17
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Unit installation
Installer and user reference guide
59
RXYSQ4~6T8V/YB
VRV IV-S system air conditioner
4P482277-1B – 2020.10
17.1.2 Additional installation site requirements of the outdoor unit in cold climates
Protect the outdoor unit against direct snowfall and take care that the outdoor unit
is NEVER snowed up.
a
b
c
c
d
a
Snow cover or shed
b
Pedestal (minimum height = 150 mm)
c
Prevailing wind direction
d
Air outlet
NOTICE
When operating the unit in heating in a low outdoor ambient temperature with high
humidity conditions, make sure to take precautions to keep the drain holes of the
unit free by using proper equipment.
In heating:
T
AO
(°C WB)
a
b
20
15.5
15
10
5
0
–5
–10
–15
–20
10
15
20
25 27 30
T
AI
(°C DB)
a
Warming up operation range
b
Operation range
T
AI
Ambient indoor temperature
T
AO
Ambient outdoor temperature
If the unit is selected to operate at ambient temperatures lower than –5°C for 5 days
or longer, with relative humidity levels exceeding 95%, we recommend to apply a
Daikin range specifically designed for such application and/or to contact your dealer
for further advice.