SPLIT-SYSTEM COOLING UNITS AND HEAT PUMPS 38HB/HF & 40HB/HF
Outdoor unit 38HB/HF
Casing made of galvanised steel metal with polyester paint, white colour RAL 7035. Self-supporting frame. Removable panels for facilitating rapid access. 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). 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. 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:
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Selection of the operating mode: HEATING COOLING AUTO DEHUMIDIFICATION FAN (no icon).