Nailor 0763 User manual

Page 4.0584/13 IOM-CRD0763INST
INSTALLATION INSTRUCTIONS
CEILING RADIATION DAMPERS
FOR USE IN WOOD TRUSS ASSEMBLIES
UL DESIGN NUMBERS L550, L574, L579, L585, M503 P531, P545,
P547, P552
MODEL: 0763
Nailor Industries Inc. reserves the right to change any information concerning product or specification without notice or obligation.
Page 1 of 2
F 5/8" (16) Gypsum Wallboard
(refer to specific UL Design No.)
G RC Channel
H Plaster Flange
I Round Ceiling Damper
A Steel Register box (boot), by others,
Min. 28 ga. (0.474) insulated.
B Steel frame Grille/Register, 26 ga.
(0.55) minimum, see note 6
C 3/4" x 3/4" x 16 ga. (19 x 19 x 1.61) or
1 1/2" x 1 1/2" x 22 ga (38 x 38 x 0.85)
Support Angle (2 sides), see notes 2 & 3
D Flex Duct UL Classified Air Duct (Class 0 or 1)
E Wood Truss (refer to specific UL Design No.)
DETAIL B END VIEW WITH GRILLE
A
I
C
E
G
F
C
F
G
C
E
A
BH
D
"X" "X"
H
4" (102) MIN.
LISTED SIZE W x H
Refer to the
UL Classification
Marking on the
Product
NOTES:
1. Before installing, open damper blades and install fusible link between spring loaded wire clips. Do not bend or deform clips
after assembly. If dampers are provided with link tabs instead of wire clips, install link and bend tabs to secure link in position.
2. Attach 3/4" x 3/4" x 16 ga. (19 x 19 x 1.61) or 1 1/2" x 1 1/2" x 22 ga. (38 x 38 x 0.85) support angles to steel register box
with a minimum of two #8 screws or 3/16" (5) dia. steel rivets or spot welds each side. Distance from bottom of angle to
bottom of plaster flange (X) should be the combined thickness of the wood truss member and the RC channel (See Detail
A). Make sure fasteners do not interfere with damper operation.
3. Install assembly between trusses as shown in End View and attach support angles to truss lower members using 1 1/4" (32)
long type S steel screws or similar. See Detail B for alternate support angle attachment method.
4. Ceiling penetrations should be located between adjacent trusses and RC channels. If required, a maximum of one RC
channel may be cut or notched to enable proper damper location. The clearance between the damper assembly and the
cutout in the ceiling material shall be a maximum of 1/8" (3) on any side.
5. Flex duct shall be UL Classified Air Duct Class 0 or Class 1 and shall be attached to the plenum collar with steel clamps,
plastic straps, or minimum 18 gauge steel wire.
6. The grille/register frame shall be 26 gauge (0.55) minimum steel and shall be attached with a minimum of two #8 x 1 1/4"
(32) min. screws through the ceiling material and into the plaster flange.
7. Refer to UL Fire Resistance Directory Vol. I for details on UL Floor/Ceiling Design No.’s L550, L574, L579, L585, M503 and
Roof/Ceiling Design No.’s P531, P545, P547, P5521 Hour Fire Rating.

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Page 2 of 2
SUPPLEMENTARY INSTALLATION INSTRUCTIONS
FABRICATION OF STEEL PLENUM
Internal
Insulation
Insulation Detail
LISTED SIZE
W x H
1"
(25)
1/2" (13)
INTERNAL INSULATION
LISTED SIZE W x H
1"
(25)
1/2" (13)
FASTENER
CRD12
DAMPER 11" (279) MAX
2" (51) MAX
W + 2" (51)
H
WH+2" (51)
NOTES:
1. The steel plenum box and top shall be a minimum of 28 ga. (0.47) galvanized steel fastened together per SMACNA HVAC
Duct Construction Standards, 4" (102) OC.
2. The outlet collar shall be 28 ga. (0.47) and shall be undersized 1/8" (3) small than the diameter of the damper frame.
3. The damper shall be attached to the plenum box collar using steel rivets, spot welds, lock forms, or sheet metal screws, 4"
(102) max. OC, equally spaced around the circumference of the collar. Make sure fasteners do not interfere with damper
operation
4. Insulation shall be semi rigid Type R-6, 1 1/2" (28) or Type R-8, 2" (51) fiberglass duct liner, minimum density 1.5 pcf.
Insulation is self-supporting within plenum box. All internal surfaces must be lined with insulation, excluding outlet collar. The
bottom edge of the insulation is trapped by a lip that is formed on the plenum box that extends a min. of 1" (25) from the
inner edge of the opening to the outer edge of the box and extends a min. of 1/2" (13) up into the opening. See detail above.
5. Refer to page 1 of 2 of document IOM-CRD0763INST for ceiling damper installation detail.
6. The 0763 Series Ceiling Radiation Damper is classified for use in specific wood truss ceiling assemblies. See UL Fire
Resistance Directory for Floor/Ceiling design No.’s L550, L562, L574, L579, L585, M503 and Roof/Ceiling design No.’s P531,
P538, P545, P547, P552.
CRD12 DAMPER
FASTENERS
H+2 (51) W + 2" (51)
PLENUM
4 1/2" (114) MAX
WH
Type F Plenum
45° Inlet. Insulated Register Box
Round ceiling damper in inlet collar.
Min. size: 8" x 4" (203 x 102), 5" (127) dia. inlet
Max. size: 14" x 6" (356 x 152), 8" (203) dia. inlet
Max. Overall Height: 11" (279)
Type G Plenum
Top Inlet. Insulated Register Box
Round ceiling damper in inlet collar.
Min. size: 8" x 4" (203 x 102), 4" (102) dia. inlet
Max. size: 14" x 8" (356 x 203), 8" (203) dia. inlet
Max. Overall Height: 8" (200)