Taco SR501 Page 8 Wiring Manual Download

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

SIX ZONE SWITCHING RELAY

WITH OPTIONAL PRIORITY

ZONE 6

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

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

SR 503

ZONE1 ZONE2 ZONE3

24 VAC
POWER

FUSE 1 AMP

120 VOLT

CIRCULATORS

ZONE1 ZONE2 ZONE3

JUMPERS

N P ZC H X ZR

THREE ZONE SWITCHING RELAY

WITH OPTIONAL PRIORITY

MASTER

ZONE 2

POWER

ZONE 1

ZONE 3

SLAVE

PRIORITY ON

VIA JUMPER
PLACEMENT

REMOVE

JUMPER

PRIORITY

OFF

AQUASTAT

ON DHW

HEATER

Summary of Contents for SR501

Page 1: ...s 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 Contro...

Page 2: ......

Page 3: ...ls 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...

Page 4: ...TO TT ON BOILER SR501 1 ZONE SWITCHING RELAY POWER T STAT ALTERNATIVE WIRING 24 VAC POWERED INPUT SIGNAL N H REMOVE JUMPER DO NOT CONNECT POWER TO N AND H TERMINALS T STAT LIGHT WILL GO ON AND OFF WIT...

Page 5: ...NOTE No tankless coil priority 3...

Page 6: ...VICE SWITCH LOW WATER CUTOFF N P H X2 ZR 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 OF...

Page 7: ...OWER 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 VOLT CIRCULATORS ZONE1 ZONE2 ZONE3 120 VAC POWER JUMPER N P ZC H X ZR 1...

Page 8: ...E3 ZONE4 ZONE5 ZONE6 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 FUS...

Page 9: ...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 FOUR ZONE SWITCHING RELAY WITH OPTIONAL PRIORITY ZONE 4 ON OFF PRIORITY 120V RELAY FUSE 1...

Page 10: ...0 VAC INPUT TO TT ON BOILER ZONE1 ZONE2 ZONE3 ZONE4 ZONE5 ZONE6 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 ON OFF PRIORITY POWER...

Page 11: ...ONE 1 ZONE 2 ZONE 3 ZONE 4 120 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 T T T H N FOUR ZONE SWIT...

Page 12: ...20 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 T T T H N A SR 503 ZONE1 ZONE2 ZONE3 24 VAC POWER FU...

Page 13: ...120V RELAY FUSE 1 AMP ZONE 1 ZONE 2 ZONE 3 ZONE 4 120 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 T...

Page 14: ...ONE6 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 MASTER SLAVE T REMOVE JUMPER PRIORITY OFF DHW CIRCULATOR POWER T STAT TO TT ON BOILER AQUASTA...

Page 15: ...R 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 Z...

Page 16: ...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 1 2 3 4 EXPANSION 1...

Page 17: ...END SWITCH ZONE1 ZONE2 ZONE3 ZONE4 POWER INPUT SR 504 ZONE 2 POWER ZONE 1 ZONE 3 ZONE 4 T T T H N A JUMPER JUMPER SR 502 ZONE1 ZONE2 ZONE3 24 VAC POWER FUSE 1 AMP ZONE1 ZONE2 ZONE3 JUMPERS N P ZC H X...

Page 18: ...NPUT SR 504 EXP ZONE 2 POWER ZONE 1 ZONE 3 ZONE 4 JUMPER SWITCH SETTINGS Master Slave Master Reset Normal Normal Priority Zone On 1 2 3 4 EXPANSION SR504 EXP T FOUR ZONE SWITCHING RELAY WITH OPTIONAL...

Page 19: ...Normal Reset 120 VAC INPUT SYSTEM CIRCULATOR POWER T STAT TO TT ON BOILER THERMOSTAT N ZC ZR H H H POWER INPUT 120VAC INPUT 120VAC OUTPUT CIRC OUTPUT PRIORITY OUTPUT RESET POWER CONTROLS FUSE 1 AMP N...

