Dwyer A-SAH-BK Smart Air Hood Balancing Installation Guide
- September 5, 2024
- Dwyer
Table of Contents
A-SAH-BK Smart Air Hood Balancing
Specifications
Manufacturer: Dwyer Instruments, LLC
Phone: 219-879-8000
Fax: 219-872-9057
Website: www.dwyer-inst.com
Email: info@dwyermail.com
Product Usage Instructions
Preparing the Adaptor Hood
-
Remove the adaptor hood from the packaging and place it on a
table or onto the SAH unit. -
Place the SAH unit on the floor or elevated work area with the
top facing up. -
Hold the canvas hood in place over the SAH with the Dwyer
trademark facing you. -
Stretch the outer cord hoop over the SAH top and place it into
the outer top groove just below the top rubber seal. -
Fold the canvas hood inside out over the SAH, exposing the
inner cord loop and place it inside the SAH unit. -
Stretch the top cord loop of the canvas hood onto the upper
frame, aligning corners with sewn seams of the hood. -
Place all spring poles inside the SAH unit for easy access
during final assembly. -
Lift the top frame using both hands diagonally to fully open
the adapter hood. -
Install spring poles into corner pockets of lower frame and
support frame brackets. -
Complete the balancing process with the SAH unit, adapter base
kit, and canvas hood in place.
FAQ
Q: How do I know which pieces are needed for each hood
size?
A: Refer to the diagrams provided in the manual
to determine which parts are required for assembling each hood
adapter size.
Q: How do I ensure the canvas hood is properly aligned with the
SAH unit?
A: Pay special attention to aligning the sewn
corner seams of the adapter hood with the corners of the SAH unit
body while placing and stretching the hood over the SAH.
Q: What is the final step after installing all spring
poles?
A: Once all spring poles are installed, ensure
that the unit is stable and balanced before releasing it and
proceeding with any further adjustments or operations.
Bulletin TE-SAH-AH
Series SAH SMART Air Hood® Balancing Instrument – Adapter Hoods
®
Specifications – Installation and Operating Instructions
The SMART AIR HOOD® (SAH) Balancing Instrument is the most accurate and easy
to operate air flow hood on the market today. The low profile design allows
balancers to work in occupied spaces (bathroom stalls, MRI machines, cubicles,
tables/chairs, etc.) and maneuver through doorways easier. By using the
included 12 foot hood pole and wireless communications to a mobile device, one
operator can balance a branch in less time than traditional balancing teams.
Besides being lighter than most traditional capture hoods, the ergonomic
design makes the technician exude less energy as the SAH has a lighter,
balanced design. The rugged polypropylene base hood features Quad Flow Design
Technology for controlling air flow and minimizing back pressure, which yields
superior measurement accuracy. The Wi-Fi protocol back to the user’s Android®
or iOS® device gives the user real-time feedback, as they may be up to 200
yards (183 m) from the hood which saves the technician from unnecessarily
going up and down their ladder multiple times to cut or open the dampers to
balance the system.
adapter hoods. Available adaptor hood sizes, sold separately, include a 1 ft x 4 ft (0.3 m x 1.2 m) model A-SAH-14S, a 2 ft x 4 ft (0.6 m x 1.2 m) model A -SAH-24S, a 3 ft x 3 ft (0.9 m x 0.9 m) model A-SAH-33S and a 1 ft x 5 ft (0.3 m x 1.5 m) model A-SAH-15S, and a 4 ft x 4 ft (1.2 m x 1.2 m) model A-SAH-44S. The 1 ft x 4 ft (0.3 m x 1.2 m) model A-SAH-14S, a 2 ft x 4 ft (0.6 m x 1.2 m) model A-SAH-24S are stand alone single item adaptors as purchased. The 3 ft x 3 ft (0.9 m x 0.9 m) model A-SAH-33S, a 1 ft x 5 ft (0.3 m x 1.5 m) model A -SAH-15S, and a 4 ft x 4 ft (1.2 m x 1.2 m) model A-SAH-44S adaptors are used with and require the adapter base kit (A-SAH-BK). It will be necessary to use the stationary pole adapter attachment. Install this according to the instructions on page 3 of Bulletin TE-SAH.
The SMART AIR HOOD® Application Software reduces the number of steps in the air flow balancing process using Predictive Balancing. Predictive Balancing is a method of predicting the optimal flow set point for each register and the order in which they should be adjusted.
The SMART Air Hood® balancing instrument comes standard with a 2 ft x 2 ft (0.6 m x 0.6 m) opening but can also be used with other diffuser / register sizes using various
DWYER INSTRUMENTS, LLC
P.O. BOX 373 · MICHIGAN CITY, INDIANA 46360, U.S.A.
