TACO ZONE CONTROLS WIRING GUIDE

(1)

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 – NON 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 – NON 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.

(2)

(3)

TACO Zone Control Product Information

Switching Relays

Product No.

Description

SR501

1 Zone Switching Relay

SR501-845RP

1 Zone Switching Relay Replacement PC Board for

Honeywell R845, RA89A, RA832 or Comparable Relay

SR502

2 Zone Switching Relay with Priority

SR503

3 Zone Switching Relay with Priority

SR504

4 Zone Switching Relay with Priority

SR506

6 Zone Switching Relay with Priority

Switching Relays with PowerPort Options and Expandable to 20 Zones

Product No.

Description

SR501-EXP

1 Zone Switching Relay

SR503-EXP

3 Zone Switching Relay with Priority and 3 PowerPorts

SR504-EXP

4 Zone Switching Relay with Priority and 3 PowerPorts

SR506-EXP

6 Zone Switching Relay with Priority and 3 PowerPorts

Zone Valve Controls

Product No.

Description

ZVC403

3 Zone Valve Control

ZVC404

4 Zone Valve Control with Priority

ZVC405

5 Zone Valve Control

ZVC406

6 Zone Valve Control with Priority

Zone Valve Controls with PowerPort Options and Expandable to 20 Zones

Product No.

Description

ZVC404-EXP

4 Zone Valve Control with Priority and 2 PowerPorts

ZVC406-EXP

6 Zone Valve Control with Priority and 2 PowerPorts

Plug-In PowerPort Cards

(For use with all -EXP controls)

Product No.

Description

PC600

Post Purge Timer Plug-In Card

PC605

Priority Protection Plug-In Card

PC610

Universal Timer/Pump Exercise Plug-In Card

Add-On Power Controls

(For use with all -EXP controls)

Product No.

Description

PC700

Boiler Reset Control

PC702

2-Stage Boiler Reset Control

PC705

Variable Speed Pump Injection Mixing Control

Fan Controls

Product No.

Description

HAFC101

Hydro Air Fan Control

HAFC201

Hydro Air Fan Control with Optional Time Delays

Do it once.

Do it right.

(4)

AT TO: 120 V AC POWER CIRCULA TOR 120 V A C INPUT THERMOST

R

W

T

COM 24 _VAC N/O N/C N/C N/O

NH

3

44

6

5

TO: ZC SR501 _{1 ZONE} SWITCHING RELAY POWER T STAT TO: ZR ALTERNATIVE WIRING (TANKLESS COIL)

T

S

R

50 1 Switc

hing R

elay W

ir

ing

AT TO: 120 VAC POWER CIRCULA TOR JUMPER 120 V A C INPUT THERMOST

R

W

T

NH

3

44

6

5

TO: TT ON BOILER SR501 _{1 ZONE} SWITCHING RELAY POWER T STAT

TYPICAL WIRING (COLD START)

T

TO: 120 V AC POWER CIRCULA TOR

R

W

T

NH

3

44

6

5

TO: TT ON BOILER SR501 _{1 ZONE} SWITCHING RELAY POWER * T STAT * ALTERNATIVE WIRING

(24 VAC POWERED INPUT SIGNAL) H N REMOVE JUMPER. DO NOT CONNECT POWER TO N AND H TERMINALS.

*

T

STAT LIGHT WILL GO _{ON AND OFF WITH 24 VAC} _{SIGNAL. POWER LIGHT} _{WILL ALWAYS BE OFF.} 24 VAC SIGNAL

Note:

When using Alternative W

iring diagram, the boiler

oper-ating control’

s ZC terminal will see the load of the cir

culator(s).

W

a

rning:

When using Alternative W

iring diagram, wiring

instructions must be followed so power originates from the boiler aquastat. Failure to follow these wiring instructions may result in a secondar

y sour

ce of power being connected to the boiler that

may activate it under certain cir

cumstances, causing injur

(5)

(6)

(cont.)

NOTE: Tankless coil has priority.

THREE ZONE SWITCHING RELAY WITH OPTIONAL PRIORITY

THERMOSTAT

FUSE 1 AMP 24 VAC

POWER

ZONE 1 ZONE 2ZONE 3

120 VOLT CIRCULATORS ZC X1

ZONE1 ZONE2 ZONE3

SR 503 ZONE 2 POWER ZONE 1 ZONE 3 L1 L2 T T LINE VOLTAGE OIL BURNER RELAY

CIRCULATOR ON BOILER (IF ATTACHED) B2 C1 B1 ZR HONEYWELL L8124 OR EQUAL 120 VAC INPUT C2 ZC THERMOSTAT L1 L2 (NEUTRAL) (HOT) CIRCUIT BREAKER CUSTOMER EMERGENCY SWITCH THERMAL FUSE (FIROMATIC) SERVICE SWITCH LOW WATER CUTOFF NP H X2ZR

NOTE: The boiler operating control’s ZC terminal will see the load of the circulator(s).

FOUR ZONE SWITCHING RELAY WITH OPTIONAL PRIORITY

THERMOSTATS ZONE 4 ON OFF PRIORITY 120V RELAY FUSE 1 AMP 24 VAC POWER

ZONE 1 ZONE 2 ZONE 3 ZONE 4

120 VOLT CIRCULATORS ZC ZR

X X END SWITCH

ZONE1 ZONE2 ZONE3 ZONE4 POWER INPUT SR 504 ZONE 2 POWER ZONE 1 ZONE 3 ZONE 4 L1 L2 T T LINE VOLTAGE OIL BURNER RELAY

CIRCULATOR ON BOILER (IF ATTACHED) B2 C1 B1 ZR HONEYWELL L8124 OR EQUAL 120 VAC INPUT C2 ZC THERMOSTAT L1 L2 (NEUTRAL) (HOT) CIRCUIT BREAKER CUSTOMER EMERGENCY SWITCH THERMAL FUSE (FIROMATIC) SERVICE SWITCH LOW WATER CUTOFF

(7)

SR502/503 Switching Relay Controlling Another SR502/503 Switching Relay

SR 503

24 VAC POWER

FUSE 1 AMP

ZONE1 ZONE2 ZONE3

120 VOLT CIRCULATORS ZONE1 ZONE2 ZONE3

TO: "TT" ON AQUASTAT CONTROL

JUMPER N P ZC H X ZR1 X2 ZONE 2 POWER ZONE 1 ZONE 3 THREE ZONE SWITCHING RELAY

WITH OPTIONAL PRIORITY

T

T T

SR 503

ZONE1 ZONE2 ZONE3

24 VAC POWER

FUSE 1 AMP

120 VAC POWER

JUMPER

N P ZC H X ZR1

X2

T A T

BOILER

H

N

SLAVE

MASTER

AQUASTAT ON DHW HEATER ZONE 2 POWER ZONE 1 ZONE 3 DHW HEATER CIRCULATOR PRIORITY ON VIA JUMPER PLACEMENT PRIORITY OFF VIA JUMPER PLACEMENT

(8)

SR502/503 Switching Relay Controlling Another SR504/506 Switching Relay

SIX ZONE SWITCHING RELAY WITH OPTIONAL PRIORITY

ZONE 6 ON OFF PRIORITY 120V RELAY 120 VOLT CIRCULATORS ZC ZR X X END SWITCH POWER INPUT 120 VAC INPUT TO: "TT" ON BOILER

ZONE1 ZONE2 ZONE3 ZONE4 ZONE5 ZONE6

FUSE 1 AMP 24 VAC POWER

SR 506

ZONE 2 POWER ZONE 1 ZONE 3 ZONE 4 ZONE 5 ZONE 6 THERMOSTATS BOILER H N

SR 503

ZONE1 ZONE2 ZONE3

24 VAC POWER

FUSE 1 AMP

JUMPERS

N P ZC H X ZR1

X2

T A T

MASTER

ZONE 2 POWER ZONE 1 ZONE 3

SLAVE

T PRIORITY ON VIA JUMPER PLACEMENT REMOVE JUMPER PRIORITY OFF AQUASTAT ON DHW HEATER

(9)

