8. C
HECKING
BEFORE
COMMISSIONING
Electronic control
• CARRIERrtc
basic
All 38HB/HF units have the
CARRIERrtc basic
electronic control,
comprised of a control board and a TCO user terminal.
Optionally, this control can have a pGD1 terminal for maintenance
that facilitates the initial scheduling of the unit, the modi
fi
cation of the
operating parameters and the description of the alarms produced.
Recommendations for installation of the TCO terminal
From the thermostat some of the unit
operation aspects are controlled: operation
modes, setpoint, differential, timings...
Because of this, it is very important to
chose an appropriate location within the
room since in it is where the unit’s control
probe is located. This probe must report
about the environmental conditions of the
occupied area.
The thermostat must be
fi
xed at a height of 1,5 metres from the
ground and all possible interferences must be avoided: sun, outdoor
air, internal heat sources... Mount the thermostat to the wall using
the bracket, do not leave it hanging from the wire or embedding it
in the wall.
750
750
750
750
750
750
Outdoor unit 38HB/HF
Indoor unit 40HB/HF
M inim um fre e spa c e for c om m issioning a nd m a int e na nc e ope rat ions (m m )
NOTE: Under no circumstance should the unit be started without having read the brochure completely.
Ele c t ric a l c onne c t ions
Installation norms
To perform the electric installation of the unit (cable glands, conductor
section and their calculations, protections, etc.), refer to the information
provided in this document (see the technical characteristic table), the
electrical scheme included with the unit and norms in effect that regulate
the installation of air conditioning units and electrical 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 the
ground connection before any other electrical connection.
V-220004
V-220005
The installer must
fi
x line protection elements according to
the effective legislation.
Note:
Please refer to the
CARRIERrtc basic & medium
control brochure
to obtain more detailed information about its operation.
Split-system cooling units
and heat pumps
8