Page 20: ...N BOILER SENSOR OUTDOOR SENSOR PC700 K1 A K1 B K2 A K2 A K1 K2 18 SR501 EXP and PC700 Boiler Reset Control Connected to an Existing Switching Relay FOUR ZONE SWITCHING RELAY WITH OPTIONAL PRIORITY ZON...

Page 21: ...OR N ZC ZR H H 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 Zon...

Page 22: ...ONE CONTROL POWER T STAT END SWITCH RESET OVERRIDE THERMOSTAT EXPANSION X COM T W T R X 1 1 2 2 4 3 JUMPER RESET POWER CONTROLS FUSE 1 AMP NORMAL MODE ZONE CONTROL BOIL SEN OUT SEN BOILER SENSOR OUTDO...

Page 23: ...E 2 ZONE 3 ZONE 4 120 VAC 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 H N ZONE CONTROL BOIL SEN OUT SEN...

Page 24: ...ATORS ZC ZR X X END SWITCH ZONE1 ZONE2 ZONE3 ZONE4 POWER INPUT ZONE 2 POWER ZONE 1 ZONE 3 ZONE 4 JUMPER H N ZONE CONTROL BOIL SEN OUT SEN BOILER SENSOR OUTDOOR SENSOR PC702 STAGE 1 STAGE 2 BOILER 2 BO...

Page 25: ...R 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 MU...

Page 26: ...N BOILER SENSOR OUTDOOR SENSOR PC700 BOILER SWITCH SETTINGS Master Slave Master Reset Normal Reset Priority Zone On or Off FOUR ZONE SWITCHING RELAY WITH OPTIONAL PRIORITY ZONE 4 ON OFF PRIORITY 120V...

Page 27: ...or Off 1 2 3 4 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 WIRING NEEDED ONLY IF PRIORITY ZONE IS DHW MASTER FOUR...

Page 28: ...TCHING RELAY WITH OPTIONAL PRIORITY ZONE 4 ON OFF PRIORITY 120V RELAY FUSE 1 AMP 24 VAC POWER MASTER PLUG IN CARDS RESET NORMAL SLAVE POWER CONTROL INTERFACE THERMOSTATS ZONE 1 ZONE 2 ZONE 3 ZONE 4 12...

Page 29: ...Reset Priority Zone On or Off FOUR ZONE SWITCHING RELAY WITH OPTIONAL PRIORITY ZONE 4 ON OFF PRIORITY 120V RELAY FUSE 1 AMP 24 VAC POWER MASTER PLUG IN CARDS RESET NORMAL SLAVE THERMOSTATS ZONE 1 ZONE...

Page 30: ...AMP 24 VAC POWER MASTER PLUG IN CARDS RESET NORMAL SLAVE THERMOSTATS ZONE 1 ZONE 2 ZONE 3 ZONE 4 120 VAC INPUT 120 VOLT CIRCULATORS ZC ZR X X END SWITCH ZONE1 ZONE2 ZONE3 ZONE4 POWER INPUT ZONE 2 POWE...

Page 31: ...HERMOSTAT 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 POWER FIVE ZONE ZONE VALVE CONTROL 24 VAC FACTORY INSTALLED TRA...

Page 32: ...AT 4 VALVE 4 T STAT 5 VALVE 5 T STAT 6 VALVE 6 POWER SIX ZONE ZONE VALVE CONTROL WITH OPTIONAL PRIORITY 24 VAC FACTORY INSTALLED TRANSFORMER 120 VAC INPUT WHITE BLACK POWER IN 24 VAC FACTORY INSTALLED...

Page 33: ...5 VALVE 5 T STAT 6 VALVE 6 POWER 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...

Page 34: ...5 T STAT 6 VALVE 6 POWER 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...

Page 35: ...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 E...

