Enhanced Reliability: The 120-second heater circuit is temperature-compensated to maintain accurate timing in varying mechanical room conditions
and R502 in suction-side monitoring
3-blade propeller features a 1/2-inch bore and a fixed hub located on the intake side (opposite discharge)
it is frequently used as emergency heat or for supplementary heating in smaller zones or warmer climates
including non-fail-safe (TR
Belimo ZONE225N-80 Valve 321894-709 Enhanced Reliability: The 120-second heaterWhen you're spec'ing out a reliable solution for hydronic applications, the Belimo ZONE225N 80 valve is a solid choice. This 2 way zone valve is engineered for precision control in fan coil units, baseboards, and other systems requiring dependable on off operation. Featuring a robust forged brass body, stainless steel stem, and EPDM seals, it's built to handle chilled or hot water, including up to 50% glycol mixtures, across a fluid temperature range