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

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Features and technical data
Installation, use and maintenance manual – Next-R
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1
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. 17).
OTRG005 thermoregulators, OCDS008 digital chronothermostat
and OSWR000 Genius software for remote management, all pro-
vide automated control of the two power levels.
In case of di ff erent control devices (OCDS012, OCTR000 or exter-
nal request), power levels must be managed by opening or clos-
ing contact 27 (Figures 1.14 p. 15 and 1.15 p. 16). 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 de-
vice, 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 fl ame lock-out and al-
lows its resetting.
It does not allow to control the switching on and o ff of the unit
for space heating, nor for the summer ventilation, nor the power
modulation.
Its functions are:
▶
Lock-out light.
▶
Reset of the fl ame lock-out.
For additional details and diagrams see Paragraph 4.4.1
p. 30.
1.6.3 OCTR000 2-key basic control
Figure 1.17
OCTR000 2-key basic control
OCTR000 2-key basic control signals the fl ame lock-out and al-
lows its resetting. In addition, it allows activating the summer
ventilation mode.
It does not allow to control the switching on and o ff of the unit
for space heating, nor the power modulation.
Its functions are:
▶
Lock-out light.
▶
Reset of the fl ame lock-out.
▶
Summer ventilation mode activation.
For additional details and diagrams see Paragraph 4.4.2
p. 30.
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 ff and change the operating mode (heating or summer venti-
lation); a serial interface also allows to create cascading systems
managed by a single chronothermostat (optional OCDS008,
described in Paragraph 1.6.5 p. 18), with considerable advan-
tages in terms of temperature control, especially in large spaces.
The main functions are:
▶
Turning the gas unit heater on/o ff .
▶
Ambient temperature measurement by NTC probe.
▶
Diagnostics.
▶
Reset of the fl ame lock-out.
▶
Gas unit heater data display and parameters setting.
▶
Space heating and summer ventilation setpoint setting.
▶
Automatic management of power modulation.
▶
Summer ventilation mode activation.
▶
Possibility of creating cascaded systems.
▶
Modbus interfacing for remote control.
For additional details and diagrams see OTRG005 thermoregula-
tor instruction sheet and Paragraph 4.4.3
p. 30.