Daikin GYEQ20AN Service Manual page 50

Installation Work Manual
Selecting the refrigerant branch kits (REFNET Joints and headers)
REFNET Joints and headers should be selected from the table below based on the total capacity of
the indoor units.
No additional branch can be added downstream of REFNET header. Model 250 or higher indoor units
cannot be connected downstream of the header.
Branching pipes for R22 / R407C cannot be used in place of branching pipes for R410A. Be sure to
use branching pipes designed specifically for use with R410A.
Selecting REFNET Joint
First branch
(the first branch with
respect to the outdoor unit)
Outdoor unit
capacity
GYEQ20AN
GYEQ30AN
Selecting REFNET Headers
Total capacity of indoor units connected downstream
Lower than 22.4 kW
22.4 kW or more but less than 33.0 kW
22.4 kW or more but less than 71.0 kW
71.0 kW or more
39
Between the second branch and BS unit, downstream of BS unit
Total capacity of indoor units connected
downstream
REFNET Joint
Total capacity
part number
KHRP25A72T
Less than 22.4kW
KHRP25A73T
22.4 kW or more but less than 33.0 kW
22.4 kW or more but less than 71.0 kW
71.0 kW or more
Between the second branch and BS unit
Total capacity
7 Installing the Outdoor Unit
Between the second
branch and BS unit
(3 pipes)
REFNET Joint part
number
KHRP25A22T
KHRP25A33T
KHRP25A72T + KHRP25M72TP
KHRP25A73T + KHRP25M73TP
(3 pipes)
REFNET Headers part number
KHRP25M33H
KHRP25M72H
KHRP25M73H
– 11 –
SiAUY361411EA
Downstream of BS unit
(2 pipes)
REFNET Joint part
number
KHRP26A22T
KHRP26A33T
-
-
Downstream of BS unit
(2 pipes)
REFNET Headers part number
KHRP26M22H
KHRP26M33H
-
-
0FGHP-EN0801 DGJ002
Device Overview