6
CONN A
CONN B
_ S +
24 (S)
25 (+)
26 (-)
5.2.3 - REMOTE CONTROL
• Code 70250057.
• The functions and display are exactly the same as those on controller.
• The only difference concerns the buttons
and
which are
separated by the “ON/OFF” and “Mode” buttons.
• The controller is designed to be installed inside sheltered rooms.
• Connection:
- on the electronic control board located in the electric box (in parallel
with the box's display unit connection),
- use twisted pair shielded cable with a cross section of at least
0.5 mm
2
(shielding of the ground on unit side),
max. length: 100 meters.
CAUTION:
Do not route this cable near power cables.
The operation must take performed with the unit's power supply
off and locked out.
5.2.4 - RS 485 COMMUNICATION INTERFACE (MODBUS
protocol)
• Code 70250056.
• Secure the communication interface on the DIN rail next to the
electronic board located in the electric box.
• Connect the ribbon cable (supplied) between the interface and the
electronic control board located in the electric box.
• Connect the interface's 230 VAC power supply to terminals 1 and 2 on
the terminal strip using the Blue and Black wires supplied, as shown
opposite.
5.2.5 - 800 W ANTI-FREEZE RESISTANCE
• Code 70200010.
• Power supply and control of this resistance shall be separate from all
other installation circuits. It must be installed by qualified service
personnel who are familiar with this type of equipment and in
compliance with local regulations and recognized trade practices.
• Before all operations on the unit, make sure that the power supply
is disconnected and locked out.
• The 230 VAC electrical power supply must be fitted with a separate overcurrent protection and disconnect switch in
compliance with the rules and regulations in force.
• The power supply wiring must be secured. Use the cable gland located on the resistance cover.
- Note 1: The resistance is equipped with an adjustable limiting thermostat set at approximately 7
°
C.
- Note 2: Power to the resistance must be turned on only when the circuit is full of water.
- Note 3: Make sure that wiring is securely
clamped in the terminal block and the ground
connection is correctly attached.
Electronic control board
Remote control (rear
view)
D
GND DTR TX RX +5V
9
8
7
6
5
4
RS 485
230 Vac
1
2
3
2
1
BUS ADAPTER
Blue
Black
Ribbon cable
Electronic control board
800W
230V
2
1
PE
Thermostat
2
1
3
M5
M4
Cover
Thermostat
-35
°
C / +35
°
C
preset at 7
°
C
Phase
Neutral
Ground
