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MODELS 678 • 679 • 680 • 679FL • 680FL
!
WARNING
TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK, OR INJURY
TO PERSONS, OBSERVE THE FOLLOWING:
1. Use this unit only in the manner intended by the manufacturer. If you
have questions, contact the manufacturer at the address or telephone
number listed in the warranty.
2. Before servicing or cleaning unit, switch power off at service panel
and lock the service disconnecting means to prevent power from be-
ing switched on accidentally. When the service disconnecting means
cannot be locked, securely fasten a prominent warning device, such
as a tag, to the service panel.
3. Installation work and electrical wiring must be done by a qualified
person(s) in accordance with all applicable codes and standards,
including fire-rated construction codes and standards.
4. Sufficient air is needed for proper combustion and exhausting of
gases through the flue (chimney) of fuel burning equipment to prevent
backdrafting. Follow the heating equipment manufacturer’s guideline
and safety standards such as those published by the National Fire
Protection Association (NFPA), and the American Society for Heat-
ing, Refrigeration and Air Conditioning Engineers (ASHRAE), and
the local code authorities.
5. When cutting or drilling into wall or ceiling, do not damage electrical
wiring and other hidden utilities.
FAN/LIGHT
COMBINATION
VENTILATORS
READ AND SAVE THESE INSTRUCTIONS
Installer: Leave this manual with the homeowner.
Homeowner: Use and Care information on page 4.
WARNING
6. Ducted fans must always be vented to the outdoors.
7. If this unit is to be installed over a tub or shower, it must be marked as
appropriate for the application and be connected to a GFCI (Ground
Fault Circuit Interrupter) - protected branch circuit.
8. Never place a switch where it can be reached from a tub or shower.
9. Fluorescent models only: Do not use a dimmer switch to control
the light of this unit.
10. This unit must be grounded.
CAUTION
1. For general ventilating use only. Do not use to exhaust hazardous
or explosive materials and vapors.
2. This product is designed for ceiling installation only. This product
is designed for installation in ceilings up to a 12/12 pitch. Ductwork
must point up. DO NOT MOUNT THIS PRODUCT IN A WALL.
3. To avoid motor bearing damage and noisy and/or unbalanced impel-
lers, keep drywall spray, construction dust, etc. off power unit.
4. Please read specification label on product for further information and
requirements.
2678F, 2679F, 2680F, FL2679F
& FL2680F FINISH PACKS
FOR USE WITH
3677H HOUSING PACK
TYPICAL INSTALLATIONS
HOUSING
CEILING
JOIST
CEILING
MATERIAL
POWER CABLE
MOUNTING
BRACKETS
GRILLE
HOUSING
CEILING
JOIST
CEILING
MATERIAL
POWER CABLE
MOUNTING
BRACKETS
For a rigid mount: Brackets can
be joined together with a
#8 x 3/8 self-tapping screw
GRILLE
16”-ON-CENTER
CEILING JOISTS
24”-ON-CENTER
CEILING JOISTS
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