Airwell AQH 50 [2/28] General specifications
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Airwell AQH 50 [2/28] General specifications

Airwell AQH 70 [2/28] General specifications
Page 2
Why choose ILTC technology ?
Features and benefits
The new range of Aqu@Logic air-to-water reverse cycle heat
pumps comprises 14 models covering a nominal cooling capacity
range from 20 to 131 kW and a nominal heating capacity range
from 23 to 141 kW.
Aqu@Logic represents a new generation of innovative heat
pumps, integrating components using the very latest technological
advances.
These components provide Aqu@Logic heat pumps with
considerable advantages in terms of compact design and improved
efficiency and reliability.
All Aqu@Logic heat pumps are equipped with ILTC (Intelligent
Liquid Technology Chiller) control providing optimised control
across the unit’s entire operating range.
As standard equipment, each unit has two compressors, fitted in
tandem, for adapting to partial system loads.
Pressure and temperature sensors provide data to the electronic
control system for taking account of the prevailing operating
parameters in order to optimise system performance.
This intelligent control system enables water temperature to be
maintained within the required range, whilst only using a small
volume of water (2.5 l/kW) and thus eliminating, for the majority of
comfort air conditioning applications, the need for a buffer water
tank.
A maximum of technology
The new generation of Aqu@Logic air-to-water reverse cycle
heat pumps integrates high technology components :
- Scroll compressors.
- Brazed stainless steel plate heat exchangers.
- High efficiency axial fans with external rotors.
- Microprocessor based ILTC control.
- HFC 407C refrigerant fluid.
Quick and easy installation at minimal cost
- Compact units taking up the strict minimum of ground surface
area, for easy installation.
- “Plug and Play” design with an integrated hydraulic module for
minimising installation costs.
- Perfect accessibility : easy access to all components, thanks
to panels removable by a quarter turn key or screw, thus
significantly reducing unit maintenance times.
Increased performance
- Optimal efficiency, thanks to the use of Scroll compressors
with a high Coefficient Of Performance (COP), fitted in tandem
on all models in the range.
- Guaranteed for operating at outdoor temperatures between
-10 °C and +46 °C inclusive, thanks to the automatic condensing
pressure management system supplied as standard equipment
on all models in the range.
- Silent running, thanks to the dual-speed fan, selected for being
one of the quietest fans currently available on the market, and
thanks to the use of particularly quiet, low vibration, Scroll
compressors.
Built to last
- ILTC control automatically manages the balancing of the
compressors’ running times, thus enabling their service life to
be extended.
- Sealed refrigerant circuit : all the refrigerant components and
pipe work are brazed, thus eliminating any risks of leakage.
Pressure transducers replace the HP and LP pressostats,
along with their capillary tubes (principal source of leaks).
Energy savings all year round
Thanks to ILTC control :
- Providing intelligent management of the compressors’ running
times.
- In the majority of cases, obviating the need for a buffer tank for
comfort air conditioning applications.
- Continuously monitoring and managing all the machine’s
operating parameters.
Optimized defrost
The management of the defrost cycles is assured by the ILTC
control, which decides in relation to the unit operating parameters
and through temperature and pressure sensors, the start and the
stop of the unit defrost.
General specifications
Cabinet and structure
- Made of galvanised steel panels coated with oven-baked epoxy
paint. Colour : RAL 9001.
- For access to all components, the panels are removable by
just releasing quarter turn locks or screws.
Compressors
- Hermetically sealed, high output Scroll type compressors with
a high Coefficient Of Performance (COP).
- All models in the range equipped with compressors fitted in
tandem for reducing both starting current draw and power
absorbed under partial load conditions.
- Excellent acoustic performance with extremely quiet operation
and minimal vibration.
- Robust and reliable Scroll compressor technology :
Few moving parts (only 3), high tolerance to liquid pressure
shocks, low starting torque, protection against excessive
discharge temperatures.
- Compressor motor cooled by intake gasses and equipped
with automatic reset internal high temperature protection.
- All compressors are mounted on anti-vibration pads in order to
minimise noise and vibration transmission. Furthermore, they
are supplied with soundproof jackets.

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