System Safety: Proper burner alignment supports reliable flame sensing and prevents dangerous roll-out conditions

the board's internal relay or transformer has likely failed

This unit utilizes a copper tube and brass fitting

3-inch diameter motor features Class B insulation

such as the DF090N15B2BAA4 model

Heil Quaker ICP 522559 Rollout Switch 322057-301 System Safety: Proper burner alignmentThe Heil Quaker ICP 522559 Rollout Switch is a critical safety component designed for International Comfort Products (ICP) furnace systems. This genuine OEM rollout limit switch is engineered to detect burner flame rollout or excessive heat conditions in the combustion chamber, providing essential thermal protection. Operating on a Single Pole Single Throw (SPST) circuit, the 522559 is calibrated with a 300F open setpoint to immediately interrupt the