United Electric J21K-254-1520 Pressure Switch 326058-757 The Reznor 258319 Control Board

The Reznor 258319 Control Board is a critical OEM replacement part engineered specifically for Reznor Varidigm heating and ventilation systems

Optimized Power Output: Provides a consistent 40VA rating

High Pressure Compatibility: Designed to handle the rigorous Maximum Operating Pressure Differential requirements of R-410A solar and refrigeration systems

Key Benefits Broad Compatibility: Serves as a direct millivolt system replacement for Robertshaw TP-75 and competitive 2-lead models

eliminating the need for limit switches and increasing long-term reliability in demanding mechanical room applications

United Electric J21K-254-1520 Pressure Switch 326058-757 The Reznor 258319 Control BoardDesigned for mission critical chiller and compressor oversight, the United Electric J21K 254 1520 is a heavy duty differential pressure switch engineered to detect pressure variations between two distinct sources. Featuring a 0 90 PSI adjustable range (psid), this unit utilizes high sensitivity phosphor bronze bellows to monitor filter status and verify proof of flow in demanding HVACR environments. The 1520 option integrates a specialized adjustable