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chinook

Controller for Eberspacher BN2 heater.

Description

This repository contains code and PCB schematics for a digital controller for the Eberspacher BN2 gasoline forced-air heater (early model). The BN2 was used in '60s-'70s air-cooled Volkswagens and was controlled by relay logic. The system in this repository replaces the unreliable relay logic system.

Current Functionality

  • On/off control of fan, fuel pump, glow plug.
  • Timing for startup, shutdown sequences.
  • Safety checks using flame sensor and overheat protection switch.

Future Functionality

  • Continuous control of fan speed and fuel pump rate with thermostat feedback.
  • CO detection in air stream.

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Controller for Eberspacher BN2 heater.

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