babcockdavis ACOUSTIMAX BSVZ User manual

©2023 Babcock-Davis, Inc.
Rev 02/2023
Direct Service Done Right
Since 1948, Nystrom has been the go-to manufacturer of specialty building products providing a wide range of floor, roof, wall,
ceiling, and stair access products that create safer, more accessible buildings. We offer 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.
Installation, Operation
+ Maintenance Manual
1
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.
ACOUSTIMAX™ SMOKE VENT
Model(s): BSVZ/BSVY
GENERAL DESCRIPTION
Acoustical smoke vents are designed to open
automatically to provide emergency smoke and heat
ventilation. Prompt venting during fire emergencies is
essential for the safe evacuation of occupants and for
effective fire-fighting conditions within a building. The
smoke vent is not intended for use as general-purpose
building ventilation devices. International Building
Code (IBC) requires smoke venting in a variety of
applications including Section 410 for stages and
platforms, Section 910 for factory and storage
occupancies.
Acoustical smoke vents are primarily used in theaters and performing arts centers because
they block the intrusion of exterior environmental noise. Acoustical smoke vents provide both
sound control and thermal performance. The SVZ has STC50/OITC 47 and ISO 140-18 Rainfall
36.7 dB sound ratings. The SVY has STC50/OITC 39 sound ratings.
The AcousticMAX sound rated series meets International Building Code IBC 1207 sound
transmission class requirements and is used in high end theater applications as well as in
building applications where condensation is a concern.
Sound transmission is tested by an independent lab accredited by the U.S. Department of
Commerce and the National Institute of Standards and Technology for conducting official
acoustical test procedures for sound transmission class (STC), Outdoor-Indoor Transmission
Class (OITC), and Sound Insulation of Building Elements (rainfall dB) according to the following
tests:
• ASTM E90 Laboratory Measurement of Airborne Sound Transmission of Building
Partitions
• ASTM E1332 Standard Classification for Determination of Outdoor-Indoor Transmission
Class
• ISO 140 Acoustics Laboratory Measurement of Sound Insulation of Building Elements

Direct Service Done Right
Since 1948, Nystrom has been the go-to manufacturer of specialty building products providing a wide range of floor, roof, wall,
ceiling, and stair access products that create safer, more accessible buildings. We offer 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.
©2023 Babcock-Davis, Inc.
Rev 02/2023
Installation & Operation + Maintenance
AcousticMAX Smoke Vent
Model(s): BSVZ/BSVY
2
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.
Introduction + Safety
Please read the complete instructions carefully before beginning any work. To ensure proper
installation and performance of the product, the following actions must be completed by the
installing contractor. Failure to do so will affect product warranty.
Transportation + Storage
oInspect all shipments and materials for missing or damaged components and hardware.
oMaterial must be stored in a clean, dry location.
Preparation
•Locate the packing slip(s) and/or shop drawings.
•Verify that all products listed on the packing slip are included in the package.
•Check the products for damage. If products are damaged, report a freight claim
immediately and leave the products in their packaging. If you sign for products without
reporting damage you waive your right to a freight claim and will be responsible for their
replacement cost.
•Read the instructions thoroughly before beginning installation.
INSTALLATION
The following is a general instruction for installing, operating and maintaining smoke vent
products. These are recommended general guidelines only. Locally accepted roofing and
sealing practices and procedures should be followed as appropriate for the different roofing
systems. This product may be installed on a flat or sloping roof. When installed on a slope up
to 7:12 pitch (30˚), the hinge side must run parallel with the slope. CAUTION: Smoke Vent
Doors Are Under Spring Pressure.
1. Ensure that the roof mounting surface is level to avoid twisting of the smoke vent base.
It is essential that the vents are installed level and square for the door to make a proper
seal. Place the smoke vent over the existing opening in the roof that has been prepared
with appropriate roofing membrane, if applicable.
a. The roof rough opening dimensions are equal to the vent dimensions as
measured from the inside curb to inside curb. For example, a 48” x 96” smoke
vent will have a rough opening of 48” by 96”.
GENERAL SAFETY PRECAUTIONS Improper selection, installation, or use can cause personal injury or property damage.
It is solely the responsibility of the user, through their own analysis, to select products suitable to the specific application
requirements, ensure proper maintenance and use as intended. Follow local, state, and federal regulations for proper
installation and operation requirements.

