SPLIT-SYSTEM COOLING UNITS AND HEAT PUMPS
38HB/HF & 40HB/HF
Unit components
-- Casing made of galvanised steel metal with polyester
paint, white colour RAL 7035. Self-supporting frame.
-- Removable panels for facilitating rapid access.
■■ Outdoor air circuit
-- Centrifugal fan with coupling by pulleys and belts.
Electric motor(s) with tensioner, class F, IP55 and
internal thermal protection. Double-intake turbines,
with an impeller with front-curved blades. Greased
spherical bearings, with no maintenance required.
-- Anti-bird grille.
-- Coil with copper pipes and aluminium fins.
-- Condensates drain pan.
■■ Cooling circuit
-- Hermetic scroll-type compressor, assembled over
antivibrations mounts. Control of phase equilibrium
and the direction of rotation.
-- Crankcase heater.
-- Thermostatic expansion valve with external
equalisation and a check valve (heat pump units).
-- 4-way valve for cycle reversing (heat pump units).
-- Anti-acid dehydrating filter and liquid sight glass.
-- Cooling connections for welding.
-- Maximum length equivalent to the 30-metre cooling
line (for longer distances, consult options).
■■ Protections
-- High and low pressure pressostats.
-- Compressor discharge temperature control.
-- Non-return valve built into the compressor.
-- Main door switch.
-- Magnetothermic protection switches for the
compressor power line and fan motor.
-- Automatic switch in the control circuit.
■■ Electric panel
-- Complete and fully wired electrical panel.
-- Transformer for power supply without neutral included
in the electrical panel.
-- Main ground connection.
-- Compressor contactors and fan motors.
-------
Modification of the setpoint.
Permanent control of the operating parameters.
View of the values measured by the sensors.
View of the alarms produced by means of codes.
Timing of the compressors.
Control of the compressor discharge temperature by
probe.
-- Control of the ambient temperature thanks to the
probe incorporated into TCO terminal. This probe can
be replaced by an return or ambient probe that would
be installed in the control board.
-- Control of the outlet temperature
to improve thermal comfort level
of the installation.
• In cooling mode this control
prevents excessively significant
drops in the ambient temperature.
• In heating mode, it prevent the stratification of the hot air
masses.
-- The following features improve the energy
management of the installation:
Defrosting management (in heat pump units).
Possibility of intelligent defrosting that reduces
energy consumption of the heat pump, by
adjusting the time between defrosting operations
to the actual needs of the unit.
Compensation of the setpoint based on the
outdoor temperature. This function prevents
thermal “shock” between the inside and outside
of the premises whilst at the same time provides
significant energy savings
Time schedule that reduces energy consumption,
adjusting the needs of air conditioning of the
building throughout the day.
TCO terminal has a schedule programmer with an
intuitive graphic interface that allows 6 time slots
to be chosen for each day of the week. A change
in the setpoint temperature or the disconnection
of the unit can be scheduled in these time slots
(according to the building occupancy).
■■ CARRIERrtc basic electronic control
This control is an electronic module with microprocessor comprised
of a control board and a TCO user terminal that ensures the following
functions:
AIR TREATMENT
Outdoor unit 38HB/HF
•
HEATING
•
COOLING
•
AUTO
•
DEHUMIDIFICATION
•
FAN (no icon).
C
A
R
R
I
E
R
2
0
CONTROLS
-- Selection of the operating mode:
1
6
/
2
0
1
7
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