Invest in your energy future with the Field Oil Vent Damper (OVD) system. It works automatically to save fuel, improve comfort, and keep the heat within the conditioned space. The Field OVD installs in the vent pipe after the draft control and before the chimney. It can increase Annual Fuel Utilization Efficiency (AFUE) by up to 2%.
By automatically closing the damper at the end of each heating cycle like a fireplace damper, the OVD prevents drafts, improves comfort, and reduces heat loss. The average boiler or furnace will use a minimum of 5% less fuel. Homes with taller chimneys may save 10% or more.
A seven foot wiring harness is included with a pre-wired WMO-1 blocked vent safety switch. The WMO-1 shuts the oil burner off when a blocked vent condition is detected.
Note: Not for use with direct vent systems, sealed combustion systems, or vaporizing type burners.
Field’s Oil Vent Damper increases AFUE by up to 2% which translates to a savings of approximately 5% to 10% per year on heating costs. See the chart for a quick reference of potential savings over five years on a typical mid-efficiency system.
|Annual Fuel Usage (gallons)||900||1200||1500||1800|
|Potential Savings (over 5 years)||5% (5 ft. chimney)||$787||$1050||$1312||$1575|
|10% (taller chimney)||$1575||$2100||$2625||$3150|
|Assumes an average fuel cost of $3.50 per gallon|
|Model||Pipe Size||Length||Height||Clearance||Exposed Pipe||
|OVD-4PL||4||6||10 1/6||15/16||5||3 1/2|
|OVD-5PL||5||6||11 1/16||15/16||5||3 1/2|
|OVD-6PL||6||6 1/2||12 1/16||1 1/8||5 1/2||4|
|OVD-7PL||7||7 1/16||13 1/16||1 3/8||6 1/16||4 9/16|
|OVD-8PL||8||8 1/16||14 1/16||1 7/8||7 1/16||5 9/16|
All dimensions are in inches and are approximate. Specifications subject to change. For the most current specifications, contact Field Controls.