TACO manuals, parts lists, wiring diagrams for HVAC equipment:

Heat Pumps. Here we provide free downloadable copies of installation and service manuals TACO controls & equipment.

Taco Comfort Solutions Manuals Wiring Diagrams, Contact

Taco provides electronic controls for HVAC systems, thermostats, fan controls fuel mizer, zone controls, switching relays, and other equipment.

Illustration: an excerpt from Taco's wiring instructions for the Taco SR504-4 Switching Relay used for heating boilers - in this example where a tankless coil is not employed.

[Click to enlarge any image]

• Contact: TACO, INC., 1160 Cranston Street, Cranston, RI 02920 USA Tel: (401) 942-8000 FAX: (401) 942-2360.
  
  TACO (Canada), Ltd., 8450 Lawson Road, Unit #3, Milton, Ontario L9T 0J8 Canada Tele: 905/564-9422. FAX: 905/564-9436.
  
  Website: http://www.taco-hvac.com
• Taco, Inc. International Sales Department 1160 Cranston Street Cranston, RI 02920 Phone: (401) 942-8000
• TACO® ALL ZONE CONTROLS, WIRING GUIDE [PDF] (2010) Taco Catalog No. 100-92 (2010) provides wiring instructions for virtually every Taco HVAC control such as switching relays, zone valves, hydro-air controls, specialty thermostats and zone valves, radiant heat mixing block controller, iSeries mixing valves, Low Water Cutoff controls, Electric Water Feeders, Aquastats.
  
  Wiring guides for Taco controls and circulators are also found at https://www.tacocomfort.com/product/radiant-mixing-block/# [as of 2012/01/25]
• TACO® ALL ZONE CONTROLS WIRING GUIDE [PDF] (2005), Taco Catalog No. 100-9.0, older version of wiring instructions superceded by the document above.
• AIR ELIMINATION from HYDRONIC HEATING SYSTEMS [PDF], TACO, INC., 1160 Cranston Street, Cranston, RI 02920 USA Tel: (401) 942-8000, or TACO (Canada), Ltd., 6180 Ordan Drive, Mississauga, Ontario L5T 2B3 Canada, Tel: 905/564-9422, retrieved 2017/07/15, original source https://www.taco-hvac.com/uploads/FileLibrary/AirElimination.pdf
• TACO® LOW WATER CUTOFF (LWCO) LN-SERIES INSTRUCTIONS [PDF] used for hot water boilers, steam boilers, residential to industrial models, also used to prevent running a pump "dry", retrieved 2017/07/15,
• TACO LOW WATER CUTOFF (LTR-Series) [PDF]
• TACO LOW WATER CUTOFF ( LT-Series) [PDF]
• TACO LOW WATER CUTOFF Model 102-350 [PDF]
• TACO LOW WATER CUTOFF INSTRUCTIONS [PDF]
• TACO® 100-SERIES INLINE CIRCULATOR PUMP INSTRUCTIONS [PDF] retrieved 2017/07/15, original source: [citation needed]
• TACO® 102-141 VARIABLE SPEED CIRCULATOR [PDF]
  Excerpt:
  The Variable Speed - Outdoor Reset ”00” Cartridge Circulator (00-VR) is a microprocessor-based pump designed to regulate the supply water temperature to a heating system through variable speed injection mixing.
  
  The 00-VR modulates its speed to provide outdoor reset to the heating system. A boiler sensor installed on the return line to the boiler is used to protect the boiler against flue gas condensation.
• TACO 102-207 LWCO LOW WATER CUTOFF INSTRUCTIONS [PDF] Foam Compensating Low Water Cutoff with Test Button & DualVision™ (2009)
• TACO 102-350 LWCO LOW WATER CUTOFF INSTRUCTIONS [PDF]
• TACO 1900E ECM HIGH EFFICIENCY CIRCULATOR MANUAL [PDF] including the Taco 1915E circulator pump; Excerpt:
  
  This manual is broken down into two sections and describes the installation, operation and control module for Taco 1900e series pumps. Section 1 describes the installation and operation features. Section 2 describes the Taco 1915E control module and its functions. The 1900E series Error Codes are shown below.
  
  [Click to enlarge any image]
  
  
• TACO 0015e3 ECM HIGH EFFICIENCY CIRCULATOR INSTRUCTION SHEET [PDF] (2017)
  
  
• TACO ZVC403 ZONE VALVE CONTROL WIRING & MANUAL [PDF] (2013) # 102-391 retrieved 2017/12/10 original source: http://www.taco-hvac.com/uploads/FileLibrary/102-391.pdf
  The light codes and zone priority for this controller are excerpted below:
  
  Operation/External Diagnostics: When any thermostat calls for heat, the appropriate zone valve is energized and the yellow light goes on. When the zone valve is fully open, the red light goes on and energizes the end switch relay. The green light should always be on, indicating that power is connected.
  
