Additional Installation Site Requirements Of The Outdoor Unit In Cold Climates; Preparing Refrigerant Piping; Refrigerant Piping Requirements - Daikin Sky Air Advance Series Installer's Reference Manual

5 Preparation
▪ Sound sensitive areas (e.g. near a bedroom), so that the
operation noise will cause no trouble.
Note: If the sound is measured under actual installation
conditions, the measured value might be higher than the sound
pressure level mentioned in Sound spectrum in the data book due
to environmental noise and sound reflections.
INFORMATION
The sound pressure level is less than 70 dBA.
▪ In places where a mineral oil mist, spray or vapour may be
present in the atmosphere. Plastic parts may deteriorate and fall
off or cause water leakage.
It is NOT recommended to install the unit in the following places
because it may shorten the life of the unit:
▪ Where the voltage fluctuates a lot
▪ In vehicles or vessels
▪ Where acidic or alkaline vapour is present
Seaside installation. Make sure the outdoor unit is NOT directly
exposed to sea winds. This is to prevent corrosion caused by high
levels of salt in the air, which might shorten the life of the unit.
Install the outdoor unit away from direct sea winds.
Example: Behind the building.
a
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.
Installer reference guide
10
b
c
d
c
b
It is recommended to install the outdoor unit with the air inlet facing
the wall and NOT directly exposed to the wind.
b
a Baffle plate
b Prevailing wind direction
c 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.
c
a Snow cover or shed
b Pedestal (minimum height=150 mm)
c Prevailing wind direction
d Air outlet
Snow might build up and freeze between the heat exchanger and
the casing of the unit. This might decrease the operating efficiency.
For instructions on how to prevent this (after mounting of the unit),
drainage" [ 4 14].
see "6.3.5 To provide
5.3

Preparing refrigerant piping

5.3.1

Refrigerant piping requirements

INFORMATION
Also read the precautions and requirements in the
"General safety precautions" chapter.
When connecting multiple indoor units to the outdoor unit, mind the
following:
Refrigerant branch kit One or more refrigerant branch kits are
required. See
unit" [ 4 9].
outdoor
Upward and Perform upward and downward piping only
downward piping on the main piping line (L1).
b
a
a
c
b
"4.3.1 Possible options for the
RZA200+250D7Y1B
Sky Air Advance-series
4P573383-1 – 2019.04