Daikin VRV IV+ RXYTQ8U5YF Installer And User Manual page 69

RXYTQ
VRV IV+ heat pump for high ambient temperatures
4P561157-1B – 2021.11
a
b
a To indoor unit
b Piping between outdoor units
NOT allowed (oil remains in piping)
Allowed
▪ To avoid the risk of oil retention to the outmost outdoor unit, always connect the
stop valve and the piping between outdoor units as shown in the 4 correct
possibilities of the figure below.
a
b b
a
b b
a
a
b
a
a
a To indoor unit
b Oil collects to the outmost outdoor unit when the system stops
NOT allowed (oil remains in piping)
Allowed
▪ If the piping length between the outdoor units exceeds 2 m, create a rise of
200 mm or more in the gas line within a length of 2 m from the kit.
If
≤2 m
a
>2 m
a
a To indoor unit
b Piping between outdoor units
b
b
a
b b
a
Then
b
≤2 m
>2 m >2 m
b
≤2 m ≤2 m
17 Piping installation
|
a a
b
Installer and user reference guide
69