Supco slf255-va Rollout Limit Switch Flush Mount Vertical

Product Description

The SUPCO slf255-va is a rollout limit switch designed for use in gas furnace and heating appliance applications where flame rollout detection is required. This small, flush-mount switch features a vertical orientation with a 0.25-inch mounting configuration and is factory-set to open at 255 degrees F, with an auto-reset point of 205 degrees F. When abnormal flame rollout or excessive heat is detected, the switch interrupts the control circuit, shutting down the burner to prevent equipment damage and fire hazard. Licensed HVAC technicians and gas heating service professionals install and replace this component during routine maintenance and safety inspections.

This rollout limit switch is suited for residential gas furnaces and similar forced-air heating equipment where a small, flush-mount safety switch is required. It installs in the burner compartment area, typically near the heat exchanger or burner assembly, where it can detect flame rollout events. The vertical mounting style and compact form factor make it appropriate for applications with limited clearance around the burner box. Service technicians replacing failed or nuisance-tripping rollout switches will find this a direct-style replacement in compatible small flush-mount applications.

Key Features

• Opens at 255 degrees F to interrupt burner circuit on flame rollout detection
• Resets at 205 degrees F for automatic recovery after thermal event resolves
• Small flush-mount body with vertical orientation for tight installation spaces
• 0.25-inch mounting configuration for secure panel or bracket attachment
• Designed as a safety limit device to protect equipment and prevent fire hazard

Compatibility

Designed as an OEM-style replacement rollout limit switch for residential gas furnaces and heating appliances requiring a small flush-mount vertical-style safety switch with a 255 degrees F trip point.

Installation Notes

Rollout limit switches are installed by licensed HVAC technicians in accordance with local mechanical codes and manufacturer service procedures. Always shut off gas supply and disconnect electrical power to the furnace before servicing the burner compartment or replacing any limit switch. Inspect the burner assembly and heat exchanger for signs of rollout or restriction before installing the replacement switch, as a failed rollout switch may indicate an underlying combustion problem. Verify the replacement switch trip temperature and mounting style match the original component before completing the repair.

Technical Specifications

• Trip Temperature: 255 degrees F
• Reset Temperature: 205 degrees F
• Mount Type: Flush Mount
• Orientation: Vertical
• Mounting Size: 0.25 inches

Standard Information

• Brand: SUPCO
• Manufacturer Part Number: slf255-va