Siemens Building Technology S55180-A158 Actuator
The Siemens Building Technology S55180-A158 (Model SSF161.05U) is a high-precision proportional electronic actuator designed for seamless integration with 599 Series zone valves. Engineered for performance in VAV systems, fan coil units, and chilled ceiling applications, this 24Vac/dc actuator utilizes a 0-10 Vdc positioning signal to provide linear control with a 1/10-inch (2.5 mm) stroke. As a non-spring return (NSR), fail-in-place unit, it maintains its last position upon power loss, ensuring system stability in critical HVAC circuits. The normally open (NO) configuration and 45 lbf (200 N) positioning force allow for reliable operation of 2-way and 3-way valves without the need for complex mounting tools. Technicians will appreciate the self-calibrating feature that automatically adjusts to the valve stroke, alongside a manual override capability using a 3mm hex wrench. The compact NEMA 1 enclosure includes a tri-color LED visual position indicator for rapid diagnostic feedback and status monitoring during routine maintenance.
Key Benefits- Precision Modulation: Employs a 0-10 Vdc control signal for accurate fluid flow regulation in hydronic systems.
- Tool-Free Installation: Direct-coupled design with a universal bonnet nut allows for fast, hand-tightened mounting on Siemens 599 Series valves.
- Intelligent Calibration: Automatic self-calibration ensures the actuator stroke perfectly matches the valve's mechanical limits.
- Contractor Friendly: Features a manual override and clear LED motion indication to simplify commissioning and troubleshooting.
- Parallel Operation: Efficient 2.5 VA power consumption supports the parallel wiring of multiple units from a single controller output.
Is the S55180-A158 a fail-safe actuator?
No, this is a non-spring return (NSR) actuator. In the event of a power failure, the unit will fail-in-place rather than returning to a pre-set safety position.
Which valve bodies are compatible with this actuator?
It is specifically designed for Siemens 599 Series zone valves, including both 2-way and 3-way diverting configurations with a 2.5 mm stroke.
What does the LED indicator signify?
The LED provides real-time feedback: flashing green indicates modulation or calibration, constant green shows the actuator stem position, and a red light signals a calibration error or mechanical stall.
This item is not eligible for free shipping.
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: $153.53
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Description
The Siemens Building Technology S55180-A158 (Model SSF161.05U) is a high-precision proportional electronic actuator designed for seamless integration with 599 Series zone valves. Engineered for performance in VAV systems, fan coil units, and chilled ceiling applications, this 24Vac/dc actuator utilizes a 0-10 Vdc positioning signal to provide linear control with a 1/10-inch (2.5 mm) stroke. As a non-spring return (NSR), fail-in-place unit, it maintains its last position upon power loss, ensuring system stability in critical HVAC circuits. The normally open (NO) configuration and 45 lbf (200 N) positioning force allow for reliable operation of 2-way and 3-way valves without the need for complex mounting tools. Technicians will appreciate the self-calibrating feature that automatically adjusts to the valve stroke, alongside a manual override capability using a 3mm hex wrench. The compact NEMA 1 enclosure includes a tri-color LED visual position indicator for rapid diagnostic feedback and status monitoring during routine maintenance.
Key Benefits- Precision Modulation: Employs a 0-10 Vdc control signal for accurate fluid flow regulation in hydronic systems.
- Tool-Free Installation: Direct-coupled design with a universal bonnet nut allows for fast, hand-tightened mounting on Siemens 599 Series valves.
- Intelligent Calibration: Automatic self-calibration ensures the actuator stroke perfectly matches the valve's mechanical limits.
- Contractor Friendly: Features a manual override and clear LED motion indication to simplify commissioning and troubleshooting.
- Parallel Operation: Efficient 2.5 VA power consumption supports the parallel wiring of multiple units from a single controller output.
Is the S55180-A158 a fail-safe actuator?
No, this is a non-spring return (NSR) actuator. In the event of a power failure, the unit will fail-in-place rather than returning to a pre-set safety position.
Which valve bodies are compatible with this actuator?
It is specifically designed for Siemens 599 Series zone valves, including both 2-way and 3-way diverting configurations with a 2.5 mm stroke.
What does the LED indicator signify?
The LED provides real-time feedback: flashing green indicates modulation or calibration, constant green shows the actuator stem position, and a red light signals a calibration error or mechanical stall.
This item is not eligible for free shipping.
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.
