Description
The Schneider Electric (Barber Colman) 2211-012 is a pneumatic proportional thermostat engineered for reliable, precise temperature control in commercial and industrial HVAC applications. Designed as a direct-acting, one-pipe device without dial limit stops, it delivers straightforward installation and dependable performance in a wide range of pneumatic control systems.
Product Overview
This proportional thermostat operates on the direct-acting principle, meaning the output air pressure increases as the sensed temperature rises. The one-pipe configuration simplifies field installation by using a single pneumatic supply/branch line, reducing material and labor costs compared to two-pipe systems. The absence of dial limit stops allows full-range setpoint adjustment, giving technicians and building operators maximum flexibility when commissioning or rebalancing a zone.
Key Features
- Direct-acting operation: output pressure increases with rising temperature
- One-pipe pneumatic design for simplified installation and wiring
- No dial limit stops for unrestricted setpoint adjustment across the full range
- Proportional control action for stable, hunting-free temperature regulation
- Durable construction suited for commercial and light industrial environments
- Schneider Electric (Barber Colman) quality and long-term parts support
Applications
- Pneumatic HVAC control systems in commercial buildings
- Fan coil units, unit ventilators, and VAV terminal applications
- Retrofit and replacement of legacy Barber Colman pneumatic thermostats
- Any one-pipe pneumatic zone requiring direct-acting proportional control
Why Choose the 2211-012?
As part of the trusted Schneider Electric / Barber Colman controls lineage, the 2211-012 offers the reliability and compatibility that facilities managers and HVAC contractors have depended on for decades. Its straightforward one-pipe, direct-acting design minimizes installation complexity while delivering accurate proportional control that keeps occupant comfort consistent and energy use optimized.
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