Two SR504/506 Switching Relays Connected Together

BOILER

H

N

A AQUASTAT ON DHW HEATER T T T

ZONE 4 ON OFF PRIORITY 120V RELAY FUSE 1 AMP 24 VAC POWER

120 VAC INPUT 120 VOLT CIRCULATORS ZC ZR X X END SWITCH

ZONE1 ZONE2 ZONE3 ZONE4 POWER INPUT

SR 504

ZONE 2 POWER ZONE 1 ZONE 3 ZONE 4 JUMPER T T T

ZONE 4 ON OFF PRIORITY 120V RELAY FUSE 1 AMP 24 VAC POWER

120 VAC INPUT TO: "TT" ON BOILER 120 VOLT CIRCULATORS ZC ZR X X END SWITCH

ZONE1 ZONE2 ZONE3 ZONE4 POWER INPUT

SR 504

ZONE 2 POWER ZONE 1 ZONE 3 ZONE 4 JUMPER DHW HEATER CIRCULATOR OUTPUT NOT USED PRIORITY ON PRIORITY ON

(10)

Priority Zoning Circulator Controlling SR504/506 Switching Relay

SR 506

ZONE 2 POWER ZONE 1 ZONE 3 ZONE 4 ZONE 5 ZONE 6 ON OFF PRIORITY POWER IN 120 VAC INPUT THERMOSTAT BOILER PRIORITY

PRIORITY ZONING CIRCULATOR

PR-IN PR-OUT LIVE NEUT

1 2 3 4 THERMOSTATS

BOILER

H N A AQUASTAT ON DHW HEATER

MASTER

SLAVE

PRIORITY ON REMOVE JUMPER PRIORITY OFF T

(11)

P

rior

it

y Zoning Cir

culator Contr

olling 2 S

R

504/5

06 Switc

hing R

elays

ZONE 4 ON OFF PRIORITY 120V RELA Y FUSE 1 AMP ZONE 1 Z ONE 2 ZONE 3 Z ONE 4 120 VOL T CIRCULA TORS ZC ZR X X END SWITCH ZONE1 ZONE2 ZONE3 ZONE4 POWER INPUT

SR 504

ZONE 2

POWER ZONE 1 ZONE 3 ZONE 4

T T T BOILER ZONE 4 ON OFF PRIORITY 120V RELA Y FUSE 1 AMP 24 VAC POWER ZONE 1 ZONE 2 ZONE 3 ZONE 4 120 VAC INPUT TO: "TT" ON BOILER 120 VOL T CIRCULA TORS ZC ZR X X END SWITCH ZONE1 ZONE2 ZONE3 ZONE4 POWER INPUT

SR 504

ZONE 2

T

H N

FOUR ZONE SWITCHING RELAY

SLAVE

PRIORITY OFF PRIORITY OFF T T 24 VAC POWER ON OFF PRIORITY POWER IN THERMOSTAT BOILER PRIORITY

PRIORITY ZONING CIRCULATOR

PR-IN PR-OUT LIVE NEUT 1 2 3 4 A AQUASTAT ON DHW HEATER 120 VAC INPUT

MASTER

PRIORITY ON REMOVE JUMPER REMOVE JUMPER

(12)

S

R

50 2/5

03 Switc

hing R

elay Contr

olling 2 S

R

504/5

06 Switc

hing R

elays

ZONE 4 ON OFF PRIORITY 120V RELA Y FUSE 1 AMP ZONE 1 ZONE 2 ZONE 3 ZONE 4 120 VOL T CIRCULA TORS ZC ZR X X END SWITCH ZONE1 ZONE2 ZONE3 ZONE4 POWER INPUT

SR 504

ZONE 2

T T T BOILER ZONE 4 ON OFF PRIORITY 120V RELA Y FUSE 1 AMP 24 VAC POWER ZONE 1 Z ONE 2 ZONE 3 ZONE 4 120 VAC INPUT TO: "TT" ON BOILER 120 VOL T CIRCULA TORS ZC ZR X X END SWITCH ZONE1 ZONE2 ZONE3 ZONE4 POWER INPUT

SR 504

ZONE 2

T T T H N A

SR 503

ZONE1 ZONE2 ZONE3 24 V A C POWER FUSE 1 AMP ZONE1 ZONE2 ZONE3 JUMPER N P ZC H X ZR 1 X2 ZONE 2 POWER ZONE 1

TWO ZONE SWITCHING RELAY WITH OPTIONAL PRIORITY

PRIORITY

ON

MASTER

SLAVE

PRIORITY OFF PRIORITY OFF T T T T 24 VAC POWER ZONE 3 REMOVE JUMPER REMOVE JUMPER AQUASTAT ON DHW HEATER

(13)

FOUR ZONE SWITCHING RELA

Y

ZONE 4 ON OFF PRIORITY 120V RELA Y FUSE 1 AMP ZONE 1 ZONE 2 ZONE 3 ZONE 4 120 VOL T CIRCULA TORS ZC ZR X X END SWITCH ZONE1 ZONE2 ZONE3 ZONE4 POWER INPUT

SR 504

ZONE 2

T

BOILER

FOUR ZONE SWITCHING RELA

Y

ZONE 4 ON OFF PRIORITY 120V RELA Y FUSE 1 AMP ZONE 1 ZONE 2 ZONE 3 ZONE 4 120 VAC INPUT TO: "TT" ON BOILER 120 VOL T CIRCULA TORS ZC ZR X X END SWITCH ZONE1 ZONE2 ZONE3 ZONE4 POWER INPUT

SR 504

ZONE 2

T T T H N T DHW CIRCULATOR JUMPER

R

W

T

COM 24 VA C N/O N/C N/C N/O

NH

3

44

5

6

6 SR501

POWER T STAT 120 VAC INPUT

1 ZONE SWITCHING RELAY

AQUASTAT ON DHW HEATER A T

MASTER

SLAVE

REMOVE JUMPER REMOVE JUMPER PRIORITY OFF PRIORITY OFF 24 VAC POWER 24 VAC POWER

S

R

50 1 Switc

hing R

elay Contr

olling 2 S

R

504/5

06 Switc

hing R

elays

(14)

SR501-EXP Switching Relay Controlling Another SR504/506 Switching Relay

SR 506

ZONE 2 POWER ZONE 1 ZONE 3 ZONE 4 ZONE 5 ZONE 6 THERMOSTATS BOILER H N

MASTER

SLAVE

T REMOVE JUMPER PRIORITY OFF DHW CIRCULATOR POWER T STAT TO: "TT" ON BOILER AQUASTAT ON DHW HEATER NZC ZRHH H POWER INPUT 120VAC INPUT 120VAC OUTPUT CIRC OUTPUT PRIORITY OUTPUT RESET POWER CONTROLS FUSE 1 AMP NORMAL MASTER SLAVE END SWITCH ZONE VALVE THERMOSTAT EXPANSION X X1 223 4T/RT/WCOM1 JUMPER

TO: OPTIONAL ZONE VALVE OR iSeries MIXING VALVE

MODE

FUSE 5 AMP

SR 501-EXP

(15)

S

R

50 1-E

XP Switc

hing R

elay Contr

olling a Z

VC

404/4

06 Zone V

alve Contr

ol

24 V A C ZONE 1 Z ONE 2 ZONE 3 ZONE 4 Z ONE 5 ZONE 6 MODE NORMAL RESET

FUSE (7 AMP MAX)

TT TT TT TT TT TT ZONE 6 PRIORITY OFF ON

ZVC 406

12 34 12 34 12 34 12 34 12 34 ZONE 1 ZONE 2 ZONE 3 ZONE 4 Z ONE 5 2 WIRE ZONE V A LV E

(NO END SWITCH)

JUMPER 3 & 4 T ACO 3 WIRE ZONE V A L V E 1 2 3 MOTOR END SWITCH THERMOSTAT THERMOSTAT THERMOSTAT 4 WIRE ZONE VALVE

(POWER OPEN, SELF CLOSING)

T STAT 1 VALVE 1 T STAT 2 VALVE 2 T STAT 3 VALVE 3 T STAT 4 VALVE 4 T STAT 5 VALVE 5 T STAT 6 VALVE 6 POWER

SIX ZONE ZONE VALVE CONTROL

24 VAC FACTORY INSTALLED TRANSFORMER 120 VAC INPUT WHITE BLACK POWER IN 24 VAC FACTORY INSTALLED TRANSFORMER 120 VAC INPUT WHITE BLACK N/O COM ZONE 6 RELAY END SWITCH EXTRA END SWITCH MAIN N/C

TO BOILER AQUASTAT RELAY

BOILER

H

N

SYSTEM PUMP

BOILER TURNS ON WHEN ANY ZONE VALVE OPENS.

