the D-3153-2 is UL recognized for use on UL 555/555S smoke and combination fire/smoke dampers with ratings up to 250°F

Replacing the worn 1190383 sensor typically restores the necessary electrical path to maintain the heating cycle

you must ensure the system is properly flushed and converted if switching between lubricant types to avoid mechanical failure

across-the-line starting and may not be suitable for VFD operation unless specifically rated for inverter duty

Resideo VCZMD6100 Valve 322838-753 the D-3153-2 is UL recognizedThe Resideo VCZMD6100 Valve is a robust 1 2" inverted flare three way cartridge cage valve designed specifically for demanding hydronic zone control in both domestic and light commercial HVACR applications. Built with a bronze body and a high grade stainless steel stem, this balanced valve assembly manages the flow of hot or chilled water with up to 60% glycol concentration. Engineered for mixing or diverting service, it features a 3. 2 Cv rating and