NuTone RDFUWT Installation Manual
READ AND SAVE THESE INSTRUCTIONS
Installer: leave this guide with homeowner.
For Warranty Statement, Service Parts, Technical Support, or to Register your product,
please visit our website or call: In the United States - Broan.com 800-558-1711or
NuTone.com 888-336-6151. In Canada - Broan.ca or NuTone.ca 877-896-1119
RDFUWT
Premium
Radiation Damper
INSTALLATION GUIDE
Easy installation
© 2019 Broan-NuTone LLC
Page 2
RDFUWT – Installation Guide
Usage
For use with 1, 2, or 3-Hour-Rated Floor-Ceiling and Roof-Ceiling Designs.
UL/ cUL Listed for use in the following Floor Ceiling and Roof Ceiling Assemblies: L521, L528, L546, L558,
L562, L574, L576, L581, L583, L585, P522, P533, P538, P545, and P547 when installed per the following
instructions:
Flat Ceiling / Horizontal Mount Only.
For use with the following ventilation fan models:
Broan XB50, XB50L, XB50L1, XB80, XB80L, XB80L1, XB110, XB110L, XB110L1, XB110H, XB110HL,
XB110HL1, ZB80, ZB80M, ZB110, ZB110H, ZB110M, ZB80L, ZB80L1, ZB80ML, ZB80ML1, ZB110L, ZB110L1,
ZB110HL, ZB110HL1, ZB110ML, ZB110ML1, QT130E, QT130LE, QT140E, QT140LE, QTXE150, QTXE150FLT,
QTXE110150DC, QTXE110150DCL, QTXE110150DCS, QTXE110150DCSL
Broan Canada XB50C, XB90C, XB90LC, XB90HC, XB110C, XB110LC, XB110HC, ZB110C, ZB90C, ZB110LC, ZB90LC, ZB110HC, ZB110MC,
ZB90MC, ZB90HC, ZB110MLC, ZB90MLC
NuTone QTN130E, QTN130LE1, QTXEN150, QTXEN150FLT, XN50, XN50L, XN80, XN80L, XN110, XN110L, XN110H, XN110HL, ZN80,
ZN80M, ZN110, ZN110H, ZN110M, ZN80L, ZN80ML, ZN110L, ZN110HL, ZN110ML
NuTone Canada XN50C, XN90C, XN110C, XN90LC, XN90HC, XN110LC, XN110HC, ZN90C, ZN90LC, ZN90HC, ZN90MC, ZN90MLC,
ZN110C, ZN110LC, ZN110HC, ZN110MC, ZN110MLC
Twin City T080E, T110E, T150LP
PennBarry ZQ80-GPE, ZQ110-GPE, ZQ80L-GPE, ZQ110L-GPE
York CIQ80-GPE, CIQ110-GPE, CIQ80L-GPE, CIQ110L-GPE
SEE DETAILS ON
UL CLASSIFICATION
MARKING ON PRODUCT
Prepare Fan
The following steps are best performed on a work surface
before fan installation. Protect counter tops by placing
corrugated sheet under the fan.
1
2
3
B
A
1. Remove blower and all packing material from fan
housing.
2. Assemble SUPPORT BRACKET (A) (supplied with
radiation damper) to fan blower as shown. Secure the
bracket to motor studs with (2) #8-32 HEX NUTS (B)
supplied in radiation damper parts bag.
Page 3
C
RDFUWT – Installation Guide
3. Reinstall blower into fan housing. Install (2) #8 x ½” HEX HEAD SHEET METAL SCREWS
(C) supplied in fan parts bag.
4. Slide (4) MOUNTING BRACKETS (D) into slots on four sides of RADIATION DAMPER
EXTENSION FRAME (E). Make sure they snap into place and are securely engaged after
assembly.
5. Center the radiation damper over the fan housing. Make sure NOTCH (F) is correctly
positioned relative to the DUCT CONNECTOR OPENING (G).
6. Align radiation damper mounting bracket with (4) dimples in fan housing.
7. Secure brackets to fan housing using (4) #8 X 3/8” SELF-DRILLING SHEET
METAL SCREWS (H) (supplied in radiation damper parts bag) inserted through
dimples in housing.
E
H
D
I *
C
H
L
F
K
FANS WITH INCANDESCENT
OR FLUORESCENT LIGHTS
I * Jumper for Motion or
Humidity-Sensing units only.
Steps 8 through 12:
Lighted Fans, Humidity-Sensing Fans, or
Motion Sensing Fans ONLY.
For fans not equipped with a light, a humidity sensor or a
motion sensor: Skip to Step 13.
