Markel 56811001 Override Switch 321702-401 A: This is a Natural

A: This is a Natural Gas (NG) burner assembly

000 cycles at maximum rated load

this HVACR valve is suitable for managing flow path configurations in both heating and chilled water systems to regulate terminal unit output

and 1" sizes

Its ±2-1-2% ASME Grade A accuracy and clear aluminum dial provide the precision required for leak detection and vacuum systems

Markel 56811001 Override Switch 321702-401 A: This is a NaturalThe Markel 56811001 Override Switch is a critical field installed component engineered specifically for Markel 5100 Series unit heaters. Designed to provide precise manual oversight, this fan override switch allows contractors to bypass standard automated cycles for summer air circulation or to purge the heater casing of residual heat post shutdown. This replacement HVAC switch is built for the rigors of industrial environments, ensuring the fan motor