baltur BTG 15 Instructions For Use 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, 1st-stage
Mod. max. reaction time for
air proving switch
tlw
03 03 60
ONE STAGE NATURAL GAS BURNERS
CIRCUIT AND TIMING DIAGRAM DLG 976
Supervised Pre-ignition time
pre-purge time
tv1 tvz
40,5 1
43 / 87
0006080876 ed 2007/02
V2 Solenoid valve, 2nd-stage
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 2nd-stage
Post-ignition time Stray light
monitoring
tn tf
2,5 5
Safety time Delay 2 -stage
nd
ts tv2
2,8 10.2