Field Controls Oil Venting Systems User Manual

Venting

for Oil Applications

May 2008

O I L V E N T I N G G U I D E

w w w . f i e l d c o n t r o l s . c o m

I N S I D E :

The Evolution of Venting

Power Venters

Sizing & Installation Specs

Control Kits & Safety Switches

System Setup & Maintenance

Direct Venting

Field Controls Product Evolution

Field Controls has made products for the oil and gas
heating markets since 1927. Starting with draft controls
for large, commercial furnaces, Field quickly began to
develop products for the residential market. Today Field

1982

1988

The PVO Power Venter

The indoor mounted PVO Power Venter provides
an economical power venting system for oil
appliances. All controls are built into these units. A
Vent Hood is required to terminate the vent system.

The SWG Aluminized Power Venter

Combined motor, blower and vent hood into one,
compact, easy to install unit. Primarily used with
gas applications.

Controls focuses on draft control, combustion air, and
power venting … products that improve and support oil
and gas burning equipment.

1993

2007

Note: A separate Gas Venting Guide is available for gas applications. For more information on Field Controls

products, wiring diagrams and installation manuals, visit www.fieldcontrols.com or call 252.522.3031.

The SWG Stainless Power Venter

Developed for oil applications. Designed to
withstand New England and Canadian winters.

The ComboVent™

All stainless unit includes combustion air connection
and extendable body for walls up to 14" thick.

3

The Evolution of Venting

Oil Burner

Oil Burner

Vent

Gases Out

As long as people have used fire to heat, it has been
necessary to vent the smoke and combustion gases
from the dwelling. Since heat rises, the natural solution
was to allow the gases to vent through the roof via a
hole or chimney. For centuries, this "natural draft" style
of venting has been the accepted standard for venting
stoves, furnaces and boilers. Whether fired by wood,
coal, oil or gas, this system worked well and, when
possible, is still used today.

homes restrict the infiltration of outside air which also
restricts natural draft. Higher efficiency furnaces
generate "cooler" exhaust gases which are more difficult
to exhaust naturally as well. These factors led to the
development of a mechanical method of venting to
properly remove combustion gases from the dwelling.

Homes without Chimneys

Electric heat grew in popularity through the 1960's
and 70's, resulting in the construction of homes without
chimneys. Today, many homeowners are converting
their heat from electric to gas or oil. In these cases, the
contractor is faced with a challenge of venting the
equipment. Choices include constructing a chimney or
mechanically venting through the sidewall. Sidewall
venting is much less expensive, easier and faster.

Power
Venting

Energy Efficiency and Tighter Homes

In the late 1970's and early 80's, energy efficiency
became a top priority in America resulting in tighter
homes and more efficient heating equipment. Tight

Conventional

Venting

Hot air rises. As long as a chimney exists, it is in good
condition and the combustion gases are warm enough
to rise naturally, this method can be effective and safe.

Mechanically pulls gases through the sidewall, saving
the cost and space required for a chimney.

Deteriorating Chimneys

Another factor contributing to the use and growth of
power venting has been the deteriorating chimney.
Oil and gas combustion generate acid rich gas that can
eventually destroy a clay or masonry chimney. A
deteriorating chimney can be relined with metal duct,
but even metal duct is subject to rust and corrosion due
to the destructive nature of the acid and condensation.
Sidewall venting is safer and less expensive than
relining a chimney.

4

The Evolution of Venting

Oil Burner

Vent

Gases Out

Combustion

Air

Oil Burner

Vent

Gases Out

Combustion Air

Power Venting
with Combustion Air

Provides fresh air for combustion while exhausting
combustion gases through one hole in sidewall.

Power Venting

In the early 1980's, Field Controls introduced the PVO
power venter. It was an indoor mounted power venter
connected to the outside wall via a vent hood. The PVE,
PVO and PVG series venters are still popular and in use
today. In 1988, Field introduced and patented the outdoor
mounted SWG power venter. It combined the motor,
blower, and vent hood in one convenient package.
The double wall pipe allows for near-zero clearance to
combustibles. The SWG is available aluminized for gas
applications and stainless steel for oil use. In 2007,
Field introduced the ComboVent™ Power Venter.
The ComboVent is all stainless and includes a
combustion air connection and an extendable body for
walls up to 14 inches thick.

Direct Venting

In response to the growing use of direct vent burners, Field
Controls developed the Field Direct™ Venting System in

2005. The FDVS is included as part of the original
equipment on many popular brands of furnaces and
boilers and is not yet available through wholesale
distributors. The FDVS includes a double wall system that
simultaneously vents combustion gases while bringing
combustion air to the burner.

Direct
Venting

The fan is a part of the furnace and forces
combustion gases out the sidewall via double-walled
sealed pipe. Combustion air is pulled into the
structure simultaneously.

5

™

ComboVent

Introducing the most versatile, easiest to install,
easiest to service, all inclusive combustion air/vent
system ever made.

A total system for combustion air
and venting.

A - Telescoping stainless steel body

Accommodates walls up to 14” thick

B - Combustion air connection included

Provides fresh air directly to burner
Coupler rotates 360° for easy installation

C - Two piece backing plate

Can be mounted at any point during installation

Easier to Service

D - Slotted hood with larger screws

Saves time during annual service

E - Quick-connect electrical coupling

Allows for easy motor access

Combustion Air. Power Venting. Combined.

NEW

Telescoping stainless steel body

Accommod ates walls up to 14" thick

A

D

1.7

1.3

E

138 3000
144 3100

Slotted hood with
larger screws

Quick-connect
electrical coupling

Specifications and Dimensions

Model Volts Hz Amps Watts RPM

CV-4
CV-5

115
115

60
60

Thermal

Protection

YES
YES

S t a i n l e s s S t e e l

Up to14"

C

Two piece backing plate

A B C D E F

4" 6"
5" 7"

113⁄4"-173⁄4"
113⁄4"-173⁄4"

B

•Combustion air
connection included

•Coupler rotates 360° for
easy installation

91⁄2" 9" 9"

103⁄4" 12" 121⁄4"

6