EDM SYSCROLL 140 360 AIR EVO

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SYSCROLL AIR EVO
6
Control:
HP and LP transducers (each circuit).
Evaporator water inlet temperature sensor.
Evaporator water outlet temperature sensor (with an
antifreeze function).
Suction temperature sensor for EXV control.
Ambient air temperature sensor.
Coil temperature sensors.
Heat recovery condenser temperature sensor (TR only).
Electronic control
The units are supplied with the new microprocessor-based
electronic control and management system ensuring the
following functions:
Management of the operation of compressors:
Power on/off
Anticycle management
Tandem unloading for high pressure or high compres-
sor pressure ratio (integrated inside the curves of
compressor operating limits).
Chilled and hot water temperature regulation (control
option on inlet water temperature RWT (P+I type) or
outlet water temperature LWT (neutral band type) of
the evaporator.
Control of superheating on suction line.
Evaporator antifreeze protection.
Heat pump defrost control for automatic operation.
Management of high and low pressure alarms.
Management of the electronic expansion valves by
means of EXV controller allowing optimized functions:
cooling, heating, start-up and defrost.
Management of external interlocks.
Management of the remote control:
Unit power on/off
Summary alarm signals
Remote signalling, by dry contacts:
Voltage presence
Compressors in operation
General Alarm
Management of the hydro kit: start-up of pump, anti-
freeze heater of external tank.
Management of the heat recovery mode by means of
inlet water temperature sensor at the heat recovery con-
denser.
The unit controller can also clearly show all control param-
eters of the machine on the liquid crystal display, such as:
Display of superheating value.
Display of the temperature at the evaporator inlet and
outlet.
Display of the ambient air temperature.
Display of the circuit 1 and circuit 2 discharge pressure
and suction pressure.
Display of the set point.
Display of the various alarm and operation status:
Low / High pressure
Evaporator antifreeze
Flow switch signal for lack of water
Control of the compressor operating hours
Compressors in operation
Pump in operation and operating hours
Thermal protection of compressors
Thermal protection of fans
Faulty sensors
Standard equipment
Set point timer/clock card.
Pressure actuated fan speed control.
Back light display.
Digital pressure and temperature reading kit.
High ambient pressure control.
Sequence phase control.
Electronic expansion valves.
Control circuit transformer 400 V/230 V.
Data logger.
Power supply without neutral.
Hour meter.
Main switch.
Refrigerant R410A.
PED approval.
Evaporator antifreeze electric heater.
Compressor jacket (standard on S version).
Compressor box.
Water pump acoustic box (as standard on S version).
Water differential pressure switch.
Antifreeze electric heater for hydraulic manifolds (brine
application).
Optional hydro kits
On board mounted inside and remote hydrokits are available
as optional. The on board hydro kits can be supplied with or
without buffer tank while remote hydro kits (supplied loose
for eld installation) are always provided with internal tank.
The on board hydro kit without buffer tank has the fol-
lowing components:
Single or double pump with low static pressure (100
kPa) or high static pressure (200 kPa),
Expansion tank (18 litres for all models),
Shut-off valves,
Safety valve,
Automatic air vent valve,
Thermal insulation for pipes and water pump(s),
The water pump(s) is supplied with sound-proof box for
units in S version. The on board hydro kit without buffer
tank are available also for TR units.
The on board hydro kit with buffer tank has the following
components:
Single or double pump with low static pressure (100
kPa) or high static pressure (200 kPa),
Buffer tank (350 lt for 140-170 and 500 lt for 230-
360),