Technicians should look for air hissing from the actuator housing

Check the original part number stamped on the blade or your unit's data plate

Is this a direct replacement for Johnson Controls M9206 units

and crank arm specifically for 1/2-inch damper shafts

Lochinvar & A.O. Smith 100108290 Heating Element Refrigerant Technicians should look for airThe Lochinvar & A. O. Smith 100108290 Heating Element is a heavy duty, 240V 4500W water heater element designed for high efficiency thermal transfer in residential and light commercial applications. This 12 inch copper heating element features a Corrogard zinc plated finish to provide enhanced resistance against corrosive water conditions and sediment buildup. For field service technicians, this unit is a direct OEM replacement part and is technically