8. Make lead wires longer. Purchase jumper kit model
RDJUMPU or RDJUMPU1 from your local BroanNuTone dealer or distributor.
Each kit contains:
1 - Jumper for lighted fan models
1 - Jumper for sensor fan models
9a. For fans equipped with incandescent or fluorescent
9b. For fans equipped with LED lights, connect one end
lights, connect one end of the LIGHTING JUMPER
(K) to mating connector in the fan’s wiring box.
of the LIGHTING JUMPER (K) to mating connector
from LED DRIVER (J).
M
J
K
I *
G
FANS WITH LED LIGHTS
I * Jumper for Motion or
Humidity-Sensing units only.
9c. For fans equipped with humidity or motion sensors,
connect one end of the SENSOR JUMPER (I) to
mating connector in the fan’s wiring box.
10. Route JUMPER(S) (I) (K) towards the NOTCH (F) in
the damper frame.
11. Press jumper wires into PLASTIC SPLIT TUBE
INSULATOR (L) (supplied in damper parts bag). Push
plastic split tubing into NOTCH (F) opening.
12. Align tab on CABLE CLAMP (M) with mating slot in
damper extension. Secure clamp with supplied (4) #8
X 3/8” SELF-DRILLING SHEET METAL SCREWS
(H).
Page 4
O
P
RDFUWT – Installation Guide
L
T
INSERT
TAB INTO
SLOT IN
HOUSING
TOP AND BOTTOM FLANGES
REMAIN OUTSIDE OF HOUSING
snap!
snap!
Step 13:
XB, ZB, XN, ZN Models ONLY
13. Slide MOUNTING FRAME (O) onto fan housing. Pull
frame up around housing until it snaps into place.
Secure mounting frame to fan housing with (2) #8
X 3/8” FLAT HEAD SHEET METAL SCREWS (P)
supplied in the fan parts bag.
R
Q
S
SCREW FROM
PARTS BAG
15. Install 6” DUCT CONNECTOR (T) to fan housing and
secure with screw supplied in fan parts bag.
Step 14:
QT Models ONLY
14. Attach MOUNTING CHANNELS (Q) to housing using
SCREWS (R) supplied in fan parts bag.
Insert SLIDE BRACKETS (S) into mounting channels.
Page 5
ON-CENTER
Prepare Ceiling & Install Fan in Ceiling
This radiation Damper and Fan Combination is UL/ cUL
Listed for use in the following Floor Ceiling and Roof
Ceiling Assemblies: L521, L528, L546, L558, L562, L574,
L576, L581, L583, L585, P522, P533, P538, P545, and
P547.
16. Install additional 2 X 4 VERTICAL BLOCKS (U) as
shown.
17. Make sure lower edge of radiation damper is flush
with INTERIOR SIDE OF FINISHED CEILING.
18. Securely fasten mounting support brackets to (4)
vertical blocks.
19. Attach round metal duct to the duct connector
and discharge air to an outside location. Seal all
connection joints with duct tape.
RDFUWT – Installation Guide
U
12”
Connect Wiring
20. Refer to instructions supplied with the fan for various
electrical wiring configurations.
Finish Installation
V
X
W
21. Install MASK (V) supplied with the fan to protect damper
and fan from drywall spray, construction dust, etc.
22. Finish ceiling around radiation damper opening. Ceiling
opening must be no larger than the outside of the
radiation damper.
23. Remove MASK (V) from housing.
24. Fasten (2) PLASTER SUPPORTS (W) to the
radiation damper extension with (6) #8 X 3/8” SELF-
DRILLING SHEET METAL SCREWS (X). (Supplied
in radiation damper parts bag.)
Page 6
Install Grille
RDFUWT – Installation Guide
I
1
2
Y
K
Z
Step 25:
Lighted Fans ONLY.
25. Attach connector from the LIGHT JUMPER WIRE (K)
to mating connector(s) from the grille.
Service Feature For Fans
Step 26:
Humidity-Sensing Fans and Motion Sensing Fans ONLY.
26. Connect SENSOR JUMPER WIRE (I) into the sensors
connector located on the grille.
27. Squeeze 2 GRILLE SPRINGS (Y) and slide into tabs
on the radiation damper frame. Push GRILLE (Z) until
it’s tight against ceiling surface.
If additional clearance is required between ceiling and
grille, replace grille springs with longer ones (provided
in parts bag).
If your ventilation fan needs service, the inner damper can
be removed from the outer frame without disturbing the
surrounding ceiling material.
Remove the grille and disconnect all electrical connections
from the grille.
Remove (4) screws, then lower the inner damper to access
ventilation fan. Replace the inner damper before operating fan.
99045952F
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