baltur BTG 15P Instructions Manual page 45

GAS BURNER SAFETY CONTROL
Description
HS Mains switch
GW Gas proving switch
ST Limit thermostat
RT Control thermostat
EV External reset and lock out button
IS Ionisation probe
(IRD 1010, UVD 971 see separate diagram)
Z Ignition
M Burner motor
V1 Solenoid valve, 1
Mod. Tempo di reazione max.
per interr. contr. aria
tlw
03 03 60
TWO-STAGE GAS BURNERS
CIRCUIT AND TIMING DIAGRAM DLG 976
-stage
st
Supervised Pre-ignition time
pre-purge time
tv1 tvz
40,5 1
0006080895 ed 2007/02
V2 Solenoid valve, 2
LW Air proving switch
SA External lock out signal
tlw max. reaction time for air proving switch
tv1 Supervised pre-purge time
tf Stray light monitoring
tvz Pre-ignition time
tn Post-ignition time
ts Safety time
tv2 Delay 2 -stage
nd
Post-ignition time Stray light
monitoring
tn
2,5
43 / 88
-stage
nd
Safety time Delay 2
tf ts
5 2,8 10.2
-stage
nd
tv2