English
7
Outside unit multi connection piping kit and
Refrigerant branch kit selection
Pipe size selection
•
Refrigerant branch kits can only be used with R410A.
•
When multi outdoor system are installed, be sure to use the
special separately sold Outside unit multi connection piping
kit. (BHFP26P90U).
(For how to select the proper kit, follow the table at right.)
•
Never use BHFP26M90U, BHFP22M90U for M type of this
series or T joint (field supplyed).
How to select the REFNET joint
Piping between outside unit(*2 and refrigerant branch kit (partA)
How to select the REFNET header
When using REFNET joint at the first branch counted from the outside unit side,
choose from the following table in accordance with the outside unit capacity type.
(Example : REFNET joint A)
Choose from the following table in accordance with the outdoor
units system capacity type.
Piping between outside unit multi connection piping kit and outside unit (part B)
Choose from the following table in accordance with the capacity type of
the outside unit connected.
Choose from the following table in accordance with the total capacity index of all
the indoor units connected below the REFNET header.
How to select the outside unit multi connection piping kit
(This is required when the system is multi outside unit system.)
Choose from the following table in accordance with the number of outside units.
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.
Outside unit capacity type
REYQ72 · 96PA type
REYQ120~192PA type
Indoor unit total capacity index
× < 72
72
≤
× < 111
111
≤
×
Refrigerant branch kit name
KHRP25M33T
KHRP25M72TU
3 pipes
KHRP25M22T
KHRP25M33T
KHRP25M72TU
2 pipes
KHRP26M22T
KHRP26M33T
KHRP26M72TU
Refrigerant branch kit name
Indoor unit total capacity index
× < 72
72
≤
× < 111
111
≤
Number of outside unit
2 units
Connecting piping kit name
BHFP26P90U
3 pipes
KHRP25M33H
KHRP25M72H
2 pipes
KHRP26M22H or KHRP26M33H
KHRP26M33H
KHRP26M72H
Refrigerant branch kit name
Example for indoor units
connected downstream
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
The thickness and material shall be selected in
accordance with local code.
For an outside unit installation, make
the settings in accordance with the
following figure.
Outside unit
Equalizer pipe
(part C)
Piping between outside unit
multi connection piping kit
and outside unit (part B)
Piping between outside unit multi
connection piping kits
Piping between outside unit and
refrigerant branch kit (part A)
Outside unit
capacity type
REYQ72PA type
REYQ96PA type
REYQ120PA type
REYQ144PA type
REYQ168PA type
REYQ192PA type
Piping size (O. D.)
Piping size (O. D.)
Suction gas pipe
φ
3/4
φ
7/8
φ
1-1/8
HP/LP gas pipe
φ
5/8
φ
3/4
φ
7/8
φ
1-1/8
Liquid pipe
φ
3/8
φ
1/2
φ
5/8
Outside unit
capacity type
REMQ72 · 96PA type
Suction gas pipe
φ
7/8
HP/LP gas pipe
φ
3/4
Liquid pipe
φ
3/8
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.
Piping between refrigerant branch kit, BS unit and indoor unit.
Equalizer pipe (part C) (outside multi system only)
Match to the size of the connection pipng on the indoor unit.
*1 Connection piping must not exceed the refrigerant Piping size between outside
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.
Indoor capacity index
× < 54
54
≤
× < 72
72
≤
× < 111
111
≤
× < 162
162
≤
×
Indoor unit capacity type
07
·
09
·
12
·
18
24
·
30
·
36
·
48
gas pipe
φ
1/2
φ
5/8
Liquid pipe
φ
1/4
φ
3/8
Piping size (O. D.)
φ
3/4
(unit : in.)
(unit : in.)
Piping size (O. D.)
(unit : in.)
Piping size (O. D.)
(unit : in.)
(unit : in.)
Suction gas pipe
φ
5/8
φ
3/4
φ
7/8
φ
1-1/8
HP/LP gas pipe
φ
1/2
φ
5/8
φ
3/4
φ
1-1/8
Liquid pipe
φ
3/8
φ
1/2
φ
5/8
