17Aermec cod.
5167556_03 17.09
NRK 0200-0700
MANUALLY RESET HIGH PRESSURE SWITCH
With fixed calibration, placed on high pressure side of cooling circuit, inhibits
functioning of compressor if abnormal work pressure occurs.
LOW PRESSURE TRANSDUCER
Placed on the low pressure side of the cooling circuit, it signals the work pressure to
the control board generating a pre-warning in the case of anomalous pressures.
HIGH PRESSURE TRANSDUCER
Placed on the high pressure side of the cooling circuit, it signals the work pressure to
the control board generating a pre-warning in the case of anomalous pressures.
DCPX CONDENSATION PRESSURE CONTROLLER
This accessory allows correct functioning with external temperatures lower than 10°C
and as low as – 10°C.
It consists of an adjustment circuit board that varies the number of fan revs according
to the condensation pressure read by the high pressure transducer, in order to keep it
sufficiently high for correct unit functioning.
It also allows correct functioning in heating mode with external temperatures
exceeding 30°C and up to 42°C.
5.5. ELECTRIC CONTROL
AND POWER BOARD
Electric board in compliance with standards EN 60204-1/IEC 204-1, complete with:
- transformer for the control circuit,
- door lock main isolating switch,
- fuses and contactors for compressors and fans,
- terminals for REMOTE PANEL,
- spring type control circuit terminal board,
- outdoor electric board with double door and gaskets,
- electronic controller,
- evaporator pump and recovery pump control consent relay (only for versions
without pump units),
- all numbered cables.
The electric control board can be accessed by removing the voltage. Act on the
opening lever of the control board itself. This lever can be locked using one or more
padlocks during maintenance interventions to prevent the machine being powered
up accidentally.
CONTROL KEYPAD
Micro-processor control system is the new function dedicated to the heat pumps with
integrated logic for high temperature hot water production.
Beside the control buttons, the keyboard features an LCD display which allows to
consult and adjust the unit with a multilevel menu and language option setting. It
controls:
• The temperature used by the system for environment heating and cooling, but
also the temperature of the water if it is used as domestic hot water. The man-
agement of the various temperatures is carried out automatically based on the
operating conditions of the machine and external inputs.
• Alarm management and log in order to always have a punctual diagnosis of the
unit operation.
• Creation of operating time intervals, necessary for an efficient programming
• For defrosting, a self-adapting logic is used, which allows the adjustment of
defrosting frequency for the benefit of efficiency.
• The unit can be supervised with...
• A dedicated keyboard for wall mounting (PGD1 accessory), which allows remote
control of all functions.
•
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