Field Controls
Field Controls 01845401 8RC 8" Barometric Draft Control
Regulates draft on oil, wood or coal heating systems with adjustable calibration from .02" to .08"
- Calibrated for precise draft adjustment on oil, wood or coal systems
- Standard equipment on many leading furnace and boiler brands
- Sensitive operation from .02" to .08" requires instrumentation during installation
- 8-inch barometric control suits residential and commercial heating applications
- Field Controls model 1845401 designed for reliable draft regulation
8″ Barometric Draft Control for Oil, Wood or Coal
The Field Controls 01845401 8RC regulates chimney draft on residential and commercial heating appliances that burn oil, wood or coal. It mounts in the flue pipe and automatically maintains a steady negative pressure so the burner runs at the manufacturer’s specified rate.
Calibrated adjustment range from .02″ to .08″ w.c.
This single setting window determines whether the control matches the appliance. The unit ships calibrated for that span, and the manufacturer states that instrumentation should be used during installation to set it precisely to the furnace or boiler specification.
Fits 8″ round flue pipe on compatible oil.
The control requires an 8″ diameter vent connection and a draft gauge or manometer for commissioning. It replaces a fixed damper and frees the installer from manual balancing, but it cannot be used on gas-fired appliances or flue sizes other than 8″.
Highlights
- Calibrated for precise draft adjustment on oil, wood or coal systems
- Standard equipment on many leading furnace and boiler brands
- Sensitive operation from .02" to .08" requires instrumentation during installation
- 8-inch barometric control suits residential and commercial heating applications
- Field Controls model 1845401 designed for reliable draft regulation
Specifications
| Brand | Field controls |
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Questions about this item
What does the .02" to .08" calibration range mean for my furnace or boiler?
The control adjusts draft pressure between .02 and .08 inches of water column, matching the appliance manufacturer's required setting for proper combustion.
How does the barometric draft control connect to the vent system?
The 8RC model fits an 8-inch round vent connector and uses a weighted flapper to regulate draft automatically.
What clearance or mounting space does the 8-inch draft control need?
The unit installs in the breeching or vent pipe with the hinge horizontal, requiring enough straight run for the flapper to swing freely.
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