Taco Comfort Solutions ZVC406-5 Instruction Sheet
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Taco Comfort Solutions ZVC406-5 Instruction Sheet

Zone valve control
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ZVC406-5 Zone Valve Control
SUPERSEDES: New
For information on Taco's Zone Valve Controls (ZVC's) including catalog sheet, instruction sheets, Visio stencils
and our highly praised Zone Controls Wiring Guide, scan the QR code to the left or go to our website:
www.TacoComfort.com.
Overview:
The ZVC406-5 is a six zone valve control that can have up to 6 thermostats
connected and will operate up to 6 zone valves, plus 3 auxiliary outputs (AUX) to
control circulators; like boiler and primary loops.
The ZVC406-5 has a priority zone option, allowing zone 1 to operate and deactivate
zones 2 through 6 during a priority call; this is ideal for when using an indirect water
heater.
The ZVC406-5 includes timing options for Post Purge, Pump Exercise and Priority
Protection. The ZVC406-5 includes an energy saving program that can adjust the
temperature of a modulating-condensing boiler or conventual On/Off boiler to
increase the comfort level and use less fuel, without the need to install an outdoor
sensor.

Table of Contents

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Plant ID #9300-4104
EFFECTIVE: February 17, 2021
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12. Warranty
102-575

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Summary of Contents for Taco Comfort Solutions ZVC406-5

  • Page 1: Table Of Contents

    Zone Controls Wiring Guide, scan the QR code to the left or go to our website: www.TacoComfort.com. Overview: The ZVC406-5 is a six zone valve control that can have up to 6 thermostats connected and will operate up to 6 zone valves, plus 3 auxiliary outputs (AUX) to control circulators; like boiler and primary loops.

  • Page 2: Warnings & Safety Information

    1. Warnings & Safety Information: FCC Regulatory Statements This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference. (2) This device must accept any interference received, including interference that may cause undesired operation. This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the Federal Communication Commission (FCC) rules.

  • Page 3: Location & Installation

    2. Location & Installation: Planning: Included in Package: ZVC406-5 zone valve control; 6 zone Instruction sheet 2 Spare fuses attached to inner cover Strap-on temperature sensor Tools & Material Needed: Small straight blade screwdriver Screws or hardware for mounting Phillips screwdriver...

  • Page 4: Operation & Dip Switch Settings

    Operation & Dip Switch Settings: General Operation: When any thermostat calls for heat, the appropriate zone valve is energized, and the yellow light goes on. When the zone valve is fully open, the red light goes on and energizes the boiler end switch relay and AUX circulator relay(s). Expansion Connections: Set dip switch (#1) to MASTER on the switching relay that is designated as the priority zone control.

  • Page 5: Wiring Procedure

    4. Wiring Procedure: End Switches (Low Voltage Dry Contacts): Main The main end switch closes when any zone thermostat calls for heat MAIN PR IORIT Y BO ILER BO ILER and connects to T-T on boiler operating control. SWITC H SWITC H Priority The priority end switch closes only when the priority zone thermostat or aquastat is calling for heat and connects to DHW T-T on boiler (optional).

  • Page 6: Product & Applications Diagrams

    Product & Applications Diagrams: PA01-V – ZVC406-5 with 5 Zone Valves & Indirect DHW; Supply & Return Headers Mechanical Diagram Electrical Diagram Dip Switch Settings 1. OFF - Master 2. ON - Priority 3. OFF - Primary Pump 4. OFF or ON - Post Purge 5.
  • Page 7 PA02-V - SR506-5 with 5 Zone Circulators & Indirect DHW; Primary/Secondary Mechanical Diagram Electrical Diagram Dip Switch Settings 1. OFF - Master 2. ON - Priority 3. OFF - Primary Pump 4. OFF or ON - Post Purge 5. OFF or ON - Pump Exercise 6.
  • Page 8 PA03-V –High & Low Temp Temperature Zones Indirect DHW; Primary/Secondary Mechanical Diagram Electrical Diagram Dip Switch Settings; Master Dip Switch Settings; Expansion 1. OFF - Master 1. ON - Expansion 2. OFF - Priority 2. ON - Priority 3. OFF - Primary Pump 3.
  • Page 9 PA04-V – Oil Fired Boiler with Tankless Coil; Supply & Return Headers Mechanical Diagram Electrical Diagram Dip Switch Settings 1. OFF - Master 2. OFF - Priority 3. OFF - Primary Pump 4. OFF or ON - Post Purge 5. OFF or ON - Pump Exercise 6.

  • Page 10: Reset Control Setup & Wiring

    Reset Control Setup & Wiring (Optional) Boiler Reset Types: The ZVC406-5 includes two types of boiler reset control logic: Indoor Reset Control (Load Reset) uses the thermostat cycling information to determine the supply water temperature. Thermostat short cycling usually indicates supply water temperature is too high and long on cycles usually is too low of water temperature.

  • Page 11: The Taco Elink Mobile App

    The Taco eLink APP (Optional) Note: The Taco eLink mobile app is not required for standard installations. Advanced Control & Monitoring Options: The Taco APP is required for advanced control functions and parameters to operate. Use the QR code to download APP for either iOS or Android mobile devices. Follow the app menu to configure advanced features that the Taco new zone controls have to offer, including;...
  • Page 12 The eLink APP...
  • Page 13 The eLink APP...

  • Page 14: Troubleshooting & Faq's

    8. Trouble Shooting & FAQ’s For your convenience, the Taco Tech Support team is available anytime 24/7. Just call 401- 942-8000 for help. Problem: Digital thermostats do not work correctly when connected to a switching relay. Solution: Some thermostats are a “Power Stealing” type which means they are powered by the switching relay with just 2 wires (R &...

  • Page 15: Specifications

    10. Specifications: Power and Electrical Ratings: Environmental Ratings: Power Supply: 120VAC ±10%, 60Hz, 20A Ambient Temperature Rating: Zone Valve Output Rating: 32°F to 104°F (0°C to 40°C) Operating Humidity Range (% RH): 24 Vac, 1A, AUX(s) Pump Output Rating: 5 to 90% RH, noncondensing Sensor Temperature Rating: 120 Vac, 1/6 HP Boiler End Switch Contact Rating:...
  • Page 16 (at the company’s option) any product or part Taco reserves the right to provide which is proven defective under normal use replacement products and parts which are within three (3) years from the date of start- substantially simi- lar in design and up or three (3) years and six (6) months from functionally equivalent to the defective date of shipment (whichever occurs first)

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