Hydraulic Connection; Description Of The Unit - CombiSteel 7480 Serie Mode D'emploi

HYDRAULIC CONNECTION

This paragraph deals with the connection of the water condensers (only for the units provided with them) and
of the condensed water drains. To connect the condensers you have to use pipes with a 3/8" diameter (except
in the Wall-mounting units forms 4 and 5 in which the pipe diameter is 5/8") that have to be inserted in the
machine tapers respecting the inlet and outlet indications. These machine tapers are to be screwed tightly so as
to be sure that water cannot enter them.
Place the interception tap of the water feed line within the reach of the user.
To improve the efficiency and the working service of the unit verify if:

the water temperature is between 20 and 30°C for the units with condensation by tower water and
between 5 and 20°C for the units with condensation by well water;

the water pressure is between 1 and 5 bar.
The drains are joined in the following points:

in the Wall-mounting and Straddle units (forms 1, 2 and 3) under the condensing side on the right (fig.
5-1);

in the Wall-mounting units (forms 4 and 5) under the condensing side in its middle point near the wall
(fig. 5-2);

in the Ceiling units, where the water is thrown away, on the evaporator by using the pipe that lies on
the front or back side of the basin (fig. 5-3);

in the Ceiling units with water drain evaporation basin on the condensing side under the condensing
battery (fig. 5-4);

in the Split, Bi Block and Evaporating units on the evaporator by using the union fixed in the lower point
of the basin (fig. 5-5).
 The water drainpipe has to lean at least 3 cm every metre in length.
 As regards the models, where the water is thrown away, we have to underline that the draining tract in the
cold room has to be as short as possible and a slope even greater than that above-mentioned has to be
guaranteed: this will be useful to avoid icing up.
 On all models, which are not provided with a condensed water drain evaporation basin, a syphon has to be
made on the draining tract outside the cold room (fig. 5-6) and furthermore, if the temperature of the
installation place falls below 0°C, it is necessary to insulate the drainpipe.
N.B. An incorrect installation could cause injuries to people and damages to things for which the manufacturer
cannot be considered responsible.

DESCRIPTION OF THE UNIT

The main components are indicated in the fig. 6-A.
Description of the controls and of the instruments on the switchboard front panel fig. 6-B.
6-1 - Electronic instrumentation (electronic control panel or instrument): you can find the corresponding
instructions in the enclosed handbook.
6-2 - Main switch (in the units provided with an electronic control panel it lies in the keyboard): it is used to
supply the auxiliary circuit.
6-3 - Cold room light switch (in the units provided with an electronic control panel it lies in the keyboard): it is
used to supply the cable that is to be connected to the lamp for the cold room illumination.
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