Johnson Controls T-4000-2138 Plastic Cover while the wide operating temperature

while the wide operating temperature range of -30°F to 140°F ensures dependable performance in unconditioned mechanical spaces

ensuring a direct fit without the need for field modifications

or specific span concentrations directly to the sensing element

or an audible humming from the compressor indicating a failure to initiate the start winding

Can I use a 5/16" bore blade instead of the 1/4" bore 68005

Johnson Controls T-4000-2138 Plastic Cover while the wide operating temperatureThe Johnson Controls T 4000 2138 is a professional grade beige plastic thermostat cover designed specifically for T 4000 series pneumatic room thermostats. This field standard component provides a clean, streamlined aesthetic for commercial HVAC systems where tamper resistance and a minimalist profile are required. Engineered for versatility, the T 4000 2138 supports both horizontal and vertical mounting configurations, accommodating various pneumatic