Smart Thermostats & Climate Controllers
Taco Comfort Solutions Next Generation 4-Zone Valve Control with Boiler Reset
Exact model ZVC404-R-5
Also identified as: ZVC404-R-5, Next Generation 4-Zone Valve Control with Boiler Reset, Taco Comfort Solutions ZVC404-R-5, ZVC404-R-5 Next Generation 4-Zone Valve Control with Boiler Reset
Taco Comfort Solutions ZVC404-R-5 is the Next Generation 4-Zone Valve Control with Boiler Reset, four-zone valve control with integrated boiler-reset hardware and logic. This exact-model guide covers published configuration, installation boundaries, operation, service, and power.
- Taco Comfort Solutions identifies ZVC404-R-5 as Next Generation 4-Zone Valve Control with Boiler Reset.
- Four-zone valve control with integrated boiler-reset hardware and logic.
- Taco's current official catalog identifies exact model ZVC404-R-5, its distinct zone/reset configuration, Bluetooth control generation, hinged cover, and enclosure dimensions of 12.5 x 8.5 x 2.625 inches.
- Taco Control mobile app for Bluetooth commissioning, diagnostics, and firmware updates.
- Compatible Taco two-, three-, or four-wire zone valves selected by application.
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Information checked August 28, 2026. Confirm critical specifications with the manufacturer.
Official resources
Manuals and official support
Replacement parts and accessories
Products for Taco Comfort Solutions ZVC404-R-5
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Cables & connections
Accessory
Honeywell Home TH1100DV1000 Pro 1000 Heat-Only Thermostat
Honeywell Home TH1100DV1000 Pro 1000 Heat-Only Thermostat is a documented-interface accessory option for Taco Comfort Solutions ZVC404-R-5. Use only for a supported heat-only zone and follow the exact thermostat and end-switch sequence in the controller diagram.
Listing reviewed 2026-08-28
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Honeywell Home T87K1007 Round Heat-Only Thermostat
Honeywell Home T87K1007 Round Heat-Only Thermostat is a documented-interface accessory option for Taco Comfort Solutions ZVC404-R-5. Use only for a supported two-wire heat call; confirm the exact control method and conductor routing.
Listing reviewed 2026-08-28
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Honeywell Home RTH5160D1003 Non-Programmable Thermostat
Honeywell Home RTH5160D1003 Non-Programmable Thermostat is a documented-interface accessory option for Taco Comfort Solutions ZVC404-R-5. Configure only the heating functions supported by the zone-valve controller and the connected HVAC equipment.
Listing reviewed 2026-08-28
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Cable
Southwire 64162122 18/2 Thermostat Wire, 50 ft
Southwire 64162122 18/2 Thermostat Wire, 50 ft is a documented-interface accessory option for Taco Comfort Solutions ZVC404-R-5. Use only where two conductors meet the exact terminal, length, jacket, temperature, and code requirements.
Listing reviewed 2026-08-28
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Cableague 18/5 Thermostat Wire, 50 ft
Cableague 18/5 Thermostat Wire, 50 ft is a documented-interface accessory option for Taco Comfort Solutions ZVC404-R-5. Use only for circuits needing the conductor count; follow every thermostat, motor, and end-switch terminal assignment.
Listing reviewed 2026-08-28
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Taco 571-2 3/4-Inch Sweat Zone Valve
Taco 571-2 3/4-Inch Sweat Zone Valve is a documented-interface accessory option for Taco Comfort Solutions ZVC404-R-5. Use only for a 3/4-inch sweat hydronic branch whose valve action, flow, close-off pressure, and VA load are verified.
Listing reviewed 2026-08-28
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WIRELEL V8043E1012-Compatible 3/4-Inch 24 V Zone Valve
WIRELEL V8043E1012-Compatible 3/4-Inch 24 V Zone Valve is a documented-interface accessory option for Taco Comfort Solutions ZVC404-R-5. Use only after matching the exact valve body, pipe connection, flow direction, close-off pressure, terminal function, and listing.
Listing reviewed 2026-08-28
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Accessory
Accessory
Taco 555-050RP Zone Valve Power Head
Taco 555-050RP Zone Valve Power Head is a documented-interface accessory option for Taco Comfort Solutions ZVC404-R-5. Use only as the power head for an explicitly compatible installed Taco body; it is not a complete valve replacement.
Listing reviewed 2026-08-28
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Additional useful information
Use this exact-model guide for Taco Comfort Solutions ZVC404-R-5 to confirm the published configuration, follow the proper installation and commissioning path, operate the controller safely, isolate common faults, and match power, wiring, sensors, readers, valves, relays, credentials, or expansion hardware without borrowing unsupported assumptions from a nearby model.
Taco Comfort Solutions ZVC404-R-5 is the exact Next Generation 4-Zone Valve Control with Boiler Reset covered here. Four-zone valve control with integrated boiler-reset hardware and logic. Taco's current official catalog identifies exact model ZVC404-R-5, its distinct zone/reset configuration, Bluetooth control generation, hinged cover, and enclosure dimensions of 12.5 x 8.5 x 2.625 inches.
Published exact-model boundaries: Compatible Taco two-, three-, or four-wire zone valves selected by application. Official ZVC installation, Modbus, pump-end-switch, post-purge, and reset guides.
Setup, operation, and fault isolation: ZVC404-R-5 adds boiler reset to a four-zone valve system. Document outdoor sensor placement and reset settings separately from valve and end-switch commissioning. A valid heat call with a reduced boiler target may reflect outdoor-reset control, while a valve that fails to prove open remains a field-actuator problem.
A four-zone reset installation is well suited to a seasonal baseline: record outdoor reading, target temperature, active valve count, supply temperature, and return temperature during one stable call. That snapshot helps separate envelope changes, hydraulic imbalance, reset configuration, and actuator faults at the next visit.
Power and service boundary for ZVC404-R-5: Taco Comfort Solutions ZVC404-R-5 is an installer-wired hydronic control with line-voltage field conductors entering the fixed case and an internal low-voltage control transformer. There is no detachable consumer supply; disconnect, overcurrent protection, conductor rating, and grounding are installation work.
- Compatible 24 VAC hydronic thermostats and thermostat-wire identification labels.
- Field-replaceable Taco transformer matched to the exact ZVC control.
- Manufacturer-specified replacement fuses, valve relays, and service parts.
- Official ZVC installation, Modbus, pump-end-switch, post-purge, and reset guides.
- Knockout plugs, strain relief, fixed-box mounting hardware, and hinged-cover service guidance.
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