Phone: 219-879-8000 Fax: 219-872-9057
www.dwyer-inst.com e-mail: info@dwyermail.com
1 x 4 AND 2 x 4 SAH ADAPTOR HOOD INSTRUCTIONS Preparing the 1 x 4 and 2 x 4 SAH Adaptor Hood – Remove the adaptor hood from the packaging and place on a table or onto the SAH unit as shown in Figure 1.
Canvas hood adapter (variety of sizes)
SAH adapter base kit Model A-SAH-BK
Figure 1
Attaching the Adaptor to the SAH – When installing the adaptor onto the SAH,
the 2´ x 2´ bottom frame of the adaptor nests over the top rim and gasket of
the SAH unit. Pull out the four locking slides, one on each corner of the
frame, until the slide stops (Figure 2). Push down on the corner of the
adaptor frame to slightly compress the SAH gasket then push the locking slide
into the SAH top frame until it stops (Figure 2). The adaptor hood is now
attached to the SAH.
Figure 2
Opening the Adaptor Hood – Move the fabric of the adaptor hood outward away
from the hinges to avoid pinching it in the hinges. Unfold one side at a time
to open the upper frame of the adaptor hood (Figure 3). Make sure that the
fabric is clear of the hinge area. Release the hook and loop strips holding
the supports together (Figure 4). Lift the upper frame by rotating the
supports out toward the bottom frame. Lift on the support handles compressing
the spring and move the spring pin into the center support nests then release
the handle spring tension allowing the spring pins to nest into the supports.
(Figure 5). The system is now ready for use (Figure 6).
Figure 3
Figure 4
Figure 5
Figure 6 Closing the Adaptor Hood – Reverse the steps for opening the adaptor
hood securing the hood and loop straps to hold the supports together, moving
the fabric out away from the hinges before folding the adaptor into the SAH
unit. The adaptor hood can be left secured to and transported with the SAH or
removed and stored somewhere else. Removing the Adaptor Hood From the SAH –
The adaptor hood can be removed while open or after it is closed. Reverse the
steps for attaching the adaptor hood. Pull out the four locking slides until
they stop then remove the adaptor hood from the SAH. The assembly of the 3 ft
x 3 ft (0.9 m x 0.9 m) model A-SAH-33S, a 1 ft x 5 ft (0.3 m x 1.5 m) model A
-SAH-15S, and a 4 ft x 4 ft (1.2 m x 1.2 m) model A-SAH-44S adapter hoods
begins with the adapter base kit A-SAH-BK. Only one adapter base kit is
needed, as it can be used with any of the three adapter hood sizes that
require it. To start, lay out the adapter base kit as shown in the photo. To
assemble the adapter base kit and the adapter hoods to the base, please follow
the steps in a sequential order. The number references will be a guide for the
right adapter parts to use.
F
E (x4)
A (x2)
D (x4) C (x2)
B (x2)
The adapter frame kit contains the following parts to build and install the 1´ x 4´ (0.3 m x 1.2 m), 1´ x 5´ (0.3 m x 1.5 m), 2´ x 4´ (0.6 m x 1.2 m) , and 3´ x 3´ (0.9 m x 0.9 m) hood adapters:
A = 18 x 6 corner bracket long side B = 18 x 6 corner bracket short side C = 24 long extension
D = 12 long extension E = Spring support poles F = Bottom support frame
See the below diagrams for which parts are needed to assemble each hood adapter size.
A
C
B
1´ X 5´
B
C
A
D
B
A
1´ x 5´ (0.3 m x 1.5 m) adapter hood
A
B
C+D
4´ X 4´
C+D
C
3´ X 3´
C
B
A
3´ x 3´ (0.9 m x 0.9 m) adapter hood
B
A
D
4´ x 4´ (1.2 m x 1.2 m) adapter hood
ASSEMBLY To use the SAH with different diffuser sizes other than 2´ x 2´ (0.6 m x 0.6 m), use the following instructions for how to attach adapter hoods.
5. Place the lower 2´ x 2´ adapter frame into the SAH over the top of the inner cord loop skirt trapping the cord inside the SAH and loosely close the hook and loop straps over the adapter frame to hold it in place.
1. Place the SAH on the floor or elevated work area with the top of the unit facing up as shown in the photo below.
6. Assemble the required upper frame system that matches the adapter hood
choice. Details for which pieces are needed for each hood size are on page 2.
Starting with two pieces that fit together, loosen the knob on the first
piece. Slide the second piece so the grooves fit around the knob on the first
piece. Tighten the knob to hold in place. Continue until entire upper frame is
assembled.
