NuTone 672R User Manual

The Exhaust Fan consists of the housing, power unit/blower

assembly (motor, wheel, mounting plate), grille and duct collar.

When installing the Exhaust Fan in a new construction site,

install the housing during the rough-in construction. The blower
unit and grille should be installed after the finished ceiling is in
place.

To install the Exhaust Fan in an existing finished building, an

accessible area is required above the planned location (attic or
crawl space).

A. Use this unit only in the manner intended by the

manufacturer. If you have questions, contact the
manufacturer.

B. Before servicing or cleaning unit, switch power off at service

panel and lock service panel to prevent power from being
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.

For general ventilating use only. Do not use to exhaust

hazardous or explosive materials and vapors.

To reduce the risk of fire or electric shock, do not

use this fan with any solid-state speed control.

A. Installation work and electrical wiring must be done by

qualified person(s) in accordance with all applicable codes
and standards, including fire-rated construction.

B. Sufficient air is needed for proper combustion and

exhausting of gases through the flue (chimney) of fuel
burning equipment to prevent back drafting. 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
Heating, Refrigeration and Air Conditioning Engineers
(ASHRAE), and the local code authorities.

C. When cutting or drilling into wall or ceiling, do not damage

electrical wiring and other hidden utilities.

D. Ducted fans must always be vented to the outdoors.
E. 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.

F. NEVER place a switch where it can be reached from a tub or

shower.