Technicians should check for continuity across the leads when the heater is disconnected or use an ammeter to verify current draw when the compressor is in the off-cycle and the heater is energized

check the igniter for proper ohms

If the shield is physically damaged

Featuring a 9-inch adjustable angle scale

Technicians often reuse existing hardware or source specific replacement gaskets separately depending on the condition of the flue collection box

Dwyer Instruments 2000-00N Pressure Gage 320819-301 Technicians should check for continuityThe Dwyer 2000 00N Magnehelic Differential Pressure Gage is the industry standard for monitoring fan and blower pressure, filter resistance, and furnace draft in precise HVACR environments. This zero center gage features a . 05 0 . 2" w. c. range, making it indispensable for measuring both positive and negative pressures in cleanroom monitoring and low pressure air systems. Engineered with a large 4" diameter dial face, it provides high visibility