The Reznor 196244 is the direct OEM replacement engineered specifically for these industrial heaters

The AP13A000 actuator is universal for proportional signals

Optimized Signal: Engineered to provide a clean flame sense microamp level

This mechanical thermostatic expansion valve (TXV) is specifically calibrated for R410A refrigerant and features 3/4" mechanical fittings to ensure a gas-tight seal without the need for brazing in tight cabinets

Engineered for 460V Systems: Specifically wound for commercial-grade single-phase power

Aaon R77330 Board 323080-701 The Reznor 196244 is theThe Aaon R77330 Smoke Detector Power Board, model D4P120B, is a critical OEM replacement component designed for commercial HVAC systems. Engineered for seamless integration with InnovairFlex duct smoke detectors, this 4 wire power board provides the precise voltage and current required for reliable smoke detection in high static environments. As a veteran grade HVACR control board, it supports 2: 1 sensor to board capability, allowing contractors to