Laars Heating Systems RTXD7109 Replace Kit 321894-709 Standard field practice dictates replacing

Standard field practice dictates replacing the bi-flow drier whenever the sealed system is opened for repairs

particularly within the Knight and Armor series

this SPST (Single Pole Single Throw) control features a close on pressure rise logic

a light almond full-window cover

Laars Heating Systems RTXD7109 Replace Kit 321894-709 Standard field practice dictates replacingThe Laars Heating Systems RTXD7109 Replace Kit is a direct OEM solution for restoring the Neotherm Wave 3 4A control architecture. Engineered for high efficiency condensing boilers and volume water heaters, this Neotherm Module Replace Kit serves as the central processing unit for system modulation and safety logic. As a veteran grade HVAC replacement part, it handles critical functions including integrated PID temperature control, direct spark