Description
The Armstrong Furnace R101082-01 is an OEM replacement L145-40F high-limit switch engineered to protect Armstrong furnaces from dangerous overheating conditions. This safety control continuously monitors plenum or heat exchanger temperatures and interrupts the burner circuit when temperatures exceed the rated setpoint, preventing equipment damage and potential fire hazards.
How It Works
The limit switch is wired in series with the furnace burner control circuit. When supply-air or heat-exchanger temperatures rise beyond the L145-40F setpoint — indicating a blocked filter, failed blower, or restricted airflow — the switch opens the circuit and shuts down the burner. Once temperatures fall by the rated differential, the switch resets and normal operation resumes.
Key Features
- OEM Armstrong Furnace replacement part — direct-fit, no modifications required
- L145-40F designation: 145°F rated setpoint with 40°F differential
- Provides reliable high-temperature overheat protection for the heat exchanger and plenum
- Interrupts burner operation to prevent equipment damage and fire risk
- Designed for drop-in replacement in compatible Armstrong furnace models
- Durable construction for long service life in demanding residential and light-commercial heating applications
Application
This limit switch is a direct OEM replacement for compatible Armstrong Furnace models. Always consult your furnace’s service manual or cross-reference your existing part number before ordering to confirm fitment.
Specifications
- Part Number: R101082-01
- Type: High-Limit Switch
- Model Designation: L145-40F
- Setpoint: 145°F
- Differential: 40°F
- Brand: Armstrong Furnace
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