Robur Next-R, Instructions For Installation, Use And Maintenance Manual

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Electrical installer
32
4
thermoregulators must then be made, using the speci fi c USB/
RS485 converter, supplied.
How to connect OTRG005 thermoregulator
OTRG005 thermoregulator is connected as described in
Paragraph 4.4.3 p. 30.
How to make Modbus connection
1. Access the J4 connection terminal block on OTRG005
thermoregulator.
2.
Use unshielded 2x0,5 mm ² twisted cable.
3.
Connect the wires to the USB/RS485 converter terminal
block as shown in Figure 4.6 p. 32.
4. Insert the USB converter into the PC. The device drivers
will be downloaded and installed automatically if the PC is
online.
5.
For additional information refer to the instruction sheet sup-
plied with the OSWR000 Genius software.
The cable may not be longer than 1100 metres.
Figure 4.6 USB/RS485 converter connection
A A signal
B B signal
C OTRG005 thermoregulator
D USB/RS485 converter
1 2
J1
1
J2
1
2
J3
J4
J5
J6
JP
1
2
1
2
1
2
2 3 4 5
A
B
C
D
4.4.6 External request
Depending on the required operation, it is required to arrange:
▶
Request device (e.g. thermostat, timer, button, ...) equipped
with a voltage-free NO contact, used for managing start/
stop of the gas unit heater.
▶
Request device (switch) equipped with a changeover con-
tact, for managing winter/summer mode operation.
▶
Request device (e.g. button) equipped with a voltage-free
NO contact, used for managing the two gas unit heater pow-
er levels. Through the use of a 2-step thermostat or chrono-
thermostat, it is possible to unify the gas unit heater start/
stop management with the two power levels management.
For details on the position and possible presence of temporary
jumpers on terminals of the unit terminal block, refer to the wir-
ing diagrams in Paragraph 1.4 p. 15.
All the contacts for external requests of the terminal
block in the electrical panel inside the unit have a
230 V voltage applied to the relative terminals.
4.4.6.1
Gas unit heater start/stop management
How to connect the external request for gas unit
heater start/stop management
1. Access the electrical board of the appliance according to the
Procedure 4.2
p. 29.
2.
Connect the voltage-free contact of the external request,
using a 2x1 mm ² cable, to Z9-Z9 terminals of the terminal
block, as shown in Figure 4.7 p. 32.
The cable may not be longer than 20 metres.
Figure 4.7
Connection of external request for gas unit heater start/stop
management
Z9 External request (e.g. thermostat, timer, button, ...)
7
Z92 Z91
Z9
4.4.6.2
Summer/winter mode management
How to connect the external request for summer/
winter mode management
1. Access the electrical board of the appliance according to the
Procedure 4.2 p. 29.
2.
Remove the 28 temporary jumper between 1-3 terminals on
the internal terminal block.
3. Connect the voltage-free contact of the external request, us-
ing a 3x1 mm ² cable, to 1, 2, 3 terminals of the terminal block,
as shown in Figure 4.8 p. 33.
The cable may not be longer than 20 metres.