35" WC (water column)

and FAN3719

The IO HVAC Controls ZP3-HCMS-ESP is a 3-zone control panel designed for multi-stage heat/cool systems and heat pumps in residential and light commercial applications

Does this board replace the CNT1152 model

When should I replace the strainer basket

Lochinvar & A.O. Smith 100109676 Adapter 319848-301 35" WC (water column)The Lochinvar & A. O. Smith 100109676 Adapter is a critical OEM replacement part designed for field technicians servicing high efficiency water heaters and boiler systems. This 4 pin to 5 pin adapter bridges the gap between different generations of control components, typically required when upgrading a hot surface ignitor or gas valve assembly on units like the A. O. Smith BTN 80 and BTN 100 or compatible Lochinvar Knight series. In the field, you