preventing bypass air issues that can diminish AFUE ratings

For outdoor or washdown applications

Using a switch with a different Water Column rating will compromise combustion safety and lead to premature ignition failure or unsafe CO levels

Can I use this switch as a substitute for other L175 limits

Bard HVAC 2151-021 Tool 320074-702 preventing bypass air issues thatFor the seasoned HVACR contractor, the Bard HVAC 2151 021 EEV Manual Adjustment Tool is an indispensable asset for precise system calibration and maintenance. This OEM EEV service tool is engineered to mechanically manipulate Bard electronic expansion valves, a critical function during essential service procedures. When performing refrigerant evacuation, full recovery, or system charging, the EEV typically remains closed without a call for cooling.