Use the "Test" pins on the circuit board to manually initiate a defrost cycle

Vibration Mitigation: Factory-balanced design protects the fan motor from shaft oscillation

As an essential part of the heat exchanger front cover kit

The Nordyne 904574 Limit Switch is a critical safety component designed for high-limit temperature monitoring within gas-fired furnaces

ensuring the GC Valves KS211AF02V5FG9 holds up under harsh industrial conditions

Lochinvar & A.O. Smith 100208444 Valve Refrigerant Use the "Test" pins onThe Lochinvar & A. O. Smith 100208444 Valve is a technical grade Temperature and Pressure Relief Valve designed for high capacity water heating and boiler systems. As a veteran preferred component, this 3 4" T&P Relief Valve is calibrated to lift at 150 PSI and 210F, providing critical safety by venting excess thermal expansion. It features a 3 inch element and a high efficiency flow rate rated at 1,912,000 BTU hr (1. 912mBTU), making it suitable for