Lennox 10H21 Transformer 321894-708 and SF series

and SF series

The internal heater is critical for outdoor or high-humidity applications to eliminate internal moisture

technicians should verify that the 425 psi high-pressure limit meets the specific safety requirements of high-pressure R-410A systems before installation

Common Questions Is this burner assembly compatible with LP propane units

Technicians should check for continuity across the terminals

Lennox 10H21 Transformer 321894-708 and SF seriesThe Lennox 10H21 Transformer (Model LB 95312G) is a heavy duty, factory authorized step down transformer engineered specifically for high voltage industrial and commercial HVAC applications. Featuring a 575V primary input (rated up to 600VAC at 60Hz) and a 230V secondary output, this 175VA transformer provides the high capacity power regulation required for sophisticated control circuits, contactors, and relays within Lennox equipment. Built for