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Application Guide • AIRCOOLAIR-AGU-1603-E
OPTIONS
Winter cooling operations down to 0 °C
This option allows the AIRCOOLAIR to operate in cooling mode
with an outside temperature down to 0°C (instead of 15°C on
the standard unit).
This is especially needed when free-cooling operation is not
possible. This function is made of condenser fan alternate start/
stop that maintains a constant condensing pressure.
This equipment is standard on heat pump versions
Winter cooling operations down to -15 °C
Unit fi tted with variable speed fans. This option also allows
cooling operation in very low outside temperature (-15°C), with
good performance on condenser fan, belt lifecycle extension
and starting peak current reduction.
Strongly recommended for applications where cooling is required
during winter.
Refrigerant pre-charged
As standard, the units are delivered with Nitrogen. With this
option, the outdoor unit is fi tted with refrigerant and equipped
with service valves option.
Active Acoustic Attenuation System with variable
speed fans
Low Noise option consists in an acoustic jackets .
Besides, with the variable speed fan include in Winter cooling
operations down to -15 °C option, the CLIMATIC 60 controls the
fan speed limited by the Smart Acoustic System which allows
progressive adaptation of the unit to the building load while
respecting the noise level constraints and the operating limits.
The maximum sound level and the fan strategies can be adjusted
according to the schedule mode in order to benefi t from the
different modes “Auto”, “Auto Quiet” and “Quiet” operation as
well as in heating or cooling mode.
The Active Acoustic Attenuation System can be adjusted
according to the scheduling and can take different values for
each schedule mode.
Service valves
This option consists in liquid and gas service valves that isolate
the refrigerant section during maintenance. This is particularly
useful when components of the circuit have to be changed. It
reduces the time and cost of maintenance operation.
Long distance refrigerant connection
When the distance between the condensing section and the
treatment section is over 40 meters of cupper piping, this kit has
to be installed. It allows distance up to 65 meters.
Main disconnect switch
Main disconnect switch is lockable to make a safe access to
electrical panel. It is installed on the electrical panel door of
the compressor section and controls all parts. Is also used as
emergency cut off: it is mandatory to guarantee a proper access
to this switch. Main disconnect switch is sized accordingly to the
options fi tted in the unit.
Smoke detector
Located downstream of the fi lter, the optical head of the smoke
detector can detect any type of smoke. When this occurs the
unit will stop operating, the return air damper will be fully closed
and the fresh air damper will fully open while sending an alarm
signal to the unit.
In accordance with the European norm, it is also compliant with
the French regulation on public buildings.
Compressor electrical protection
Return lock against 3 phases inversion at installation. This
protection prevents the Scroll compressor from starting and
operatint in the wrong sense: in case of the electrical phases
are wrongly connected, the compressor will not start. The
compressor electrical protection option is particularly required
when the installation of the air conditioning unit is made before
the electrical wirings.
Condenser coil guards:
The condenser coil protection grill prevents light damage to the
coil when shipping and when installed.
Coil Anticorrosion protection:
When the units are installed in potentially aggressive
environments, which can often be the case for example in coastal
environments, it is often a requirement that the coils are specially
treated to protect them against the corrosive effects. LenGuard
anti-corrosion treatment is available on indoor and outdoor units.
M0 Insulation indoor unit:
Because health and safety issue cannot be compromised,
Lennox equips its air treatment units (indoor unit) with a fi re-proof
insulation M0 that is mechanically fi tted to the unit.
Anti-vibration mounts rubber type (supplied loose)
These parts reduce the transmission of vibration to the ground
and the general sound level. They are fi xed under the unit at
the points specifi ed by our technical drawing.
Pallet packaging
This unit protection option is wooden pallet packaging with
plastic bag useful during potentially bad shipment condition:
long distance by truck or container.
REFRIGERATION OPTIONS
INSTALLATION AND SAFETY OPTIONS
Summary of Contents for AIRCOOLAIR ASC 020S
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