Ø9.5
joint
—
Suction gas reducer HP/LP gas reducer
(1)
ID Ø19.1 ID Ø22.2
ID Ø25.4
ID Ø28.6
OD Ø25.4
(1)
ID Ø22.2 ID Ø19.1
ID Ø15.9
ID Ø15.9
ID Ø19.1
ID Ø19.1 ID Ø22.2
ID Ø25.4
ID Ø28.6
OD Ø25.4
(4)
ID Ø19.1 ID Ø15.9
ID Ø41.3
OD Ø38.1
(5)
(2)
(2)
ID Ø19.1 ID Ø22.2
ID Ø25.4
ID Ø28.6
OD Ø25.4
ID Ø28.6 ID Ø31.8
OD Ø31.8
ID Ø34.9
OD Ø31.8
(3)
(3)
ID Ø34.9
OD Ø31.8
ID Ø19.1 ID Ø22.2
ID Ø25.4
ID Ø28.6
OD Ø25.4
(1)
(1)
(3)
ID Ø25.4
OD Ø25.4
ID Ø25.4
OD Ø25.4
ID Ø22 ID Ø26
ID Ø28
OD Ø26
Installation manual
Liquid
reducer
(2)
(2)
ID Ø19.1 ID Ø22.2
OD Ø25.4
ID Ø19.1 ID Ø22.2
OD Ø25.4
(1)
(1)
ID Ø9.5 ID Ø12.7
OD Ø15.9
ID Ø9.5 ID Ø12.7
OD Ø15.9
Insulation
(a)
Gas
Liquid
ID Ø25.4
ID Ø28.6
ID Ø25.4 ID Ø22.2 ID Ø19.1
ID Ø25.4
ID Ø28.6
ID Ø25.4 ID Ø22.2 ID Ø19.1
1x 1x 1x 1x 1x 3x 1x 2x 4x 2x
(a) For both suction gas pipes and HP/LP gas pipes
NOTE
Do not throw away any of the accessories until installation is completed. Be sure to read this manual before installation and follow the instructions carefully when performing installation. For installation of the outdoor units, refer to the installation manual of the outdoor unit. The installation of refrigerant pipes between outdoor and indoor units needs to be arranged by refnet joints and refnet
headers, and is to be purchased separately. For combination of outdoor units follow Engineering Data.

Field supply parts

Tab le 2
Quantity
Parts
Insulation for pipes
Connection pipes
1 set
1
ID Ø15.9
ID Ø12.7
ID Ø9.5
Selection procedure907 1357
See "Pipe size selection and
cutting position of the joint" on page 3 and on page 10.
Quantity
Parts
Suction gas pipes 1x 1x
Joint (angle
HP/LP gas pipes 2x 2x
of 90°)
Equalizer pipes 4x 5x
Selection procedure907 1357
The joint size must be the same as the gas pipe size of the outermost outdoor unit. Refer to “Pipe size selection and cutting position of the joint” on page 3 and page 10.
Tape 1 set For insulation.
Outdoor unit multi connection piping kit
BHFQ23P907+1357
4PW38477-1
Temper grade
O type 1/2H type
Pipe Ø
6.4 9.5 12.7 15.9
19.1 22.2 25.4 28.6 31.8 34.9 38.1 41.3
Minimum thickness t (mm)
0.80 0.80 0.80 1.00 1.00 1.00 1.00 1.00 1.10 1.21 1.32 1.43
O = Annealed 1/2H = Half hard
■
■
■
■
■
■
■
1
2
3
■
■
■

