This unit features a 1/2 inch NPT conduit connection with 18-inch flying leads

If the HVAC blower is running but there is no heat

this Robertshaw 10-660 serves as a thermal cut-off

or a clogged filter causing the plenum temperature to exceed the 220°F threshold

Fenwal 35-63J103-017 Control Els PW 17895 This unit features a 1/2The Fenwal 35 63J103 017 Control is a specialized 24 VAC intermittent pilot ignition control engineered to serve as a direct fit Johnson G77x replacement. For contractors managing legacy systems, this module provides a seamless transition by matching the exact footprint, mounting hole patterns, and wiring configurations of the discontinued Johnson Controls G77x series. This microprocessor based control features a 0 second prepurge and an 85 second