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Caleffi Z-one ZSR104 4 Zone Pump Relay, 24 VAC

Part #135122

MFG #ZSR104

135122_Caleffi_ZSR103.jpg

Caleffi Z-one ZSR104 4 Zone Pump Relay, 24 VAC

Part #135122

MFG #ZSR104

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Caleffi Z-one ZSR104 4 Zone Pump Relay, 24 VAC

Part #135122

MFG #ZSR104

Item Features
  • Installer friendly - Ample room for terminations, large screw terminals, automatic resettable fuse, snap-in transformers.
  • Application versatility - 3 selectable 120 VAC auxiliary switches for enabling pumps and boilers, dedicated pump outputs, unlimited zone expansion.
  • Extremely reliable design - Clutch-protected drive train, durable synchronous motor, millions installed in North America.
  • Compact design with snap-on actuator with a convenient in-line push button, removable bottom cap allows for easy in-pipe service.
  • Application versatility - Hot water, chilled water and low-pressure steam.
  • Compatible with 2, 3 and 4-wire thermostats or other low voltage controllers with switching action.
  • Heavy duty, sealed relays.
  • 1 primary pump output and 3 to 6 (model dependent) zone pump outputs (120 VAC/5 A each).
  • Zone priority selectable with 1 hr time-out feature.
  • Convenient R, W, C and T, T, COM dual labeling at thermostat terminals.
  • System pump status (on/off) during priority selectable.
  • Dry contacts (XX,AUX, ZONE 1 E/S) capable of 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.