The "/U" suffix denotes a universal technician-ready packaging

Always verify the rotation of your existing fan blade from the lead end to ensure proper airflow direction before installation

this unit features a wide set-point range of 0

a precision-engineered 40VA control transformer designed for reliable stepped-down power distribution

If it blows immediately upon startup

Conbraco 50-GB4-01A Valve R-407C The "/U" suffix denotes aThe Apollo 50 GB4 01A is a commercial grade 3 4" bronze gas shutoff valve engineered for critical main burner applications. Constructed with an ASTM B584 bronze body and a chrome plated brass ball, this 2 piece valve provides the chemical resistance and structural integrity required for natural gas, LP gas, and mixed gas systems. As a full port gas ball valve, it ensures maximum flow capacity with a high rating of 1,258,000 BTU hr at 1" W. C. pressure