Robur K18 Hybrigas, Installation, Use And Maintenance Manual, Page: 36 / 60

Electrical installer
36
4
How to connect the OQLT019 controller
Connection of OQLT019 controller is made on the wiring
terminal block located in the Electrical Panel inside the
unit.
1. Access the Electrical Board of the appliance according to the
Procedure 4.2
p. 34.
2. Refer to the OQLT019 controller Installation Manual for the
actual wiring instructions.
OCDS007 Ambient chronothermostat (optional)
(System (2) see also Paragraph 1.8
p. 21)
How to connect the OCDS007 chronothermostat
Connection of OCDS007 is made on the wiring terminal
block located in the Electrical Panel inside the unit.
1. Access the Electrical Board of the appliance according to the
Procedure 4.2 p. 34.
2. Perform connections as shown in the diagram in Figure
4.3
p. 36 and in Figure 4.4 p. 36.
3. Use shielded cable 2x0.75 mm² (or 4 x 0.75 mm² if the alarm
indication signal is included), connecting the shield to one
of the ground terminals provided on the appliance electrical
panel.
4. The connection cable must be kept separate from mains
voltage cables.
The cable may not be longer than 30 metres.
External request
(System (3) see also Paragraph 1.8 p. 21)
It is required to arrange:
▶
request device (e.g. thermostat, clock, button, ...) fitted with
a voltage-free NO contact.
How to connect the external request
Connection of external request is effected on the termi-
nal board located in the Electrical Panel inside the unit.
1. Access the Electrical Board of the appliance according to the
Procedure 4.2 p. 34.
2. Connect the voltage free contact of the external device,
through two conductor wires, to terminals COM and REQ
(respectively: common and heating request) of the internal
terminal board (Figure 4.5 p. 36).
3. Use shielded cable 2x0.75 mm², connecting the shield to one
of the ground terminals provided on the appliance electrical
panel.
4. The connection cable must be kept separate from mains
voltage cables.
The signal is SELV (Safety Extra Low Voltage). The volt-
age-free contact of the external device that gives the
request must have double or reinforced insulation with
respect to line voltage parts.
The cable may not be longer than 30 metres.
Figure 4.3
Connection diagram (Request signal) to OCDS007
chronothermostat
Figure 4.4
Connection diagram (alarm indication signal) to OCDS007
chronothermostat
Figure 4.5
Wiring diagram, external enable connection
COM common
REQ heating request
Components NOT SUPPLIED:
CS external request