12

34

ZONE 6 _PRIORITY ZONE

JUMPER 3 & 4

SEE NOTE

Note: When a circulator is used on the priority zone instead of a zone valve, jumper 3 and 4 of the priority zone.

TT

T

120 VAC INPUT DHW _HEATER CIRCULATOR POWER T STAT AQUASTAT ON DHW HEATER NZ C Z R HH H POWER INPUT 120VAC INPUT 120VAC OUTPUT CIRC _OUTPUT PRIORITY OUTPUT RESET POWER

CONTROLS FUSE 1 AMP

NORMAL SLAVE MASTER

END SWITCH ZONE VALVE THERMOSTAT EXPANSION X COM T/W T/R X1 1 22 4 3 JUMPER

TO: OPTIONAL ZONE VALVE OR iSeries MIXING VALVE

MODE

FUSE 5 AMP

SR 501-EXP

A

MASTER

SLAVE

(16)

2 Expandable Switching Relays Connected Together

ZONE 4 ON OFF PRIORITY 120V RELAY FUSE 1 AMP 24 VAC POWER 24 VAC POWER MASTER PLUG-IN CARDS RESET NORMAL SLAVE POWER CONTROL INTERFACE POWER CONTROL INTERFACE THERMOSTATS

ZONE1 ZONE2 ZONE3 ZONE4 POWER INPUT SR 504-EXP ZONE 2 POWER ZONE 1 ZONE 3 ZONE 4 JUMPER BOILER SWITCH SETTINGS Master/Slave: Slave Reset/Normal: Normal Priority Zone: Off

120 VAC INPUT H N SWITCH SETTINGS Master/Slave: Master Reset/Normal: Normal Priority Zone: On 12 34 EXPANSION 12 34 EXPANSION

SR504-EXP

SIX ZONE SWITCHING RELAY

ZONE 6 ON OFF PRIORITY 120V RELAY PLUG-IN CARDS FUSE 1 AMP SLAVE MASTER RESET NORMAL 120 VOLT CIRCULATORS ZC ZR X X END SWITCH POWER INPUT TO: "TT" ON BOILER

SR 506-EXP

ZONE 2 POWER ZONE 1 ZONE 3 ZONE 4 ZONE 5 ZONE 6 JUMPER DHW CIRCULATOR THERMOSTATS

SLAVE

MASTER

A AQUASTAT ON DHW HEATER T T

(17)

ZONE 4 ON OFF PRIORITY 120V RELA Y FUSE 1 AMP 24 V A C POWER ZONE 1 ZONE 2 ZONE 3 ZONE 4 120 VOL T CIRCULA TORS ZC ZR X X END SWITCH ZONE1 ZONE2 ZONE3 ZONE4 POWER INPUT

SR 504

ZONE 2

T T T BOILER ZONE 4 ON OFF PRIORITY 120V RELA Y FUSE 1 AMP 24 V A C POWER ZONE 1 ZONE 2 ZONE 3 ZONE 4 120 VAC INPUT TO: "TT" ON BOILER 120 VOL T CIRCULA TORS ZC ZR X X END SWITCH ZONE1 ZONE2 ZONE3 ZONE4 POWER INPUT

SR 504

ZONE 2

T T T H N A JUMPER JUMPER

SR 502

ZONE1 ZONE2 ZONE3 24 V A C POWER FUSE 1 AMP ZONE1 ZONE2 ZONE3 JUMPERS N P ZC H X ZR 1 X2 ZONE 2 POWER ZONE 1

TWO ZONE SWITCHING RELAY

A

PRIORITY

OFF

ZONE NOT USED ZONE NOT USED

MASTER

SLAVE

PRIORITY ON PRIORITY ON AQUASTATS ON DHW HEATERS

2 Indir

ect W

ater Heater

s with P

rior

it

y Connected to St

andar

d Switc

hing R

elays

(18)

BOILER 120 V AC INPUT TO: "TT" ON BOILER H N A

SR 502

ZONE1 ZONE2 ZONE3 24 V A C POWER FUSE 1 AMP ZONE1 ZONE2 ZONE3 JUMPERS N P ZC H X ZR 1 X2 ZONE 2 POWER ZONE 1

TWO ZONE SWITCHING RELAY

A PRIORITY OFF 12 34 EXPANSION

ZONE 4 ON OFF PRIORITY 120V RELA Y FUSE 1 AMP 24 V A C POWER MASTER PLUG-IN CARDS RESET NORMAL SLA VE

POWER CONTROL INTERF

ACE ZONE 1 Z ONE 2 Z ONE 3 ZONE 4 120 VOL T CIRCULA TORS ZC ZR X X END SWITCH ZONE1 ZONE2 ZONE3 ZONE4 POWER INPUT SR 504-EXP ZONE 2

JUMPER

SWITCH SETTINGS

Master/Slave: Master Reset/Normal: Normal Priority Zone: On

12

34

EXPANSION

SR504-EXP

T

ZONE 4 ON OFF PRIORITY 120V RELA Y FUSE 1 AMP 24 V A C POWER MASTER PLUG-IN CARDS RESET NORMAL SLA VE

ACE ZONE 1 Z ONE 2 Z ONE 3 ZONE 4 120 VOL T CIRCULA TORS ZC ZR X X END SWITCH ZONE1 ZONE2 ZONE3 ZONE4 POWER INPUT SR 504-EXP ZONE 2

JUMPER

SWITCH SETTINGS

Master/Slave: Slave Reset/Normal: Normal Priority Zone: Off

SR504-EXP

T DHW CIRCULATORS AQUASTATS ON DHW HEATERS

MASTER

SLAVE

ZONE NOT USED

2 Indir

ect W

ater Heater

s with P

rior

it

y Connected to E

XP Switc

hing R

elays

(19)

PC700 Boiler Reset Control Connected to SR501-EXP Switching Relay

ZONE CONTROL BOIL SEN OUT SEN BOILER SENSOR OUTDOOR SENSOR

PC700

BOILER SWITCH SETTINGS Master/Slave: Master Reset/Normal: Reset 120 VAC INPUT SYSTEM CIRCULATOR POWER T STAT TO: "TT" ON BOILER THERMOSTAT NZC ZRHH H POWER INPUT 120VAC INPUT 120VAC OUTPUT CIRC OUTPUT PRIORITY OUTPUT RESET POWER CONTROLS FUSE 1 AMP NORMAL MASTER SLAVE END SWITCH ZONE VALVE THERMOSTAT EXPANSION X X1 223 4T/RT/WCOM1 JUMPER

TO: OPTIONAL ZONE VALVE OR iSeries MIXING VALVE MODE FUSE 5 AMP

SR 501-EXP

H N

T

(20)

ZONE 4 ON OFF PRIORITY 120V RELAY 120 VOLT CIRCULATORS ZC ZR X X END SWITCH POWER INPUT 120 VAC INPUT ZONE1 ZONE2 ZONE3 ZONE4

ZONE1 ZONE2 ZONE3 ZONE4 FUSE 1 AMP 24 VAC POWER SR 504 ZONE 2 POWER ZONE 1 ZONE 3 ZONE 4 THERMOSTATS BOILER H N MASTER EXISTING ZONE CONTROL T PRIMARY SYSTEM CIRCULATOR (Optional) POWER T STAT TO: "TT" ON BOILER AQUASTAT ON DHW HEATER NZC ZRHH H POWER INPUT 120VAC INPUT 120VAC OUTPUT CIRC OUTPUT PRIORITY OUTPUT END SWITCH RESET OVERRIDE THERMOSTAT EXPANSION XX1 2234T/RT/WCOM1 JUMPER SR 501-EXP A RESET POWER CONTROLS FUSE 1 AMP NORMAL MASTER SLAVE MODE FUSE 5 AMP JUMPER DHW HEATER CIRCULATOR

Note: If Zone Control comes on without a call for heat, reverse Reset Override input (1 & 2) wires on SR501-EXP.

