ZoneFirst PIRR Relay or improper venting that forces

or improper venting that forces flames or hot flue gases out of the burner opening

As a veteran-grade general purpose limit switch

Does this unit require a neutral wire for installation

Professionals typically find this limit control in Rheem and Ruud condensing units

Designed with a 5-inch insertion length and a standard 1/2" NPT external thread

ZoneFirst PIRR Relay or improper venting that forcesThe ZoneFirst PIRR is a 24Vac 4PDT Plug In Relay engineered as a direct high performance replacement for RR and RMABS relays. Designed for immediate integration into the 4PDR relay socket, this "ice cube" style component is a fundamental requirement for maintaining legacy electromechanical zone control panels, including older TAT Mark IV, V, VII, VIII, XXXI II, and MM 2 3 systems. This relay features gold flashed silver alloy contacts rated for 3A at