  Priority Operation: When zone 3 is switched to the priority setting and is actuated, all other zones will stop operation until zone 3 is satisfied. When zone 3 is not switched to priority, all zones will operate independently. Note: When a circulator is used on the priority zone instead of a zone valve, jumper 3 and 4 of the priority zone.
• TACO ZVC403 ZONE VALVE CONTROL WIRING & MANUAL [PDF] (2006) # 102-089 retrieved 2017/12/10 original source: http://www.taco-hvac.com/uploads/FileLibrary/102-089.pdf|
  The light codes for this controller are given herein:
  
  Operation/External Diagnostics: When any thermostat calls for heat, the appropriate zone valve is energized and the yellow light goes on. When the zone valve is fully open, the red light goes on and energizes the end switch relay. The green light should always be on, indicating that power is connected.
• TACO® ZVC406-EXP-4 ZONE VALVE CONTROL INSTRUCTIONS - [PDF] (2013)
• TACO 417 AIR VENT [PDF] retrieved 2017/07/15, original source: http://www.taco-hvac.com/uploads/FileLibrary/102-364.pdf

• TACO SR503-4 SWITCHING RELAY INSTALLATION INSTRUCTIONS [PDF] (2010) and wiring diagrams
  Excerpt:
  When any thermostat calls for heat, the appropriate circulator is energized and the isolated end switch (X and X) will start the boiler.
• TACO 560 Series Heat Motor ZONE VALVE 3-WAY-BYPASS INSTRUCTIONS [PDF] (1999) fan coil or terminal heating unit control, zone valve poer head replacement for Models 555-573 & 5101, retrieved 2017/07/15, original source: http://www.taco-hvac.com/uploads/FileLibrary/102-076.pdf
• TACO 5000 Series RADIANT HEAT MIXING VALVE INSTRUCTIONS [PDF] (2016), 85 to 176 °F (29 – 80 °C) retrieved 2017/07/15, original source: http://www.taco-hvac.com/uploads/FileLibrary/102-489.pdf
• TACO 5121 MIXING VALVE (anti-scald valve) INSTRUCTIONS [PDF] (2016), listed for ASSE 1070 applications, scald protection, retrieved 2017/07/15
• TACO AIR SCOOP® air separator / air eliminator, [PDF] retrieved 2017/07/15, original source:http://www.taco-hvac.com/uploads/FileLibrary/100-7.2.pdf
• TACO® Comfort Solutions™ LTA-2 LOW WATER CUTOFF for HOT WATER BOILERS [PDF] (2009), retrieved 2017/08/17, original source: http://www.taco-hvac.com/uploads/FileLibrary/102-350.pdf
• TACO LF-Series Foam Compensating LOW WATER CUTOFF with Test Button & Dual Vision [PDF] (2009) retrieved 2017/04/06, original source: http://www.taco-hvac.com/uploads/FileLibrary/102-207.pdf
  The probe of this device is installed "above" the manufacturer's minimum safe water level.
• TACO LN-Series LWCO Instruction Sheet [PDF], op. cit. Low Water Cutoff
• TACO LOADMATCH CARTRIDGE CIRCULTORS INSTRUCTION SHEET [PDF], retrieved 2017/07/15, original source: http://www.taco-hvac.com/uploads/FileLibrary/102-115.pdf
• TACO LT-Series LWCO Instruction Sheet [PDF], op. cit. Low Water Cutoff
• TACO LTR-Series LWCO Instructions [PDF] Low Water Cutoff Control
• TACO RADIANT HEAT MIXING VALVE INSTRUCTIONS [PDF]
• TACO RADIANT HEAT IFC CARTRIDGE CIRCULATORS w FLOW CHECK INSTRUCTION SHEET [PDF] retrieved 2017/07/15, original source: http://www.taco-hvac.com/uploads/FileLibrary/102-135.pdf
• TACO RMB RADIANT MIXING BLOCK INSTRUCTION MANUAL [PDF] (2015) for radiant heat system control
• TACO SR502 SWITCHING RELAY INSTALLATION INSTRUCTIONS [PDF] retrieved 2018/02/03 original source: http://www.taco-hvac.com/uploads/FileLibrary/SR502%28102-082%29.pdf
• TACO SR503-4 SWITCHING RELAY INSTALLATION INSTRUCTIONS [PDF] (2010) and wiring diagrams
• TACO VARIABLE SPEED OUTDOOR RESET 00-VR CIRCULATOR INSTRUCTIONSHEET [PDF] (2010) retrieved 2017/07/15, original source: http://www.taco-hvac.com/uploads/FileLibrary/102-141.pdf
• TACO VorTech® AIR SEPARATOR INSTRUCTION SHEET [PDF] (2005), retrieved 2017/07/15, original source: http://www.taco-hvac.com/uploads/FileLibrary/102-071.pdf
• TACO WATER CIRCULATION PUMPS & CIRCULATORS - CATALOG [PDF]
• TACO® ZONE VALVE INSTALLATION INSTRUCTIONS [PDF] Models 555-573 (1983) Heat Motor Zone Valves,Models 555, 556, 557-1, 560, 561, 562-1, 571, 572-1, 573-1 zone valves, retrieved 2017/07/15, original source: http://www.taco-hvac.com/uploads/FileLibrary/102-076.pdf
• TACO® ZONE VALVE POWER HEAD REPLACEMENT INSTRUCTIONS [PDF] Models 555-573 & 5101 (1996) retrieved 2017/07/15, original source: http://www.taco-hvac.com/uploads/FileLibrary/102-076.pdf
• TACO ZONE SENTRY VALVE WIRING & INSTALLATION - [PDF] (2014), product specifications, installation instructions]
• TACO ZVC403 ZONE VALVE CONTROL [PDF] (2010) & ZVC403-ZVC406 Zone Control Wiring conected with system pump, wiring & installation instructions.
• TACO ZVC404 ZONE VALVE CONTEROL INSTRUCTION SHEET [PDF] (2006) retrieved 2012/01/25 original source: http://www.taco-hvac.com/uploads/FileLibrary/102-090.pdf
• TACO ZVC406-EXP-4 ZONE VALVE CONTROL INSTRUCTIONS - [PDF] (2013) and wiring diagram
• TACO Multi-Volt ZONE SENTRY ZONE VALVE INSTRUCTIONS [PDF] (2016) for HVAC fan coil units, air handlers, line voltage zone valve, retrieved 2017/07/15

