Resideo VU843A1004 Actuator
The Resideo VU843A1004 is a professional-grade fan coil actuator engineered for reliable service in high-rise residential and commercial hydronic systems. Operating on a 24Vac power supply, this two-position replacement actuator utilizes a 2-wire SPST control signal to manage flow through normally closed VU53 series valve bodies. The unit features a robust spring return mechanism, ensuring a fail-safe close in the event of power loss. With a precise 22-degree stroke, the actuator achieves a 15-second opening time and a rapid 6-second spring return timing. This allows for tight control over terminal unit temperatures while preventing water hammer. The stainless steel case and aluminum cover provide superior protection against condensation and mechanical wear in tight mechanical closets. Installation is streamlined via a 6-inch electrical connection, making it a standard choice for technicians maintaining older Honeywell or newer Resideo-branded fan coil assemblies.
Key Benefits for Contractors
- Direct Compatibility: Designed specifically for seamless integration with VU53 series 2-way valve bodies.
- Mechanical Durability: Constructed with a stainless steel case to resist corrosion in humid environments.
- Fail-Safe Operation: Reliable 6-second spring return ensures the valve returns to the closed position during power interruptions.
- Optimized Cycle Timing: Balanced 15-second opening stroke provides efficient flow modulation for HVAC terminal units.
- Compact Footprint: Low-profile design allows for easier replacement in cramped ceiling plenums and fan coil cabinets.
Common Questions
Is the Resideo VU843A1004 compatible with 3-way valve bodies?
No, this specific model is optimized for 2-way normally closed VU53 series valves. For 3-way applications, verify the stroke and return requirements of the specific valve body before installation.
What is the primary difference between the VU843 and VU443 series?
The VU843 series is a low-voltage 24V fan coil actuator typically used in systems with centralized transformers, whereas the VU443 series operates on line voltage (120V). Always confirm your control circuit voltage before wiring.
Can the motor be replaced without draining the hydronic system?
Yes, the actuator head can be removed from the VU53 valve body without breaking the plumbing seal, allowing for rapid service and reduced downtime for the occupant.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Original: $83.89
-65%$83.89
$29.36Resideo VU843A1004 Actuator
The Resideo VU843A1004 is a professional-grade fan coil actuator engineered for reliable service in high-rise residential and commercial hydronic systems. Operating on a 24Vac power supply, this two-position replacement actuator utilizes a 2-wire SPST control signal to manage flow through normally closed VU53 series valve bodies. The unit features a robust spring return mechanism, ensuring a fail-safe close in the event of power loss. With a precise 22-degree stroke, the actuator achieves a 15-second opening time and a rapid 6-second spring return timing. This allows for tight control over terminal unit temperatures while preventing water hammer. The stainless steel case and aluminum cover provide superior protection against condensation and mechanical wear in tight mechanical closets. Installation is streamlined via a 6-inch electrical connection, making it a standard choice for technicians maintaining older Honeywell or newer Resideo-branded fan coil assemblies.
Key Benefits for Contractors
- Direct Compatibility: Designed specifically for seamless integration with VU53 series 2-way valve bodies.
- Mechanical Durability: Constructed with a stainless steel case to resist corrosion in humid environments.
- Fail-Safe Operation: Reliable 6-second spring return ensures the valve returns to the closed position during power interruptions.
- Optimized Cycle Timing: Balanced 15-second opening stroke provides efficient flow modulation for HVAC terminal units.
- Compact Footprint: Low-profile design allows for easier replacement in cramped ceiling plenums and fan coil cabinets.
Common Questions
Is the Resideo VU843A1004 compatible with 3-way valve bodies?
No, this specific model is optimized for 2-way normally closed VU53 series valves. For 3-way applications, verify the stroke and return requirements of the specific valve body before installation.
What is the primary difference between the VU843 and VU443 series?
The VU843 series is a low-voltage 24V fan coil actuator typically used in systems with centralized transformers, whereas the VU443 series operates on line voltage (120V). Always confirm your control circuit voltage before wiring.
Can the motor be replaced without draining the hydronic system?
Yes, the actuator head can be removed from the VU53 valve body without breaking the plumbing seal, allowing for rapid service and reduced downtime for the occupant.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Product Information
Product Information
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Description
The Resideo VU843A1004 is a professional-grade fan coil actuator engineered for reliable service in high-rise residential and commercial hydronic systems. Operating on a 24Vac power supply, this two-position replacement actuator utilizes a 2-wire SPST control signal to manage flow through normally closed VU53 series valve bodies. The unit features a robust spring return mechanism, ensuring a fail-safe close in the event of power loss. With a precise 22-degree stroke, the actuator achieves a 15-second opening time and a rapid 6-second spring return timing. This allows for tight control over terminal unit temperatures while preventing water hammer. The stainless steel case and aluminum cover provide superior protection against condensation and mechanical wear in tight mechanical closets. Installation is streamlined via a 6-inch electrical connection, making it a standard choice for technicians maintaining older Honeywell or newer Resideo-branded fan coil assemblies.
Key Benefits for Contractors
- Direct Compatibility: Designed specifically for seamless integration with VU53 series 2-way valve bodies.
- Mechanical Durability: Constructed with a stainless steel case to resist corrosion in humid environments.
- Fail-Safe Operation: Reliable 6-second spring return ensures the valve returns to the closed position during power interruptions.
- Optimized Cycle Timing: Balanced 15-second opening stroke provides efficient flow modulation for HVAC terminal units.
- Compact Footprint: Low-profile design allows for easier replacement in cramped ceiling plenums and fan coil cabinets.
Common Questions
Is the Resideo VU843A1004 compatible with 3-way valve bodies?
No, this specific model is optimized for 2-way normally closed VU53 series valves. For 3-way applications, verify the stroke and return requirements of the specific valve body before installation.
What is the primary difference between the VU843 and VU443 series?
The VU843 series is a low-voltage 24V fan coil actuator typically used in systems with centralized transformers, whereas the VU443 series operates on line voltage (120V). Always confirm your control circuit voltage before wiring.
Can the motor be replaced without draining the hydronic system?
Yes, the actuator head can be removed from the VU53 valve body without breaking the plumbing seal, allowing for rapid service and reduced downtime for the occupant.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
