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OVERVIEW:
The “ZVC40X-5” refers to a model number where “X” represents the number of control zones. Model number “ZVC406-5” is used for reference
in this document. The ZVC506-5 is a six zone switching relay that can have up to 6 thermostats connected and will operate up to 6 zone
circulators, plus 2 auxiliary outputs (AUX) to control circulators in boiler and primary loops, for example.
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
when using an indirect water heater.
The ZVC406-5 includes timing options for
Post Purge, Pump Exercise and Priority
Protection. The ZVC406-R-5 also includes
an energy saving program that can
adjust the temperature of a modulating-
condensing boiler or conventional On/Off
boiler to increase the comfort level and
use less fuel, without the need to install an
outdoor sensor. It also supports Outdoor
Reset (Weather Compensation) when
separately purchased outdoor sensor is
connected (or separately purchased Plug-
In Reset Control for standard ZVC406
model).
For information on the Taco Zone Valve
Controls (ZVCs) including catalog,
instruction sheets, submittal data sheets,
and our highly praised Zone Controls
Wiring Guide, scan the QR code below
or visit www.TacoComfort.com.
Instruction Sheet
ZVC403/404/405/406-5 Zone Valve Control
102-575
SUPERSEDES: NEW EFFECTIVE:10/11/24
Plant ID No. 9300-4101
TABLE OF CONTENTS
1. Warnings & Safety Information
2. Location & Installation
3. Operation & DIP Switch Settings
4. Wiring Procedure
5. Product & Application Diagrams
6. Reset Control Setup & Wiring
7. Troubleshooting & FAQs
8. Fuse Replacement
9. Specications
10. Accessories & Replacement Parts
11. Warranty
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