APPENDIX C - WORKING INSTRUCTIONS FOR THE GAS SAFETY SYSTEM
WORKING DIAGRAM
Thermostat
Spark
Gas valve
Flame detector device
Lock out indication
TECHNICAL SPECIFICATIONS
Classification codes according to EN298
Class of protection according to Low Voltage Directive
Waiting time / TW
Safety time / TS
Inter-waiting time / TWI
Working temperature
Nominal working voltage*
Resistance to vibration according to
*Functional approved at a voltage variation of +20% through –25%
TW TS
TS TWI TS TWI TS
A-M-R-V-X-K
IP-20
8 s
45 s
120 s
–20°C to +45°C
12 - 13,8V DC
EN60068-2-6:1995
16