Submittal Sheet

COMBUSTION AIR SYSTEM

Model: CAS-1

This product is designed for use on the Beckett AFII Series oil burners and

AF/AFG Series oil burner with a combustion air intake. For the purpose of routing

combustion air directly to the burner, with the added safety feature of the vacuum

relief valve.

Note: For burner inputs up to 2.0 GPH.

4” IAH HOOD

4” VRV

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COMBUSTION AIR SYSTEM Model: CAS-1 4” IAH HOOD 4” VRV This product is designed for use on the Beckett AFII Series oil burners and AF/AFG Series oil burner with a combustion air intake. For the purpose of routing combustion air directly to the burner, with the added safety feature of the vacuum relief valve. Note: For burner inputs up to 2.0 GPH.
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THE PURPOSE OF THE VACUUM RELIEF VALVE (VRV) The Vacuum Relief Valve is a safety device to guard against combustion problems associated with directly connecting oil burners to the outside. Typical problems can be caused by blockage of the intake termination, icing up of the duct work and effects of leeward side wind effects on a building. The VRV gate operates on changes in the vacuum pressure generated by the inlet to the oil burner.
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TERMINATION LOCATION GUIDELINES 1. Mount intake hood 12 inches above finished grade. If mounting on the side of a building prone to drifting snow, mount 12 inches above the snow line. 2. Mount at least 12 inches away and on the same wall if sidewall venting. 3. Always mount with the inlet vent termination opening pointing down. INLET VENT TERMINATION INSTALLATION Figure 6 1. Cut a 4 1/4" diameter hole through the sidewall of the building. 2.
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Page 4 PN 46255400 Rev D 06/00