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MODEL  QTRE080R

INSTALL THUMBSCREW 

& GRILLE

6.  Install thumbscrew through flange of motor plate as 

shown.

7.  Install ceiling material.  Cut out around housing.
8.  Squeeze grille springs and insert them into slots on 

each side of housing.  Push grille against ceiling.

EXISTING CONSTRUCTION INSTALLATION

1.  Enlarge the ceiling opening around the existing fan to 

11” x 12”.  The 11” dimension should run parallel to the 
ceiling framing.

2.  Carefully remove the existing fan housing from the 

ceiling.  Disconnect the ductwork and electrical wiring 
from the housing and leave them in place above the 
ceiling.

REMOVE EXISTING FAN

3.  Bend the four tabs back against the sides of the 

mounting frame.  Insert the mounting frame through 
the ceiling opening and let it rest on the back side of 
the ceiling material, directly over the ceiling opening.  
Position one side of the mounting frame so it touches 
the framing member.  Nail or screw mounting frame 
in place.  Extend the mounting frame to the opposite 
framing member, and nail or screw in place.

INSTALL MOUNTING FRAME

4.  Snap the duct connector onto the duct connector 

bracket.  Retrieve the existing ductwork from above the 
ceiling and connect it to the duct connector.  Tape the 
connection. NOTE: Existing rigid ductwork will require 
a short length of 4” flexible duct. Existing 3” ductwork 
will require a 3” to 4” transition.

CONNECT DUCTWORK

SCREW OR

NAIL (4)

FRAMING

MEMBER

MOUNTING

FRAME

EXISTING

DUCTWORK

DUCT CONNECTOR 

BRACKET

DUCT

CONNECTOR

CEILING

FRAMING

12”

11”

EXISTING

FAN

WARNING  

Before removing existing fan, switch power off at service 
panel and lock the service disconnecting means 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.

THUMBSCREW

Summary of Contents for ULTRA SILENT QTRE080R

Page 1: ...ing excessive or unusual noises replace the motor with the exact service motor The impeller should also be replaced OPERATION Use an on off switch or speed control to operate this ventilator See Connect Wiring for details Use of speed controls other than the Broan Models 78V and 78W may cause a motor humming noise To register this product visit www broan com BROAN THREE YEAR LIMITED WARRANTY Broan...

Page 2: ...or wall cap that has a built in damper to reduce backdrafts Plan to supply the unit with proper line voltage and appropriate power cable Housing mounted anywhere between I joists using mounting frame Housing mounted anywhere between standard joists using mounting frame Cooking Equipment Floor COOKING AREA Do not install above or inside this area 45o 45o NOT FOR USE IN A COOKING AREA A mounting fra...

Page 3: ...ackets of the mounting frame directly across from each other and insert the housing into the mounting frame until it touches the duct connector bracket Secure the housing to the mounting frame and duct connector bracket using the 5 screws provided Position the housing horizontally as desired 4 Connect 4 round ductwork to duct connector Run ductwork to a roof cap or wall cap Tape all ductwork conne...

Page 4: ...r the ceiling opening Position one side of the mounting frame so it touches the framing member Nail or screw mounting frame in place Extend the mounting frame to the opposite framing member and nail or screw in place INSTALL MOUNTING FRAME 4 Snap the duct connector onto the duct connector bracket Retrieve the existing ductwork from above the ceiling and connect it to the duct connector Tape the co...

Page 5: ...g electrical wiring from above the ceiling and use a UL approved connector to secure it to the wiring plate Re attach wiring plate to fan housing if necessary Connect wires as shown in wiring diagrams 7 Position the two movable brackets of the mounting frame directly across from each other and insert the housing into the mounting frame until it touches the duct connector bracket Secure the housing...

Page 6: ...onnector Bracket 10 97018138 Frame Assembly 11 99420665 Thumbscrew 8 18 x 375 Order service parts by Part No not by Key No SERVICE NOTE To remove Blower Assembly Unplug motor Remove thumbscrew 11 from motor plate flange Find the single TAB on the motor plate located next to the receptacle Push up near motor plate tab while pushing out on side of housing Or insert a straight blade screwdriver into ...

Page 7: ...Page 7 MODEL QTRE080R ...

Page 8: ...Page 8 MODEL QTRE080R 99044515B ...

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