Example of connection
SiBE37-701_B
447
Appendix
Outdoor unit multi connection piping kit and
Refrigerant branch kit selection
• Refrigerant branch kits can only be used with R410A.
• When multi outdoor system are installed, be sure to use the
special separately sold Outdoor unit multi connection piping
kit. (BHFP26P90 · 136).
(For how to select the proper kit, follow the table at right.)
• Never use BHFP26M90 · 135, BHFP22M90 · 135P for M
type of this series or T joint (field supplied).
Example for indoor units
connected downstream
Pipe size selection
The thickness of the pipes in the table shows
the requirements of Japanese High Pressure
Gas Control low. (As of Jan. 2003)
The thickness and material shall be selected in
accordance with local code.
<In case of single outdoor unit system>
Outdoor unit
Piping between outdoor unit and
refrigerant branch kit (part A)
<In case of multi outdoor unit system>
Independent
unit 1
Independent
unit 2
Independent
unit 3
Equalizer pipe
(part D)
Piping between outdoor unit
multi connection piping kit
and outdoor unit (part C)
Piping between outdoor unit multi
connection piping kits (part B)
Piping between outdoor unit and
refrigerant branch kits (part A)
How to select the REFNET joint
• When using REFNET joint at the first branch counted from the outdoor unit side,
choose from the following table in accordance with the outdoor unit capacity type.
(Example : REFNET joint A)
• Choose the REFNET joints other than the first branch from the following table in accordance
with the total capacity index of all the indoor units connected below the REFNET joint.
Outdoor unit capacity type
Refrigerant branch kit name
8,10HP type
KHRP25A33T
12~22HP type
KHRKHRP25M72TP
24HP type ~
KHRKHRP25M73TP
Indoor unit total capacity index
Refrigerant branch kit name
3 pipes
2 pipes
x < 200
KHRP25A22T
KHRP26A22T
200
≤
x < 290
KHRP25A33T
KHRP26A33T
290
≤
x < 640
KHRKHRP25M72TP KHRP26A72T
640
≤
x
KHRKHRP25M73TP
—
How to select the REFNET header
• Choose from the following table in accordance with the total capacity index of
all the indoor units connected below the REFNET header.
• 250 type indoor unit can not be connected below the REFNET header.
How to select the outdoor unit multi connection piping kit
(This is required when the system is multi outdoor unit system.)
•
Choose from the following table in accordance with the number of outdoor units.
Indoor unit total capacity index
Refrigerant branch kit name
3 pipes
2 pipes
x < 200
KHRP25M33H
KHRP26M22H or KHRP26M33H
200
≤
x < 290
KHRP26M33H
290
≤
x < 640
KHRKHRP25M72HP
KHRP26M72H
640
≤
x
KHRKHRP25M73HP
KHRKHRP26M73HP
Number of outdoor unit
Connecting piping kit name
2 units
BHFP26P90
3 units
BHFP26P136
Example REFNET joint C : Indoor units 5 + 6 + 7 + 8
Example REFNET joint B : Indoor units
7 + 8
Example REFNET header : Indoor units 1 + 2 + 3 + 4 +
5 + 6
Example REFNET header :
Indoor units 1 + 2 + 3 + 4 + 5 + 6 +
7 +
8
Piping between outdoor unit (*2) and refrigerant branch kit (part A)
• Choose from the following table in accordance with the outdoor unit system capacity type.
Piping between outdoor unit multi connection piping kits (part B)
• Choose from the following table in accordance with the total capacity of
all the outdoor units connected upstream.
(unit : mm)
Piping between outdoor unit multi connection piping kit and outdoor unit (part C)
•
Choose from the following table in accordance with the capacity
type of the outdoor unit connected.
(unit : mm)
Outdoor unit
capacity type
Piping size (O. D.)
Suction gas pipe HP/LP gas pipe
Liquid pipe
8HP type
φ
19.1
φ
15.9
φ
9.5
10HP type
φ
22.2
φ
19.1
12HP type
φ
28.6
φ
12.7
14,16HP type
φ
22.2
18HP type
φ
15.9
20,22HP type
φ
28.6
24HP type
φ
34.9
26~34HP type
φ
19.1
36HP type
φ
41.3
38~48HP type
φ
34.9
Outdoor unit
capacity type
Piping size (O. D.)
Suction gas pipe HP/LP gas pipe
Liquid pipe
8,10HP type
φ
22.2
φ
19.1
φ
9.5 × 0.8
12HP type
φ
28.6
φ
12.7
14,16HP type
φ
22.2
Piping between refrigerant branch kits
Piping between refrigerant branch kit and BS unit
Piping between BS unit and refrigerant branch kit
• Choose from the following table in accordance with the total capacity type of all the
indoor units connected downstream.
*1 Connection piping must not exceed the refrigerant Piping size between outdoor
unit and refrigerant branch kit (part A).
*2 When selecting 2 pipes line (gas pipe and liquid pipe), use Suction gas pipe
column for gas pipe and Liquid pipe column for liquid pipe.
(unit : mm)
Piping between refrigerant branch kit, BS unit and indoor unit
• Match to the size of the connection piping on the indoor unit.
(unit : mm)
Equalizer pipe (part D) (multi outdoor unit system only)
(unit : mm)
Indoor capacity index
Piping size (O. D.)
Suction gas pipe
HP/LP gas pipe
Liquid pipe
x < 150
φ
15.9
φ
12.7
φ
9.5
150
≤
x < 200
φ
19.1
φ
15.9
200
≤
x < 290
φ
22.2
φ
19.1
290
≤
x < 420
φ
28.6
φ
12.7
420
≤
x < 640
φ
28.6
φ
15.9
640
≤
x < 920
φ
34.9
φ
19.1
920
≤
x
φ
41.3
Indoor unit capacity type
Piping size (O. D.)
gas pipe
Liquid pipe
20 · 25 · 32 · 40 · 50 type
φ
12.7
φ
6.4
63 · 80 · 100 · 125 type
φ
15.9
φ
9.5
200 type
φ
19.1
250 type
φ
22.2
Piping size (O. D.)
φ
19.1
Temper grade and wall thickness for pipes
(Temper grade, O type and 1/2H type indicate the material type specified in JIS H 3300.)
Copper tube O. D.
φ
6.4
φ
9.5
φ
12.7
φ
15.9
φ
19.1
φ
22.2
φ
25.4
φ
28.6
φ
31.8
φ
34.9
φ
38.1
φ
41.3
Temper grade
O type
1/2H type
Wall thickness
(Min. requirement)
0.80 0.80 0.80 0.99 0.80 0.80 0.88 0.99 1.10 1.21 1.32 1.43
Summary of Contents for REYQ8-48PY1B
Page 1: ...Service Manual REYQ8 48PY1B R 410A Heat Recovery 50Hz SiBE37 701_B ...
Page 456: ...Piping Installation Point SiBE37 701_B 445 Appendix ...
Page 460: ...Example of connection SiBE37 701_B 449 Appendix ...
Page 476: ...Revision History Date News No Contents 2010 9 10 M 10011 Correction of service manual ...