Venstar VST3900 Thermostat L99H008 Designed for durability in demanding

Designed for durability in demanding commercial environments

it is a versatile water heater thermostat cross-referenced to replace parts from Apcom

Constructed from corrosion-resistant heavy-gauge steel

the pilot ignition port should be mounted approximately 1/4 inch above and 1/4 inch away from the center of the nearest main burner port to ensure a reliable thermocouple millivoltage output

What is the maximum contact load for the SPDT switch

Venstar VST3900 Thermostat L99H008 Designed for durability in demandingThe Venstar VST3900 is an enterprise grade programmable thermostat designed for high performance multi stage HVAC systems. As the direct replacement for P374 1500 and P374 1900 legacy units, it offers backward compatibility while upgrading system control. This 7 day programmable digital thermostat supports 3 heat and 2 cool stages, making it compatible with gas electric or heat pump systems, including those with auxiliary heat. Field technicians value