Allied Air 11g21 Single Enthalpy Control Kit

Product Description

The ALLIED AIR 11g21 is a single enthalpy control kit designed to monitor outdoor air conditions and regulate economizer operation in commercial HVAC systems. Enthalpy control allows a rooftop unit or air handler to determine when outdoor air is suitable for free cooling, reducing mechanical cooling loads. The 11g21 measures both temperature and humidity to calculate enthalpy, enabling accurate changeover decisions. This control kit is installed by licensed HVAC technicians as part of an economizer control strategy in light commercial and commercial rooftop applications.

The 11g21 is suited for commercial rooftop units and air handlers equipped with economizer assemblies. Single enthalpy control monitors outdoor air only, as opposed to differential enthalpy systems that compare both outdoor and return air. This makes it a straightforward upgrade or replacement for existing economizer control setups where only outdoor-air sensing is required. The kit is referenced under manufacturer part number 11g21 and supplier reference C1SNSR60FF1.

Key Features

• Single enthalpy sensing monitors outdoor air temperature and humidity for economizer control
• Enables free-cooling mode when outdoor air conditions are favorable, reducing compressor runtime
• Compatible with economizer-equipped commercial rooftop units and air handlers
• Complete kit format provides the components needed for enthalpy-based changeover control

Compatibility

Designed as an OEM-style replacement single enthalpy control kit for commercial rooftop units and air handlers equipped with economizer systems. Also referenced under supplier designation C1SNSR60FF1.

Installation Notes

Installation should be performed by a licensed HVAC technician familiar with commercial economizer controls. Disconnect and lock out all power to the unit before servicing any control components. Verify wiring connections against the unit wiring diagram before restoring power. Follow applicable local mechanical and electrical codes during installation.

Technical Specifications

• Control Type: Single Enthalpy
• Manufacturer Part Number: 11g21
• Supplier Reference: C1SNSR60FF1

Standard Information

• Brand: ALLIED AIR
• Manufacturer Part Number: 11g21