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4 Zone Expandable Switching Relay w/ Priority (ZSR104)

$259.91

The ZSR series is a zone pump and boiler operating control for multiple zone hydronic heating systems. The ZSR series interfaces with low voltage thermostats, or any other low voltage controllers having a switching action.

5 in stock

SKU: 5335 Categories: , ,
  • Compatible with 2, 3 and 4-wire thermostats or other low voltage controllers with switching action
  • 120 VAC input
  • Heavy duty, sealed, fuse protected relay (with spare fuse)
  • 1 primary pump output and 3 to 6 (model dependent) zone pump outputs (120 VAC/5 A each)
  • Zone priority selectable with 1-hour time-out feature
  • Convenient R,W,C and T,T,COM dual labeling at thermostat terminals
  • DHW (ZR/ZC) dry contacts rated for switching line voltage
  • High capacity 12 VA or 20 VA transformer (model dependent)
  • Automatic resettable fuse on 24 V circuit
  • Selectable post purge
  • Selectable pump exercising
  • 3 pump ground terminals for simplified wiring
  • Expandable to unlimited number of zones using simple 3-wire connection between controls
  • Large screw terminals for ease of wiring
  • Front panel LED indicator light for functional status
  • ETL certified to CSA and UL standards
Weight 2 lbs
Zones

4

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Specifications ZSR

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Specifications ZSR
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