Electric Connections; Start-Up Instructions - RHOSS MICROSYSTEM TCAEY Série Mode D'emploi

II.7.2.6 Protecting the unit from frost
IMPORTANT!
If the mains switch is opened, it cuts off the
electricity supply to the plate exchanger heater and
the storage tank antifreeze heater. The switch
should only be disconnected for cleaning,
maintenance or repair of the machine.
When the unit is running, the control board protects the water-side heat-
exchanger from freezing by making the antifreeze alarm cut in, stopping
the machine if the temperature of probe fitted on the heat-exchanger
reaches the set point value.
IMPORTANT!
When the unit is out of service, drain all the water
contents from the circuit.
If the draining operation is felt to be too much trouble, ethylene glycol
may be mixed with the water in suitable proportions in order to
guarantee protection from freezing.
IMPORTANT!
Mixing the water with glycol modifies the performance
of the unit.
The table below gives the proportions of ethylene glycol which are
required to give frost protection in a range of conditions Maximum
ethylene glycol content 30%.
Projected air temperature in °C
% glycol in weight
Freezing temperature in °C
To adjust the antifreeze set point, see par. I.8.7.
II.8

ELECTRIC CONNECTIONS

DANGER!
Always install a general automatic switch in a
protected area near the appliance with a
characteristic delayed curve, sufficient capacity and
breaking power. There should be a minimum
distance of 3 mm between the contacts.
Earth connection is compulsory by law and
safeguards the user while the machine is in use.
DANGER!
Electrical connection of the unit must be carried out
by qualified personnel in compliance with the
regulations in effect in the country where the unit is
installed. Non-conforming electrical connection
RHOSS
relieves
damage to people and things.
In making the electrical connections to the board,
cables must be routed so that they do not touch the
hot parts of the machine (compressor, flow pipe
and liquid line). Protect the wires from any foam.
IMPORTANT!
For electrical connections to the unit and the
accessories, follow the wiring diagrams which are
supplied with them.
The safety door interlock automatically prevents electric power being
fed to the unit if the cover panel over the electrical panel is opened.
After removing the left-hand lower side panel of the unit, run the supply
cables through the cable clamps provided on the outside of the left-
hand part of the bodywork, and through the cable clamps at the base of
the electrical panel, being careful to avoid the hot parts inside the
machine.
Electrical connections must be made in compliance with the regulations
in force and following the wiring diagrams supplied with the unit.
The electrical power supplied by the single-phase or three-phase line,
must be taken to the main isolator switch.
2 0 -3 -6
10 15 20 25
-5 -7 -10 -13
S.p.a. from all responsibility for
The supply cable must be of the flexible type, with PVC sheathing of no
lighter than H05RN-F: for the section, refer to the table below or the
wiring diagram.
Model
Line section
PE section
Model
Line section
PE section
The earth conductor must be longer than the other conductors in order
to ensure that in the event of the cable clamping device becoming
slack, it will be the last to come under strain.
II.8.1.1 Remote management through connection
preparation by the installer
The connections between board and switch or remote light must be
made with screened cable consisting of 2 twisted 0.5 mm² wires and the
screening. The screening must be connected to the earth screw on the
panel (on one side only). The maximum permitted distance is 30 m.
SCR - Remote ON/OFF control selector.
SEI - Summer/winter selector.
LBG - General lockout light.
• Remote ON/OFF enablement (SCR)
-10
IMPORTANT!
30
When the unit is switched OFF using the remote
-16
control selector, the letters Scr appear on the on
board control panel display.
Remove the ID8 terminal bridge on the electronic board and connect
the wires coming from the remote control ON/OFF selector (selector to
be installed by the installer).
ATTENTION
• Remote summer/winter enablement on THAEY
Connect the wires coming from the remote summer/winter selector on
the ID7 terminal present on the electronic board.
At this point, alter parameter SUr from n to y (see par. I.8).
ATTENTION
• LBG remote control
To remotely control the two signals, connect the two lamps according to
the instructions provided in the wiring diagram supplied with the
machine (max. 24 Vac).
II.8.1.2 Remote management using accessories
supplied separately
It is possible to remotely control the entire machine by linking a second
keyboard to the one built into the machine (KTR accessory).
To select the remote control system, consult paragraph II.2. The use
and installation of the remote control systems are described in the
Instruction Sheets provided with the same.
II.9

START-UP INSTRUCTIONS

IMPORTANT!
Machine commissioning or the first start up (where
provided for) must be carried out by skilled
personnel from workshops authorised by
S.p.A., qualified to work on this type of product.
DANGER!
Before starting up, make sure that the installation
and electrical connections conform with the
instructions in the wiring diagram. Also make sure
that there are no unauthorised persons in the
vicinity of the machine during the above operations.
32
SECTION II: INSTALLATION AND MAINTENANCE
Supply 400V - 3ph - 50Hz
105 107
mm² 2,5 2,5
mm² 2,5 2,5
Supply 230V - 3ph - 50Hz
105 107
mm² 4 6
mm² 4 6
Open contact: the unit is OFF
Closed contact: the unit is ON
Open contact: heating cycle.
Closed contact: cooling cycle.
109 111
2,5 4
2,5 4
109 111
6 10
6 10
RHOSS