eliminating the need for manifold modifications during field service

Quiet Startup: Engineered to minimize vibration and resonance during the pre-purge and post-purge cycles

this specific model is a 'close on rise' (or open on rise for cooling) configuration

Precision Timing: Microprocessor control ensures consistent 4-second ignition timing and eliminates mechanical drift found in older controllers

Bard HVAC AB3000-B Enhanced Alarm Board 321702-401 eliminating the need for manifoldThe Bard HVAC AB3000 B Enhanced Alarm Board is a critical field installed OEM component designed for legacy and modern Bard wall mount units. As a direct Bard replacement part, this board provides a sophisticated interface for HVAC system diagnostics, allowing technicians to monitor dry contact alarm outputs for high pressure, low pressure, and lockout conditions. This enhanced alarm board is essential for remote monitoring applications where real