The internal EPDM O-rings and PTFE seats are rated for use with water/glycol mixtures containing up to 60% glycol by volume

Attempting to run it on 230V will result in insufficient torque and motor stall

Technicians typically observe ignition failure codes

The Lennox 13W13 Blower Relay is a genuine OEM 24V furnace fan control relay designed for precise blower motor activation in residential and light commercial HVAC systems

providing a modern interface for Honeywell T775 series applications where reliability and wide 150°F throttling ranges are technical requirements

Lochinvar & A.O. Smith 100278106 Vent Damper 320074-702 The internal EPDM O-rings andThe Lochinvar & A. O. Smith 100278106 Vent Damper is a critical OEM replacement component designed specifically for 7 inch flue applications. Engineered for compatibility with RB RW225 270 boiler and water heater models, this automatic vent damper enhances system efficiency by preventing standby heat loss through the stack. When the burner cycle completes, the motorized actuator closes the baffle, trapping residual heat within the heat exchanger to