Page 36: ...EE NOTE 24 VAC POWER IN ZONE 2 ZONE 3 ZONE 4 MODE NORMAL RESET FUSE 3 AMP MAX ZONE 1 T T T T T T T T ZONE 4 PRIORITY OFF ON N O COM N C ZONE 4 RELAY TO BOILER AQUASTAT RELAY DRY CONTACTS 1 2 3 4 1 2 3...

Page 37: ...AMP MAX T T T T T T T T T T T T ZONE 6 OFF ON 1 2 3 4 ZONE 1 1 2 3 4 ZONE 2 1 2 3 4 ZONE 3 1 2 3 4 ZONE 4 1 2 3 4 ZONE 5 MODE NORMAL RESET 2 WIRE ZONE VALVE NO END SWITCH TACO 3 WIRE ZONE VALVE 1 2 3...

Page 38: ...T T T T T T T T ZONE 6 OFF ON 1 2 3 4 ZONE 1 1 2 3 4 ZONE 2 1 2 3 4 ZONE 3 1 2 3 4 ZONE 4 1 2 3 4 ZONE 5 MODE NORMAL RESET 2 WIRE ZONE VALVE NO END SWITCH TACO 3 WIRE ZONE VALVE 1 2 3 JUMPER 3 4 MOTO...

Page 39: ...T T T T ZONE 6 OFF ON 1 2 3 4 ZONE 1 1 2 3 4 ZONE 2 1 2 3 4 ZONE 3 1 2 3 4 ZONE 4 1 2 3 4 ZONE 5 MODE NORMAL RESET 2 WIRE ZONE VALVE NO END SWITCH TACO 3 WIRE ZONE VALVE 1 2 3 JUMPER 3 4 MOTOR END SW...

Page 40: ...1 1 2 3 4 ZONE 2 1 2 3 4 ZONE 3 1 2 3 4 ZONE 4 1 2 3 4 ZONE 5 MODE NORMAL RESET 2 WIRE ZONE VALVE NO END SWITCH TACO 3 WIRE ZONE VALVE 1 2 3 JUMPER 3 4 MOTOR END SWITCH 4 WIRE ZONE VALVE POWER OPEN S...

Page 41: ...AT 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 POWE...

Page 42: ...WER 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 IN...

Page 43: ...N 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 W...

Page 44: ...VAC FACTORY INSTALLED TRANSFORMER 120 VAC INPUT WHITE BLACK ZONE 1 ZONE 2 ZONE 3 ZONE 4 ZONE 5 ZONE 6 FUSE 7 AMP MAX T T T T T T T T T T T T ZONE 6 OFF ON 1 2 3 4 ZONE 1 1 2 3 4 ZONE 2 1 2 3 4 ZONE 3...

Page 45: ...E 6 MODE NORMAL RESET PRIORITY ZONE 2 WIRE ZONE VALVE NO END SWITCH TACO 3 WIRE ZONE VALVE 1 2 3 JUMPER 3 4 MOTOR END SWITCH 4 WIRE ZONE VALVE POWER OPEN SELF CLOSING JUMPER 3 4 1 2 3 4 MASTER SLAVE P...

Page 46: ...TROL BOIL SEN OUT SEN BOILER SENSOR OUTDOOR SENSOR PC705 2 SUP SEN SUPPLY SENSOR INJECTION CIRCULATOR SYSTEM CIRCULATOR BLACK BLUE RED GREEN GROUND ZONE 1 ZONE 2 ZONE 3 ZONE 4 ZONE 5 ZONE 6 FUSE 7 AMP...

Page 47: ...ZONE 6 FUSE 7 AMP MAX T T T T T T T T T T T T ZONE 6 OFF ON 1 2 3 4 ZONE 1 1 2 3 4 ZONE 2 1 2 3 4 ZONE 3 1 2 3 4 ZONE 4 1 2 3 4 ZONE 5 1 2 3 4 ZONE 6 MODE NORMAL RESET PRIORITY ZONE 2 WIRE ZONE VALVE...

