Robur Next-R - Operation Mode; Controls

Features and technical data
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1.5 OPERATION MODE
The Next-R gas unit heater can be operated on two burner
power levels (maximum and minimum), keeping the fan
speed constant.
To select the power level it is necessary to use a suitable
control device (Paragraph 1.6 p.22 ).
OTRG005 thermoregulators, OCDS008 digital chronother-
mostat and OSWR000 Genius software for remote man-
agement, all provide automated control of the two power
levels.
In case of dierent control devices (OCDS012, OCTR000
or external request), power levels must be managed by
opening or closing contact 27 (Figures 1.14 p.20 and
1.15 p.21 ). In detail:
▶ contact 27 closed: maximum power operation
▶ contact 27 open: minimum power operation
1.6 CONTROLS
1.6.1 Control device
The appliance may only work if it is connected to a control
device, selected from:
1. OCDS012 1-key basic control
2. OCTR000 2-key basic control
3. OTRG005 thermoregulator
4. OCDS008 digital chronothermostat (in association
with OTRG005 thermoregulator)
5. OSWR000 Genius software for remote management
of gas unit heaters (in association with OTRG005
thermoregulator)
6. External request
1.6.2 OCDS012 1-key basic control
Figure1.16 OCDS012 1-key basic control
OCDS012 1-key basic control signals the ame lockout
and allows its resetting.
It does not allow to control the switching on and o of the
unit for space heating, nor for the summer ventilation, nor
the power modulation.
Its functions are:
▶ Light signalling the status of the ame lockout.
▶ Reset of the ame lockout.
For further details and diagrams see Paragraph
4.4.1 p.36 .
1.6.3 OCTR000 2-key basic control
Figure1.17 OCTR000 2-key basic control
OCTR000 2-key basic control signals the ame lockout
and allows its resetting. In addition, it allows activating
the summer ventilation mode.
It does not allow to control the switching on and o of the
unit for space heating, nor the power modulation.
Its functions are:
▶ Light signalling the status of the ame lockout.
▶ Reset of the ame lockout.
▶ Summer ventilation mode activation.
For further details and diagrams see Paragraph
4.4.2 p.36 .
1.6.4 OTRG005 thermoregulator
Figure1.18 OTRG005 thermoregulator
The thermoregulator is a device that can directly manage
gas unit heaters: the simple and intuitive display interface
allows the user to change the control parameters, manage
the power on/o and change the operating mode (heat-
ing or summer ventilation); a serial interface also allows
to create cascading systems managed by a single chron-
othermostat (optional OCDS008, described in Paragraph
1.6.5 p. 23 ), with considerable advantages in terms of
temperature control, especially in large spaces.
The main functions are:
▶ Turning the gas unit heater on/o.
▶ Ambient temperature measurement by NTC probe.
▶ Diagnostics.
▶ Reset of the ame lockout.
▶ Gas unit heater data display and parameters setting.
▶ Space heating and summer ventilation setpoint set-
ting.
▶ Automatic management of power modulation.
▶ Summer ventilation mode activation.
▶ Possibility of creating cascaded systems.
▶ Modbus interfacing for remote control.