Specification

18 Customer Service: 252.522.3031
Venting
Saves Fuel. Reduces Heating Bills.
Improves Efficiency.
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.
Burner and Transformer Electrical Rating
• Burner motors rated up to
1
⁄6 hp, 5.8 Amps
• Ignition Transformer rated at 250 VA or less
Dimensions (inches)
Model
Pipe Size Length Height Clearance Exposed Pipe
Pipe
Removal
A B C D E
OVD-4PL
4 6 10
1
⁄16
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
• Available in sizes 4"– 8"
• Blocked vent safety switch included
• Automatic power open/power close
• Two internal safety switches
• Flex seal provides self cleaning action
• Hold open service switch
• Stainless steel construction
• CSA listed
(Listed to UL-17 Standard and CSA B140.14)
Features
Benefits
• Reduces heating bill
• Improves efficiency
• Increases comfort
• Reduces off-cycle heat loss
All dimensions are in inches and are approximate. Specifications subject to change. For
the most current specifications, contact Field Controls.
Note: Not for use with direct vent systems, sealed combustion
systems, or vaporizing type burners.
Oil Vent Damper