ZONE CONTROL BOIL SEN OUT SEN BOILER SENSOR OUTDOOR SENSOR PC700 K1-A K1-B K2-A K2-A K1 K2

SR501-EXP and PC700 Boiler Reset Control Connected to an Existing Switching Relay

ZONE1 ZONE2 ZONE3 ZONE4 FUSE 1 AMP 24 VAC POWER SR 504 ZONE 2 POWER ZONE 1 ZONE 3 ZONE 4 THERMOSTATS BOILER H N MASTER EXISTING ZONE CONTROL T POWER T STAT TO: "TT" ON BOILER AQUASTAT ON DHW HEATER END SWITCH RESET OVERRIDE THERMOSTAT EXPANSION XX1 2234T/RT/WCOM1 JUMPER A RESET POWER CONTROLS FUSE 1 AMP NORMAL MODE REMOVE JUMPER DHW HEATER CIRCULATOR ZONE CONTROL BOIL SEN OUT SEN BOILER SENSOR OUTDOOR SENSOR PC700 SLAVE NZC ZRHH H POWER INPUT 120VAC INPUT 120VAC OUTPUT CIRC OUTPUT PRIORITY OUTPUT SR 501-EXP MASTER SLAVE FUSE 5 AMP K1-A K1-B K2-A K2-A K1 K2

Connecting a DHW Heater to an Existing Heating Only Switching Relay

Using an SR501-EXP and PC700 Boiler Reset Control

(21)

SR501-EXP and PC700 Boiler Reset Control Connected to an Existing Zone Valve Control

120 VAC INPUT BOILER H N EXISTING ZONE CONTROL PRIMARY SYSTEM CIRCULATOR (Optional) POWER T STAT TO: "TT" ON BOILER END SWITCH RESET OVERRIDE THERMOSTAT EXPANSION XX12234T/RT/WCOM1 JUMPER RESET POWER CONTROLS FUSE 1 AMP NORMAL MODE DHW HEATER CIRCULATOR

Note: If Zone Control comes on without a call for heat, reverse Reset Override input (1 & 2) wires on SR501-EXP.

ZONE CONTROL BOIL SEN OUT SEN BOILER SENSOR OUTDOOR SENSOR PC700 24 VAC POWER IN

ZONE 2 ZONE 3 ZONE 4

MODE NORMAL RESET FUSE (3 AMP MAX) ZONE 1 TT TT TT TT ZONE 4 PRIORITY OFF ON N/O COM N/C

ZONE 4 RELAY 12 34ZONE 1 12 34ZONE 2

2 WIRE ZONE VALVE (NO END SWITCH) JUMPER

3 & 4

TACO 3 WIRE ZONE VALVE

1 2 3 12 34ZONE 3 MOTOREND SWITCH

4 WIRE ZONE VALVE (POWER OPEN, SELF CLOSING) T STAT 1 VALVE 1 T STAT 2 VALVE 2 T STAT 3 VALVE 3 T STAT 4 VALVE 4 POWER END SWITCH EXTRA END SWITCH MAIN 24 VAC FACTORYINSTALLED TRANSFORMER 120 VAC INPUT WHITE BLACK ZVC 404 FOUR ZONE ZONE VALVE CONTROL

WITH OPTIONAL PRIORITY 12 34ZONE 4 PRIORITY ZONE JUMPER 3 & 4 SEE NOTE THERMOSTATS T T T

AQUASTAT ON DHW HEATER

A

ZONE VALVE SYSTEM CIRCULATOR NZC ZRHH H POWER INPUT 120VAC INPUT 120VAC OUTPUT CIRC OUTPUT PRIORITY OUTPUT SR 501-EXP MASTER SLAVE FUSE 5 AMP K1-A K1-B K2-A K2-A K1 K2

Connecting a DHW Heater to an Existing Heating Only Zone Valve Control

Using an SR501-EXP and PC700 Boiler Reset Control

120 VAC INPUT BOILER H N EXISTING ZONE CONTROL DHW HEATER CIRCULATOR POWER T STAT TO: "TT" ON BOILER END SWITCH RESET OVERRIDE THERMOSTAT EXPANSION XX12234T/RT/WCOM1 JUMPER RESET POWER CONTROLS FUSE 1 AMP NORMAL MODE ZONE CONTROL BOIL SEN OUT SEN BOILER SENSOR OUTDOOR SENSOR PC700 24 VAC POWER IN

MODE NORMAL RESET FUSE (3 AMP MAX) ZONE 1TT TT TT TT ZONE 4 PRIORITY OFF ON N/O COM N/C

ZONE 4 RELAY _{12 34}ZONE 1 _{12 34}ZONE 2

2 WIRE ZONE VALVE (NO END SWITCH)

JUMPER 3 & 4

1 2 3 12 34 ZONE 3 MOTOREND SWITCH

4 WIRE ZONE VALVE (POWER OPEN, SELF CLOSING) T STAT 1 VALVE 1 T STAT 2 VALVE 2 T STAT 3 VALVE 3 T STAT 4 VALVE 4 POWER END SWITCH EXTRA END SWITCH MAIN 24 VAC FACTORYINSTALLED TRANSFORMER 120 VAC INPUT WHITE BLACK ZVC 404 FOUR ZONE ZONE VALVE CONTROL

WITH OPTIONAL PRIORITY 12 34ZONE 4

PRIORITY ZONE

JUMPER

3 & 4 _{SEE NOTE}

THERMOSTATS

T T T

AQUASTAT ON DHW HEATER A

ZONE VALVE SYSTEM CIRCULATOR MASTER SLAVE NZC ZRHH H POWER INPUT 120VAC INPUT 120VAC OUTPUT CIRC OUTPUT PRIORITY OUTPUT SR 501-EXP MASTER SLAVE FUSE 5 AMP K1-A K1-B K2-A K2-A K1 K2

(22)

SR501-EXP and PC700 Boiler Reset Control Connected to an Existing

Tankless Coil Boiler – Zoning with Circulators

ZONE1 ZONE2 ZONE3 ZONE4 FUSE 1 AMP 24 VAC POWER SR 504 ZONE 2 POWER ZONE 1 ZONE 3 ZONE 4 THERMOSTATS BOILER H N EXISTING ZONE CONTROL T POWER T STAT

TO: "ZR" ON BOILER CONTROL END SWITCH RESET OVERRIDE THERMOSTAT EXPANSION X X1 2234T/RT/WCOM1 JUMPER RESET POWER CONTROLS FUSE 1 AMP NORMAL MODE REMOVE JUMPER PRIMARY SYSTEM CIRCULATOR (Optional) ZONE CONTROL BOIL SEN OUT SEN BOILER SENSOR OUTDOOR SENSOR PC700

Boiler and Zone Control(s) need to be on same power supply (same circuit breaker). TO: "ZC" ON BOILER CONTROL

