Lochinvar L100208834 Air Sensor Knightxl Boiler

Product Description

The LOCHINVAR L100208834 is a replacement air sensor designed for use with KnightXL series condensing heating boilers. Air sensors monitor combustion air or flue gas temperature conditions and send signals to the boiler control board, allowing the system to respond to changes in operating conditions. This sensor is a direct OEM-style replacement intended for installation by licensed HVAC technicians or plumbers servicing high-efficiency gas boiler systems. Proper sensor function is critical to accurate control board operation and safe boiler performance.

This air sensor is specified for use with KnightXL KB 400, KB 501, KB 601, KB 701, and KB 801 heating boilers. These are commercial and residential condensing gas boilers commonly found in hydronic heating systems. Technicians servicing any of these five KnightXL model variants should verify this part number against the boiler's service documentation before installation.

Key Features

• OEM-style replacement air sensor for KnightXL condensing heating boilers
• Compatible across five KnightXL boiler models: KB 400, KB 501, KB 601, KB 701, and KB 801
• Supports accurate control board response to air or flue temperature conditions
• Direct replacement reduces downtime during boiler service calls

Compatibility

Designed for use with LOCHINVAR KnightXL KB 400, KB 501, KB 601, KB 701, and KB 801 heating boilers. Verify compatibility against the boiler's service manual and wiring diagram before installation.

Installation Notes

Installation should be performed by a licensed HVAC technician or plumber familiar with high-efficiency condensing boiler systems. Before servicing, shut down the boiler and allow it to cool completely, and disconnect power at the service switch or breaker. Consult the boiler manufacturer's service documentation for sensor location, connector type, and proper seating procedure. Follow all applicable local mechanical codes and manufacturer guidelines.

Technical Specifications

• Compatible Models: KnightXL KB 400, KB 501, KB 601, KB 701, KB 801

Standard Information

• Brand: LOCHINVAR
• Manufacturer Part Number: L100208834