Checking Before Commissioning; Electrical Connections - Carrier 30PA Installation, Operation And Maintenance Instructions

Ductable air-cooled scroll
chillers and heat pumps
9. C
HECKING BEFORE COMMISSIONING
NOTE: Under no circumstance should the unit be started without having read the brochure completely.

Electrical connections

 Installation norms
In order to establish the unit's electric power supply (cable inlet,
calculation of the lead section, protections etc.), refer to:
- The information supplied in this document (table of technical
characteristics).
- Data plate.
- The wiring diagram and the legend supplied with the unit.
- The electronic control brochure which is supplied with the unit.
- The regulations and norms in force which regulate the installation of
air-conditioning units and electric receivers.
The electric power supply of the unit must be sized in accordance with
the maximum power input by the unit taking into account all the options
it features (if necessary, refer to the technical brochure).
Verify that electrical power corresponds to the one on the data plate
and that the voltage remains constant.
Check that the electrical connections are correct and tight
(an electrical diagram is included with each unit, along with
its legend).
Note: All connections in the site are the responsibility of the
installer. These connections are always made as per the
current regulation.
To prevent electrical shocks, make all electrical connections
before energizing the unit. Check that the automatic switch
is closed. Omitting this can cause personal damage. Make
V-220004
the ground connection before any other electrical connection.
The installer must fi x line protection elements according to
the effective legislation.
V-220005
Collapsible
polycarbonate
window for
access to the
pGD1 terminal
Options
for outlet from
the electrical
power supply
Electric
panel
Door
switch
 30PA/PH electronic control
The 30PA/PH control l is basically comprised of a μPC SMALL control
board, a pGD1 graphic terminal, a TCO user terminal (optional for
remote control) and sensors.
Main functions:
- Control in COOLING / HEATING modes.
- Selecction of inlet water temperature setpoints for COOLING /
HEATING modes.
- Permanent control and optimization of the operating parameters
- Safety management.
- Timing of the compressor.
- Defrosting management (heat pumps).
- Control of condensation and evaporation pressures.
- Control of outdoor electronic plug-fan (HEE version).
- Control of the circulation pump.
- Regulation of the water outlet temperature.
- Compensation of the setpoint based on the outdoor temperature.
- Timer and weekly programming.
- Failure diagnosis and main alarm.
pGD1 terminal
This graphic terminal, installed on
the electric panel of the machine,
allows:
- The initial programming of the
unit
- Modifi cation of operating parameters.
- Unit ON / OFF.
- Selection of the operating mode.
- Setting of setpoints.
- On-screen display of controlled variables and sensor values measured.
- On-screen display of active alarms and historical record of alarms.
TCO user terminal (optional for remote control):
The TCO user terminal, for remote control,
allows:
- Modifi cation of some operating parameters.
- Unit ON / OFF.
- Selection of the operating mode and setting
of setpoints.
- On-screen display some controlled
variables and probe values.
- On-screen display of alarms codes.
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