Greenheck Vektor-MH, Vektor-MD, and Vektor-MS (464652) - Manual (Page 5)

Roof Curb and Mounting Details
Refer to stand-alone Vektor Roof Curb Assembly
Instruction found on greenheck.com within the
Laboratory Exhaust section. Chose applicable product
model.
The figures illustrates three common methods used to
install Vektor systems. Methods used to attach a Vektor
unit are dependent on local codes, roof construction
design and roof construction materials. Consult an
architect or structural engineer for proper means of
attachment.
NOTE
Steel, concrete or wood roof support is per structural
engineer and in accordance with load requirements
and applicable building codes.
Wood
WOODEN STRUCTURAL SUPPORT
(BY OTHERS, SEE NOTE ABOVE)
Greenheck Roof Curb
Install 3/8 inch (9.525 mm) SS lag or thru-bolt with
1 inch (25.4 mm) O.D. washer
2.5 inch (63.5 mm) maximum spacing from curb corners
4.5 inch (114.3 mm) maximum bolt spacing
3.5 inch (88.9 mm) minimum tread engagement,
not including tapered tip
2 inch
(50.8 mm) minimum edge distance,
centered in flange
Pre-drill holes 40-60% of lag diameter
ALL HARDWARE BY OTHERS
Steel
Concrete
STEEL STRUCTURAL SUPPORT
(BY OTHERS, SEE NOTE ABOVE)
Continuous weld or stitch weld.
Minimum 6 inch
(152.4 mm) stitch weld by
3.25 inch (82.5 mm) spacing minimum.
Minimum 6 inch (152.4 mm) weld on each corner.
OR
Install 5/16 inch (7.9375 mm) 24 Dril-Flex® Self-Drilling
Tapping Screws. 3/16 inch (4.7625 mm) minimum thread
engagement into A36 steel, centered in flange.
4.5 inch
(114.3 mm) spacing
5/8 inch (15.875 mm) minimum edge distance
ALL HARDWARE BY OTHERS
Greenheck Roof Curb
CONCRETE STRUCTURAL SUPPORT
(BY OTHERS, SEE NOTE ABOVE)
Install 3/8 inch (9.525 mm) SS power wedge bolts
2.5 inch (63.5 mm) maximum spacing from curb corners
4.5 inch (114.3 mm) maximum bolt spacing
3.5 inch (88.9 mm) minimum embedment
4.5 inch (114.3 mm) minimum edge
distance centered in flange
ALL HARDWARE BY OTHERS
Greenheck Roof Curb
Vektor-MS Assembly View - Direct Drive
Belt and direct drive units share similar system
components and assembly configuration.
Bypass Damper
Actuator Access Door
Weatherhood
with Birdscreen
Isolation Damper
Blower Housing
Access Door
Access Panel
Bolted / Gasketed
(all sides)
Isolation Damper
Actuator Cover
Panel
Lifting
Lugs
Blower Housing
SAVVE Nozzle
Bypass Air Plenum
Roof Curb or
Structural Support
5 Laboratory Exhaust Systems
®