The thermostat detects changes in main air pressure

preventing the heating elements from receiving high-voltage power

this unit is the direct factory-authorized upgrade for the obsolete 30RB660036

this valve should be mounted in the vertical position with the discharge piping sloped for gravity drainage

Bard HVAC 8402-148BX Limit Switch 320788-702 The thermostat detects changes inThe Bard HVAC 8402 148BX Limit Switch is a critical safety component designed for high temperature monitoring in Bard wall mount heat pumps and air conditioners. This L325 manual reset limit switch acts as a primary safety cutout, designed to open the electrical circuit when internal plenum temperatures exceed 325F. Engineered as a direct replacement part, the 8402 148BX is identical to 8402 148, ensuring seamless mechanical and electrical