Features and technical data
Installation, use and maintenance manual – Next-G
21
1
(OTRG005 thermoregulator with or without OCDS008 dig-
ital chronothermostat and OSWR000 Genius software for
remote management).
The supported service request types are:
▶
standby
▶
ventilation
▶
fixed power heating
▶
fixed power heating, with fixed setpoint (settable,
Paragraph 5.4
p. 48) and room temperature meas-
ured by the appliance via the supplied room probe
▶
modulating heating, with fixed setpoint (settable,
Paragraph 5.4
p. 48) and room temperature meas-
ured by the appliance via the supplied room probe
▶
fixed power heating, with setpoint from 0-10 V input
and room temperature measured by the appliance via
the supplied room probe
▶
modulating heating, with setpoint from 0-10 V input
and room temperature measured by the appliance via
the supplied room probe
▶
modulating heating, with the 0-10 V input providing
the required power level as a percentage of maximum
power
1.6.3
Automatic destratification function
In the operating modes in which the heating service is
based on the room temperature (measured by the control
system or directly by the room probe connected to the
gas unit heater) it is possible to activate the automatic de-
stratification by installing the destratification temperature
probe, configuring parameter P46 to value 1 (Paragraph
5.4
p. 48) and setting the parameters relative to the
minimum temperature difference above which the strat-
ified heat can be used (P80, Paragraph 5.4
the maximum destratification time (P81, Paragraph
The destratification operation is activated when a room
temperature below the setpoint is detected and the gas
unit heater detects, via the destratification probe, that
there is sufficient stratified heat to be used instead of
starting the gas unit heater for heating.
In destratification mode, the gas unit heater will only turn
on the fans, keeping the burner off, until there is sufficient
stratified heat to be used or the maximum destratification
time has elapsed, after which if the room temperature is
still insufficient the destratification function will be inter-
rupted and the burner started for normal heating.
In the absence of the OCDS015 Modbus remote control
or of a generic Modbus controller that manages the deac-
tivation of the destratification function, to deactivate the
function it is necessary to set parameter P46 to the value
0.
1.7
CONTROLS
1.7.1
Control device
The appliance may only work if it is connected to a control
device, selected from:
1. OCDS015 Modbus remote control
2. Generic Modbus controller
3. OCDS012 1-key basic control
4. OCDS016 2-keys basic control
5. OTRG005 thermoregulator
6. OCDS008 digital chronothermostat (only in associa-
tion with OTRG005 thermoregulator)
7. OSWR000 Genius software for remote management
of gas unit heaters (only in association with OTRG005
thermoregulator)
8. External request
1.7.2
OCDS015 Modbus remote control
The OCDS015 remote control is an optional control device
with a colour touch screen that allows centralised man-
agement of the Next-G gas unit heaters, up to a maximum
of 30 gas unit heaters even divided over a maximum of 6
zones.
The main functions are:
▶
Programmed on/off switching of the gas unit heaters,
up to a maximum of 30.
▶
Possibility of dividing the connected gas unit heaters
into several zones, up to a maximum of 6, each with
its own setpoint, operating mode and time program-
ming.
▶
Management of the automatic destratification func-
tion.
▶
Space heating and summer ventilation setpoint set-
ting.
▶
Antifreeze function.
▶
Summer ventilation mode activation.
▶
Centralised control with touch interface.
▶
Diagnostics.
▶
Possibility to interface with a BMS system.
▶
Possibility of temporarily excluding one or more appli-
ances from operation.
1.7.3
Generic Modbus controller
The Next-G gas unit heaters can interact directly with a
generic Modbus controller on which the registers re-
quired to control the gas unit heater itself have been ap-
propriately configured.
Depending on the registers managed on the Modbus
controller, the relevant functions will be available or not
(switching the gas unit heater on/off, choosing the oper-
ating mode, error reporting and reset, ...).
The document describing the mapping and
meaning of the Modbus registers implemented
on the GEN10 board is available on-demand from
Robur technical service.