Direct Service Done Right
Since 1948, Nystrom has been the go-to manufacturer of specialty building products providing a wide range of floor, roof, wall,
ceiling, and stair access products that create safer, more accessible buildings. We offer 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.
©2023 Babcock-Davis, Inc.
Rev 02/2023
Installation & Operation + Maintenance
AcousticMAX Smoke Vent
Model(s): BSVZ/BSVY
3
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.
2. The smoke vent curb flange comes with two (2) types of mounting holes to
accommodate the following fastening methods:
a. Mark the predrilled 5/8” diameter holes from the mounting flange through to
the roof deck or a concrete curb. Drill roof deck or concrete curb for installation
of anchors or other fasteners (provided by others). Bolt or otherwise fasten roof
hatch curb flange to roof deck using 3/8” or 1/2” bolts with washers.
b. Mark the predrilled 3/16” diameter holes from the mounting flange through to
the roof deck, typically into a built-up wood frame curb. Fasten roof hatch curb
flange to framing using roofing nails and/or screws, recommended size #10 by 1-
1/4” long.
3. Install roofing material up to and around the roof curb and under the counterflashing
using appropriate roofing material and locally accepted processes. Ensure all joints are
full sealed to provide a weather tight seal.
4. Finally, to check operation, open the smoke vent doors by pulling the exterior manual
pull handle. Closing the doors may require two people to ensure proper latch
engagement.
OPERATION
•Vents are designed and built for years of dependable service. Smoke vents do not
require field painting. If field painted, all component parts must be masked, especially
moving parts and all labels. Field painted component parts will void the warranty.
•Latch: Positive hold rotary latches are designed to hold the covers closed.
•Gas Spring/Damper: Provides force to automatically open covers.
•Hold Open Arm: Automatic hold open arm engages to keep doors locked open when
released. Pull the red vinyl grip handle forward to disengage while safely closing the
door(s).
•Link: Fusible melt out links are replaceable (SV-KIT-LINK-165, SV-KIT-LINK-280, etc.)
Smoke vents are designed to open manually via pull handles located on the exterior and
interior of the smoke vent. The internal pull cable can be extended and rigged down to the
floor level to assist with emergency vent opening.

Direct Service Done Right
Since 1948, Nystrom has been the go-to manufacturer of specialty building products providing a wide range of floor, roof, wall,
ceiling, and stair access products that create safer, more accessible buildings. We offer 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.
©2023 Babcock-Davis, Inc.
Rev 02/2023
Installation & Operation + Maintenance
AcousticMAX Smoke Vent
Model(s): BSVZ/BSVY
4
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.
1. Smoke vents are designed to open thermally when a UL listed fusible link melts at
temperatures of 165˚F, 212˚F, 280˚F, 350˚F, 360˚F, 370˚F, 386˚F or 450˚F. Fusible
links are easily accessed from the roof for replacement, as detailed.
2. OPTION: Electrical Belimo Actuator
Smoke vents can include an option to open
electrically with a low voltage (24VDC/AC) or High
Voltage (110VAC/220VAC) at 2.5Watt signal. The
electrical option is ideal to coordinate vent opening
with a fire alarm, smoke detector, sprinkler system or
other.
Smoke vent covers are closed manually from the
exterior roof top level. Make sure to disengage the
hold open arm prior to closing the doors.
Acceptance Testing
An acceptance performance test and inspection of all vents shall be immediately conducted
following installation to establish that all operating mechanism functions properly. Vents
should be operated in accordance with the authority having jurisdiction (AHJ).
Belimo

