TJERNLUND DB-2 DUCT BOOSTER 8504030 REV B 0900 Owner's Instructions

If installed on a forced warm air or cooling system where filters are properly installed and
maintained no cleaning of the DUCT BOOSTER® blower wheel should be required.
If installed on a gravity warm air heating system which does not include filters, the DUCT
BOOSTER® should be removed from the duct and cleaned at the start of each heating
season. The motor is permanently lubricated so no oiling is necessary. The DUCT
BOOSTER® motor normally runs hot to the touch.
LIMITED PARTS WARRANTY
Tjernlund Products, Inc. warrants the components of its products for one year from date
of installation. This warranty covers defects in material and workmanship. This warranty
does not cover normal maintenance, transportation or installation charges for replace-
ment parts or any other service calls or repairs. Products that are tampered with, dam-
aged, installed improperly, wired incorrectly or defective due to malfunctioning appliances
are not covered under this warranty. This warranty DOES NOT cover the complete
DUCT BOOSTER® if it is operable, except for the defective part.
TJERNLUND LIMITED ONE YEAR WARRANTY
Tjernlund Products, Inc. warrants to the original purchaser of this product that the product will be free from defects due
to faulty material or workmanship for a period of (1) year from the date of original purchase or delivery to the original
purchaser, whichever is earlier. Remedies under this warranty are limited to repairing or replacing, at our option, any
product which shall, within the above stated warranty period, be returned to Tjernlund Products, Inc. at the address list-
ed below, postage prepaid. THERE ARE NO WARRANTIES WHICH EXTEND BEYOND THE DESCRIPTION ON THE
FACE HEREOF, AND TJERNLUND PRODUCTS, INC. EXPRESSLY DISCLAIMS LIABILITY FOR INCIDENTAL OR
CONSEQUENTIAL DAMAGES ARISING FROM THE USE OF THIS PRODUCT. THIS WARRANTY IS IN LIEU OF ALL
OTHER EXPRESS WARRANTIES AND NO AGENT IS AUTHORIZED TO ASSUME FOR US ANY LIABILITY ADDI-
TIONAL TO THOSE SET FORTH IN THIS LIMITED WARRANTY. IMPLIED WARRANTIES ARE LIMITED TO THE
STATED DURATION OF THIS LIMITED WARRANTY. Some states do not allow limitation on how long an implied war-
ranty lasts, so that limitation may not apply to you. In addition, some states do not allow the exclusion or limitation of
incidental or consequential damages, so that above limitation or exclusion may not apply to you. This warranty gives
you specific legal rights and you may also have other rights which may vary from State to State. Send all inquiries
regarding warranty work to Tjernlund Products, Inc. 1601 9th Street, White Bear Lake, MN 55110-6794. Phone (651)
426-2993 • (800) 255-4208 • Fax (651) 426-9547 or email us at fanmail@tjfans.com.
DB-2 REPLACEMENT PARTS LIST
MOTOR KIT 950-7025
WHEEL KIT 950-7010
HOUSING KIT 950-7000
TJERNLUND PRODUCTS, INC.
1601 Ninth Street • White Bear Lake, MN 55110-6794
PHONE (800) 255-4208 • (651) 426-2993 • FAX (651) 426-9547
Visit our web site • www.tjernlund.com
COPYRIGHT © 2000 TJERNLUND PRODUCTS, INC.

MAINTENANCE

P/N 8504030 REV. B 09/00
DUCT BOOSTER
OWNERS INSTRUCTIONS
THESE INSTRUCTIONS MUST REMAIN WITH EQUIPMENT.
DO NOT DESTROY.
The DB-2 DUCT BOOSTER® is designed to increase the flow of heated air in warm air
heating systems, or cooled air in central air conditioning systems.
Its size and design limits its use to branch ducts serving individual rooms, not the main
supply or "truck line" duct. The DUCT BOOSTER® can be mounted on round or flat
ducts. It is frequently installed on a warm air duct of a gravity warm air furnace to
provide heating for a basement area.

SPECIFICATIONS

Motor: 120/1/60, 1550 RPM, 40 watts, .52 FLA

GENERAL INFORMATION

NOTE: Under normal operating conditions the motor casing of the DUCT BOOSTER®
will feel hot to the touch. The motor has been designed to run at this temperature and is
Recognized by Underwriters Laboratories (UL), This normal operating temperature will
not harm the motor provided the operation and maintenance instructions enclosed with
each unit are followed.
These units have been factory tested and rated in accordance with AMCA standard 210,
test code for air moving devices.
Each DB-2 is electrically factory line tested before shipment.
After opening carton, inspect thoroughly for hidden damage. Fan wheel should rotate
freely. If any damage is found, notify freight carrier and your distributor immediately and
file a concealed damage claim.
MODEL DB-2
®

DESCRIPTION