NZC ZRHH H POWER INPUT 120VAC INPUT 120VAC OUTPUT CIRC OUTPUT PRIORITY OUTPUT SR 501-EXP MASTER SLAVE FUSE 5 AMP K1-A K1-B K2-A K2-A K1 K2

SR501-EXP and PC700 Boiler Reset Control Connected to an Existing

Tankless Coil Boiler – Zoning with Zone Valves

120 VAC INPUT BOILER H N EXISTING ZONE CONTROL POWER T STAT END SWITCH RESET OVERRIDE THERMOSTAT EXPANSION X _X1₂₂₃₄T/RT/WCOM₁ JUMPER RESET POWER CONTROLS FUSE 1 AMP NORMAL MODE ZONE CONTROL BOIL SEN OUT SEN BOILER SENSOR OUTDOOR SENSOR PC700

Boiler and Zone Control(s) need to be on same power supply (same circuit breaker). 24 VAC

POWER IN

MODE NORMAL RESET FUSE (3 AMP MAX) ZONE 1 TT TT TT TT ZONE 4 PRIORITY OFF ON N/O COM N/C

ZONE 4 RELAY _{12 34}ZONE 1 _{12 34}ZONE 2

3 & 4

1 2 3 12 34 ZONE 3 MOTOREND SWITCH

4 WIRE ZONE VALVE (POWER OPEN, SELF CLOSING) T STAT 1 VALVE 1 T STAT 2 VALVE 2 T STAT 3 VALVE 3 T STAT 4 VALVE 4 POWER END SWITCH EXTRA END SWITCH MAIN 24 VAC FACTORYINSTALLED TRANSFORMER 120 VAC INPUT WHITE BLACK ZVC 404

FOUR ZONE ZONE VALVE CONTROL WITH OPTIONAL PRIORITY

12 34ZONE 4

PRIORITY ZONE

JUMPER

3 & 4 _{SEE NOTE}

THERMOSTATS

T T T

ZONE VALVE SYSTEM CIRCULATOR

MASTER

SLAVE

TO: "ZR" ON BOILER CONTROL

PRIMARY SYSTEM CIRCULATOR

(Optional)

TO: "ZC" ON BOILER CONTROL

NZC ZRHH H

POWER

INPUT 120VACINPUT120VACOUTPUTOUTPUTCIRC PRIORITYOUTPUT

SR 501-EXP MASTER SLAVE FUSE 5 AMP K1-A K1-B K2-A K2-A K1 K2

(23)

FOUR ZONE SWITCHING RELAY WITH OPTIONAL PRIORITY ZONE 4 ON OFF PRIORITY 120V RELA Y FUSE 1 AMP 24 V A C POWER MASTER 1234 PLUG-IN CARDS RESET NORMAL SLA VE

ACE THERMOST A T S ZONE 1 ZONE 2 ZONE 3 ZONE 4 120 V AC INPUT TO: "TT" ON BOILER 120 VOL T CIRCULA TORS ZC ZR

X X

END _SWITCH ZONE1 ZONE2 ZONE3 ZONE4 POWER INPUT ZONE 2

JUMPER H N ZONE CONTROL BOIL SEN OUT SEN BOILER SENSOR OUTDOOR SENSOR

PC700

_BOILER

SWITCH SETTINGS

Master/Slave: Master Reset/Normal: Reset Priority Zone: On or Off

SR 504-EXP

T

P

C700 Boiler R

eset Contr

ol Connected to E

XP Switc

hing R

elay

(24)

FOUR ZONE SWITCHING RELAY WITH OPTIONAL PRIORITY ZONE 4 ON OFF PRIORITY 120V RELA Y FUSE 1 AMP 24 V A C POWER MASTER 1234 PLUG-IN CARDS RESET NORMAL SLA VE

ACE THERMOST A T S ZONE 1 ZONE 2 ZONE 3 ZONE 4 120 V AC INPUT 120 VOL T CIRCULA TORS ZC ZR

X X

JUMPER

H N

ZONE

CONTROL

BOIL SEN

OUT SEN BOILER SENSOR OUTDOOR SENSOR

PC702

ST AGE 1 ST AGE 2 BOILER #2 BOILER #1 DHW DEMAND SWITCH SETTINGS

Master/Slave: Master Reset/Normal: Normal Priority Zone: On or Off

SR 504-EXP

WIRING NEEDED ONLY IF PRIORITY ZONE IS DHW

SYSTEM CIRCULATOR (OPTIONAL)

T

P

C70

2 2–St

age Boiler R

eset Contr

ol Connected to E

XP Switc

hing R

elay

(25)

FOUR ZONE SWITCHING RELAY WITH OPTIONAL PRIORITY ZONE 4 ON OFF PRIORITY 120V RELA Y FUSE 1 AMP 24 V A C POWER MASTER 1234 PLUG-IN CARDS RESET NORMAL SLA VE THERMOST A T S ZONE 1 ZONE 2 ZONE 3 ZONE 4 120 V AC INPUT TO: "TT" ON BOILER 120 VOL T CIRCULA TORS ZC ZR

X X

JUMPER

H

N

BOILER

SWITCH SETTINGS

ZONE CONTROL BOIL SEN OUT SEN BOILER SENSOR OUTDOOR SENSOR

PC705-2

SUP SEN SUPPL Y SENSOR INJECTION _CIRCULATOR SYSTEM CIRCULATOR AND/OR BOILER BLACK BLUE RED GREEN/GROUND

SR 504-EXP

(SEE NOTE B) NOTE A:

WHEN SYSTEM CIRCULATOR IS CONNECTED TO ZR TERMINAL ON SWITCHING RELAY, THE MODE SWITCH MUST BE SET TO NORMAL. THE PC705-2 WILL NOT RESET THE BOILER WHEN IN THE NORMAL MODE.

NOTE B:

WHEN SYSTEM CIRCULATOR IS CONNECTED TO RED WIRE ON PC705-2, THE CIRCULATOR WILL OPERATE ONLY WHEN THERMOSTAT CALLS FOR H

EAT

AND THE OUTDOOR TEMPERATURE IS BELOW THE WARM WEATHER SHUT DOWN (WWSD) TEMPERATURE. THE WWSD CAN BE ADJUSTED OR TURNED OFF SO THAT THE CIRCULATOR IS NOT AFFECTED BY OUTDOOR TEMPERATURE.

SYSTEM

CIRCULATOR

AND/OR BOILER (SEE NOTE A)

T

P

C70

5 V

ar

iable Speed P

ump Injection Contr

ol Connected to E

XP Switc

hing R

(26)

PC700 Boiler Reset Control Connected to 2 EXP Switching Relays

ZONE 4 ON OFF PRIORITY 120V RELAY FUSE 1 AMP 24 VAC POWER MASTER PLUG-IN CARDS RESET NORMAL SLAVE POWER CONTROL INTERFACE THERMOSTATS

ZONE1 ZONE2 ZONE3 ZONE4 POWER INPUT ZONE 2 POWER ZONE 1 ZONE 3 ZONE 4 JUMPER ZONE CONTROL BOIL SEN OUT SEN BOILER SENSOR OUTDOOR SENSOR PC700 BOILER SWITCH SETTINGS Master/Slave: Master Reset/Normal: Reset Priority Zone: On or Off

ZONE1 ZONE2 ZONE3 ZONE4 POWER INPUT ZONE 2 POWER ZONE 1 ZONE 3 ZONE 4 JUMPER H N SWITCH SETTINGS Master/Slave: Slave Reset/Normal: Normal Priority Zone: No Priority

12 34 EXPANSION 12 34 EXPANSION

SR 504-EXP

MASTER

SLAVE

T

(27)

PC702 2–Stage Boiler Reset Control Connected to 2 EXP Switching Relays

ZONE1 ZONE2 ZONE3 ZONE4 POWER INPUT ZONE 2 POWER ZONE 1 ZONE 3 ZONE 4 JUMPER SWITCH SETTINGS Master/Slave: Master Reset/Normal: Normal Priority Zone: On or Off