Page 48: ...ZONE 5 1 2 3 4 ZONE 6 MODE NORMAL RESET PRIORITY ZONE 2 WIRE ZONE VALVE NO END SWITCH TACO 3 WIRE ZONE VALVE 1 2 3 JUMPER 3 4 MOTOR END SWITCH 4 WIRE ZONE VALVE POWER OPEN SELF CLOSING JUMPER 3 4 1 2...

Page 49: ...ional Power Wire to Thermostat that Requires 24VAC To Aquastat on Return Line of Hydro Coil Dry Contacts To T T on Boiler or Switching Relay Power On Call for Heat Fan Cooling Fan Heating Outdoor Cond...

Page 50: ...onal Power Wire to Thermostat that Requires 24VAC To Aquastat on Return Line of Hydro Coil Dry Contacts To T T on Boiler or Switching Relay Power On Call for Heat Fan Cooling Fan Heating Outdoor Conde...

Page 51: ...FAN CONTROL T T WATER COIL FREEZE PR To Optional Aquastat or Thermostat to sense low ambient temperature Hot Neutral Circulator X X PUMP 5 AMP 1 6 HP RATED DRY CONTACTS 1 MIN ON DELAY FAN 3 MIN ON DEL...

Page 52: ...ATER COIL FREEZE PR To Optional Aquastat or Thermostat to sense low ambient temperature Hot Neutral Circulator X X PUMP 5 AMP 1 6 HP RATED DRY CONTACTS 1 MIN ON DELAY FAN 3 MIN ON DELAY FAN 2 MIN 24 H...

Page 53: ...STAT T T BOILER AIR HANDLER G G X X C R Y C R G Y T W THERMOSTAT AQUASTAT HAFC101 HYDRO AIR FAN CONTROL M Low High Line 24 VAC Fan Relays LOW HIGH 2 SPEED AIR HANDLER THERMOSTAT T T BOILER AIR HANDLER...

Page 54: ...ZONE 1 ZONE 2 ZONE 3 ZONE 4 ZONE 5 T T T T T T T T T T ZVC 405 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 ZONE 1 ZONE 2 ZONE 3 ZONE 4 ZONE 5 2 WIRE ZONE VALVE NO END SWITCH JUMPER 3 4 3 WIRE ZONE VALVE...

Page 55: ...ZONE VALVE HONEYWELL TYPE 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 WH...

Page 56: ...LVE HONEYWELL TYPE 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 BLAC...

Page 57: ...120 VOLT CIRCULATORS ZONE1 ZONE2 ZONE3 JUMPERS N P ZC H X ZR 1 X2 THREE ZONE SWITCHING RELAY WITH OPTIONAL PRIORITY ZONE 2 POWER ZONE 1 ZONE 3 TO 120 VAC POWER NEUTRAL TO 120 VAC POWER HOT TO TT ON A...

Page 58: ...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 CO...

Page 59: ...r Sensor Boiler Injection Circulator Radiant Circulator Line Cord To Zone Control End Switch or Thermostat Off Enable On Control Boiler Operation Sup Var Pump Fuse Front of Control Supply Sensor Boile...

Page 60: ...ITY SR503 EXP FUSE 1 AMP 24 VAC POWER ON OFF ZONE 3 PRIORITY RESET NORMAL POWER CONTROL INTERFACE MASTER SLAVE 1 2 3 4 EXPANSION PLUG IN CARDS ZONE3 ZONE2 ZONE1 INPUT 120 VOLT CIRCULATORS POWER ZONE3...

Page 61: ...nstant Speed Circulator Heating System Circulator Snowmelt Heat Source Circulator Line Cord To Zone Control End Switch or Thermostat Relay or Mechanical Type Off Enable On Control Boiler Operation Sup...

Page 62: ...able On Control Boiler Operation Pump Outdoor Sensor Boiler H N Factory Installed Transformer HEAT SOURCE T T T Input from Heat Source H N ComSup BoilOut Heat Dem Com Com Sys Ret Power Input N P ZC H...

