General Information
“UL CLASSIFIED (see complete marking on
product)”
“UL CLASSIFIED to Canadian safety standards
(see complete marking on product)”
Standard 555C (Listing #R13446)
These installation instructions show recommended
installation procedures. These or other installation
methods may be followed subject to the approval of the
authority having jurisdiction.
Model CRD-310, 320, 350, 360, 310L, 320L, 310WT
and 700 are specific sizes of Greenheck’s model
DFD-350 dampers equipped with hardware to facilitate
installation with Greenheck model SP ceiling exhaust
fans.
The CRD-3xx(L, WT) series and CRD-700 dampers are
classified to function as a heat barrier in air handling
penetrations through fire resistive membrane ceilings.
They are intended to maintain the fire resistive integrity
of the ceiling. They can only be installed in conjunction
with the SP fan models shown and cannot be installed
alone.
NOTE:
Motors for fan models used in conjunction with
CRD shall be equipped with thermal cut-off fuse
control.
Receiving and Handling
Upon receiving dampers, check for both obvious
and hidden damage. If damage is found, record all
necessary information on the bill of lading and file
a claim with the final carrier. Check to be sure that
all parts of the shipment, including accessories, are
accounted for.
Dampers must be kept dry and clean. Indoor storage
and protection from dirt, dust and the weather is
highly recommended. Do not store at temperatures in
excess of 100°F (38°C).
Table of Contents
General Information ............................................. 2
Plaster Flange Application .................................... 3
Damper Installation to a SP Fan .......................... 4
Installation .........................................................5-7
• ETL - Wood Construction ............................. 5
• UL/cUL - 1 Hour Combustible Floor/Ceiling . 6
• UL/cUL - 3 Hour Non -Combustible Floor/
Ceiling ............................................................ 7
Maintenance ......................................................... 8
Troubleshooting .................................................... 8
Safety Warning
Improper installation, adjustment, alteration, service
or maintenance can cause property damage, injury
or death. Read the installation, operating, and
maintenance instructions thoroughly before installing
or servicing this equipment.
CRD Series for SP Fans
2
®
