Taco PC702

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 PC702 Specifications

General

Brand	Taco
Model	PC702
Category	Control Unit
Language	English

Summary

TACO Zone Control Product Information

Switching Relays

Overview of Taco Switching Relays, including model numbers and basic descriptions.

Zone Valve Controls

Overview of Taco Zone Valve Controls, including model numbers and basic descriptions.

Add-On Power Controls

Overview of Taco Add-On Power Controls like Boiler Reset and Mixing Controls.

Fan Controls

Overview of Taco Hydro Air Fan Controls, including model numbers and basic descriptions.

SAFETY NOTICE

Dual Power Source Hazards

Guidance on checking and correcting wiring to prevent dual power sources.

Switching Relay Instruction Sheets

SR501 Switching Relay

Features, operation, and wiring diagrams for the SR501 Switching Relay.

SR504 & SR506 Switching Relays

Features, operation, and wiring diagrams for SR504 and SR506 Switching Relays.

SR501-EXP Switching Relay

Features, operation, and wiring diagrams for the SR501-EXP Switching Relay.

Zone Valve Control Instruction Sheets

ZVC403 & ZVC405 Zone Valve Controls

Features, operation, and wiring diagrams for ZVC403 and ZVC405 Zone Valve Controls.

ZVC404 & ZVC406 Zone Valve Controls

Features, operation, and wiring diagrams for ZVC404 and ZVC406 Zone Valve Controls.

ZVC404-EXP & ZVC406-EXP Zone Valve Controls

Features, operation, and wiring diagrams for EXP series Zone Valve Controls.

Hydro Air Fan Control Instruction Sheets

HAFC101 and 201 Hydro Air Fan Controls

Features, operation, and wiring diagrams for HAFC101 and HAFC201 Fan Controls.

Plug-In PowerPort Cards Instructions

PC600 Post Purge Timer Card

Installation and operation details for the PC600 Post Purge Timer Plug-In Card.

PC605 Priority Protection Card

Installation and operation details for the PC605 Priority Protection Plug-In Card.

PC610 Pump Exercise and Timer Card

Installation and operation details for the PC610 Pump Exercise and Timer Plug-In Card.

Standard Terms and Definitions

TACO Zone Controls Cross-Reference