2. Hold the canvas hood in place by its top over the SAH with the Dwyer
trademark facing you and place the adapter hood into the main SAH body
aligning the sewn corner seams of the adapter hood to be approximately in line
with the corner of the SAH unit body to prepare for assembling it to the SAH
body as shown below.
3. Stretch the outer cord hoop (the one without the hook and loop straps)
over the SAH top and place the cord into the outer top groove just below the
top rubber seal. Be sure to locate the sewn seams of the adapter at the corner
of the SAH. (This can be adjusted after the cord is stretched into place at
this time. It is not necessary to tuck the entire cord into the SAH slot in
the straight sections.)
7. Place the upper frame system on top of the SAH unit positioning the frame
for proper assembly as shown below. For all sizes (except 3´ x 3´), the long
sides should align with the logo sides of the canvas hood.
4. Fold the canvas hood inside out over the SAH, exposing the inner cord loop
and place that cord loop inside the SAH unit. Pay special attention to the
corners. Open the fabric hook and loop straps if they are closed.
8. Stretch the top cord loop of the canvas hood onto the upper frame,
aligning the corners of the frame with the sewn seams of the canvas hood. Once
they are aligned, press the cord into the groove all the way around the frame.
9. Place all spring poles inside the SAH unit for easy access for final
assembly.
10. While holding one spring pole at the end in one hand, lift the top frame
using both hands opposite and diagonal from each other until the adapter hood
is fully open. Place the spring pole into a bottom corner pocket of the lower
frame, compress the pole with your thumb and while still holding the upper
frame with your fingers, slide the top of the pole into the appropriate
support frame bracket pocket.
13. The SAH unit with the adapter base kit and canvas hood can now be used to complete the balancing process.
11. Pick up another spring pole and install it in the position opposite diagonal from the first one. Install all spring poles by first placing one end into a corner pocket of the lower frame. Compress the spring pole by pushing downward onto the lower frame until the spring pole top can be placed into the top frame support pocket. The unit will now be stable and balanced enough to release it and place the 2 remaining spring poles in place with the same procedure.
MAINTENANCE
Some simple routine maintenance after each use will ensure that the instrument
will function correctly for many years. · Remove any moisture droplets using a
clean, absorbent lint-free cloth/paper towel
before storing the unit. · Remove all batteries if the unit is to be stored
for an extended period of time. · Always store and transport the unit
carefully. Store in dry conditions. · DO NOT immerse the hood in water. · DO
NOT use abrasive cleaning products on the hood. The hood can be wiped clean
with a damp lint-free cloth. · DO NOT use abrasive cleaning products on the
quad flow sensing grids, which may
block or damage the grid. The grid may be CAREFULLY wiped clean with a lint-
free cloth. Ensure the air entry holes of the quad flow sensing grids are not
contaminated with moisture. · Check periodically for damage or any visible
cracks. · Take care to not damage or obscure the air entry holes of the quad
flow sensing grids. This can seriously affect the measurements obtained.
Diffuser adapter hood fabric can be wiped clean with a damp cloth, if necessary, and moisture droplets dried with an absorbent lint-free cloth/paper. Periodically, wash in cool water using a mild detergent. Drip dry, ensuring it cannot become caught in any sharp objects.
The fabric used is impermeable, tough, and very resistant under normal use. In the event that the fabric becomes worn or torn, replace the fabric hood immediately. A damaged hood will seriously affect the measurements taken.
12. Re-tuck the upper cord loop into the top frame if it came free during the assembly. At this time, you can tuck the outer lower cord into the SAH unit along the straight sections. It is not necessary that this be done for the cord to stay in place or for the system to perform properly.
Anti-static solution can be applied to the instrument by using a clean, lint-
free cloth and carefully rubbing it over the instrument. Note: This is
normally only necessary when working in low humidity conditions.
WARRANTY/RETURN Refer to “Terms and Conditions of Sale” in our catalog and on
our website. Contact returns@dwyermail.com to receive a Return Materials
Authorization number before shipping the product back for repair. Be sure to
include a brief description of the problem plus any additional application
notes.
Android® is a registered trademark of Google LLC iOS® is a registered trademark of Cisco Technology, Inc.
©Copyright 2023 Dwyer Instruments, LLC
Printed in U.S.A. 12/23
FR# 444357-40 Rev. 4
DWYER INSTRUMENTS, LLC
P.O. BOX 373 · MICHIGAN CITY, INDIANA 46360, U.S.A.
Phone: 219-879-8000 Fax: 219-872-9057
www.dwyer-inst.com e-mail: info@dwyermail.com
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