Taco SR506-EXP

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 SR506-EXP Specifications

General

Category	Control Unit
Input Voltage	24 VAC
Output Voltage	24 VAC
Maximum Zones	6
Transformer	40 VA
Priority Zone	Yes

Summary

Switching Relays

SR501 Switching Relay Wiring

Wiring diagrams for SR501 switching relay, including typical and alternative methods.

Safety Notice

Important safety information regarding power sources for oil boiler aquastat controls.

2 Indirect Water Heaters with Priority Connected to Standard Switching Relays

Wiring diagram for 2 indirect water heaters using priority with standard switching relays.

Instruction Sheet SR501 Switching Relay

Guide for installing and operating the SR501 switching relay.

Instruction Sheet SR501-EXP Switching Relay

Guide for installing and operating the SR501-EXP switching relay.

Zone Valve Controls

2 EXP Zone Valve Controls Connected Together with System and DHW Pumps

Boiler Controls & Accessories

PC700 Boiler Reset Control Connected to SR501-EXP Switching Relay

Wiring diagram for PC700 control connected to SR501-EXP switching relay.

Air Handler Controls

Mixing Valves & Blocks

Radiant Mixing Block, Single Zone

X - Pump Block, Single Zone

iSeries Mixing Valve