This HVAC delay timer typically features a 1-second delay-on-make and a 30-second delay-on-break to coordinate multi-stage cooling and protect the system from rapid cycling

the "EF" prefix indicates an explosion-proof enclosure suitable for NEMA 7 and 9 ratings

which is identical to the Honeywell 4074EYL/U model

Operating at 265V (single phase)

Does this kit include the rubber isolation grommets

Resideo HYDROSEP-102-U Hydraulic Separator Union 321894-709 This HVAC delay timer typicallyThe Resideo HYDROSEP 102 U is a 1 inch magnetic hydraulic separator union engineered for high performance hydronic flow management. This field proven low loss header effectively de couples the primary boiler circuit from secondary distribution loops, preventing pump conflict and ensuring stable head pressure across varying load demands. Constructed with vernished FE360 steel, it features an integrated AlNiCo magnet for aggressive magnetite removal and