DBF 110 Specification Sheet
Fantech DBF110 Series Dryer Booster System
Description
A integral centrifugal fan and positive pressure sensing switch specically designed for residential dryer vent
booster applications. The fan can be mounted in any angle at any point along the duct work and straight-through
air ow design allows easy installation. By using FC type mounting clamps, fan can easily be removed from duct
work for service. Fan inlet and outlet are 3 7/8” diameter allowing direct installation into dryer vent duct thereby
eliminating the need for transition pieces. Motor bearings are a permanently sealed, self lubricating ball type.
DBF110 fan is backed by Fantech’s Five Year Warranty.
Installation Notes:
1) For maximum sensitivity, switch diaphragm must be mounted vertically. Failure to orient the
diaphragm vertically may result in improper operation.
2) Fan must be mounted a minimum of 15 linear (not equivalent) feet from the dryer in order to
prevent the impeller from loading with wet lint. If mounted within 15 feet, a secondary lint trap
(DBLT4) must be used. (see installation manual)
3) Fan should be inspected periodically, depending on amount of usage, and cleaned as necessary.
Guide Specications for Model DBF110 Dryer Vent Booster System
Inline fan shall be of the centrifugal, direct driven type.
Construction
Housing
Fan housing shall be constructed of UV resistant ABS-PC blen thermophastic.
Fan shall be supplied with an integreal external electrical terminal box with pre-wired terminal strip
connections.
Capacitor shall be provided and shall be located within the fan electrical terminal box.
Motor
Motorized impeller shall be an external rotor type, class B insulation, totally enclosed permanent split
capacitor type.
Bearings shall be permanently sealed self lubricating ball type
Motor shall be equipped with automatic reset thermal overload protection.
Motors shall be acceptable for continuous duty.
Wheel
Fan wheel shall be of the backward inclined centrifugal type with an inlet venturi for maximum performance.
Motorized impeller shall be both statically and dynamically balanced as one integral unit to provide for
vibration free performance.
Switch
Integral positive pressure switch shall be mounted on the fan and prewired to the terminal strip
provided in fan electrical junction box.
Switch shall be set to 0.05” H
2
O
g
static pressure.
Switch shall incorporate a delay-on-break timer cycle to maintain fan performance for intervals of
10 minutes until drying cycle is complete.
Code Approval
Fan shall be tested and approved by UL and CSA (or equals) for safety.
Rating shall include approval for residential dryer exhaust and air stream temperatures not to exceed
140˚F (60˚C).
K EC Series shall be manufactured under the authority of Fantech, Inc., Lenexa, KS.
Article #: 450426
Rev Date: 081412
United States 10048 Industrial Blvd. · Lenexa, KS 66215 · 800.747.1762 · www.fantech.net
Canada 50 Kanalakt Way · Bouctouche, NB E4S 3M5 · 877.797.2471 · www.fantech.net
Fantech, reserves the right to modify, at any time and without notice, any or all of its products’ features, designs, components and specications to maintain their
technological leadership position.