Selection procedure

Tab le 3
Number of outdoor units Kit name
2 units BHFQ23P907 3 units BHFQ23P1357
The quantity and selection procedure for use of joints with an angle of 90° only apply to front connection installations.
For lower front connection and bottom connection installations, the quantity and selection procedure are different. Please refer to the dedicated instructions.
Joints for pipes with the same diameter are only needed for bottom connection installations. See dedicated instructions for quantities and specifications.
ESTRICTIONS
R
MULTI
CONNECTION
Install the joints horizontally, so that the caution label (1) attached to the joint comes to the top. Do not tilt the joint more than ±15° (see view A ).
ON
INSTALLING
PIPING
view
±15
0°
A
1
KIT
THE
When installing the multi outdoor system, connect the units as shown in the figure below. If installed in a different order, the outdoor unit multi connection piping kit may not fit properly and some additional field supplied pipe size reducers may be required.
Outdoor unit multi
connection piping kit type:
Unit capacity :
To indoor unit Outdoor unit multi connection piping kit (first branch) Outdoor unit multi connection piping kit (second branch)
If the total capacity of the connected indoor units exceeds the total capacity of the outdoor units, cooling and heating performance may be reduced when running the indoor units. Refer to the capacity table in the Engineering Data Book for more details.
Use piping with temper grade in function of the pipe diameter as listed in the table below.
The pipe thickness of the refrigerant piping must comply with relevant local and national regulations. The minimum pipe thickness for R410A piping must be in accordance with the table below (for design pressure of 4.0 MPa (40 bar)).
BHFQ23P907 BHFQ23P1357
A≥BA≥B≥C
AB
1 2
AB
1 2
3
C
Do not install the joint vertically (see view B ).
view
B
1
Make sure that the total length of the piping connected to the joint is absolute straight for more than 500 mm. Only if a straight field piping of more than 120 mm is connected, more than 500 mm of straight section can be ensured.
>120 m
m
>500 m
m
Improper installation may lead to malfunction of the outdoor unit.
BHFQ23P907+1357
Outdoor unit multi connection piping kit
4PW38477-1
2
OR
F
Pipe size selection and cutting position of the joint
Select the correct pipe size according the tables below and cut the joints and reducers on the correct cutting point with a pipe cutter.
BHFQ23P907
Refer to the installation manual of the outdoor unit for selection and restrictions for the piping between outdoor branches. Not observing restrictions on the interconnecting piping may result in malfunctioning of the unit.
N
I
1. E
■
CASE
XTERIOR
■
■
OF
■
FRONT
PIPING
1
4
2
5
3
A
1
2
3
4
5
AA BB
1 23 4
Tab le 4
Select the pipe size in function of the total capacity of the outdoor unit.
Total capacity of outdoor units
18 Hp Ø28.6x1.0 (1/2H) Ø22.2x1.0 (1/2H) Ø15.9x1.0 (O) 20~22 Hp Ø28.6x1.0 (1/2H) Ø28.6x1.0 (1/2H) Ø15.9x1.0 (O) 24 Hp Ø34.9x1.21 (1/2H) Ø28.6x1.0 (1/2H) Ø15.9x1.0 (O) 26~32 Hp Ø34.9x1.21 (1/2H) Ø28.6x1.0 (1/2H) Ø19.1x1.0 (1/2H)
(a) OD x minimum wall thickness (temper grade type)
When upsizing the main pipe, use gas reducer (3). 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.
Upsizing main pipe
For units with total capacity of 24~32 Hp, the suction gas reducer (3) has to be used. Connect the reducer to the suction gas joint as shown in the figure below.
24~32 Hp
Tab le 5
Total capacity of outdoor units
