there is no need for an external power source

this is specifically a 208-230V component

handling standard industrial temperature ranges

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

Lochinvar & A.O. Smith 100278106 Vent Damper 320074-702 there is no need forThe 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