Combination gas control for use in 24 Vac gas-fired, standing pilot appliances with capacities from 30 to 300 cfh.
Control includes safety shutoff, manual valve, two automatic operators, pressure regulator and pilot adjustment.
Compact size.
Provides two automatic valves.
Solenoid operated first automatic valve opens on thermostat call for heat, closes when call for heat ends.
Diaphragm-operated second automatic valve opens under control of regulator; closes if gas or power supply is interrupted.
Meets codes requiring dual safety shut-off.
Natural to LP and LP to Natural conversion kits available for standard and slow opening gas valves.
All adjustments, wiring connections and pilot outlet are accessible from top of control.
Adjustable servo regulator effectively maintains almost constant gas output pressure under wide fluctuations in gas supply pressure.
Compatible with ECO connector.
LITE-RITE (OFF-PILOT-ON) lighting sequence.
Combination gas control for use in 24 Vac gas-fired, standing pilot appliances with capacities from 30 to 300 cfh.
Control includes safety shutoff, manual valve, two automatic operators, pressure regulator and pilot adjustment.
Compact size.
Provides two automatic valves.
Solenoid operated first automatic valve opens on thermostat call for heat, closes when call for heat ends.
Diaphragm-operated second automatic valve opens under control of regulator; closes if gas or power supply is interrupted.
Meets codes requiring dual safety shut-off.
Natural to LP and LP to Natural conversion kits available for standard and slow opening gas valves.
All adjustments, wiring connections and pilot outlet are accessible from top of control.
Adjustable servo regulator effectively maintains almost constant gas output pressure under wide fluctuations in gas supply pressure.
Compatible with ECO connector.
LITE-RITE (OFF-PILOT-ON) lighting sequence.
Combination gas control for use in 24 Vac gas-fired, standing pilot appliances with capacities from 30 to 300 cfh.
Control includes safety shutoff, manual valve, two automatic operators, pressure regulator and pilot adjustment.
Compact size.
Provides two automatic valves.
Solenoid operated first automatic valve opens on thermostat call for heat, closes when call for heat ends.
Diaphragm-operated second automatic valve opens under control of regulator; closes if gas or power supply is interrupted.
Meets codes requiring dual safety shut-off.
Natural to LP and LP to Natural conversion kits available for standard and slow opening gas valves.
All adjustments, wiring connections and pilot outlet are accessible from top of control.
Adjustable servo regulator effectively maintains almost constant gas output pressure under wide fluctuations in gas supply pressure.
Compatible with ECO connector.
LITE-RITE (OFF-PILOT-ON) lighting sequence.
Taco Zone Valve Controls are designed to operate two-, three-, or four-wire zone valves and provide reliable, protected system management. Each control is fully fuse-protected and includes two isolated end switches along with an integrated priority switch for added system flexibility.
The contractor-friendly circuit board layout helps prevent wiring errors and avoids the cluttered appearance often associated with traditional zone valve setups. Durable screw terminals ensure secure connections, while external LED indicator lights allow for quick diagnostics—helping to speed up installation and troubleshooting.
All Taco Zone Valve Controls are 100% factory tested, UL and CSA certified, and backed by an extended 3-year warranty for long-term peace of mind.
For optimal performance and system reliability, these controls are intended for use with Taco Zone Valves and compatible thermostats.
External LED indicator lights for fast diagnostics
Selectable priority switching
Simplified, error-reducing wiring layout
Compatible with 2-, 3-, or 4-wire 24V zone valves
Compact, space-saving design
Fuse-protected operation
Two isolated end switches
Additional set of dry contacts
Contractor-oriented PC board design
Works with all standard thermostats
UL and CSA certified
Heavy-duty screw terminal connections
Extended 3-year manufacturer warranty
The Taco SR506 is a robust six-zone switching relay built for larger hydronic heating systems. Featuring simplified wiring, LED status indicators, and heavy-duty construction, it provides reliable control of multiple zones with ease. Ideal for larger residential or light commercial applications, the SR506 offers dependable performance contractors trust.
The Taco SR504 delivers reliable four-zone control for hydronic heating systems. Designed with installer-friendly wiring, diagnostic LED lights, and durable components, it ensures dependable operation of multiple circulators or zone valves. The SR504 is a trusted solution for residential and light commercial systems requiring expanded zone management.
The Taco SR501 is a dependable single-zone switching relay designed for hydronic heating systems. It offers simple wiring, built-in diagnostic LED indicators, and durable construction for reliable control of circulators or zone valves. Ideal for both residential and light commercial applications, the SR501 delivers straightforward operation and long-lasting performance trusted by contractors.
The Taco SR503 is a dependable three-zone switching relay designed for hydronic heating systems. It offers straightforward wiring, built-in LED indicators for easy diagnostics, and rugged construction for reliable control of multiple circulators or zone valves. Ideal for residential and light commercial applications, the SR503 provides efficient and trusted multi-zone control.
The Taco SR502 is a reliable two-zone switching relay designed for hydronic heating systems. It features simple wiring, built-in LED indicators for quick diagnostics, and durable construction for dependable control of multiple circulators or zone valves. Ideal for residential and light commercial applications, the SR502 delivers efficient, straightforward zone management trusted by contractors.
