Dwyer UHH7 Series Sah Smart Air Hood Instruction Manual
- May 15, 2024
- Dwyer
Table of Contents
Dwyer UHH7 Series Sah Smart Air Hood
Specifications
- Model: TE-SAH-SWV2
- Optional handheld device: UHH7
- Manufacturer: DWYER INSTRUMENTS, LLC
- Phone: 219-879-8000
- Website: www.dwyer-inst.com
- Fax: 219-872-9057
- Email: info@dwyermail.com
Product Usage Instructions
Setup:
Upon opening the application, the initial screen will display application
preferences.
Connecting to the Hood:
To connect to a hood, press the Hood Settings & Connect button on the title
screen. If connection is lost, select Hood Connection in the slide-out drawer
from the readings screen. Access application preferences by pressing the three
lines at the top left and selecting Preferences.
Zeroing the Hood:
To zero the hood, place it in the desired orientation with no airflow. For
ceiling diffusers, follow specific steps. For side-wall diffusers, follow
alternative steps. Press the Zero button on the home screen and confirm
zeroing after verifying hood position. Return to the home screen after
completion.
FAQ:
-
Q: How do I connect to a hood?
A: Press the Hood Settings & Connect button or select Hood Connection from the slide-out drawer if connection is lost. -
Q: How do I zero the hood?
A: Place the hood in the desired orientation with no airflow, then press the Zero button on the home screen and follow on-screen instructions to complete zeroing.
Series SAH SMART Air Hood® Balancing Instrument -SMART Air Hood® App Software Android® Devices
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.
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.
SETUP
To begin, ensure the latest version of the SMART Air Hood® App is installed
from the Google Play™ store, on a supported device. Supported devices include
the Dwyer Series UHH6 or newer, and smart devices with Android® firmware
version 8.0 and above. If using an iOS® device, please see Bulletin TE-SAH-
IOS.
APPLICATION PREFERENCES
- When the application is first opened, the following screen will be shown.
- To access the application preferences, press the three lines at the top left of the page and select “Preferences”. The following screen will appear.
- After the initial startup, the app will automatically open to the home screen shown below. The Preferences can also be accessed from the home screen by pressing the three lines at the top left of the page and selecting “Preferences”.
CONNECTING TO THE HOOD
- When you press the “Hood Settings & Connect” button on the title screen the app will start searching for a hood right away. You would select “Hood Connection” in the slide out drawer if you lost connection and need to reconnect to a hood after being in the readings screen.
As the app discovers hoods, they will be added to the list below the search status bar. 
- Select the hood that is to be paired and confirm your selection by clicking “YES” when prompted to do so.
- You have to select “Dwyer_SAH-XXXXXX” in the screenshot below to actually connect to the hood.
- Once connected, press the “X” in the top left corner to return to the home screen. Note: Press the information button “ 1 ” on the hood connection screen to obtain general hood information such as calibration date, serial number, etc.
- To disconnect from the current hood, press the hood name on hood connection screen. The disconnect dialog comes up, which allows for the hood to be disconnected. If “No” is selected, the dialog will be closed without any other action being taken. If “Yes” is selected, the hood will be disconnected, but still paired.
ZEROING THE HOOD
In order for the hood to be zeroed, place it in the desired orientation in
which is going to be utilized. Make sure that the hood is blocked so that no
air is flowing through it.
Press the “Zero” button at the top of the home screen. After the correct hood
position is verified, select “Zero The Hood” to begin the zeroing process.
When the
zeroing process is complete, it will show the following screen and the reading
will be 0. Note: If there is too much air flow, the zero button will be
disabled. 
SELECTING THE DIFFUSER
To select a diffuser, press the diffuser tab above the “Log This Reading”
button.
Select the “Standard” accuracy level to take readings at the industry standard
accuracy level.
Select the “High” accuracy tab to take high accuracy readings. The neck size
and diffuser type must be considered for high accuracy readings which results
in a larger diffuser selection list.
If the desired diffuser is not available in the diffuser library, the K-factor
can be entered under the “Manual” tab.
MANUAL K-FACTOR
In the case that diffuser being used is not in the downloadable library, but
the K-factor of the diffuser is known, the K-factor can be manually entered
into the application. While on the application home screen, tap on the
diffuser to open the Diffuser list.
