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General Information
"UL CLASSIFIED (see complete marking on
product)"
"UL CLASSIFIED to Canadian safety standards
(see complete marking on product)"
Standard 555C (Listing #R13446)
Installation Supplements
Refer to the appropriate Greenheck installation
supplements for special requirements
(www.greenheck.com links are underline):
•
Fusible Link Replacement for Volume Controller
Online version of this installation is available at
www.greenheck.com.
CRD-1 and CRD-2WT
instructions
Pre-Installation Guidelines
1) CRD's are shipped from the factory with the blades in the closed position. The fusible link must be installed at the
time of installation such that the blades are held open as shown in Figure 2.
2) Fasteners (screws, bolts, rivets, etc. ) used for installation must not interfere with blade operation.
3) Flexible duct must be class 1 or 0 type, bearing the UL listed mark. Steel duct must be a minimum 28 ga. (.5 mm)
and maximum of 20 ga. (1 mm).
4) Ceiling damper must be installed as described in these installations.
5) Ceiling penetrations shall be located between floor/ceiling trusses.
6) The CRD-1WT's supplied without a factory supplied plenum box require a steel or ductboard plenum to be field
installed (see pages 4 - 6). The CRD-2WT's are always provided with a factory supplied plenum box.
7) Dampers shipped with factory attached plenums MUST be installed prior to sheetrock ceiling installation.
2
CRD-1WT & CRD-2WT
GA File No.
FC 5012
FC 5078
FC 5101
FC 5119
FC 5121
FC 5514.4
FC 5515
FC 5515.3
FC 5516
FC 5519
FC 5521
FC 5528
RC 2603
RC 2604
RC 2606
RC 2609
RC 2612
GA = Gypsum Association Fire Resistance Manual
22 nd Edition
Figure 2
UL Design No.
M508
L558
L574, M508
L592
L528, L546, L574, M508
L585
L528
M503
L528
L574
L562
L528
P533
P554
P545
P538
P545, P554
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