Direct Service Done Right
Since 1948, Nystrom has been the go-to manufacturer of specialty building products providing a wide range of floor, roof, wall,
ceiling, and stair access products that create safer, more accessible buildings. We offer 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.
©2023 Babcock-Davis, Inc.
Rev 02/2023
Installation & Operation + Maintenance
AcousticMAX Smoke Vent
Model(s): BSVZ/BSVY
5
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.
Test for proper operation using one or more of the following methods.
1. Manual pull handles: Pull the manual pull handle from the exterior of the smoke vent.
Pull the internal manual pull handle if it has been routed down to the floor level.
2. Fusible link: Melt the fusible link from the inside at the smoke level using a hand-held
propane tank torch. Make sure to have replaceable fusible links on hand to reset the
latch and close the doors. An alternative method is to remove the fusible link to
simulate melting to verify that the smoke vent would indeed open.
3. Optional electrical Belimo actuator: Send an electrical signal from the fire alarm, push
button control, or other to validate electrical fire system performance.
MAINTENANCE
•Manually operate vents once a year to inspect, maintain, and replace components as
necessary.
•Inspect fusible links for evidence of corrosion, stress/strain or build up. Clean or
replace as required.
•Nonmoving parts may be cleaned with a mild soap or dishwashing detergent and
water solution.
•Gaskets should be washed with a clean, damp, lint-free cloth. Do not apply mineral
oils vinyl dressings, or other lubricants to the gasket as they can cause the gasket to
break down over time.
Fusible link ambient temperature rating
The fusible link should be specified with a temperature rating greater than the maximum
ambient exposure temperature that will be seen at the installation.
For example, an “ordinary” fusible link rated at 165 degrees F has a maximum ambient
exposure temperature rating of 100 degrees F. If this fusible link is routinely exposed to
ambient temperatures over 100 degrees F, it is liable to separate. Select a fusible link rated at
212 degrees F (or greater) for this type of application. See table below to find a fusible link
temperature range compatible with an expected or measured ambient temperature. This is
in accordance with UL guidelines.

Direct Service Done Right
Since 1948, Nystrom has been the go-to manufacturer of specialty building products providing a wide range of floor, roof, wall,
ceiling, and stair access products that create safer, more accessible buildings. We offer 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.
©2023 Babcock-Davis, Inc.
Rev 02/2023
Installation & Operation + Maintenance
AcousticMAX Smoke Vent
Model(s): BSVZ/BSVY
6
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.
If there are any questions during the installation, operation, or maintenance of smoke vents,
please call 800-547-2635 toll-free.
OVERVIEW –MANUAL WINCH OPTION
Smoke vents with manual winch remote operation provide the additional convenience of
opening and closing the smoke vents from a remote location, such as the catwalk or floor
level.
Manual Winch Operation
Open Smoke Vent with Manual Winch
1. Pull manual release cable to release the rotary latch in the smoke vent.
2. Unwind manual winch to fully open smoke vent doors.
Close Smoke Vent with Manual Winch
1. Move lever to the downward position to disengage the locking hold open arm.
2. Wind the manual winch till the vent rotary latches engage to secure covers closed.
3. Return the lever to the upward position.
Smoke vent covers also open when activated by the following methods: Reset at roof level is
required.
•Thermal: Release by heat with fusible link
•Manual at roof: Pull external manual release cable
•Optional electrical: Released by a 2.5W Belimo actuator when energized to 24V or 110V

Direct Service Done Right
Since 1948, Nystrom has been the go-to manufacturer of specialty building products providing a wide range of floor, roof, wall,
ceiling, and stair access products that create safer, more accessible buildings. We offer 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.
©2023 Babcock-Davis, Inc.
Rev 02/2023
Installation & Operation + Maintenance
AcousticMAX Smoke Vent
Model(s): BSVZ/BSVY
7
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.
Reset at Roof Level
1. Feed out a minimum of 14’ of cable at lower winch to create slack.
2. At upper winch, remove spent fusible link from the system by removing the retaining
lock nuts. Reseat the spring attached to the lever arm to the winch housing. Pull the
lever arm up, bring the two screws close enough to set the new fusible link in place and
secure with the retaining lock nuts. (Only if thermally released)
3. Flip the ratchet at upper winch up to the engaged position.
4. Wind upper winch until the cable is taught.
5. The thermal release is now reset. Vent can be winched closed by lower winch.
Installation Instructions for Manual Winch
1. Once the smoke vent has been roofed in and is fully installed the manual winch option
can be set up to operate the doors to open and close.
2. Determine the desired location for the floor level winch (shipped loose) and mount it
to a suitable structure.

