REFERENCE
QTY.
REMARKS
Project
Location
Architect
Engineer
Contractor
Submitted by
Date
Broan-NuTone LLC Hartford, Wisconsin www.nutone.com 888-336-3948
A
rchitectural & Engineering Specifications
February 2008
DESCRIPTION
HOUSING:
• Rugged, 26-gauge galvanized steel construction
• Key-holed mounting brackets span up to 24” and are adjustable
horizontally and vertically
• Reversible knockout bracket allows wiring from top or side
• 4” round duct fitting with built-in backdraft damper for easy duct
connection
BLOWER:
• Plug-in, permanently lubricated motor
• Totally enclosed motor with long life bearings designed for
continuous operation (HD80RDB, HD50RDB only)
• Centrifugal blower wheel
RADIATION DAMPER:
• For use in 1, 2 and 3 hour rated floor-ceiling and roof-ceiling
constructions
• Galvanized steel frame
• High temperature, non-asbestos, reinforced fiber thermal fabric
• Stainless steel closure springs
• 165°F fusible link
GRILLE:
• Attractive steel grille painted white
• Low profile blends well with any decor
80B 99043057D
INSTALLATION
Complete installation instructions are included with each Ventilating
Fan Kit.
ARCHITECT’S SPECIFICATION
Ventilation Fan with Radiation Damper shall be NuTone Model
RDA with 110RDB (RDA with 80RDB) (RDA with HD80RDB) (RDA
with HD50RDB).
Housing shall be made of galvanized steel and have adjustable
mounting brackets. It shall have a built-in backdraft damper and
be ducted to a roof or wall cap.
Blower shall be removable and have a centrifugal blower wheel.
Motor shall be permanently lubricated.
Air delivery shall be no less than and sound level shall be no
greater than values listed in the chart to the left. Air and sound
ratings shall be certified by HVI.
Radiation damper shall be rated for use in up to three hour ceiling
constructions. It shall be UL Classified and Warnock Hersey Listed
(see other side for installation details).
Ventilation Fan with Radiation Damper shall be Energy Star
®
qualified (Model HD50RDB only).
MODEL
RDA
RDB
MODELS
Ventilating Fans With
Radiation Dampers
(1) rough-in Kit & (1) finish Kit maKe a
complete unit. purchase each separately.
Rough-In Kit
Model RDA •
Contains housing and radiation damper
(packed 4 per carton).
Finish Kits
Models 110RDB, 80RDB, HD80RDB and HD50RDB •
Contain blower and grille (packed 4 per carton).
RDA with VOLTS AMPS CFM SONES
DUCT
110RDB
120
1.3
110
4.0
4
”
ROUND
80RDB
120
0.5
80
2.5
4
”
ROUND
HD80RDB
120
0.5
80
2.5
4
”
ROUND
HD50RDB
120
0.4
50
1.5
4
”
ROUND
SPECIFICATIONS
CLASSIFIED
Model
HD50RDB
only
