Operation Sequence Of The Burner; Burner Start-Up; Ignition Failure; Burner Flame Goes Out During Operation - Riello RLS 70 Installation, Use And Maintenance Instructions

6.11

Operation sequence of the burner

6.11.1 Burner start-up

0 s TL closes, fan motor starts, (in case of oil operation,
pump motor starts)
6 s servomotor starts, maximum opening.
11 s air damper is at its maximum opening
42 s servomotor closing phase starts at the minimum output.
45 s air damper is in the ignition point position (minimum
output)
48 s ignition transformer strikes a spark
54 s 1st stage fuel valve opens
57 s ignition discharge ends
66 s with TR in 2nd stage, servomotor reaches its maximum
opening and the second fuel valve opens.

6.11.2 Ignition failure

If the burner does not fire, it goes into lockout within 3 seconds
after the valve opens and approximately 57 seconds after the TL
closes and the pre-purging phase starts and lasts 17 seconds.

6.11.3 Burner flame goes out during operation

If the flame should accidentally go out during operation, the
burner will lock out within 1s.

6.11.4 LED PANEL

It gives 6 information through the lighting up of the LEDs. See
Fig. 43.
Key:
D478
= Voltage present
= Fan motor lockout (red)
= Burner lockout (red)
= 2nd stage operation
= 1st stage operation
= Burner operation
Start-up, calibration and operation of the burner
M
M
VS
V1
MIN
V2
MAX
M
M
VS
V1
MIN
V2
MAX
35 GB
Burner start-up
IGNITION FAILURE
D489
20141124
Fig. 41
20166799
Fig. 42
Fig. 43
20148653