 

• TACO ESP Zone Valve WIRING DIAGRAMS [PDF] (2002)
• TACO® ZONE VALVE INSTALLATION INSTRUCTIONS [PDF] Models 555-573 (1983) Heat Motor Zone Valves,Models 555, 556, 557-1, 560, 561, 562-1, 571, 572-1, 573-1 zone valves, retrieved 2017/07/15, original source: http://www.taco-hvac.com/uploads/FileLibrary/102-076.pdf
• TACO® ZONE VALVE POWER HEAD REPLACEMENT INSTRUCTIONS [PDF] Models 555-573 & 5101 (1996) retrieved 2017/07/15, original source: http://www.taco-hvac.com/uploads/FileLibrary/102-076.pdf
• TACO ZONE SENTRY VALVE WIRING & INSTALLATION - [PDF, product specifications, installation instructions]
• TACO Multi-Volt ZONE SENTRY ZONE VALVE INSTRUCTIONS [PDF] (2016) for HVAC fan coil units, air handlers, line voltage zone valve, retrieved 2017/07/15

Above: wiring example for the Taco SR502 two-zone switching relay. See the SR502 instructions for important details and safety warnings. [Click to enlarge any image]

• TACO SR502 SWITCHING RELAY INSTALLATION INSTRUCTIONS [PDF] retrieved 2018/02/03 original source: http://www.taco-hvac.com/uploads/FileLibrary/SR502%28102-082%29.pdf

Above: wiring example for the Taco SR503 three-zone switching relay. See the SR503 instructions for important details and safety warnings. [Click to enlarge any illustration]

• TACO SR503-4 SWITCHING RELAY INSTALLATION INSTRUCTIONS [PDF] (2010) and wiring diagrams
  
  Watch out: take care about which zone is connected to which zone terminal in this control and to how you specify the priority setting switch for that zone. That feature is intended to permit giving heating priority to a domestic hot water source.
  
  Priority Operation: When zone 3 is switched to the priority setting and is actuated, all other zones will stop operation until zone 3 is satisfied. When zone 3 is not switched to priority, all zones will operate
  independently.
• TACO SR504 ZONE CONTROL MANUAL [PDF] (2013) Switching Relay Instructions

• TACO ZVC403 ZONE VALVE CONTROL [PDF] (2010) & ZVC403-ZVC406 Zone Control Wiring connected with system pump, wiring & installation instructions.
  
  This controller permits setting zone 3 to a priority setting that stops other zones for up to one hour (such as to assure providing domestic hot water in an indirect-fired water heater).
  
  Excerpt explains the LED light codes for this zone controller:
  
  When any thermostat calls for heat, the appropriate zone valve is energized and the yellow light goes on.
  
  When the zone valve is fully open, the red light goes on and energizes the end switch relay.
  
  The green light should always be on, indicating that power is connected.
• TACO ZVC406-EXP-4 ZONE VALVE CONTROL INSTRUCTIONS - [PDF] (2013) and wiring diagram

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