Siemens SKP55.011U1 120V dP/dP Air/Gas Ratio Controller with POC

Description

The Siemens SKP55.011U1 is a high-performance combustion actuator and air/gas ratio controller engineered for demanding commercial and industrial burner applications. Operating on 120V, this differential pressure-based (dP/dP) controller maintains precise air-to-gas ratios across the full modulation range, ensuring optimal combustion efficiency, fuel savings, and reduced emissions.

Key Features

• 120V operating voltage for compatibility with standard commercial control circuits
• Differential pressure to differential pressure (dP/dP) air/gas ratio control for accurate fuel-air mixture management
• Proof of Closure (POC) function provides a safety-verified signal confirming valve closure before burner start
• Designed for integration with Siemens SKP series gas valve actuators on modulating burner systems
• Compact, robust construction suitable for commercial and light industrial combustion equipment
• Supports safe, reliable burner sequencing in compliance with combustion safety standards

Application

The SKP55.011U1 is ideal for use on atmospheric and forced-draft gas burners in boilers, water heaters, and process heating equipment where precise air/gas ratio control and safety interlock verification are required. The dP/dP sensing method continuously compares air-side and gas-side differential pressures, automatically adjusting the gas valve actuator to maintain the correct mixture ratio throughout the firing range.

Safety & Compliance

• Proof of Closure (POC) output ensures burner management systems receive a confirmed valve-closed signal
• Engineered to meet rigorous combustion safety requirements for commercial heating applications
• Part of the Siemens SKP55 series — a trusted platform for combustion control worldwide

Specifications

• SKU: SKP55.011U1
• Brand: Siemens
• Supply Voltage: 120V
• Control Method: dP/dP (Differential Pressure / Differential Pressure)
• Function: Air/Gas Ratio Controller
• Safety Feature: Proof of Closure (POC)
• Application: Commercial/Industrial Gas Burners