Skip to main content
Home page Home page
Main navigation
  • Products
  • Products
    Products:
    • Air and Dirt Separators and Air Vents
      Air and Dirt Separators and Air Vents:
      • Air Vents
        Air Vents:
        • Accessories
        • DISCALAIR® Automatic (up to 4.5 SCFM)
        • HYGROCAL™ Radiator Air Vent
        • MAXCAL™ Automatic (up to 9.0 SCFM)
        • MINICAL® Automatic (up to 1.7 SCFM)
        • Manual
        • PLUMBVENT™ Automatic (plumbing)
        • ROBOCAL™ Automatic (up to 0.8 SCFM)
        • VALCAL™ Automatic (up to 2.5 SCFM)
      • DIRTMAG® Magnetic Dirt Separators
        DIRTMAG® Magnetic Dirt Separators:
        • Accessories
        • DIRTMAG® (ANSI Flange)
        • DIRTMAG® (Composite)
        • DIRTMAG® Pro (Brass)
      • DISCALDIRTMAG® Air and Magnetic Dirt Separators
        DISCALDIRTMAG® Air and Magnetic Dirt Separators:
        • Accessories
        • DISCALDIRTMAG® (ANSI Flange)
        • DISCALDIRTMAG® (Brass)
      • DISCALDIRT® Air and Dirt Separators
        DISCALDIRT® Air and Dirt Separators:
        • Accessories
        • DISCALDIRT® (ANSI Flange)
        • DISCALDIRT® (Brass)
      • DISCAL® Air Separators
        DISCAL® Air Separators:
        • Accessories
        • DISCAL® (ANSI Flange)
        • DISCAL® (Brass)
      • Gold Standard Kit
        Gold Standard Kit:
        • Accessories
        • Gold Standard Kit™
    • Backflow Prevention and Safety Devices
      Backflow Prevention and Safety Devices:
      • Backflow Preventers
        Backflow Preventers:
        • Dual Check with atmospheric vent (DuC-AV)
        • Reduced Pressure Principle (RP)
      • Safety Devices
        Safety Devices:
        • Vacuum Relief Valves (VRV)
    • Balancing Valves
      Balancing Valves:
      • Dynamic
        Dynamic:
        • Accessories
        • FlowCal+™ (compact)
        • FlowCal+™ (y-body)
        • FlowCal™ (compact)
        • FlowCal™ (hydronics)
        • FlowCal™ (y-body)
      • Static (manual)
        Static (manual):
        • Accessories
        • Flo-Set™
        • QuickSetter+™
        • QuickSetter™ (hydronics)
      • Thermal
        Thermal:
        • Accessories
        • ThermoSetter™
    • Distribution Manifolds and Mixing Stations
      Distribution Manifolds and Mixing Stations:
      • Assemblies
        Assemblies:
        • Accessories
        • TwistFlow™
      • Temperature Mixing Units
        Temperature Mixing Units:
        • Accessories
        • HydroMixer™
      • Thermostatic Manifold Mixing Stations
        Thermostatic Manifold Mixing Stations:
        • Accessories
        • Low Temperature
    • Filling Units and Boiler Trim Kits
      Filling Units and Boiler Trim Kits:
      • Automatic Filling Units
        Automatic Filling Units:
        • Accessories
        • AutoFill™ Combo
        • AutoFill™
        • Boiler Trim Kits
      • Water Treatment
        Water Treatment:
        • Accessories
        • Filling Units
        • HYDROFLUSH™ (fill and flush cart)
    • Fittings
      Fittings:
      • AutoFill™
        AutoFill™:
        • Tail pieces, union nuts, washers
      • Backflow Preventers
        Backflow Preventers:
        • Tail pieces, union nuts, washers
      • PresCal™
        PresCal™:
        • Tail pieces, union nuts, washers
      • Separators
        Separators:
        • Tail pieces, union nuts, washers
      • Small Valves
        Small Valves:
        • 1" union Fittings
        • Tail pieces, union nuts, washers
      • Threaded
        Threaded:
        • Union nuts, nipples adapters, bushings
    • Hydraulic Separators
      Hydraulic Separators:
      • 4-in-1 SEP4™
        4-in-1 SEP4™:
        • Accessories
        • SEP4™ (ANSI Flange)
        • SEP4™ (Union)
      • Combined Hydraulic Separator and Manifold
        Combined Hydraulic Separator and Manifold:
        • Accessories
        • HydroLink™
      • Hydro Separators
        Hydro Separators:
        • Accessories
        • Hydro Separator (ANSI Flange)
        • Hydro Separators (Union)
        • HydroCal™ (ANSI Flange)
    • Mixing Valves
      Mixing Valves:
      • Electronic
        Electronic:
        • Accessories
        • LEGIOMIX®
      • Thermostatic (point of distribution)
