this is a standard 2-wire 24V 2-position damper

Universal Compatibility: Fully interchangeable with the ST1000 series for streamlined stock management and field repair

Color-Coded Ports: Simplifies installation with clear identification of positive and negative pressure inlets to prevent vacuum/pressure plumbing errors

this unit serves as the direct replacement for H91BG-2

the kit is designed for field installation and includes the necessary hardware to integrate the control into the existing burner circuit

Schneider Electric (Barber Colman) 2218-132 Thermostat Freon this is a standard 2-wireThe Schneider Electric 2218 132 pneumatic thermostat is a dual purpose, two pipe room thermostat designed for dual temperature control in complex HVAC systems. This summer winter thermostat provides seamless switching between heating and cooling modes by responding to changes in main air pressure. Engineered for precision, it features reverse acting and direct acting capabilities, ensuring reliable setpoint maintenance in commercial environments. As a