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OEM Thermal Calibration: Factory-set 140°F trip point provides accurate over-temperature protection matched to specific York heat exchanger tolerances
making it suitable for high-pressure refrigerants and hot water applications
Enhanced System Reliability: Corrects motor alignment issues that lead to inducer wheel dragging and motor bearing stress
Avoid mounting with sample line connections facing upward to prevent moisture or debris accumulation
Resideo VR8300A4508 Valve Refrigerant OEM Thermal Calibration: Factory-set 140°FThe Resideo VR8300A4508 is a professional grade 3 4" 24VAC standing pilot dual automatic combination gas valve engineered for single stage heating systems. This high capacity dual safety shutoff gas valve is rated for 1 2 psi and supports a wide operational range from 30,000 to 290,000 BTUh. Designed with a straight through body pattern and flange, it serves as a robust standing pilot ignition control replacement for legacy units. The integrated
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