Copeland Comfort Control (White Rodgers) 21D28-6 Control System Els PW 17895 Engineered with a 20-foot vapor

Engineered with a 20-foot vapor pressure type copper sensing element

SPST Switching Logic: Reliable Single Pole Single Throw operation for precise combustion safety circuit control

this unit is a staple for HVAC zone control in high-rise buildings and complex pumping systems

Because Lennox is the parent company for Armstrong Air and Ducane

Copeland Comfort Control (White Rodgers) 21D28-6 Control System Els PW 17895 Engineered with a 20-foot vaporThe Copeland Comfort Control (White Rodgers) 21D28 6 Control System is a professional grade solution for managing evaporative cooling systems with precision. As a direct replacement for the legacy 21D28 3, this integrated kit includes the 1F51 619 thermostat and the 8A18Z 2 control box, ensuring seamless field integration. Engineered for multi voltage versatility, the unit features an integral transformer compatible with 120 VAC or 240 VAC primary