Electric Connection - CombiSteel 7480 Serie Mode D'emploi

ELECTRIC CONNECTION

The electric connection has to be executed by skilled workers who have the necessary technical qualifications
established by the country where the unit is installed.
Control that the voltage on the line corresponds with that indicated on the label fixed to the supply cable of the
unit. The supply cable has to be well spread out (avoid rolling up or placing over), in a place not exposed to
possible hits or tampering done by minors and it has not to be near liquid or water and heat sources, it has not
to be damaged (if it was damaged, it should be replaced by skilled workers).
Use supply cables of the type and with the section suggested by the manufacturer, as indicated in the relative
table (tab. 3). In case of replacement of the supply cable, make sure that the protection against the water
penetration has been respected.
The electric supply system has to be provided with earth fault breaker or with a general automatic switch with
an efficient floor outlet. If there is not any electric safety, an omni-polar switch has to be installed by skilled
workers according to the safety regulations in force, with an opening distance of the contacts equal or superior
to 3 mm. The manufacturer disclaims all responsibility, if these accident prevention-regulations are not observed.
In the Split models the condensing unit has to be connected with the evaporator: the cable that has to be used,
whose characteristics are indicated in the relative table (tab. 3), is that coming out from the left side of the
condensing unit.
In the Bi Block models the condensing unit has to be connected with the evaporator: the cable (not supplied)
that has to be used is indicated in the relative table (tab. 3).
The connection of the evaporator of the Split units has to be executed as follows:
Remove the screws on the front side of the basin (fig. 4-1) so that those lying on the back side could act as a
pivot and consequently the part to which the fans are fixed could open (fig. 4-2). Take the lid off the connection
box (fig. 4-3), make the cables pass through both the cable glands that lie on the flank and through those lying
on the connection box (fig. 4-4). Then execute the connection respecting the numerations indicated on the wires
and on the terminal board labels. Tighten the cable glands so that the cables inside the evaporator could be well
taut, close the connection box again and finally close the evaporator frame by using the screws previously
removed.
The connection of the evaporator of the Horizontal Bi Block units forms 1, 2, 3a has to be executed by following
the same instructions concerning the connection of the evaporator of the Split units.
After having connected the evaporator, connect the condensing unit in the following way:
remove the unit front panel (fig. 4-14). Open the switchboard. Make the cables pass through both the cable
glands that lie on the right flank of the condensing unit and through those lying on the right flank of the
switchboard (fig. 4-15); then execute the connection by respecting the numerations indicated on the terminal
board. Close the switchboard and install the front panel again.
The connection of the evaporator of the Bi Block units and Horizontal Bi Block units forms 3b, 4, 5 has to be
executed as follows:
take the right side of the evaporator off (fig. 4-5) and open the electric connection box (If the boxes are more
than one, the connection box is always the lowest one). Open the switchboard of the condensing unit (in the
units form 6 you have to open the panel set below on the left side of the unit, then open the plastic boxes). Insert
the cables in the protection pipes (fig. 4-6), then carry out the connection respecting the numerations indicated
on the terminal board of the condensing unit switchboard and of the connection box of the evaporator as
indicated in the wiring diagram.
Cold room light cable (present on all units except the Split, Bi Block and Condensing units): has to be connected,
by respecting the polarities, with the lamp holder supplied with the unit that should be already positioned (see
paragraph "INSTALLATION"). Insert the lamp supplied in the lamp holder; in case of replacement of the lamp,
use an incandescent lamp with a highest power of 60 W. A peak load of 200 W can be connected to the cable.
7
www.combisteel.com