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Greenheck 463543 Field Supplied Sleeves on Fire Smoke Dampers Operating instructions

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  • What is the maximum thickness allowed for the damper sleeve?
    What are the allowed methods for attaching the damper frame to the sleeve?
    What is the maximum extension of the sleeve beyond the wall for multi-blade fire dampers with an access door on the opposite side?
    How many attachments are required on each side of the damper frame?
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Field Supplied Sleeves 1
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Document 463543
Field Supplied Sleeves for Fire Dampers
and Combination Fire Smoke Dampers
Refer to:
‘Installation Instructions for Multi-blade Fire & Combination
Fire Smoke Dampers’ (Part #481318)
or
‘Installation Instructions for Curtain Fire Dampers’
(Part #481324) for additional details
1. GAUGES AND LENGTHS OF FIRE DAMPER SLEEVES
All fire smoke dampers must be installed in a steel sleeve of the required gauge and length. See Table 1 for required
minimum sleeve gauges. Maximum sleeve thickness is 10 gauge (3.5 mm). Sleeve inside dimensions must equal
damper outside dimensions.
Multi-blade Fire and Combination Fire Smoke Dampers
Sleeves shall extend a maximum of 16 in. (406 mm) beyond the wall or floor on the actuator or manual quadrant side
of the damper (see Figure 1). When an access door is incorporated as a part of the sleeve on the side opposite the
actuator or manual quadrant, the sleeve shall also extend a maximum of 16 in. (406 mm) beyond the wall or floor.
When there is no access door incorporated as part of the sleeve, the sleeve shall extend a maximum of 6 in. (152
mm) beyond the wall or floor on the side of the damper opposite the actuator or manual quadrant.
Curtain Fire Dampers
Sleeves shall extend a maximum of 6 in. (152mm) beyond the wall or floor opening on each side (see Figure 2).
When a factory mounted access door is installed as part of the sleeve, the sleeve may extend a maximum of 16 in.
(406mm) beyond the wall or floor opening on the access door side.
2. ATTACHING FIRE DAMPERS SLEEVES
All four sides of the damper frame must be attached to the sleeve with one row of attachments on each side of the
frame. Attachments must be spaced a maximum of 6 in. (152 mm) on centers and a maximum of 2 in. (51 mm) from
corners. A minimum of 4 attachments (2 on each side of the frame) per side (16 per damper) are required. One of
the methods of attachment shown below must be used.
• tack or spot welds
• #10 sheet metal screws
•
1⁄4 in. (6 mm) bolts and nuts
•
3⁄16 in. (4.7 mm) steel pop rivets
463543 • Field Installed Sleeve, Rev. 9, August 2023 Copyright 2023 © Greenheck Fan Corporation2
As a result of our commitment to continuous improvement, Greenheck reserves the right to change specifications
without notice.
Product warranties can be found online at Greenheck.com, either on the specific product page or in the
literature section of the website at Greenheck.com/Resources/Library/Literature.
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Phone: 715.359.6171 • Fax: 715.355.2399 • Parts: 800.355.5354 • E-mail: [email protected] • Website: www.greenheck.com
Our Commitment
Minimum Sleeve Thickness for Fire Dampers
Type of Duct to
Sleeve Connection
Duct Duct Dimension
in. (mm)
Sleeve Gauge
Rigid Round
Rectangular
24 in. (610mm) max. diameter
36 in. (914 mm) max. width or
24 in. (610mm) max. height
16 (.060 in.)
[1.5 mm]
Rigid Round
Rectangular
over 24 in. (610mm) diameter
over 36 in. (914 mm) width or
over 24 in. (610mm) height
14 (.075 in.)
[2 mm]
Breakaway
(or no duct)
Round or
Rectangular
12 in. (305 mm) wide and under
13 in. - 30 in. (330 mm - 762 mm) wide
31 in. - 54 in. (787 mm - 1371 mm) wide
55 in. - 84 in. (1397 mm - 2134 mm) wide
85 in. (2159 mm) wide and over
26 (.018 in.) [.46 mm]
24 (.024 in.) [.6 mm]
22 (.030 in.) [.76 mm]
20 (.036 in.) [.9 mm]
18 (.048 in.) [1.2 mm]
Important Note: Sleeve thickness must not be less than the gauge of the connecting duct.
UL Standard 555 requires all ducts to terminate at the fire damper sleeves or the damper frames.
Table 1: Minimum sleeve thickness for fire dampers.
Optional blade indicator
and/or electric link.
LINE OF WALL
DO NOT INSTALL SCREWS
BETWEEN THESE LINES
AROUND ENTIRE DAMPER
Retaining Angles
(see Section 4)
Line of Wall
Airflow
Detail 1
DO NOT INSTALL SCREWS
BETWEEN THESE LINES
AROUND ENTIRE DAMPER
Access door required on
jackshaft side of damper.
Refer to the latest edition
of NFPA 90A. Jackshaft
Actuator
Damper
Sleeve
Sleeve Length (L)
6 in. max.
16 in. max.
‘A’ Dim.
(Distance from
end of sleeve to
face of damper)
458549
Tw
C
L
Dampers may be mounted either
vertically or horizontally. Blade axis
must always be horizontal.
Wall or
Floor
Retaining Angles
(See Section 4)
Sleeve
(see sections 2 & 3)
Duct
“K” side
Damper
16 in. max
6 in. max.
Type A
Access door required
on “K” side of damper.
Refer to the latest
edition of NFPA 80.
Figure 1: Combination Fire Smoke Damper Figure 2: Curtain Fire Damper
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