Additional Installation Site Requirements Of The Outdoor Unit In Cold Climates; Securing Safety Against Refrigerant Leaks - Daikin RXYSCQ4TMV1B Installer And User Manual

5 Preparation
If the outdoor unit is exposed to direct sea winds, install a
windbreaker.
▪ Height of windbreaker≥1.5×height of outdoor unit
▪ Mind the service space requirements when installing the
windbreaker.
a
d
c
a Sea wind
b Building
c Outdoor unit
d Windbreaker
Strong winds (≥18 km/h) blowing against the outdoor unit's air outlet
causes short circuit (suction of discharge air). This may result in:
▪ deterioration of the operational capacity;
▪ frequent frost acceleration in heating operation;
▪ disruption of operation due to decrease of low pressure or
increase of high pressure;
▪ a broken fan (if a strong wind blows continuously on the fan, it
may start rotating very fast, until it breaks).
It is recommended to install a baffle plate when the air outlet is
exposed to wind.
Turn the air outlet side towards the building's wall, fence or screen.
a Make sure there is enough installation space
Set the air outlet side at a right angle to the direction of the wind.
a
a
a Prevailing wind direction
b Air outlet
5.2.2 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.
Installer and user reference guide
10
d
c
b
c
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:
20
15.5
15
10
5
a b
0
–5
–10
–15
–20
10 15 20
T (°C DB)
AI
a Warming up operation range
b Operation range
T Ambient indoor temperature
AI
T Ambient outdoor temperature
AO
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.
5.2.3

Securing safety against refrigerant leaks

About safety against refrigerant leaks
The installer and system specialist shall secure safety against
leakage according to local regulations or standards. The following
standards may be applicable if local regulations are not available.
This system uses R410A as refrigerant. R410A itself is an entirely
safe non-toxic, non-combustible refrigerant. Nevertheless care must
be taken to ensure that air conditioning facilities are installed in a
a
c
b
25 27 30
RXYSCQ4+5TMV1B
VRV IV-S system air conditioner
4P404224-1 – 2015.03