Iom AQCH 25, Руководство по установке и обслуживанию

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DESCRIPTION DESCRIPTION DESCRIPTION DESCRIPTION DESCRIPTION
The AQCL / AQCH units are monobloc, single circuit liquid coolers for air conditioning applications, operating with
water or water/glycol solution.
After the units are assembled, the refrigerating and electrical circuits are tested at the factory in order to guarantee
correct operation.
The are filled with an operational refrigerant fluid charge and are subjected to pressure tightness tests.
The AQCL Cooling only models can produce chilled water at temperatures varying b18 °C to +5 °C or
chilled water/glycol solution at temperatures varying b5 °C to -5 °C.
The AQCH Heat pump models can produce hot water at temperatures varying b25 °C and +50 °C.
CABINET AND FRAME CABINET AND FRAME CABINET AND FRAME CABINET AND FRAME CABINET AND FRAME
The units’ base and frame are made of high thickness galvanised steel elements assembled with stainless steel screws
and nuts.
All the cabinet panels can be easily removed to provide access to the various internal components. The galvanised
steel panels are coated with oven-baked white paint (RAL9001).
COMPRESSORS COMPRESSORS COMPRESSORS COMPRESSORS COMPRESSORS
The units are equipped with two sealed Scroll compressors, mounted in tandem.
The compressors are mounted on vibration absorbing rubber pads and are located inside an acoustic housing.
The compressor motors are cooled by a refrigerating gas and equipped with an internal heat overload thermistor. The
overload protection automatically resets itself after about 8 seconds.
EV EV EV EV EVAPORA APORA APORA APORA APORATORS TORS TORS TORS TORS
The evaporators are of the brazed stainless steel plate heat exchanger type with thermal insulation.
Their service pressure shall be 10 bar (water side) and 30 bar (refrigerant side).
The evaporator is protected against freezing by an electric resistance, a differential pressure pressostat (for models 20
to 30) and a flow controller (for models 40 to 80).
CONDENSER BA CONDENSER BA CONDENSER BA CONDENSER BA CONDENSER BATTERIES TTERIES TTERIES TTERIES TTERIES
The condenser batteries are made of weld-free copper pipes that are arranged in staggered rows and crimped in
aluminium fins. The batteries’ service pressure is 28 bar.
CONDENSER F CONDENSER F
CONDENSER F CONDENSER F
CONDENSER FANS ANS
ANS ANS
ANS
The condenser fans are of the centrifugal type with dual turbines and are driven by a pulley system. The allow aeraulic
adjustments to be made during installation.
F FF FFAN CONTROLCOMMANDE DES VENTILA AN CONTROLCOMMANDE DES VENTILA AN CONTROLCOMMANDE DES VENTILA AN CONTROLCOMMANDE DES VENTILA AN CONTROLCOMMANDE DES VENTILATEURS TEURS TEURS TEURS TEURS
The units can be equipped with a ventilation (fan) speed regulator operating in relation to condensing pressure. This
enables system operation at outdoor temperatures as low as -7 °C.
REFRIGERA REFRIGERA
REFRIGERA REFRIGERA
REFRIGERATING CIRCUIT TING CIRCUIT
TING CIRCUIT TING CIRCUIT
TING CIRCUIT
Each unit has a single refrigerating circuit equipped with an external service valve (for raising the refrigerant pressure
and for filling the refrigerant fluid charge), with a liquid inspection porthole integrating a humidity indicator, a
dehumidification filter and a thermostatic pressure relief valve.
A high pressure pressostat and high and low pressure transducers are also provided on the refrigerating circuit.
POWER SUPPLY AND CONTROL BOX POWER SUPPLY AND CONTROL BOX POWER SUPPLY AND CONTROL BOX POWER SUPPLY AND CONTROL BOX POWER SUPPLY AND CONTROL BOX
All the control and motor starting equipment necessary for efficient unit operation is wired and tested at the factory.
A service hatch, offering easy access, protects the power supply and control components.