Page 63: ...D SPEED CIRCULATOR 4 PIN PLUG VARIABLE SPEED CIRCULATOR 3 PIN PLUG HEAT SOURCE Tb Ts Note 1 There must be no more than 4 pipe diameters between the tees in the boiler and system loops in order to prev...

Page 64: ...ING RELAY 120 VAC INPUT T T COM W R 24 VAC End Switch Outdoor Sensor System Supply Sensor Boiler Return Sensor SENSOR COMMON C R 24 VAC POWER INPUT BOILER POWER GREEN SENSOR ERROR RED SUPPLY OUTDOOR i...

Page 65: ...Switching Relay with DHW Priority 24 Volt Transformer C R 24 VAC POWER INPUT SENSOR COMMON BOILER SUPPLY OUTDOOR POWER GREEN SENSOR ERROR RED BACK OF iVALVE R MIXING VALVE ACTUATOR M M H N THREE ZONE...

Page 66: ...del R8285 or Equivalent TACO LTR0243T 1 YEL RED WH YEL GRN FACTORY WIRING MALE CONNECTOR GROUND CONNECTION FEMALE CONNECTOR GAS VALVE 120 VAC TACO LTR0243T 1 YEL RED WH YEL GRN LIMIT CONTROLS 24 VAC C...

Page 67: ...ng Boilers with a United Technologies Ucontrol or other Integrated Control Modules which accept a 4 pin harness and a Taco LTR0243L 1 4 PIN CONNECTOR 2 4 PIN CONNECTOR 1 WIRING HARNESS INTEGRATED CONT...

Page 68: ...nd LTA0243S 2 24 VAC to be supplied by an EXTERNAL Class 2 power source to terminals H and N For 120 VAC models LNA120xx and LTA1203S 2 120 VAC is supplied by an external circuit to terminals H and N...

Page 69: ...NOTE For 24 VAC models LTx024xx 1 24 VAC to be supplied by an EXTERNAL Class 2 power source to terminals H and N For 120 VAC models LTx120xx 1 120 VAC is supplied by an external circuit to terminals H...

Page 70: ...only NOTE For 24 VAC models LFx024xx 24 VAC to be supplied by an EXTERNAL Class 2 power source to terminals H and N For 120 VAC models LFx120xx 120 VAC is supplied by an external circuit to terminals...

Page 71: ...24 PS 852 M 24 PS 852 SP M 24 PS 850 M 24 500 500SV 700 OEM24MC LFA1203R 1 LTA1203R 1 750 T 120 750 120 650R LFM1203R 1 LTM1203R 1 750 MT 120 750 M 120 550R LFA1202R 1 LTA1202R 1 PS 851 RX2 120 650R...

Page 72: ...IRCUIT HOT NEUTRAL 120 VAC CIRCUIT McDONNELL MILLER PS 801 851 120 w Red Green LEDs FACTORY INSTALLED JUMPER 120 VAC Models with 24 VAC Burner Circuits TACO LFx120x NC COM NO H N GND P BURNER CIRCUIT...

Page 73: ...IRCUIT N H C W B BURNER CIRCUIT HOT NEUTRAL 24 VAC CIRCUIT McDONNELL MILLER PS 802 852 24 FACTORY INSTALLED JUMPER 24 VAC Models with 120 VAC Burner Circuits TACO LFx024x NC COM NO H N GND P BURNER CI...

Page 74: ...LLED JUMPER McDONNELL MILLER H N CUT OFF BURNER CIRCUIT HOT NEUTRAL 120 VAC CIRCUIT HYDROLEVEL 1150 120 VAC Models with 24 VAC Burner Circuits TACO LTA1203S 2 N H COM NC NO RB 120 1 2 3 4 5 RB 122E N...

Page 75: ...ow Wire White Wire Red Wire Yellow Wire Yellow Wire White Wire Red Wire McDONNELL MILLER FACTORY INSTALLED JUMPER TACO LTR0243T 1 BURNER CIRCUIT HOT NEUTRAL 24 VAC CIRCUIT Yellow Wire Yellow Wire Whit...

