Fuel Heating; Burner Start-Up Cycle - Riello Rc2R Montage- Und Bedienungsanleitung

4.7 FUEL HEATING

In order to obtain smooth starting and operation across its output
range the burner is fitted with an electric resistance, which heats up
the light oil in the nozzle line.
This resistance is energized when the thermostat calls for heat and
after a delay of approximately two minutes depending on room
temperature, the motor will start.
The resistance remains inserted and locks-out on the shut-down of
the burner.
ATTENTION
Should you want to cut off the electric resistance (on setting the
burner or when the ambient temperature does not require it,
etc. . .), take the plug off the panel of the control box and plug it
into the "Resistance OFF" (see fig. 21).
In this case the burner starts up when the thermostats close.
NOTE
The warning light (LED) is ON but when the resistance works. It
is OFF when the resistance is disconnected or broken.
4.8 FAILURE DETECTION ON HEATING DEVICE
NORMAL OPERATION
The plug fitted in the panel is placed in the position corresponding
to "Resistance ON"
When the remote control closes, the LED lights up and, after about
two minutes, the burner starts up.
BURNER DOES NOT OPERATE
1) If the LED is OFF, the heating resistance placed in the noz-
zle-holder is off.
2) If the LED is ON and nevertheless the burner does not run,
place the plug in the position corresponding to "Resistance
OFF" (see fig. 21).
If the motor runs, the delaying device inside the control box
is out of order.
3) If the motor does not run, it means that the failure is neither
in the panel nor in the resistance, but elsewhere.

4.9 BURNER START-UP CYCLE

Normal
Thermostat
Resistance
Motor
Ignition transformer
Valve
Flame
Lock-out lamp
2902936
(see fig. 20).
~ ~
120s 12s
Fig. 20
Resistance ON
Fig. 21
Lock-out, due to failure to light
~
120s
14 GB
Plug
Resistance OFF
Resistance OFF
~ ~
12s 5s
S7059
LED
Plug
S7060
LED
D5329