Hitecsa CLOSE CONTROL CED Série Mode D'emploi page 43

S T A R T I N G U P
START-UP OF ELECTRIC HEATERS AND HUMIDIFIER SECTION
The A/C units will operate only if the settings, with respect to ambient conditions, require it, regardless of whether the units
are equipped with a microprocessor controller or a plain electrical control.
Once the units have been started-up, check that the input power of the various components do not exceed design values.
Be sure that the safety thermostats for the electric heaters have been set at about 70-80°C.
The humidifiers must be supplied with normal, domestic tap water, and the tubes should be of plastic or PVC (RILSAN) with
a diameter of 6mm. Pressure should be contained between 1,5 and 5 bar.
The supply water to the humidifier should not be treated chemically or otherwise.
N.B. When connecting tubes to the humidifier, make sure that no dirt or other material remains in the tubes. Ideally, after the
unit has been started-up and made to operate for a little while, remove the solenoid valve of the humidifier, drain a little
water, clean the base and the valve as well as the filter in order to ensure that no material or dirt has remained within the
tubes (otherwise this could damage the valve and the valve-base and cause leakage).
For further information regarding the humidifier refer to the specific manual and the indications of the humidifier
manufacturer.
REFRIGERANT GAS CHARGE FOR THE VARIOUS UNITS
For those units that have separate condensers (remote condensers or split condensing units), the values indicated refer to a
distance of about 10 metres between indoor unit and outdoor unit.
For circuits that are greater than 10 metres, the amount of refrigerant gas should be increased according to the length and
size of the piping.
For each kg. of gas added to fill the piping, 50/80 gr. of non-freeze oil for the compressor should added. The quantity
of oil depends on how the system has been installed, whether it allows the return of the oil to the compressor more or less
easily.
THE TYPE OF OIL IS ALWAYS INDICATED ON THE COMPRESSOR LABEL - the type is SHELL, usually Suniso Oil
3G when the refrigerant gas is R22.
If R407c or R134a is used, the oil is Polyester (POE), usually EAL Artic 22CC Mobil or EMKARATE RL32S ICI (these
oils used for the same gas can be mixed). Great care should be taken that the oils do not come into contact with the air
and that the piping has been perfectly dried.
Keep in mind that in systems that have lengthy and extensive pipe work and/or are equipped with larger condensers than
normal, it is advisable to fit in the circuit an extra liquid receiver in order to better handle the larger quantity of refrigerant gas
that has been loaded. This should allow the possibility of gathering all the gas in the receivers in case of maintenance or
specific repair work to the system.
44 05.08 Ref.200989 Rev.100