Select “Manual” under the accuracy level selection. Define it as a Register
for supply flow or Return for return flow and press on the K-Factor field to
enter the K-factor of the diffuser. Once completed, select “SAVE” in the top
right corner to exit to the main menu.
HOOD INFORMATION
As mentioned in the hood connection menu, general hood information can be
obtained by selecting the “ 1 ” next to the desired hood.
Once the “ 1 ” button is selected, the information below will appear.
To return
to the main menu, select the “X” in the top left corner of the “About the
hood” screen and again in the “Hood Connection” screen.
LOGGING
Log files can be generated from the main home screen. To begin logging, press
the “LOG THIS READING” towards the bottom of the screen. 
Once the reading has been logged,
the reading will be indicated in the bottom right corner.
To view the logged readings, press the log button in the bottom right corner.
In the
reading log screen, the individual logs can be named by clicking below the
“Register name” heading. To delete individual logs, select the “X”
corresponding to the log that is to be deleted.
Logs can be exported by selecting the “EXPORT” button in the bottom left
corner. To delete all logs, select the “CLEAR ALL” button in the top right
corner and confirm the action by selecting “YES” on the pop up. 
PREDICTIVE BALANCING
NOTICE Predictive balancing is available on Android applications only
To enter predictive balancing, press the menu button in the top left corner of
the home screen (three horizontal bars) and select “PREDICTIVE BALANCING”.
BRANCHES
Once Predictive Balancing is opened, you will be prompted to create a new
branch or to import an existing branch if there is not currently any branches
set up.
- To create a new branch, select “CREATE NEW BRANCH” and enter the name and location of the branch when prompted to do so. Once the branch has been named, registers can either be imported or added manually.
- To manually add registers, select “ADD REGISTERS”. From the register screen, the name, target CFM, and diffuser type can be entered.
Once all of the necessary registers have been entered or imported, the branch will be added to the “Current Branches” list.
Next, click on the desired branch name. This will bring up a dialog with the available actions for that branch. If the branch has been previously started, then the following menu will be shown. - “Edit” will bring up the “Add Edit Branch” screen. Note: “Restart” will appear instead of “Edit” if balancing has already begun. “Restart” will clear any balancing data for that branch and allow you to restart balancing from the beginning.
- “Delete” will bring up a dialog asking to confirm the deletion.
- “Export Branch” will bring up a file dialog.
- Once “Save” is selected, if the branch is deleted, the branch can be brought back by adding a branch and selecting “Import”.
BRANCHES MENU
- Clicking the 3 horizontal lines at the top of the page will open the Branches Menu.
- Pressing “Sort Branches” will bring up a dialog that contains the options to sort branches by different methods.
- Clicking the “+” symbol in the bottom right corner will allow you to add a new branch.
“Import” will allow you to select a file to choose which branch to load.
Clicking the branch name loads that branch and adds it to the list of
branches. Once complete, the app will be return to the Branches main page with
the new branch added to the list.
“New Branch” will allow you to set up an additional branch by manually
entering in the registers.
ADD REGISTERS
-
If “New Branch” was selected, registers will have to be added.
-
“Import Registers” will open a dialog with a list of exported register lists that you can choose from.
-
“Add Register” will bring up the Add Edit Register screen with nothing filled in except for the default diffuser. As in Meter Mode, if the desired diffuser is not shown, select the manual diffuser to create a diffuser with a known K-Factor.
-
Clicking either the Name or Target field will bring up a keyboard allowing values to be entered. Note that the register name must be unique. If a register name is entered that is already in the list, the following dialog will be shown.
-
Both the name and the target fields must be filled in to create a register.
-
For more options on the Add/Edit Resisters screen, press the three horizontal bars in the top left corner to open the menu.
-
“Clear Registers” will erase all the registers in the list for the selected branch.
-
“Export Registers” will allow the registers to be saved to the mobile device. Note that the same dialog will come up asking to overwrite the file if a name is chosen that is already in use.
-
“Set Keys” will bring up a dialog that allows the selection of which registers are candidates to be the key (checked registers can be the key and unchecked cannot be the key). At least one register must be selected.
BALANCING PROCEDURE
- Once the desired branches have been created, the balancing can be started by selecting “Begin Balancing”.
