Always perform a combustion analysis during installation

and wind-driven debris

Rugged Internal Design: Equipped with a heavy-duty stainless steel spring and Buna-N O-ring for long-term sealing stability up to 180°F

but it is recommended to inspect the existing motor shaft for any burrs before securing the replacement fan blade

For proper performance and to meet ASME code

Johnson Controls A19ADB-33 Utility Thermostat Els PW 17895 Always perform a combustion analysisJohnson Controls A19ADB 33 Utility Thermostat, 120 208 240 Vac, 50 200 Degree Temperature Range, 6' Capillary Length, Open Hi, Remote Bulb, Manual Reset, Enclosed Setpoint Adjustment