Page 76: ...STALLED JUMPER Wiring Taco LF Series Low Water Cutoffs to Taco Electric Water Feeder with Different Burner Voltages NC NO H N Taco L Fx1 20x GND P BUR NER CIRC UIT 12 0 V A C CIRC UIT HOT NE U TR AL H...

Page 77: ...on some LW COs INSTALLED JUMPER COM NO P1 A C W Wiring Taco 120VAC Electric Water Feeder to Taco LF Series 120VAC Low Water Cutoff or 120VAC McDonnell Miller or Hydrolevel Low Water Cutoffs NC NO H N...

Page 78: ...d WF 2 switch to position 3 100 sec delay 90 sec feed Wiring TACO LTA 2 or LF Series 120VAC Low Water Cutoff to McDonnell Miller Series WF2 Uni Match Electric Water Feeder UNI MATCH WATER FEEDER MODEL...

Page 79: ...oltages Do not connect feeder to a manual reset LWCO Wiring TACO LF Series 120VAC Low Water Cutoff to Hydrolevel VXT 120 Water Feeder Non Display Model SAFGARD VXT 120 WATER FEEDER 120VAC SUPPLY 50 60...

Page 80: ...oltages Do not connect feeder to a manual reset LWCO Wiring TACO LTA 2 or LF Series 120VAC Low Water Cutoff to Hydrolevel VXT 120 Programmable Water Feeder Model with Display SAFGARD VRTX 120 WATER FE...

Page 81: ...Red Green LEDs H N C B W J3 Chassis GND McDonnell Miller Series 750 1 2 3 5 4 P Chassis GND McDonnell Miller RB 122 H Black Wire N White Wire C Yellow Wire B Yellow Wire McDonnell Miller RB 120 1 2 3...

Page 82: ...OR EQUAL 120 VAC INPUT C1 ZC END SWITCH B1 B2 T T L1 HOT L2 NEUTRAL CIRCULATOR ON BOILER IF ATTACHED L1 C2 L2 TACO ZONE CONTROL HONEYWELL L8124B OR EQUAL 120 VAC INPUT C MILLI VOLTAGE GAS VALVE END SW...

Page 83: ...AY OR GAS VALVE 81 L1 L2 T T L1 HOT L2 NEUTRAL LINE VOLTAGE OIL BURNER RELAY OR GAS VALVE CIRCULATOR ON BOILER IF ATTACHED B2 C1 B1 ZR TACO ZONE CONTROL HONEYWELL L8124M OR EQUAL 120 VAC INPUT C2 ZC E...

Page 84: ...TV W T L1 HOT L2 NEUTRAL CIRCULATOR ON BOILER IF ATTACHED L1 C2 L2 TACO ZONE CONTROL HONEYWELL L8148J OR EQUAL 120 VAC INPUT C1 LOW VOLTAGE GAS VALVE END SWITCH B1 B3 Z TP B2 MILLI VOLTAGE GAS VALVE...

Page 85: ...T CIRCULATOR ON BOILER IF ATTACHED B2 C2 B1 C1 HONEYWELL L8124G L OR EQUAL 120 VAC INPUT ZR L1 L2 NEUTRAL L2 ZC LINE VOLTAGE OIL BURNER RELAY OR GAS VALVE T THERMOSTAT IF INDEPENDENT ZONE TACO SWITCHI...

Page 86: ...0 VAC INPUT T THERMOSTAT IF INDEPENDENT ZONE R W B B R L6006 LOW LIMIT CONTROLER B2 TACO SWITCHING RELAY ZC ZR N H X X END SWITCH L1 L2 B2 C2 B1 L1 HOT L2 NEUTRAL OIL BURNER AND IGNITION CIRCULATOR ON...

Page 87: ...OR NOTE The green wire must be connected to a ground source electrically common to the boiler ground Wiring for Boilers with Honeywell Aquastat Model L8148E or Equivalent TV W T L1 HOT L2 NEUTRAL CIRC...