- After confirming all dampers are opened, the first step of the balancing procedure is to take an initial sweep of all registers within the selected branch .
- Red indicates that a reading still needs to be taken from the register. After selecting the register to measure, its button will turn from red to white, indicating that it is the active register.
Click register button again to store the reading, at which point it will change from white to green, indicating that a value has been stored for that register. 
- Repeat this procedure until all of the registers have been measured. Clicking on a register again allows for a retaking of that register if needed.
- If the slide out menu is opened, the following choices will be shown.
- “Pause Balancing” will pause the balancing project and return to the home screen.
- “Enter Manual Data” allows data to be entered manually for a register that cannot be measured. To manually enter data, select a register (changing the button from red to white) and then select “Enter Manual Data” to enter the flow value.
- Once all of the registers have been measured, press and hold the continue button at the bottom until the predictive balancing screen appears.
- As shown below, the app will direct you to the register to measure:
- Press and hold the OK button to bring up the dialog box asking to confirm that the hood is correctly placed.
- If “Manual Data” is selected, a dialog box will come up asking for the value for the reading of the register.
- If “Manual Data” is selected, a dialog box will come up asking for the value for the reading of the register. After the manual data is entered, another dialog will appear. This manual entry dialog asks for the flow of the register after adjusting (if it can be adjusted). The dialog includes the target flow that the register needs to reach to balance the system.
- Press and hold the OK button to bring up the dialog box asking to confirm that the hood is correctly placed.
- Once the hood is in place, the application will then instruct you to adjust the damper to the target value. Press and hold the NEXT button to bring up the next screen which will guide you to the next register to measure and adjust. The last register measured will be the key register after which the adjust system will come up requesting to adjust the branch’s flow source to the given target.
- After adjusting all the registers, the Final Reading screen will appear. This screen’s purpose is to gather the final readings to calculate the error ratio of the balancing process which is displayed on the final screen.
- Once all of the registers are measured, Press and hold the NEXT button, to bring up the Final Results screen. This screen displays how accurate the balancing method was.
- Sliding a finger from the left edge of the screen towards the right, clicking the menu button, or clicking the 3 lines at the top of the page will open the Final Results Menu.
- “Retake Readings” will return to the Final Readings screen so that one or more of the register readings can be retaken.
- Back in the “Branches” screen, the context menu for the branch will now have “View Results”. The “View Results” option allows you to go back to the results screen for that branch to see the results of that balance.
- This button will produce a report in the format of a CSV file that can be exported and opened in an application like Excel. The report contains all the results on the results screen.
FCC/INDUSTRY CANADA NOTICE
NOTICE This device complies with Part 15 of the FCC rules. Operation is subject to the following two conditions:
- This device may not cause harmful interference, and
- this device must accept any interference received, including interference that may cause undesired operation.
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between equipment and receiver
- Connect the equipment to an outlet on a circuit different from that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.
NOTICE
This device complies with Industry Canada license-exempt RSS standard(s).
Operation is subject to the following two conditions:
- This device may not cause harmful interference;
- This device must accept any interference received, including interference that may cause undesired operation of the device.
CAUTION Pursuant to FCC 15.21 of the FCC rules, changes or modifications not expressly approved by Dwyer Instruments, LLC may void the user’s authority to operate the equipment.
RF NOTICE
NOTICE This product complies with FCC OED Bulletin 65 and Industry Canada’s RSS-102 radiation exposure limits set forth for an uncontrolled environment.
NOTICE
This Class B digital apparatus complies with Canadian ICES-003.
CAUTION
The antenna used for this transmitter must maintain a separation of at
least 20 cm from all persons and must not be co-located or operating in
conjunction with any other antenna or transmitter.
MAINTENANCE/REPAIR
Upon final installation of the Series SAH, no routine maintenance is required.
The Series SAH is not field serviceable and is not possible to repair the
unit. Field repair should not be attempted and may void warranty.
WARRANTY/RETURN
Refer to “Terms and Conditions of Sale” in our catalog and on our website. Contact customer service to receive a Return Goods 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 Google® is a registered
trademark of Google LLC Google Play™ is a trademark of Google LLC
iOS® is a registered trademark of Cisco Technology, Inc.
©Copyright 2022 Dwyer Instruments, LLC
Printed in U.S.A. 12/23
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
References
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