Electrical Connections - Hitecsa CED 11.1 Instrucciones De Instalación, Funcionamiento Y Mantenimiento

I N S T A L L A T I O N
* Please note : there can be different condensing temperatures if the low ambient kit (modulating) has been fitted to the air
conditioning unit.
To properly complete the loading of the refrigeration circuit, especially in the case of air-cooled units, it is necessary to satisfy
all the design conditions regarding the temperature of the condensing liquid and that there is a sufficient heat-load within the
ambient; in this way the refrigeration circuit will operate (at ambient design conditions) for a long enough time to allow one to
verify that the entire system is running correctly.
Please note : If the installation has been loaded with refrigerant gas during the winter season, do not fully load the circuit in
order to avoid the system stopping during the summer due to high pressure.
Problems arising from an excessive loading of refrigerant gas
An excessive refrigerant gas load will result in the flooding of part of the condenser and subsequent reduction of the heat
exchange capacity of the coil. In fact, this represents a reduction in the available surface area of the condenser coil. The
condensing temperature will consequently be very high while the liquid line leaving the condenser will have a temperature
much lower than that which corresponds to the condensing pressure (as indicated on the pressure-guage).
Checking the engaged power of the compressor
Once the machine is in full operation and the maximum condensing temperature of 52°C (19 kg/cm²) has been reached
(this condensing temperature is generally the highest normally found in air-cooled units), the compressor motor will have an
input that is lower than the "FLA" (Full Load Amperes) value indicated on the identification plate of the compressor itself.
If the input is the same as or higher than the value indicated on the plate, this is the result of either wrong power supply
(excessive drop in power lines) or very high expansion and condensing temperatures due to an error in the installation or the
gas loading of the system.
WATER CIRCUIT CONNECTIONS
For all models in all configurations, it is necessary to fit within the indoor unit, a condensate discharge with a diameter of ¾".
This discharge or drain must have an adequate inclination, keeping in mind that it drains by force of gravity, and must not be
connected to other drains that are under pressure.
It is advisable to use a syphon in order to avoid return of bad odours through the discharge pipe.
For all models in all configurations that are equipped with a humidifier, it is necessary to supply to the indoor unit, normal tap
water that has not been treated. The water can be supplied through adequate plastic or PVC tubes having a diameter of
6mm with a shut-off valve fitted on the tubes.
The water supply pressure should be between 1,5 and 5 Bar.
A drain pipe, adequately inclined, must also be fitted, and have a diameter of ¾".
Warning : this drain discharges water with a temperature of about 100°C and the tube utilised must therefore be heat
resistant.
In machine configurations 1-3-5-6, condensers and cooling or heating coils that require water supply, piping should be of the
diameters and sizes for the flow rates indicated in the individual diagrams of the A/C units, as well as being adequately
insulated and fitted with shut-off valves.

ELECTRICAL CONNECTIONS

Each A/C unit is supplied with its own electrical wiring diagram and all wiring connections are to be effected following the
indications of the wiring diagram itself. The wire sections must be of adequately sized in relation to the power of the unit and
the length of the line in order to maintain within prescribed limits any drop in power supply.
The power supply line must be protected against short-circuit.
If both internal and external units are requested to be supplied without main switches, the contractor installing the equipment
must fit main switches near both the internal and external units (in accordance with the safety norms current in the country
where the units are installed).
38 05.08 Ref.200989 Rev.100