Daikin VRV IV+ RXYTQ8U5YF Installer And User Manual page 66

17 | Piping installation
Installer and user reference guide
66
Example
Example 2.1
r s
t
u
a b c d
A B C
h i j
1 2 3
Example 2.2
r
s
u a
c d
1 2
Example 2.3
r
u
a
b c d
1 2 3
Example 3
r
u
Indoor unit
Refnet joint
Refnet header
Outdoor multi connection piping kit
Maximum allowable length
▪ Between outdoor and indoor units (single installation/multi combinations)
Actual piping length
Equivalent length
e f g
H1
D E F G
p
k l m n
4 5 6 7
8
H2
H3
t
H1
A B
b
j k
7 8
H2
e f g h
3 4 5 6
H3
t
s
H1
e f g h i
4 5 6 7
8
H2
s t
165 m/135 m
Example 1.1
▪ unit 8: a+b+c+d+e+f+g+p≤165 m
Example 1.2
▪ unit 6: a+b+h≤165 m
▪ unit 8: a+i+k≤165 m
Example 1.3
▪ unit 8: a+i≤165 m
Example 2.1
▪ unit 8: a+b+c+d+e+f+g+p≤135 m
190 m/160 m
Description
Multi outdoor
Branch with refnet joint
Multi outdoor
Branch with refnet joint
and refnet header
Multi outdoor
Branch with refnet header
With standard multi layout
VRV IV+ heat pump for high ambient temperatures
4P561157-1B – 2021.11
RXYTQ