Features
Overview for Caleffi ZSR104
The Caleffi ZSR104 is a multi-zone switching relay operated by low voltage thermostats or controllers. Controlling up to four zone pumps and a primary pump, the ZSR104 is a convenient solution for pump control in multi-zone hydronic heating systems. The ZSR104's installer friendly design saves time and money while its durable build ensures proper operation for years to come.
- Installer Friendly
- The Caleffi ZSR104 features ample room for terminations, large screw terminals, an automatic resettable fuse and snap-in transformers to make installation a breeze.
- Versatile
- With three selectable 120 VAC auxiliary switches, dedicated pump outputs and unlimited zone expansion, the ZSR104 is an incredibly versatile unit in a small package.
- Universal Compatibility
- The ZSR104 features configurable pump logic along with the ability to connect to 2, 3 and 4 wire zone valves and thermostats.
- Additional Features
- Primary pump output
- Three dry contacts for enabling boilers and pumps
- Selectable priority, pump exercise, post purge zone, remote enable and primary pump status with DIP switches
- Twelve 1/2" electrical knockouts
- LED function lights
Specifications
Overview
Product Category
Thermostats and Controls
UPC
8016615438123
General Information
Product Line
Z-One
Product Category
Thermostats and Controls
Number of Zones 
4
Electrical Data
Voltage
120 Volts
Phase
1
Frequency
60 Hz
Maximum Load
12 Amps
Dimensions
Product Height
9 1/4 Inches
Product Width
11 Inches
Product Depth
3 Inches
Product Weight
2 Pounds
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