Normal operation
50
6
Table 5.10
Parameters to be configured without a Modbus control
Features
Parameters to be set
Additional components
Summer ventilation
P54 (fixed) speed value to be used for the
summer ventilation function
-
Fixed power heating (2 power levels)
P56 = 0
-
Fixed power heating (2 power levels), with fixed setpoint and room tem-
perature measured by the appliance via the supplied room probe
P45 = 1
P53 room setpoint
P56 = 0
-
Modulating heating, with fixed setpoint and room temperature meas-
ured by the appliance via the supplied room probe
P45 = 1
P53 room setpoint
-
Fixed power heating (2 power levels), with setpoint from 0-10 V input
and room temperature measured by the appliance via the supplied room
probe
P45 = 1
P48 = 1
P49 setpoint corresponding to 0 V
P50 setpoint corresponding to 10 V
P56 = 0
0-10 V input signal
Modulating heating, with setpoint from 0-10 V input and room tempera-
ture measured by the appliance via the supplied room probe
P45 = 1
P48 = 1
P49 setpoint corresponding to 0 V
P50 setpoint corresponding to 10 V
0-10 V input signal
Modulating heating, with the 0-10 V input providing the required power
level as a percentage of maximum power
P48 = 2
0-10 V input signal
6
NORMAL OPERATION
This section is for the end user.
6.1
WARNINGS
General warnings
Prior to using the appliance carefully read the
warnings in Chapter III.1
p. 4, providing impor-
tant information on regulations and on safety.
First startup by TAC
First start-up may exclusively be carried out by a
Robur TAC (Chapter 5
p. 44).
Never power the appliance off while it is run-
ning
NEVER power the appliance off while it is running
(except in the event of danger, Chapter III.1
since the appliance or system might be damaged.
6.2
SWITCH ON AND OFF
Routine switching on/off
The appliance may exclusively be switched on/off
by means of the suitably provided control device.
Do not switch on/off with the power supply
switch
Do not switch the appliance on/off with the power
supply switch. This may be harmful and dangerous
for the appliance and for the system.
Checks before switching on
Before switching on the appliance, ensue that:
gas valve open
appliance electrical power supply (main switch ON)
connection and any necessary power supply of the
control device
After a long period of unit inactivity or at the first
start-up, it may be necessary to repeat the ignition
operation due to the presence of air in the gas
piping.
6.2.1
OCDS015 Modbus remote control
Refer to the instructions in the relevant manual.
6.2.2
Generic Modbus controller
Refer to the instructions in the relevant manual.
6.2.3
OCDS012 1-key basic control and external
request
6.2.3.1
Space heating activation
1. Activate the "HEAT." contact via the provided control
device (thermostat, chronothermostat or voltage-free
contact).
2. After the purge time (around 30 seconds), the gas so-
lenoid valve opens and the burner ignites.
3. When the flame is detected, the control box keeps the
gas valve open.
4. Otherwise, the control unit will try the ignition again
