How to select the Refnet header
Choose from the following table in accordance with the total capacity index of all the indoor unit connected below the REFNET
Note: 250 type indoor unit cannot be connected below the REFNET header
Indoor unit total capacity Index Refrigerant branch kit name
< 200 KHRP26M22H (MAX. 4 BRANCH)
200 ≤ x < 290 KHRP26M33H (MAX. 8 BRANCH)
290 ≤ x < 640 KHRP26M72H (MAX. 8 BRANCH) * see note 3 next pa
640 ≤ KHRP26M73H (MAX. 8 BRANCH) + KHRP26M73HP
How to select the outdoor unit multi connection piping kit (this is required when the system is multi outdoor system)
Choose from the following table in accordance with the number of outdoor units.
No. of outdoor Units Connection piping kit name
2 units BHFP22P100
3 units BHFP22P151
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 number of outdoor unit capacity type
(Example REFNET joint A)
Outdoor Unit capacity type Refrigerant branch kit name
5 HP Type KHRP26A22T
6, 8, 10 HP Type KHRP26A33T
12, 22 HP Type KHRP26A72T
24 HP Type KHRP26A73T + KHRP26A73T
Choose the REFNET joint other than that for the first branch from a following table in accordance with the total capacity index
of all the outdoor units connected below the REFNET joint
Indoor unit total capacity index Refrigerant branch kit name
< 200 KHRP26A22T
200 ≤ x < 290 KHRP26A33T
290 ≤ x < 640 KHRP26A72T
640 ≤ KHRP26A73T + KHRP26A73T
Piping between refrigerant branch kit
choose from the following table in accordance with the total capacity index of all the indoor units connected below this
do not let the connection piping exceed the main refrigerant piping size (unit mm)
Indoor unit total capacity index Piping Size (O.D.)
Gas Pipe
< 150 ǿ 15.9
150 ≤ x < 200 ǿ 19.1
200 ≤ x < 290 ǿ 22.2
290 ≤ x < 420
ǿ 28.6
420 ≤ x < 640
640 ≤ x < 920 ǿ 34.9
920 ≤ ǿ 41.3
Piping between refrigerant branch kit and indoor unit
match to the size of the connection piping on the indoor unit (unit mm)
Indoor unit total capacity index Piping Size (O.D.)
Gas Pipe
20, 25, 32, 40, 50 type ǿ 12.7
63, 80, 100 125, 140 type ǿ 15.9
200 type ǿ 19.1
250 type ǿ 22.2
400 type ǿ 28.6
500 type ǿ 28.6
Piping between outdoor unit and first refrigerant branch kit
Piping between first outdoor unit multi connection piping kit and first refrigerant branch kit (Part A)
choose from the following table in accordance with with the outdoor and capacity type piping between outdoor unit multi connection pipi
choose from the following table in accordance with with the total capacity type of the all the outdoor connection above outdoor unit multi
Unit mm
Indoor unit total capacity index Piping Size (O.D.)
Gas Pipe
5 HP Type ǿ 15.9
6, 8 HP Type ǿ 19.1
10 HP Type ǿ 22.2
12 - 16 HP type
ǿ 28.6
18 - 22 HP type
24 HP Type
ǿ 34.9
25 - 30 HP type
30 - 60 HP Type ǿ 41.3
Temper grade and wall thickness of pipes
(Temper grade, O type and 1/2H type indicate the material types specified in JIS H 3300)
Copper tube OD Copper tube W.T. (Minimum requirement) T
ǿ 6.4 0.80
ǿ 9.5 0.80
ǿ 12.7 0.80
ǿ 15.9 0.99
ǿ 19.1 0.80
ǿ 22.2 0.80
ǿ 25.4 0.80
ǿ 28.6 0.99
ǿ 31.5 1.10
ǿ 34.9 1.21
ǿ 38.1 1.32
ǿ 41.3 1.43
ected below the REFNET Header
nch kit name
AX. 4 BRANCH)
AX. 8 BRANCH)
CH) * see note 3 next page
ANCH) + KHRP26M73HP
utdoor system)
ping kit name
2P100
2P151
nch kit name
6A22T
6A33T
6A72T
KHRP26A73T
the total capacity index
nch kit name
6A22T
6A33T
6A72T
KHRP26A73T
nected below this
e (O.D.)
Liquid Pipe
ǿ 9.5
ǿ 12.7
ǿ 15.9
ǿ 19.1
e (O.D.)
Liquid Pipe
ǿ 6.4
ǿ 9.5
ǿ 12.7
ǿ 15.9
unit multi connection piping kit (Part B)
n above outdoor unit multi connection piping kit
e (O.D.)
Liquid Pipe
ǿ 9.5
ǿ 12.7
ǿ 15.9
ǿ 19.1
Temper Grade
O type
1/2H type
