3 Zone - ZSR Z-one Multi Zone Relay


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  • ZSR Z-one™ Relay (multi-zone)
  • Multi-zone pump and boiler operating control for multiple zone hydronic heating systems
  • Interfaces with low voltage thermostats or any other low voltage controllers having a switching action
  • Controls from 3 to 6 heating circulator pumps (model dependent)
  • Primary pump with LED indicators to provide functional status and easy system troubleshooting
  • Primary pump system circulator is switched on whenever any zone calls for heat
  • Power supply: 120 VAC 50/60 Hz
  • Transformer voltage: 24 VAC
  • Max transformer load: 12 VA (ZSR103 and ZSR104) 20 VA (ZSR106)
  • Electrical switch rating: 20 A max combined
  • Electrical switch rating pump output: 120 VAC, 5 A each
  • Dry contact rating (AUX, XX, ZONE1 E/S): 120 VAC max, 2 A each
  • Replaceable fuses: Type 2AG, 5 A slow blow