AERMEC NRL 080, Техническое руководство, Страница: 11 / 32

11 Aermec cod. 14_09.4086981_04
NRL 800-1800 60Hz
EN
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
Microprocessor board
Composed of management & control board
and display board.
Functions performed
− adjustment of evaporator inlet water temperature with thermostatic control
up to 6 steps and proportional control over the speed of the fans (with DCPX
accessory)
− compressor start up delay
− rotation sequence compressors;
− compressor operating hours count.
− start/stop;
− reset;
− permanent memory of alarms;
− autostart after power failure.
− multilingual messaging;
− working with local or remote control.
(accessory PGD1)
Machine state display
− ON/OFF compressors.
− alarms summary
Alarm Management
− high pressure.
− flow switch.
− low pressure.
− antifreeze.
− overload compressors;
− overhead fans;
− overload pumps.
Viewing of the following parameters
− water inlet temperature;
− water outlet temperature;
− delta T;
− high pressure;
− low pressure;
− hold time to reboot;
− alarms display
Set settings
• a) without password:
cold set;
total differential;
• b) with password:
antifreeze set;
time exclusion low pressure;
display language;
access code.
For more information refer to the user manual.
ATTENTION
In heat pump models the desuperheater
must be shut-off in heat pump mode, or the
warranty will be come void.