Page 88: ...E B1 B2 HONEYWELL L8148E TACO LNA024 or LTA024 2 N H COM NC NO SPILL SWITCH B R Z G TO THERMOSTAT Aquastat Wiring to 120VAC Low Water Cutoff TV W T L1 HOT L2 NEUTRAL CIRCULATOR ON BOILER IF ATTACHED L...

Page 89: ...Snap in PC Board Simplified Wiring Fully Enclosed Snap Out Relays 100 Factory Tested Contractor Friendly PC Board Layout Universal Thermostat Compatibility UL Approved Extended 3 Year Warranty Made i...

Page 90: ...BLE RELAY CIRCULATOR THERMOSTAT TO 120 VAC POWER CIRCULATOR TO TT ON BOILER JUMPER R W T T L2 L1 3 4 5 6 120 VAC INPUT POWER T STAT UNIVERSAL REPLACEMENT RELAY MODEL SR501 845RP REPLACES HONEYWELL R84...

Page 91: ...ernal Diagnostics Externally visible lights show full functionality of the switching relay The green light should always be on indicating that power is connect ed When the thermostat calls for heat bo...

Page 92: ...hp 7 2A 120 VAC Instruction Sheet SR504 SR506 Switching Relay Features External Indicator Lights Switchable Priority Simplified Wiring Fully Enclosed Snap Out Relays Compact Design Fuse Protected 100...

Page 93: ...erminal on the aquastat control Connect terminal ZR to ZR terminal on the aquastat control Confirm polarity is consistent between boiler aquastat and switching relay Power Input Connect 120 volt ac po...

Page 94: ...tion When any thermostat calls for heat the appropriate circulator is energized and the isolated end switch X and X will start the boiler Priority Operation When zone 6 is switched to the priority set...

Page 95: ...connections must be made in accordance with all applicable electrical codes Use copper wire only Failure to follow this instruction can result in personal injury or death and or property damage 10 18...

Page 96: ...of the Taco Zone Valves Priority Zoning Circulators Thermostats and the 00 family of circulators with the advanced features of the Taco Zone Controls to achieve total system integration No matter the...

Page 97: ...ort options Set all other daisy chained controls to SLAVE Connect thermostat wire 18 22 gauge between terminals 1 2 3 4 on the master control to the corresponding 1 2 3 4 on the SLAVE control s Contro...

Page 98: ...ent temperature Hot Neutral Circulator X X PUMP 5 AMP 1 6 HP RATED DRY CONTACTS 1 MIN ON DELAY FAN 3 MIN ON DELAY FAN 2 MIN 24 HR PUMP 30 SEC 2 WK PUMP OFF ON Jumper or to T T on switching relay 2 Spe...

Page 99: ...d LED light is energized only when the Priority Protection Card is operating in priority override mode Installation The PC605 can be installed in any unoccupied PowerPort terminal located on the Taco...

Page 100: ...relative to ground H or L1 Hot side of line voltage N or L2 Neutral side of line voltage ZR 120 VAC Hot signal from switching relay to boiler s operating aquastat to fire the burner to high limit whe...

Page 101: ...rity and 3 Power Ports SR503 EXP ARM 861 DP 5 6 ARM 3P 4 Zone Switching Relay with Priority and 3 Power Ports SR504 EXP ARM 842 DP 5 6 ARM 4P 6 Zone Switching Relay with Priority and 3 Power Ports SR5...

Page 102: ...lt Replacement Relay SR120 001RP R 49 NOTES 1 Does not have both normally open and normally closed contacts 2 Has only one set of normally open contacts SPST 3 Does not have optional priority 4 Can be...

Page 103: ......

Page 104: ...t Cranston RI 02920 Telephone 401 942 8000 FAX 401 942 2360 TACO Canada Ltd 8450 Lawson Road Unit 3 Milton Ontario L9T 0J8 Telephone 905 564 9422 FAX 905 564 9436 Visit our web site at http www taco h...

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