        Thermostatic (point of distribution):
        • Accessories
        • AngleMix™
        • MixCal+™ (high flow)
        • MixCal™
        • TankMixer™ (DHW kit)
      • Thermostatic (point of use)
        Thermostatic (point of use):
        • Accessories
        • SinkMixer™ (4-way)
        • TubMixer™ (high flow)
    • Pressure Reducing Valves
      Pressure Reducing Valves:
      • Diaphragm Type
        Diaphragm Type:
        • Accessories
        • PresCal™
        • Prescal™ Compact
      • Piston Type
        Piston Type:
        • PresCal™ HP
    • Renewable Components and Energy Meters
      Renewable Components and Energy Meters:
      • Biomass
        Biomass:
        • Accessories
        • ThermoBloc™ (recirc and distribution units)
        • ThermoProtec™ (mixing valves)
      • Energy Meters
        Energy Meters:
        • Accessories
        • CONTECA™
      • Solar
        Solar:
        • Accessories
        • Air Vents
        • DISCAL® (air separators)
        • Mixing Valves
        • Pump Stations
        • Safety Relief Valves
    • Specialty Components and Kits
      Specialty Components and Kits:
      • Air Vents (plumbing)
        Air Vents (plumbing):
        • PLUMBVENT™
      • Check Valves
        Check Valves:
        • Accessories
        • Check Valves (serviceable)
      • Differential Pressure Bypass
        Differential Pressure Bypass:
        • Differential Pressure Bypass Valves
      • Isolation Ball Valves
        Isolation Ball Valves:
        • Accessories
        • Isolation Valves
      • Kits
        Kits:
        • Boiler Trim Kits
        • Gold Standard Kits
        • Tankless Water Heater Kits
      • Universal Flow Switch
        Universal Flow Switch:
        • Uni-Switch™
      • Y-strainers
        Y-strainers:
        • Accessories
        • Y-strainers (hydronics)
    • Thermostatic Radiator Valves
      Thermostatic Radiator Valves:
      • Connection Valves
        Connection Valves:
        • Accessories
        • Angled Version
        • Straight Version
      • Control Heads
        Control Heads:
        • Accessories
        • Control Heads (Built-in Sensor)
        • Control Heads (Remote Sensor)
      • Radiator Valve Bodies
        Radiator Valve Bodies:
        • Accessories
        • Valve Bodies (angled)
        • Valve Bodies (straight)
    • Zone Valves, Controls and Coil Kits
      Zone Valves, Controls and Coil Kits:
      • Motorized Ball Zone Valves
        Motorized Ball Zone Valves:
        • 2-way (straight)
        • 3-way (by-pass)
        • 3-way (diverting)
      • Motorized Zone Valves
        Motorized Zone Valves:
        • 2-way Bodies (straight flow)
        • 3-way Bodies (diverting flow)
        • Accessories
        • Actuators (normally closed)
        • Actuators (normally opened)
        • Z-one™ 2-way
      • Pressure Independent Control Valves (PICV)
        Pressure Independent Control Valves (PICV):
        • Accessories
        • FLOWMATIC®
      • Thermo-electric Zone Valves
        Thermo-electric Zone Valves:
        • Accessories
        • TwisTop™
      • Z-one™ Zone Controls
        Z-one™ Zone Controls:
        • Pump Zone Controls
        • Valve Zone Controls
  • Education
    Education:
    • idronics™
    • Coffee with Caleffi™
    • Ask Caleffi Podcast
  • Company
    Company:
    • Corporate
    • The Group
    • History
    • Mission
    • Certifications
    • Case Studies
    • The Caleffi Green
  • Blog
Secondary navigation
  • News&Events
  • Contacts
    • EMEA
      • Albania - Albanian
      • Belgium - French
      • Belgium - Dutch
      • Croatia - Croatian
      • Czech Republic - Czech
      • France - French
      • Germany - German
      • Greece - Greek
      • Hungary - Hungarian
      • Italy - Italian
      • Macedonia - Macedonian
      • Netherlands - Dutch
      • Poland - Polish
      • Portugal - Portuguese
      • Romania - Romanian
      • Russia - Russian
      • Serbia - Serbian
      • Slovakia - Slovak
      • Slovenia - Slovenian
      • Spain - Spanish
      • Turkey - Turkish
    • The Americas
      • Brazil - Portuguese
      • North America - English
    • Asia Pacific
      • China - Chinese
    Visit our International site
Home
Home /
... /
Zone Relay Controls
Blog

