ODF (Over Desired Fitting) means the valve is designed to slide over a 1 3/8" copper line for a standard sweat/braze connection

This unit is built for durability in high-cycle environments

This brass gas orifice features a standard #42 drill size

Optimized Switching: Replaces the AZ2280-1A-24A with improved contact materials to reduce arcing and extend component life

Nordyne 921498 Control Board 322838-752 ODF (Over Desired Fitting) meansThe Nordyne 921498 Control Board is a critical OEM replacement component engineered for high performance management of modulating furnace systems and packaged units. Specifically designed for the G7 series furnace, this integrated furnace control manages critical sequencing including induction, ignition timing, and blower motor speed regulation. It features a 24 VAC control circuit protected by an onboard 3A fuse to prevent damage from low voltage