How do I read the diagnostics on this Carrier control board

While technical specifications for some Fenwal 35-66 series allow for field-selectable line voltage

verify your heating load and manifold requirements against the 196983 data plate to ensure precise field integration

Simplified Retrofitting: Enables advanced smart thermostat installation using only two existing wires

keeping the system within its engineered performance window

Lochinvar & A.O. Smith 100208109 Gasket 319847-401 How do I read theThe Lochinvar & A. O. Smith 100208109 Gasket is a critical OEM replacement component designed for high efficiency commercial boilers and water heaters. As a heat exch divider gasket (also known as a hex gasket for the divider panel), this 1 2 inch seal is specifically engineered for the Power Fin Model PB 502 thru 1302 heating boilers and PF 502 thru 1302 hot water supply boilers. This part provides a high temperature seal between heat exchanger