Laars 2400-110 Stack Switch for 9600 Series Boiler Blower and Fan

The Laars 2400-110 is a genuine OEM stack switch designed specifically for the Laars 9600 Series boiler, including the 9600 CB (condensing boiler) and 9600 HWG models. The stack switch is a critical safety and control component that monitors the exhaust flue and coordinates blower and fan operation to ensure proper combustion sequencing and safe burner ignition.

Key Features:

• Genuine Laars OEM replacement part (MPN: 2400-110)
• Designed for the Laars 9600 CB, HWG, HWG-M2, and CB-M2 series boilers
• Controls and monitors the exhaust stack in coordination with the blower and fan assembly
• Essential safety component ensuring proper flue draft before and during burner operation
• Direct drop-in replacement for worn or failed original equipment
• Also referenced as Teledyne Laars 2400-110

Replacing a faulty stack switch restores proper ignition sequencing and prevents unsafe boiler operation. This is a direct OEM replacement part sourced from Laars Heating Systems, ensuring compatibility and reliable performance in the 9600 series boiler lineup.