Direct Service Done Right
Since 1948, Nystrom has been the go-to manufacturer of specialty building products providing a wide range of floor, roof, wall,
ceiling, and stair access products that create safer, more accessible buildings. We offer 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.
©2023 Babcock-Davis, Inc.
Rev 02/2023
Installation & Operation + 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

Direct Service Done Right
Since 1948, Nystrom has been the go-to manufacturer of specialty building products providing a wide range of floor, roof, wall,
ceiling, and stair access products that create safer, more accessible buildings. We offer 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.
©2023 Babcock-Davis, Inc.
Rev 02/2023
Installation & Operation + Maintenance
AcousticMAX Smoke Vent
Model(s): BSVZ/BSVY
9
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.
OVERVIEW
Smoke vents with linear actuators are designed to conveniently open and close smoke vents
remotely with a push button controller. The system is comprised of linear actuators (one per
cover), a control box mounted to the inside of the smoke vent curb, a 2 position (open, close)
push button station.
These smoke vents are also designed to open automatically without power in the event of a
fire emergency. Smoke vents open thermally when heat parts a fusible link and they also
open manually with both internal and external manual pull handles.
Linear Actuator Smoke Vent Modes of Operation
Open Smoke Vents
1. *Manual: Pull manual release cable (exterior or interior) to release the actuator latch
and open vents
2. *Thermal: Fusible link melts to release the actuator latch and open vents. A new link is
required.
*If smoke vent is opened manually or thermally, the linear actuator must be reset and securely
re-latched to curb. This is accomplished by electrically opening to fully extend the linear
actuator so that the rotary latch engages.
3. Electrical Open with Controller:
a. Push OPEN button on controller, continuously hold until both doors stop
moving
4. Electrical Open with signal (by others)
a. Wire a 24VDC signal from a fire alarm, smoke detector, etc. into the control box
at the smoke vent level.
Close Smoke Vent
1. Electrical Close:
a. Push CLOSE button on controller, continuously hold until door limit stops
motion.
b. Rotate the toggle switch to other door (A or B).
c. Continuously push “Close” button on controller until door limit stops motion.

Direct Service Done Right
Since 1948, Nystrom has been the go-to manufacturer of specialty building products providing a wide range of floor, roof, wall,
ceiling, and stair access products that create safer, more accessible buildings. We offer 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.
©2023 Babcock-Davis, Inc.
Rev 02/2023
Installation & Operation + Maintenance
AcousticMAX Smoke Vent
Model(s): BSVZ/BSVY
10
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.
*EMERGENCY OPERATION, releasing the actuator from the rotary latched pivot point
Input
Operation
User presses and holds the open
button.
Controller checks to ensure the open position internal limit switch for
actuator is not closed, if not the controller will drive the actuator to extend
until the user releases the open button or the open position internal limit
switch for actuator closes. Works individually for each actuator.
User presses and holds the close
button.
Controller checks to ensure the close position internal limit switch for
actuator is not closed, if not the controller will drive the actuator to collapse
until the user releases the close button or the close position internal limit
switch for actuator closes. Works individually for each actuator.
Fire alarm tie-in sends a
constant signal to the 24V relay
in control box when the fire
alarm is tripped
The controller will drive each actuator until the open position internal
limit switch for each actuator closes or until the timer finishes. Drives
both actuators simultaneously.
QUESTIONS?
For more information on installation, repair, or replacement, please contact Customer &
Sales Support at 800-547-2635 or visit babcockdavis.com
User Operation
Execution
Reset?
Open using push button station
User depresses the open button until both doors fully
open.
no
Close using push button station
User depresses the close button until both doors fully close.
no
*Open using interior manual pull
User pulls the interior manual pull handle.
yes
*Open using exterior manual pull
User pulls the exterior manual pull handle.
yes
*Thermally
Fusible link melts at listed temperature (160-520F).
yes
Open with 24V Signal (fire
alarm)
Optional signal sent from fire alarm, smoke detector, etc. by others.
no
Reset
Push and hold the Open button on the control button station
until the actuators back into the rotary latches.
n/a
Linear Actuator
Push Button Station