TJERNLUND DC BAROMETRIC DRAFT CONTROL LIT 8500490 REV B... User manual

Tjernlund venting products offer reliable
performance, ease of installation and
care-free maintenance ... at an affordable price.
TJERNLUND
DRAFT CONTROLS
B Series: Double Acting
Standard Control for Gas Heating
Appliances.
The Problem:
Heating appliances are designed to
operate with a consistent draft. Chimney
configurations, mechanical draft fans
and weather can cause draft fluctuations.
These fluctuations result in inefficient
combustion and more frequent service
calls.
The Solution:
Draft controls regulate the airflow through
a chimney or vent. By diluting the
chimney/vent draft with varying amounts
of room air they maintain the draft at a
heater’s flue outlet within a consistent,
safe and efficient range.
TYPICAL DRAFT
CONTROL INSTALLATION
A Series: Single Acting Deluxe
Stainless Steel Control for Oil, Solid
Fuel and Fan Assisted Gas Burners.

Since 1938, Tjernlund has built a
solid reputation throughout North
America for innovative products and
venting solutions.Through four
generations of family ownership,
your complete satisfaction continues
to be our primary focus.
General Description
You Can Count On Tjernlund Venting Products With Confidence
Draft Controls are available from:
Series A
This single acting deluxe unit is made of stainless
steel for low maintenance and corrosion
resistance. It has integral anchor points and self-
aligning, self-centering rocker bearings for long
lasting service. A cushioned stop minimizes rattle
and noise. Adjustment is easily accomplished by
moving counter weight on outside tab.
Series B
This quality engineered control is double acting
for installation on gas fired appliances. It has
many practical features including: self-aligning,
self-centering rocker bearings, polished chrome
adjustment knob, ultra-light sensitivity and
rugged, galvanized construction.
®
Application Tables
SERIES A
SINGLE ACTING FOR OIL, SOLID FUEL
& FAN ASSISTED GAS BURNERS
MODEL
PIPE SIZE
TJERNLUND PRODUCTS, INC.
1601 Ninth Street White Bear Lake, MN 55110-6794
Phone: [phone].255.4208 Fax: [phone]
Visit our web site: www.tjernlund.com
Copyright © 1999 Tjernlund Products, Inc. All rights reserved. P/N 8500490 Rev B 2/00
DC4* DC6 DC7 DC8
4''
DC5
5'' 6'' 7'' 8''
SERIES B
DOUBLE ACTING FOR GAS
MODEL
PIPE SIZE
DC4G DC6G DC7G DC8G
4'' 6'' 7'' 8''
DC9G DC10G
9'' 10''
TJERNLUND
DRAFT CONTROLS
For further information on draft controls or other Tjernlund venting products, contact your
heating supply distributor or Tjernlund Products:
*DC4 constructed of galvanized steel