Taco ZVC406

TACO ZONE CONTROLS WIRING GUIDE
Pages
Switching Relays – Single Zone Wiring 2 – 2
Switching Relays – Oil Boiler Wiring Safety Notice 2 3– 4
Switching Relays – N
ON EXP Connected Together with Priority 5 – 11
Switching Relays – EXP Connected Together with Priority 12 – 14
Switching Relays – Multiple Indirect Hot Water Heaters 15 – 16
Switching Relays – EXP Connected To Reset Controls (PC700, 702 & 705) 17 – 28
Zone Valve Controls – N
ON EXP Connected Together with Priority 29 – 34
Zone Valve Controls – EXP Connected Together with Priority 35 – 38
Zone Valve Controls – Connected To Reset Controls (PC700, 702 & 705) 39 – 46
Hydro Air Fan Controls (HAFC 101 & 201) 47 – 51
Specialty Thermostat and Zone Valve Wiring 52 – 56
Radiant Mixing Block 57 – 58
X-Pump Block 59 – 61
iSeries Mixing Valves 62 – 63
Low Water Cutoffs and Electric Water Feeders 64 – 79
Aquastat Wiring 80 – 86
Instruction Sheets 87 – 97
Standard Terms and Definitions – 98
Cross Reference 99 – 100
Do it once.
Do it right.
© Taco Catalog No. 100-9.0 Effective Date: July 1, 2010
Supersedes Date: July 1, 2007

Taco ZVC406 Specifications

General

Model	ZVC406
Type	Zone Valve Control
Zones	4
Voltage	24V
Input Voltage	120 VAC
Transformer	40 VA
Enclosure	Plastic
Terminals	Screw
Compatibility	Taco Zone Valves
Thermostat Compatibility	3-wire zone valves
Max Load per Zone	1.0A

Summary

TACO ZONE CONTROLS WIRING GUIDE

Taco Zone Control Product Information

Overview of Taco's zone control product line: relays, valves, and controls.

Switching Relays Wiring and Operation

Detailed SR501 switching relay wiring diagrams and operational instructions.

Important Safety Notices

Critical safety warnings for oil boiler wiring, power sources, and connections.

Advanced Switching Relay Configurations

Wiring diagrams for interconnected switching relays and priority zoning setups.

Boiler Reset Control Integration

Wiring diagrams for integrating PC700 boiler reset control with switching relays.

Zone Valve Controls Wiring

Wiring diagrams for ZVC series zone valve controls and their applications.

Hydro Air Fan Control Wiring

Wiring diagrams for HAFC101 and HAFC201 hydro air fan controls.

Specialty Wiring Applications

Wiring for mixing valves, pump blocks, and other specialized applications.

Low Water Cutoff and Water Feeder Wiring

Wiring instructions for Taco LWCOs and electric water feeders.

Aquastat Wiring Diagrams

Wiring diagrams for various Honeywell aquastat models.

Product Instruction Sheets

Detailed instruction sheets for Taco switching relays and zone valve controls.

Standard Terms and Definitions

Glossary of terms used in Taco zone control documentation.

Zone Controls Cross-Reference

Cross-reference guide for Taco zone controls and compatible products.