ZoneFirst PIRR Relay This is a Single Pole

This is a Single Pole Single Throw (SPST) relay with a Normally Open (N/O) contact

ensuring correct mechanical linkage for modulating control

Key Benefits OEM Precision: Genuine Reznor replacement part ensures exact 155°F trip point for critical safety compliance

making it the standard choice for controlling different speed taps on a blower motor based on the heating or cooling demand

7-1/2 tons with R134a

ZoneFirst PIRR Relay This is a Single PoleThe 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