Zone Relay Controls

Blog post categories list
Blog post categories list
Hydronic Principles Ask Caleffi Podcast Mixing Valves, Thermostatic Air and Dirt Separation Domestic Hot Water Systems Zone Valves and Radiator Valves Air Vents Water Quality Balancing Valves Mixing Valves, Electronic Zone Relay Controls Coffee with Caleffi Q&A Solar Components Hydraulic Separation Manifolds and Mixing Stations Pressure Reducing Valves Articles Filling and Backflow Prevention Magnetic Separation 5 Things You Need To Know Geothermal and Biomass Certifications Engineering Tools and Documentation Heat Meters
The Great Hydronics Debate
December 05, 2022

The Great Hydronics Debate - PHC News Article

by Cody Mack, National Training Manager, Caleffi North America      As featur...
Read more
Have you discovered our HYDRONIC TOPICS on the Ask Caleffi Blog?
June 29, 2022

Have you discovered our HYDRONIC TOPICS on the Ask Caleffi Blog?

Greg and Dan share commonly asked questions from the Ask Caleffi Blog.  During this episode, th...
Read more
What's wrong with my actuator?
November 10, 2021

What's wrong with my actuator?

It seems that hydronic zone valves have been around forever. They are pretty bulletproof!  But ...
Read more
The heat is on... but for who?
September 03, 2021

The heat is on... but for who?

Ask Caleffi Podcast (Episode 9)
Read more
Today's Zone Controls -  No longer your Dad's old relay boards.
October 28, 2020

Today's Zone Controls - No longer your Dad's old relay boards.

by Dan Firkus, Applications Engineer, Caleffi North America      As featured ...
Read more
Can I add a zone to an existing ZSR or ZVR relay board?
December 10, 2019

Can I add a zone to an existing ZSR or ZVR relay board?

The ZVR or ZSR Series relay boards are available for 3, 4 or 6 zone options.  If your syst...
Read more
Can I get 24 VAC auxiliary power from a Z-one Relay Control?
June 09, 2016

Can I get 24 VAC auxiliary power from a Z-one Relay Control?

There is currently not a dedicated pair of 24 VAC terminal blocks on the Caleffi Z-one Relay Control...
Read more
Can a Caleffi Z-one Relay control both domestic hot water heating and space heating using one boiler?
March 03, 2016

Can a Caleffi Z-one Relay control both domestic hot water heating and space heating using one boiler?

Yes, the relay controls have the ability to prioritize DHW demand and they also have the ability to ...
Read more
Ask Caleffi:  Relay Controls
January 15, 2015

Caleffi Z-one Relay Controls have "resettable" fuses

One of the really nice features of the Caleffi ZSR and ZVR Zone Relay Controls is the resettable fus...
Read more
October 09, 2014

Tech Tip: Z-one™ Relay Wiring Guide

Earlier this year, we released our new line of Z-one relay controls. We are very excited about the l...
Read more
August 28, 2014

Tech Tip: Stranded Wires

Stranded wires can be an obstacle and a hazard on the job site when making connections to small term...
Read more
Main navigation
  • Products
  • Education
  • Company
  • Blog
Secondary navigation
  • News&Events
  • Contacts
Footer menu
  • Cookies
Caleffi S.p.a.
P.I. IT04104030962 - © 1961 - 2023 Caleffi S.p.a. | All rights reserved