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Since 1948, Nystrom has been the go-to manufacturer of specialty building products providing a wide range of floor, roof, wall,
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to
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©2023 Babcock-Davis, Inc.
Rev 02/2023
Installation & Ope Maintenance
AcousticMAX Smoke Vent
Model(s): BSVZ/BSVY
8
Great Products. Better Partners.
Babcock-Davis is a leader in roof hatches, smoke vents and safety railings for the commercial roofing market. We also manufacture architectural
access and safety-related building products for commercial structures. Babcock-Davis provides local connections through a broad distribution
network to accelerate and simplify the building process for contractors and building owners, offering hassle-free services including access to
technical experts, REVIT tools for BIM, HPDs for LEED v4, 3-part specifications and AIA-accredited continuing education courses.
3.
Rig the 1/8” manual winch cable, 1/16” HOA cable, and 1/16” manual release cable
down to the floor level winch. (
All three cables should be coiled on the interior side of
the unit
)
4.
Attach and wind the 1/8” cable taught onto the floor level winch.
See Figure A.
5.
Open the smoke vent by pulling the interior manual release (now rigged to a location
near the floor winch) and unwind the manual winch to the fully open position.
6.
Place the lever on the floor winch in the
downward position and tie the 1/16” HOA cable
to the HOA tie-off point of the lever. Ensure the
cable is taught.
(IMPORTANT: this cable is required to
disengage the hold open arms, if it is not
installed prior to closing the smoke vent with
the manual winch the unit will be damaged
during the operation, UL 793 requires the
inclusion of the hold open arms as the doors
are required to lock into the open position.)
7.
To ensure the HOA cable was correctly fastened, with the lever in the downward
position, wind the winch slowly to begin closing the doors. If the doors close the HOA
cable has been properly secured. If the doors only close slightly and the force required
to wind the winch increases greatly, the HOA cable has not been secured tight enough
and the operator should cease winding as continued operation could result in damage
to the unit. If the HOA cable has not been secured tight enough, detach and reattach it
tighter than it was previously.
8.
Once the HOA cable has been confirmed to be securely fashioned the smoke vent can
be winched closed and the installation of the Manual Winch option is complete.
Figure A
–
Cable Termination for Floor Winch