12 34 EXPANSION ZONE CONTROL BOIL SEN OUT SEN BOILER SENSOR OUTDOOR SENSOR PC702 STAGE 1 STAGE 2 BOILER #2 BOILER #1 DHW DEMAND

SR 504-EXP

MASTER

12 34 EXPANSION

SR 504-EXP

SLAVE

T

(28)

PC705 Variable Speed Pump Injection Control Connected to 2 EXP Switching Relays

ZONE 4 ON OFF PRIORITY 120V RELAY FUSE 1 AMP 24 VAC POWER MASTER PLUG-IN CARDS RESET NORMAL SLAVE THERMOSTATS

ZONE1 ZONE2 ZONE3 ZONE4 POWER INPUT ZONE 2 POWER ZONE 1 ZONE 3 ZONE 4 JUMPER BOILER SWITCH SETTINGS Master/Slave: Master Reset/Normal: Reset Priority Zone: On or Off

12 34 EXPANSION 12 34 EXPANSION ZONE CONTROL BOIL SEN OUT SEN BOILER SENSOR OUTDOOR SENSOR PC705-2 SUP SEN SUPPLY SENSOR INJECTION CIRCULATOR SYSTEM CIRCULATOR BLACK BLUE RED GREEN/GROUND

SR 504-EXP

MASTER

SLAVE

SYSTEM CIRCULATOR (OPTIONAL) (SEE NOTE A ON PAGE 23) (SEE NOTE B

ON PAGE 23)

T

(29)

PC700 and PC705 Controls Connected to 2 EXP Switching Relays

120 V AC INPUT TO: "TT" ON BOILER 120 VOLT CIRCULATORS ZC ZR X X END SWITCH

ZONE1 ZONE2 ZONE3 ZONE4 POWER INPUT ZONE 2 POWER ZONE 1 ZONE 3 ZONE 4 JUMPER ZONE CONTROL BOIL SEN OUT SEN BOILER SENSOR OUTDOOR SENSOR PC700 BOILER SWITCH SETTINGS Master/Slave: Master Reset/Normal: Reset Priority Zone: On or Off

ZONE1 ZONE2 ZONE3 ZONE4 POWER INPUT ZONE 2 POWER ZONE 1 ZONE 3 ZONE 4 H N SWITCH SETTINGS Master/Slave: Slave Reset/Normal: Normal Priority Zone: No Priority

12 34 EXPANSION 12 34 EXPANSION ZONE CONTROL BOIL SEN OUT SEN BOILER SENSOR OUTDOOR SENSOR PC705-2 SUP SEN SUPPLY SENSOR INJECTION CIRCULATOR SYSTEM CIRCULATOR BLACK BLUE RED GREEN/GROUND SYSTEM CIRCULATOR (OPTIONAL LOCATION) (SEE NOTE A ON PAGE 23)

SR 504-EXP

MASTER

SLAVE

JUMPER (SEE NOTE B ON PAGE 23)

T

(30)

PC702 and PC705 Controls Connected to 2 EXP Switching Relays

ZONE1 ZONE2 ZONE3 ZONE4 POWER INPUT ZONE 2 POWER ZONE 1 ZONE 3 ZONE 4 JUMPER SWITCH SETTINGS Master/Slave: Master Reset/Normal: Normal Priority Zone: On or Off

12 34 EXPANSION 12 34 EXPANSION ZONE CONTROL BOIL SEN OUT SEN BOILER SENSOR OUTDOOR SENSOR PC705-2 SUP SEN SUPPLY SENSOR INJECTION CIRCULATOR SYSTEM CIRCULATOR BLACK BLUE RED GREEN/GROUND SYSTEM CIRCULATOR (OPTIONAL LOCATION) (SEE NOTE A ON PAGE 23) ZONE CONTROL BOIL SEN OUT SEN BOILER SENSOR OUTDOOR SENSOR PC702 STAGE 1 STAGE 2 BOILER #2 BOILER #1 DHW DEMAND

SR 504-EXP

MASTER

SLAVE

(SEE NOTE B ON PAGE 23)

T

(31)

24 V A C ZONE 1 ZONE 2 ZONE 3 ZONE 4 ZONE 5

FUSE (5 AMP MAX)

TT TT TT TT TT

ZVC 405

12 34 12 34 12 34 12 34 12 34 ZONE 1 ZONE 2 ZONE 3 ZONE 4 ZONE 5 2 WIRE ZONE V A LV E

(NO END SWITCH)

JUMPER 3 & 4 T ACO 3 WIRE ZONE V A L V E 1 2 3 MOTOR END SWITCH THERMOSTAT THERMOSTAT

THERMOSTAT 4 WIRE ZONE VALVE

T STAT 1 VALVE 1 T STAT 2 VALVE 2 T STAT 3 VALVE 3 T STAT 4 VALVE 4 T STAT 5 VALVE 5 POWER

FIVE ZONE ZONE VALVE CONTROL

24 VAC FACTORY INSTALLED TRANSFORMER 120 VAC INPUT WHITE BLACK END SWITCH N/O COM N/C

POWER IN 24 VAC FACTORY INSTALLED TRANSFORMER 120 VAC INPUT WHITE BLACK

BOILER

H N SYSTEM PUMP

SYSTEM PUMP AND BOILER TURN ON WHEN ANY ZONE VALVE OPENS.

TT

T

ZV

C

40 3/4

05 with S

ystem P

ump

(32)

24 V A C ZONE 1 ZONE 2 ZONE 3 ZONE 4 ZONE 5 ZONE 6 MODE NORMAL RESET

FUSE (7 AMP MAX)

ZVC 406

(NO END SWITCH)

JUMPER 3 & 4 T ACO 3 WIRE ZONE V A L V E 1 2 3 MOTOR END SWITCH THERMOSTAT THERMOSTAT THERMOSTAT 4 WIRE ZONE VALVE

SIX ZONE ZONE VALVE CONTROL

WITH OPTIONAL PRIORITY

24 VAC FACTORY INSTALLED TRANSFORMER 120 VAC INPUT WHITE BLACK POWER IN 24 VAC FACTORY INSTALLED TRANSFORMER 120 VAC INPUT WHITE BLACK N/O COM ZONE 6 RELAY DRY CONT ACTS END SWITCH EXTRA END SWITCH MAIN N/C

BOILER

H N SYSTEM PUMP A AQUASTAT ON DHW HEATER

12

34

JUMPER 3 & 4

SEE NOTE

TT

T

ZV

C

404/4

06 with S

ystem P

ump

(33)

FUSE (7 AMP MAX)

ZVC 406

(NO END SWITCH)

SIX ZONE ZONE VALVE CONTROL

WITH OPTIONAL PRIORITY

24 VAC FACTORY INSTALLED TRANSFORMER 120 VAC INPUT WHITE BLACK POWER IN 24 VAC FACTORY INSTALLED TRANSFORMER 120 VAC INPUT WHITE BLACK N/O COM ZONE 6 RELAY END SWITCH EXTRA END SWITCH MAIN N/C 12 34

JUMPER 3 & 4

SEE NOTE

BOILER

H

N

DHW PUMP

A

BOILER TURNS ON WHEN ANY ZONE VALVE OPENS. DHW PUMP TURNS ON

ONLY

WHEN PRIORITY ZONE CALLS.

