10
Aermec cod. 14.09 4086982_03
NRL 2000-3600 60Hz
EN
- electronic controller,
- evaporator pump and recovery pump control
consent relay
- all numbered cables.
DOOR-BLOCK DISCONNECTING SWITCH
IT is possible to access the electrical panel by discon-
necting the voltage, then using the opening lever of
the panel itself. This lever can be blocked with one or
more padlocks during maintenance, in order to prevent
the machine being powered up accidentally.
REMOTE CONTROL PANEL (PR3)
This allows the chiller command operations to
be given from a distance. compressor protection ther-
momagnetic switch; fan protection thermomagnetic
switch; auxiliary protection thermomagnetic switch;
discharge gas temperature control thermostat
CONTROL KEYPAD
Provides full control functions. For a detailed
description refer to the user manual.
ELECTRONIC REGULATION
GR3
with proportional-integral algorithm: maintains
average output temperature at value set
•
Self-adapting differential switch: guarantees
•
minimum functioning times of the compressor in systems with
low water content.
•
Intelligent defrosting for pressure reduction:
•
allows to determine when the coil is effectively defrosted, avoi-
ding useless defrosting
•
Set-point compensation with external temperature (with external
air probe accessory): reduces energy consumption
•
Condensation check based on the pressure rather than on
temperature for absolute stability (with DCPX revs. adjuster
accessory )
•
Inverse condensation check for the heat pump functioning mode
also in summer (with DCPX revs. adjuster accessory)
•
Pre-alarms with automatic reset: in the case of alarm, a certain
number of restarts are allowed before the definitive
•
block
•
Alarm on the ΔT: to identify wiring errors (reverse rotation) or
blocked cycle reversing valve
•
Compressor functioning hours count.
•
Compressor peak count.
•
Historical alarms
•
Autostart after voltage drop.
•
Local or remote control
Display of the start of the unit:
a.Voltage presence
b. compressor ON/OFF
c. functioning mode (hot/cold)
d. alarm active
Probes, transducers and parameters
display
a. Water outlet
b. water inlet
c. Coil temperature (heat pumps)
d. Pressing gas temperature
e. External air temperature (heat pumps,
cooling only with DCPX and probe)
f. Pressure delivery (heat pumps)
g.Intake pressure (heat pumps)
h. Temperature error (sum of the proportional and integral
error)
i. Stand-by times for start-up/switch-off of the compressor
Alarms management:
a. Low pressure
b. High pressure (primary alarm: switch directly blocks supply to com-
pressor)
c. High discharge temperature
d. Anti-freeze
e. Water differential flow switch. Alarm on the ΔT
− Alarms with automatic reset with limited number of re-starts before
blocking.
− ON/OFF external contact
− Change season from external contact
For further information please refer to user manual.
