The Robertshaw® 780 Series Hot Surface Controls are designed for use on gas fired systems. The system acts on a demand for heat by a switch or thermostat to supply power to the ignition control. On non pre-purge models, the igniter will be energized immediately and remain on for either of two optional selected igniter heat-up times: approximately 17 or 34 sec. For models with the prepurge option, there is a time delay equal to the heat-up time selected before the igniter is energized. At the end of the igniter heat-up time, the gas valve is opened supplying gas to the main burner. After several seconds, the igniter is turned off and the sensor is energized. As long as flame is sensed, the system continues to operate.

Robertshaw® Hot Surface Ignition Control, Series: 780, For Use With: Gas Fired System, 120 VAC, 1.5 A, Import

• Reduces truck stock inventory, saving space and money
• Easy-to-install with complete in-depth installation instructions
• Molded-in terminal barriers between terminals
• Models available for local and remote sense application
• Mounting screw provides a positive ground connection
• Small compact size provides no hassle installation
• Main valves current is 1.5 A at 24 VAC
• 95 percentage relative humidity non-condensing at 104 deg F
• -40 to 176 deg F temperature
• 8 sec valves trial
• 0.1 a thermostat anticipator setting
• 5 a maximum igniter
• 3 to 4 per sec pre-purge/ignitor warm-up timer

• https://externalassets.unilogcorp.com/ASSETS/DOCUMENTS/ITEMS/EN/Robertshaw_O10-1410_Catalog.pdf https://www.hirsch.com//ASSETS/DOCUMENTS/ITEMS/EN/https://externalassets.unilogcorp.com/ASSETS/DOCUMENTS/ITEMS/EN/Robertshaw_O10-1410_Catalog.pdf