18 Hp Ø22.2x1.0 (1/2H) Ø19.1x1.0 (1/2H) Ø9.5x0.80 (O) 20~24 Hp Ø28.6x1.0 (1/2H) Ø19.1x1.0 (1/2H) Ø12.7x0.80 (O) 26~32 Hp Ø28.6x1.0 (1/2H) Ø22.2x1.0 (1/2H) Ø12.7x0.80 (O)
(a) OD x minimum wall thickness (temper grade type)
Tab le 6
Total capacity of outdoor units
18 ~22 Hp Ø22.2x1.0 (1/2H) Ø19.1x1.0 (1/2H) Ø9.5x0.80 (O) 24+28 Hp Ø28.6x1.0 (1/2H) Ø19.1x1.0 (1/2H) Ø12.7x0.80 (O) 26 Hp Ø22.2x1.0 (1/2H) Ø19.1x1.0 (1/2H) Ø9.5x0.80 (O) 30+32 Hp Ø28.6x1.0 (1/2H) Ø22.2x1.0 (1/2H) Ø12.7x0.80 (O)
(a) OD x minimum wall thickness (temper grade type)
Cut the pipe with a pipe cutter.
Suction gas HP/LP gas Liquid
Suction gas HP/LP gas Liquid
Suction gas HP/LP gas Liquid
1 Main pipe, see table 4 on page 3 2 Joint (refer to "Restrictions on
installing the multi connection piping kit" on page 2)
3 Pipe between joint and the outdoor
unit A, see table 5 on page 3
4 Pipe between joint and the outdoor
unit B, see table 6 on page 3
(a)
Pipe size
(a)
Pipe size
(a)
Pipe size
1
2
3 4
5
2. D
198
NOTE
BB
BB
Liquid joint To indoor unit Suction gas joint
IMENSIONS
To p view Front view
detail
181
148
152
300 mm (standard) Liquid pipe Suction gas pipe HP/LP gas pipe Equalizer pipe Bottom frame
In case dimension A exceeds 300 mm, extend the field supplied interconnection piping between the joint and the outdoor unit.
FOR
INSTALLATION
B B
B
12 3 4
HP/LP gas joint Equalizer pipe
5
58 152 211
283
105
181
63
12 3
3
≥15
1 Joint or reducer 2 Cut in order to have a
fitting depth of ≥15 mm
3 Field pipe
Outdoor unit multi connection piping kit
BHFQ23P907+1357
4PW38477-1
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.
Tab le 7
Pipe 1
Outdoor unit
18 Hp 61 238 20+22 Hp 135 238 24 Hp 135 234 26 Hp 135 238 28~32 Hp 135 234
L (mm)
Tab le 8
Joint (angle of 90°) (field supply)
Outdoor unit
18~22 Hp 23 24 Hp 29 26 Hp 23 28~32 Hp 29
B (mm)
■ 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.
Tab le 9
Pipe 1
Outdoor unit
18~24 Hp 50 245 59
26+28 Hp 80 245 59
30+32 Hp 80 239 47
L (mm)
Pipe 2
L (mm)
Tab le 10
Joint (angle of 90°) (field supply)
Outdoor unit
18~28 Hp 17
B (mm)
Pipe 2
L (mm)
B
B
B
Pipe 3
L (mm)
L
L
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 for the location (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
page 3 for the cutting requirements.
4
±15
view
50°
0°
5
A
±15
0°
A
1 2
9
7 854
6
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
3
15
14 1611 17 18131210
30+32 Hp 23
B
Cutting suction gas reducer (1) and HP/LP gas reducer (2)
Suction gas
reducer (1)
14
18 Hp
20~32 Hp
2
BHFQ23P907+1357
Outdoor unit multi connection piping kit
4PW38477-1
HP/LP gas reducer (2)
6
33
26~32 Hp
5
1 Connection to suction gas
2 Connection to suction gas joint 3 Cutting position 4 Connection to HP/LP gas pipe 1
5 Connection to HP/LP gas
6 No cutting for 18~24 Hp
pipe 1 (field supply)
(field supply)
reducer (1)
4
4. INSTALLATION OF LIQUID PIPES AND
8 3611 7
40°
10 4
9
8
10
54 6 7
2
1
3
0°
±15
A
A
view
3
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.
Tab le 11 Table 12
Equalizer pipe Joint (angle of 90°)
Pipe 1 (L mm) Pipe 2 (L mm) B (mm)
95 60 17
L
Cutting liquid reducer (1)
1 Connection to liquid pipe (field supply)
1
4
2 Connection to liquid joint
20~32 Hp
3 Cutting position
3
2
4 No cutting for 18 Hp
B
B
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
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
page 3 for the cutting requirements.

5. AFTER 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
12
4
3
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).
■ 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.
5
7
8
6
321 4
5
Outdoor unit multi connection piping kit
BHFQ23P907+1357
4PW38477-1
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