White-Rodgers 21M51U-843 Ignition Furnace Control KitWhite Rodgers 21M51U 843 Ignition Furnace Control Kit is a universal, 2 stage, 3 speed control module designed for furnaces. It supports multiple fuel types including natural gas, manufactured gas, mixed fuels, LPG, and liquid propane, delivering reliable ignition across a range of setups. This kit features integrated flame sense, hot surface ignition, and a four trial ignition sequence with a 3 second ignition trial time. It provides a safe 15 second

Designed as an OEM-equivalent replacement

5 A at 480 VAC

5" x 20" electronic air cleaners for precise sizing

1480 RPM inducer motor delivers steady draft and reliable ignition

Applications: furnace

and ISO 9001 approvals

This wall-mount sub-base is compatible with the 7800 Series relay module and the S7830 expanded annunciator

Reznor 110860 Pilot Assembly Kit LP 125-400 is a dependable replacement part for gas appliances

Compatibility: direct-fit replacement for Honeywell 314153 pneumatic valve actuators

8-second flame failure re-ignition

Air Conditioning System

durable insulation