TT

T

ZV

C

404/4

06 with Domestic Hot W

ater (D

H

W) P

(34)

FUSE (7 AMP MAX)

ZVC 406

(NO END SWITCH)

SIX ZONE ZONE VALVE CONTROL

WITH OPTIONAL PRIORITY

JUMPER 3 & 4

SEE NOTE

BOILER

H

N

DHW PUMP

A

SYSTEM PUMP AND BOILER TURN ON WHEN ANY ZONE VALVE OPENS. DHW PUMP TURNS ON

ONLY

SYSTEM PUMP

TT

T

ZV

C

404/4

06 with S

ystem and D

H

W P

umps

(35)

FUSE (7 AMP MAX)

ZVC 406

(NO END SWITCH)

SIX ZONE ZONE VALVE CONTROL

WITH OPTIONAL PRIORITY

JUMPER 3 & 4

SEE NOTE

BOILER

H

N

DHW PUMP

A

SYSTEM PUMP AND BOILER TURN ON WHEN ANY ZONE VALVE OPENS. DHW PUMP TURNS ON

ONLY

SECONDARY PUMP COMES ON WHEN ANY ZONE CALLS

EXCEPT PRIORITY ZONE. SYSTEM PUMP SECONDARY PUMP

TT

T

ZV

C

404/4

06 with S

ystem, D

H

W and Secondary P

umps

(36)

2 ZVC404/406 Connected Together with Priority

24 VAC

POWER IN

ZONE 2 ZONE 3 ZONE 4 MODE

NORMAL RESET

FUSE (3 AMP MAX)

ZONE 1 TT TT TT TT ZONE 4 PRIORITY OFF ON N/O COM N/C ZONE 4 RELAY DRY CONTACTS 12 34 12 34 ZONE 1 ZONE 2

3 & 4

1 2 3

THERMOSTAT THERMOSTAT THERMOSTAT

12 34 ZONE 3

MOTOR END SWITCH

4 WIRE ZONE VALVE (POWER OPEN, SELF CLOSING) T STAT 1 VALVE 1 T STAT 2 VALVE 2 T STAT 3 VALVE 3 T STAT 4 VALVE 4 POWER END SWITCH EXTRA END SWITCH MAIN 24 VAC FACTORY INSTALLED TRANSFORMER 120 VAC INPUT WHITE BLACK

ZVC 404

12 34ZONE 4 PRIORITY ZONE JUMPER 3 & 4 SEE NOTE 24 VAC POWER IN

ZONE 2 ZONE 3 ZONE 4 MODE

NORMAL RESET

FUSE (3 AMP MAX)

ZONE 1 TT TT TT TT ZONE 4 PRIORITY OFF ON N/O COM N/C ZONE 4 RELAY

DRY CONTACTS

12 34 12 34

ZONE 1 ZONE 2

3 & 4

1 2 3

THERMOSTAT THERMOSTAT THERMOSTAT

12 34 ZONE 3

MOTOR END SWITCH

4 WIRE ZONE VALVE (POWER OPEN, SELF CLOSING) T STAT 1 VALVE 1 T STAT 2 VALVE 2 T STAT 3 VALVE 3 T STAT 4 VALVE 4 POWER END SWITCH EXTRA END SWITCH MAIN 24 VAC FACTORY INSTALLED TRANSFORMER 120 VAC INPUT WHITE BLACK

BOILER H N

A

AQUASTAT ON DHW HEATER PRIORITY ON PRIORITY ON TO BOILER AQUASTAT RELAY

ZVC 404

12 34ZONE 4 PRIORITY ZONE JUMPER 3 & 4 SEE NOTE

TT

T

TT

T

(37)

2 EXP Zone Valve Controls Connected Together with System Pump

ZONE 1 ZONE 2 ZONE 3 ZONE 4 ZONE 5 ZONE 6

FUSE 7 AMP MAX

TT TT TT TT TT TT

ZONE 6

OFF ON

12 34ZONE 1 12 34ZONE 2 12 34ZONE 3 12 34ZONE 4 12 34ZONE 5 12 34ZONE 6 MODE

NORMAL RESET

PRIORITY ZONE

1 2 3 JUMPER 3 & 4 MOTOR END SWITCH

4 WIRE ZONE VALVE (POWER OPEN, SELF CLOSING)

JUMPER 3 & 4 12 34 MASTER SLAVE POWER CONTROLS PLUG-IN CARDS PRIORITY

TACO, INC ZVC406-EXP

T STAT 1 T STAT 2 T STAT 3 T STAT 4 T STAT 5 T STAT 6 POWER ON VALVE 1 VALVE 2 VALVE 3 VALVE 4 VALVE 5 VALVE 6 SEE NOTE EXPANSION ZVC 406-EXP

SIX ZONE ZONE VALVE CONTROL WITH OPTIONAL PRIORITY 24 VAC POWER IN 24 VAC FACTORY INSTALLED TRANSFORMER 120 VAC INPUT WHITE BLACK

N/O COM ZONE 6 RELAY N/C END SWITCH A PUMP END SWITCH B BOILER H N BOILER 24 VAC FACTORY INSTALLED TRANSFORMER 120 VAC INPUT WHITE BLACK

FUSE 7 AMP MAX

TT TT TT TT TT TT

ZONE 6

OFF ON

12 34ZONE 1 12 34ZONE 2 12 34ZONE 3 12 34ZONE 4 12 34ZONE 5 MODE

NORMAL RESET

TACO 3 WIRE ZONE VALVE 1 2 3 JUMPER 3 & 4 MOTOR END SWITCH 4 WIRE ZONE VALVE (POWER OPEN, SELF CLOSING)

12 34 MASTER SLAVE POWER CONTROLS PLUG-IN CARDS PRIORITY

T STAT 1 T STAT 2 T STAT 3 T STAT 4 T STAT 5 T STAT 6 POWER ON VALVE 1 VALVE 2 VALVE 3 VALVE 4 VALVE 5 VALVE 6 EXPANSION ZVC 406-EXP

SIX ZONE ZONE VALVE CONTROL WITH OPTIONAL PRIORITY

POWER IN 24 VAC FACTORY INSTALLED TRANSFORMER 120 VAC INPUT WHITE BLACK DRY CONTACTS N/O COM ZONE 6 RELAYN/C END SWITCH A PUMP END SWITCH B BOILER 24 VAC FACTORY INSTALLED TRANSFORMER 120 VAC INPUT WHITE BLACK

SWITCH SETTINGS Master/Slave: Master Reset/Normal: Normal Priority Zone: On SWITCH SETTINGS Master/Slave: Slave Reset/Normal: Normal Priority Zone: Off

A

AQUASTAT ON_{DHW HEATER}

T

120 VAC INPUT 12 34 ZONE 6 PRIORITY ZONE JUMPER 3 & 4 SEE NOTE

MASTER

SLAVE

SYSTEM PUMP

(38)

2 EXP Zone Valve Controls Connected Together with DHW Pump

FUSE 7 AMP MAX

TT TT TT TT TT TT

ZONE 6

OFF ON

NORMAL RESET

PRIORITY ZONE

SIX ZONE ZONE VALVE CONTROL WITH OPTIONAL PRIORITY 24 VAC POWER IN 24 VAC FACTORY INSTALLED TRANSFORMER 120 VAC INPUT WHITE BLACK TO BOILER AQUASTAT RELAY N/O COM ZONE 6 RELAY N/C END SWITCH A PUMP END SWITCH B BOILER H N BOILER 24 VAC FACTORY INSTALLED TRANSFORMER 120 VAC INPUT WHITE BLACK

FUSE 7 AMP MAX

TT TT TT TT TT TT

ZONE 6

OFF ON

NORMAL RESET

A

T

MASTER

SLAVE

BOILER TURNS ON WHEN ANY ZONE VALVE OPENS. DHW PUMP TURNS ON ONLY WHEN PRIORITY ZONE CALLS.

DHW PUMP

(39)

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

FUSE 7 AMP MAX

TT TT TT TT TT TT

ZONE 6

OFF ON

NORMAL RESET

PRIORITY ZONE

FUSE 7 AMP MAX

TT TT TT TT TT TT

ZONE 6

OFF ON

NORMAL RESET

A

T

MASTER

SLAVE

SYSTEM PUMP AND BOILER TURN ON WHEN ANY ZONE VALVE OPENS. DHW PUMP TURNS ON ONLY WHEN PRIORITY ZONE CALLS.

