Airedale EcoChill 6kW - 46kW - Manual (Page 11)

11
EcoChill Chiller
Technical Manual 7300221 V1.1.0_02/2013
2. DESCRIPTION OF THE
COMPONENTS
2.1. COOLING CIRCUIT
Compressor
− High efficient scroll
compressor, activated
by a 2 pole electric
motor with internal
temperature protection.
They are supplied as
standard with crankcase
resistive heater. The
compressor is mounted
on rubber anti vibration
mounts.
Air-side heat
exchanger
Made with
copper coil with
aluminium louvered
fins blocked
by mechanical
expansion of the
pipes. Provided with
coil guard.
Water-side heat exchanger
Plate type, isolated externally
with closed cell material to reduce
heat loss. IN A VERSIONS in sizes
020 - 025 - 030 - 040 it is positioned
inside the water storage tank.
Dehydrator filter
Mechanical type filter realised in
ceramics and hygroscopic material,
able to collect any non condensables
within the the cooling circuit.
Thermostatic valve
Mechanical valve, with external
equaliser positioned at evaporator
outlet, modulates the flow of gas to
the evaporator, depending on the
heat load, in order to ensure a correct
superheat.
Liquid and discharge line taps
("C MOTOR CONDENSING"
versions)
Allows interruption of the refrigerant
in the case of extraordinary
maintenance.
HOT GAS INJECTION
Solenoidvalve
− (for heat pump only.)
− The valve positioned between the
compressor and the thermostatic
valve outlet controls:
− Defrosting cycles without having to
reverse the cycle
− Safety capacity control if the pres-
sure should rise on the discharge
line
HOT GAS BY-PASS INJECTION
VALVE
Only D version
Device for hot gas injection of
evaporator, mounted on versions with
partial recovery.
Cycle reversing valve
(for heat pump only.)
Reverses the flow of refrigerant on
variation of summer/winter mode and
during any defrosting cycles.
One-way valve
Allows one-way flow of the refrigerant.
Liquid storage
(for heat pump only.)
Compensates for the internal volume
differences between louvered fin coil
and plate exchanger, withholding
excess liquid during winter operation.
FRAME AND FANS
Ventilation unit
Helical type, balanced statically
and dynamically. Electric fans are
protected electrically by magnet-circuit
breakers and mechanically by anti-
intrusion metal grids, according to IEC
EN 60335-2-40 Standard.
Support frame
Made in hot galvanised sheet steel
with suitable thickness and painted
with polyester powders for corrosion
protection.
KEY
1 Scroll compressor
2 Thermostatic valve
3 Dehydrator filter
4 Cycle reversing valve
5 Plate heat exchanger
6 Differential pressure switch
7 Circulation pump
8 Expansion vessel
9 Safety valve (6 bar)
10 Water filter
11 Exchanger coil
12 Electric box
13 MODUCONTROL display
14 Door-lock isolating switch
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