Burner Operating Sequence (Gas Operation) - Riello RLS 810/E FGR Installation, Use And Maintenance Instructions

4.13

Burner operating sequence (GAS OPERATION)

X07
X06
X10
X05
X08
X20+X21
FGR
X32
X33
X34
X04
X03
X01
X02
X25
X24
Key to layout (Fig. 7)
Any condition
t1 Waiting time for safety circuits consent
(boiler fuel)
t2 Opening time of the gas valve (with
sealing control active)
t3 Servomotor opening time
t4 Activation time FGR servomotor
t5 Pre-purge time
t6 Pre-ignition time
t7 Ignition flame safety time
t8 Flame stabilization time
nd
t9' Safety time 2
t10 Modulation phase
t11 Adjustment time
t12 Opening time of the gas valve (with
sealing control active)
t13 Post-purge time
t15 Post-combustion time
t16 Checking time for flame extinction
t17 Checking time for gas valve (with seal-
ing control active)
20171988
Technical description of the burner
adjustable
adjustable
adjustable
stage
adjustable
adjustable
Key to layout (Fig. 7)
FGR FGR release
X01 Gas valve 1
X02 Gas valve 2
X03 Pilot valve
X04 Ignition transformer
2.4 s
X05 Gas pressure > min.
X06 Gas safety circuit
30/60 s
X07 Boiler safety circuit
0 - t5
X08 Air pressure switch
X10 Burner ON
X20+X21 Flame signal
X24 Fault
3 s
X25 Fan ON
X32 Air servomotor
3 s
X33 Fuel servomotor
X34 FGR servomotor
3 s
5 s
30 s
Tab. H
14 GB
S9612
Fig. 7