DHW PUMP

SYSTEM PUMP

(40)

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

FUSE 7 AMP MAX

TT TT TT TT TT TT

ZONE 6

OFF ON

NORMAL RESET

PRIORITY ZONE

FUSE 7 AMP MAX

TT TT TT TT TT TT

ZONE 6

OFF ON

NORMAL RESET

A

T

MASTER

SLAVE

SYSTEM PUMP AND BOILER TURN ON WHEN ANY ZONE VALVE OPENS. DHW PUMP TURNS ON ONLY WHEN PRIORITY ZONE CALLS.

SECONDARY PUMP TURNS ON WHEN ANY ZONE CALLS, EXCEPT PRIORITY ZONE.

DHW PUMP

SYSTEM

PUMP _SECONDARY

(41)

P

C700 Boiler R

eset Contr

ol Connected T

o E

XP Zone V

alve Contr

ol

FUSE 7 AMP MAX

TT TT TT TT TT TT ZONE 6 OFF ON 12 34 ZONE 1 12 34 ZONE 2 12 34 ZONE 3 12 34 ZONE 4 12 34 ZONE 5 12 34 ZONE 6 MODE NORMAL RESET

INDIRECT WATER HEA

TER AQUAST AT OR THERMOST AT PRIORITY ZONE 2 WIRE ZONE V A LV E

(NO END SWITCH)

TA C O 3 WIRE ZONE V A LV E 1 2 3 JUMPER 3 & 4 MOTOR END SWITCH THERMOSTAT THERMOSTAT

T STAT 1 VALVE 1 T STAT 2 VALVE 2 T STAT 3 VALVE 3 T STAT 4 VALVE 4 T STAT 5 VALVE 5 T STAT 6 VALVE 6 POWER ON

SEE NOTE

EXPANSION

ZVC 406-EXP

24 VAC POWER IN 24 VAC FACTORY INSTALLED TRANSFORMER 120 VAC INPUT WHITE BLACK TO BOILER AQUASTAT RELAY DRY CONT ACTS N/O COM ZONE 6 RELAY N/C END SWITCH A PUMP END SWITCH B BOILER ZONE CONTROL BOIL SEN OUT SEN BOILER SENSOR OUTDOOR SENSOR

PC700

SYSTEM CIRCULATOR H N BOILER 24 VAC FACTORY INSTALLED TRANSFORMER 120 VAC INPUT WHITE BLACK Note: When a circulator is used on the priority zone instead of a zone valve, jumper 3 and 4 of the priority zone.

SWITCH SETTINGS

SYSTEM CIRCULATOR AND BOILER TURN ON WHEN ANY ZONE VALVE OPENS.

TT

(42)

P

C70

2 2–St

age Boiler R

eset Contr

ol Connected T

o E

XP Zone V

alve Contr

ol

FUSE 7 AMP MAX

INDIRECT WATER HEA

(NO END SWITCH)

SEE NOTE

EXPANSION

ZVC 406-EXP

24 VAC POWER IN 24 VAC FACTORY INSTALLED TRANSFORMER 120 VAC INPUT WHITE BLACK N/O COM ZONE 6 RELAY N/C END SWITCH A PUMP END SWITCH B BOILER SYSTEM CIRCULATOR H N BOILER #2 ZONE CONTROL BOIL SEN

OUT SEN BOILER SENSOR OUTDOOR SENSOR

PC702

ST AGE 1 ST AGE 2 BOILER #1 DHW DEMAND 24 VAC FACTORY INSTALLED TRANSFORMER 120 VAC INPUT WHITE BLACK Note: When a circulator is used on the priority zone instead of a zone valve, jumper 3 and 4 of the priority zone.

SWITCH SETTINGS _{Master/Slave: Master} _{Reset/Normal: Normal} _{Priority Zone: On or Off}

SYSTEM CIRCULATOR AND BOILER TURN ON WHEN ANY ZONE VALVE OPENS. DHW CIRCULATOR TURNS ON

ONLY

DHW

CIRCULATOR

TT

(43)

P

C70

5 V

ar

iable Speed P

ump Injection Contr

ol Connected T

o E

XP Zone V

alve Contr

ol

FUSE 7 AMP MAX

INDIRECT WATER HEA

(NO END SWITCH)

SEE NOTE

EXPANSION

ZVC 406-EXP

24 VAC POWER IN 24 VAC FACTORY INSTALLED TRANSFORMER 120 VAC INPUT WHITE BLACK TO BOILER AQUASTAT RELAY DRY CONT ACTS N/O COM ZONE 6 RELAY N/C END SWITCH A PUMP END SWITCH B BOILER H N BOILER 24 VAC FACTORY INSTALLED TRANSFORMER 120 VAC INPUT WHITE BLACK ZONE CONTROL BOIL SEN OUT SEN BOILER SENSOR OUTDOOR SENSOR

PC705-2

SUP SEN SUPPL Y SENSOR INJECTION _CIRCULATOR SYSTEM CIRCULATOR

(SEE NOTE B ON PAGE 23)

BLACK

BLUE

RED

GREEN/GROUND

SWITCH SETTINGS

SYSTEM CIRCULATOR _{(OPTIONAL LOCATION)}

SYSTEM CIRCULATOR AND BOILER TURN ON WHEN ANY ZONE VALVE OPENS.

TT

(44)

PC700 Boiler Reset Control Connected To 2 EXP Zone Valve Controls

FUSE 7 AMP MAX

TT TT TT TT TT TT

ZONE 6

OFF ON

NORMAL RESET

PRIORITY ZONE

T STAT 1 T STAT 2 T STAT 3 T STAT 4 T STAT 5 T STAT 6 POWER ON VALVE 1 VALVE 2 VALVE 3 VALVE 4 VALVE 5 VALVE 6 SEE NOTE EXPANSION ZVC 406-EXP SIX ZONE ZONE VALVE CONTROL

POWER IN 24 VAC FACTORY INSTALLED TRANSFORMER 120 VAC INPUT WHITE BLACK TO BOILER AQUASTAT RELAY N/O COM ZONE 6 RELAYN/C END SWITCH A PUMP END SWITCH B BOILER ZONE CONTROL BOIL SEN OUT SEN BOILER SENSOR OUTDOOR SENSOR PC700 SYSTEM CIRCULATOR H N BOILER

24 VAC FACTORY INSTALLED TRANSFORMER 120 VAC INPUT WHITE BLACK

FUSE 7 AMP MAX

TT TT TT TT TT TT

ZONE 6

OFF ON

NORMAL RESET

PRIORITY ZONE

T STAT 1 T STAT 2 T STAT 3 T STAT 4 T STAT 5 T STAT 6 POWER ON VALVE 1 VALVE 2 VALVE 3 VALVE 4 VALVE 5 VALVE 6 SEE NOTE EXPANSION ZVC 406-EXP SIX ZONE ZONE VALVE CONTROL

POWER IN 24 VAC FACTORY INSTALLED TRANSFORMER 120 VAC INPUT WHITE BLACK DRY CONTACTS N/O COM ZONE 6 RELAYN/C END SWITCH A PUMP END SWITCH B BOILER 24 VAC FACTORY INSTALLED TRANSFORMER 120 VAC INPUT WHITE BLACK SWITCH SETTINGS Master/Slave: Master Reset/Normal: Reset Priority Zone: On or Off

SWITCH SETTINGS Master/Slave: Slave Reset/Normal: Normal Priority Zone: Off

MASTER

SLAVE

INDIRECT WATER HEATER AQUASTAT OR THERMOSTAT 24 VAC T T T 24 VAC T T T

SYSTEM CIRCULATOR AND BOILER TURN ON WHEN ANY ZONE VALVE OPENS. DHW CIRCULATOR TURNS ON ONLY WHEN PRIORITY ZONE CALLS.

DHW CIRCULATOR