Johnson Controls A11B-1 Freezestat 30067439-890 the VTD-1611 provides the mechanical

the VTD-1611 provides the mechanical advantage required for accurate positioning in demanding HVACR building automation environments

Always verify the parts list in the unit service manual

having a factory-original AC remote control replacement is critical for accessing advanced programming functions and diagnostic modes that generic universal remotes often fail to support

and the relay mechanically selects the lower pressure signal for the branch output

Johnson Controls A11B-1 Freezestat 30067439-890 the VTD-1611 provides the mechanicalThe Johnson Controls A11B 1 is a professional grade low temperature cutout control, commonly referred to in the field as a freezestat. Engineered specifically for HVAC systems utilizing chilled water or steam coils, this mechanical temperature control protects against thermal damage by monitoring air duct temperatures. The unit features an SPST switch that opens on a temperature drop, effectively cutting power to the fan or closing dampers when