RDFU Installation Guide
Page 2
For use with 1, 2, or 3-Hour-Rated Floor-Ceiling and Roof-Ceiling Designs.
Flat Ceiling / Horizontal Mount Only.
For use with the following ventilation fan models:
Broan RB80, RB80L, RB110, RB110L, XB50, XB80, XB110, XB50L, XB80L, XB110L, XB110H, XB-
110HL, ZB80, ZB110, ZB80L, ZB110L, ZB110H, ZB110HL, ZB80M, ZB110M, ZB80ML, ZB110ML
NuTone RN80, RN80L, RN110, RN110L, XN50, XN80, XN110, XN50L, XN80L, XN110L, XN110H,
XN110HL, ZN80, ZN110, ZN80L, ZN110L, ZN110H, ZN110HL, ZN80M, ZN110M, ZN80ML, ZN110ML
Usage
Preparation
SEE DETAILS ON
UL CLASSIFICATION
MARKING ON PRODUCT
C
A
Lengthen Light and / or Sensor Lead Wires in Fan
These steps are best performed before installing the fan. Place
corrugated under the fan to protect counter tops and work surface.
Follow these steps before installing the radiation damper.
Light and sensor lead wires must be made longer to fit the
radiation damper.
You must purchase jumper kit model RDJUMPU from your local
Broan-NuTone dealer or distributor. Each kit contains:
1 - jumper for lighted fan models
1 - jumper for sensor fan models
1. Connect one end of the
LIGHTING JUMPER (A) to mating
connector in the fans wiring box.
2. Connect one end of the
SENSOR JUMPER (B) to mating
connector in the fan’s wiring box.
Attach Mounting Frame and Damper/Extension Assembly to
Fan Housing.
3. Attach
MOUNTING FRAME (C) to fan housing. Pull frame up
around housing until it snaps in place.
4. Attach
MOUNTING BRACKETS (D) to DAMPER/
EXTENSION ASSEMBLY (E).
5. Position the damper/extension assembly on top of the fan
housing. NOTE POSITION OF
KNOCKOUT (F) RELATIVE
TO
DUCT CONNECTOR OPENING IN THE FAN. Align holes
in the (4) mounting brackets with holes in the fan housing and
fasten with supplied
(4) #8 X 3/8” HEX HEAD SHEET METAL
SCREWS (G).
6. Route
JUMPER(S) (A) (B) towards the KNOCKOUT (F) in the
damper frame.
7 Press jumper wires into
PLASTIC SPLIT TUBE INSULATOR
(H) (supplied in damper parts bag). Push plastic split tubing
into knockout opening.
8 Attach supplied
CABLE CLAMP (I) to side of damper frame.
Align tab on cable clamp with mating slot in damper extension.
Secure clamp with supplied
#8 SHEET METAL SCREW (J).
B
1
Screws from Parts Bag
snap!
2
3
