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a reduced pressure zone (RPZ) or double check valve assembly is required
The unit operates on 24 VAC or 24 VDC
Durable Construction: High-quality aluminum housing provides long-term reliability in demanding HVACR environments
making it an essential solution for head pressure control in demanding commercial environments
Using this valve with other refrigerants will result in erratic superheat and potential compressor damage
Nordyne 903107 Roof Jack Extension Refrigerant a reduced pressure zone (RPZ)Optimizing a standard HVAC venting system often requires precise adjustments to the vertical stack height to clear local structural obstructions or meet specific residential building codes. The Nordyne 903107 Roof Jack Extension provides a rugged 18 inch internal roof jack extension designed to bridge the gap between your furnace or mobile home heating system and the exterior roof jack assembly. Engineered for rigorous duty cycles, this HVAC