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Application Guide • AIRCOOLAIR-AGU-1603-E
OPTIONS
High
fi
ltration level - G4 pre-
fi
lter / F7
fi
ltration
G4 pre-fi lter 50 mm / F7 fi lter 100 mm are both in metallic refi llable
frames. This confi guration allows extending the lifecycle of fi lters
and reducing the cost of replacement, changing only the media.
100 mm fi lters have been selected also to reduce the energy
consumption due to:
- lower pressure drop especially when the fi lters start being
dirty.
- decrease of the replacement frequency.
Analog dirty
fi
lter and fan control :
This analog pressure sensor analyses the clogging of the fi lters
to inform the user and to allow preventive replacement of the
fi lters that will decrease the energy consumption and increase
the air quality.
Air Quality sensor :
This function allows to adapt the minimum fresh air to the building
occupancy. It measures the CO2 level and adjust the fresh air
volume accordingly.
Indoor air quality is controlled from the CLIMATIC main controller.
A VOC (Volatile Organic Component) sensor detects the amount
of CO2 in the ambient air between 0 and 2000PPM. The VOC
sensor sends a proportional signal (0-20mA) to the CLIMATIC
controller which will then modulate the fresh air damper.
Stepped or modulating Electrical heaters
Additional or instead of heat pumps, Lennox offers many auxiliary
heaters on every air-to-air units. This helps to adapt to local
climate requirement, local regulation preferences and applications
variable heating needs.
Standard, Medium and High heating power capacity are available
on each unit size
High electrical heater is also available as modulating instead
of 2-stage heater.
The performances of this option are available in auxiliary heaters
selection: page 44
The electric heater comprises of shielded resistance heaters,
which are smooth anticorrosion tubes 8 W/cm² capacity.
3 security elements are insuring permanent controls of the heaters:
- 2 high temperature limit controls offer overload protection. An
automatic reset safety thermostat is set at 75°C – a manual
reset safety thermostat is set at 105 °C; both located at less
than 150 mm over electric heaters. This is provided as a
standard feature on the electric heater, with the electric power
supply cables made of reticulated silicon rubber, resistant to
temperatures up to 200°C.
- an air pressure differential controls the fan activity and dis-
connects the electrical heater in case of critical airfl ow
- dual contactor are insuring safe redundancy in case of failure
of one dry contact
Modulating Hot water coil :
This modulating heater is equipped with a 3 way valve offering
accurate comfort and electronic adjustable antifreeze protection.
This avoids the use of glycol in most of European regions.
The hot water coils and control valves are factory fi tted in air
treatment section.
The performances of this option are available in auxiliary heaters
selection page 44.
INDOOR AIR QUALITY OPTIONS
AUXILIARY HEATERS OPTIONS
Summary of Contents for AIRCOOLAIR ASC 020S
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