Installation
EDUS391004-N
54
Installation of Outdoor Units
Outdoor 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 Outdoor unit multi connection piping
kit. (BHFP22P100U). (BHFP22P151U)
(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 supplied).
How to select the REFNET joint
Piping between outdoor unit (*2) and refrigerant branch kit (part A)
How to select the REFNET header
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 from the following table in accordance with the outdoor units system
capacity type.
Piping between outdoor unit multi connection piping kit and outdoor unit (part B)
Choose from the following table in accordance with the capacity type
of the outdoor unit connected.
Choose form the following table in accordance with the total capacity index of all
the indoor units 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.
Choose the REFNET joints other than the first branch from the following table in a accordance
with the total capacity index of all the indoor units connected below the REFNET joint.
Outdoor unit capacity type
RXYQ72 · 96P type
RXYQ120 ~ 216P type
RXYQ240P ~ 360P type
Indoor unit total capacity index
x < 72
72
≤
x < 111
111
≤
x < 246
246
≤
x
Refrigerant branch kit name
KHRP26M33T
KHRP26M72TU9
KHRP26M73TU9
Refrigerant branch kit name
KHRP26M22T
KHRP26M33T
KHRP26M72TU9
KHRP26M73TU9
Indoor unit total capacity index
x < 72
72
≤
x < 111
111
≤
x < 230
230
≤
x
Number of outdoor unit
2 units
3 units
Connecting piping kit name
BHFP22P100U
BHFP22P151U
Refrigerant branch kit name
KHRP26M22H9 or KHRP26M33H9
KHRP26M33H9
KHRP26M72H9
KHRP26M73H9
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 outdoor unit installation, make
the settings in accordance with the
following figure.
<In case of RXYQ144PBTJ>
Outdoor unit
Piping between outdoor unit
multi connection piping kit
and outdoor unit (part B)
Piping between outdoor unit multi
connection piping kits
Piping between outdoor unit and
refrigerant branch kit (part A)
Outdoor unit
capacity type
RXYQ72P type
RXYQ96P type
RXYQ120P type
RXYQ144P type
RXYQ168P type
RXYQ192 · 216P type
RXYQ240P type
RXYQ264~336P type
RXYQ360P type
Piping size (O. D.)
Piping size (O. D.)
Gas pipe
φ
3/4
φ
7/8
φ
1-1/8
φ
1-3/8
φ
1-5/8
Liquid pipe
φ
3/8
φ
1/2
φ
5/8
φ
3/4
Outdoor unit
capacity type
RXYQ72P type
RXYQ96P type
RXYQ120P type
Gas pipe
φ
3/4
φ
7/8
φ
1-1/8
Liquid pipe
φ
3/8
φ
1/2
Piping between refrigerant branch kits
Choose from the following table in accordance with the total capacity type
of all the indoor units connected downstream.
Piping between refrigerant branch kit and indoor unit.
Match to the size of the connection piping on the indoor unit.
*1 Connection piping must not exceed the refrigerant Piping size between outdoor
unit and refrigerant branch kit (part A)
Indoor capacity index
x < 54
54
≤
x < 72
72
≤
x < 111
111
≤
x < 162
162
≤
x < 230
230
≤
x < 300
300
≤
x
Indoor unit capacity type
07 · 09 · 12 · 18
24 · 30 · 36 · 48 · 54
72
96
Gas pipe
φ
1/2
φ
5/8
φ
3/4
φ
7/8
Liquid pipe
φ
1/4
φ
3/8
(unit : in.)
(unit : in.)
Piping size (O. D.)
(unit : in.)
Piping size (O. D.)
(unit : in.)
Gas pipe
φ
5/8
φ
3/4
φ
7/8
φ
1-1/8
φ
1-3/8
φ
1-5/8
Liquid pipe
φ
3/8
φ
1/2
φ
5/8
φ
3/4
Piping between outdoor unit and
refrigerant branch kit (part A)
3P215731-10R
Содержание VRV III REMQ120PBTJ
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