Dwyer SAH-22 Series Sah Smart Air Hood Instruction Manual

Dwyer SAH-22 Series Sah Smart Air Hood

Dimension

Important Information

The Series SAH SMART Air Hood® Balancing Instrument is the most accurate and easy to operate air flow hood on the market. By using the included hood stand and wireless communications to the handheld, a single 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 Series SAH easy to maneuver, with less physical stress. The rugged polypropylene base hood features patented Quad Flow Design Technology for controlling air flow and minimizing back pressure, which yields superior measurement accuracy. The Wi-Fi direct communication gives reliable communication with a distance of up to 200 yards (183 m) between the hood and the handheld test instrument. The SMART Air Hood® balancing instrument includes the SMART Air Hood® application software which reduces the number of steps in the air flow balancing process using Predictive Balancing’s Express Balance mode. Predictive Balancing is a method of predicting the optimal flow set point for each register and the order in which they should be adjusted.

INCLUDED WITH THE SAH KITS

• Handheld test instrument preloaded with SMART Air Hood® App
• 3´ (0.9 m) extendable pole
• Handheld quick release pole adaptor kit
• SAH roller travel case with instrument available foam inserts
• Charging cables for SAH and handheld
• Lithium ion battery (not included in international versions)
• Installation and operating manual
• NIST traceable certificate

SPECIFICATIONS

SAH SPECIFICATIONS
Service : Air.
Units : CFM, m3/h, l/s.
Volume Flow Ranges : Supply: 40 to 2000 CFM (68 to 3398 m3/h) (19 to 944 l/s);
Exhaust : 80 to 2000 CFM (136 to 3398 m3/h) (38 to 944 l/s).
Accuracy > 40 CFM: ±3% of reading ±7 CFM (11.9 m3/hr) (3.3 l/s).
Resolution : 1 CFM (1.7 m³/h) (.5 l/s).
Power Requirements : 3.6 V NCR18650B MH12210 lithium ion battery, included, user replaceable or (4) 1.5 V AA alkaline batteries, not included, user replaceable.
Housing Material : Polypropylene.
Weight : 5.75 lb (2.6 kg).
Compliance : CE, FCC, IC, RCM (-AU model only).
HANDHELD SPECIFICATIONS
Operating System : SMART Air Hood® application software only available with factory supplied test instrument.
Wireless Protocol : Wi-Fi direct low energy wireless technology.
Response Time : 1 s.

MODEL CHART

Model| Description
SAH-22
A-SAH-12P SAH-22HC| SMART Air Hood® balancing instrument with 2´ x 2´ (0.6 m x 0.6 m) opening 4.5´ to 12´ (1.4 m x 3.7 m) extendable pole (Required for operation)
SMART Air Hood® balancing instrument with 2´ x 2´ (0.6 m x 0.6 m) opening, with hard travel case
ACCESSORIES

Model| Description
A-SAH-12P
A-SAH-14S
A-SAH-15S
A-SAH-24S
A-SAH-33S
A-SAH-44S
A-SAH-BK
A-SAH-CK
A-SAH-HC
A-SAH-PLUG
A-SAH-SC| 4.5´ to 12´ (1.4 m x 3.7 m) extendable pole
Canvas hood 1´ x 4´ (0.3 m x 1.2 m)
Canvas hood, 1´ x 5´ (0.3 m x 1.5 m)
Canvas hood, 2´ x 4´ (0.6 m x 1.2 m)
Canvas hood, 3´ x 3´ (0.9 m x 0.9 m)
Canvas hood attachment, 4´ X 4´, (1.2 m x 1.2 m)
SAH adaptor base kit for canvas hood
Spare calibration kit with four quad flow sensing grids and
sensor module
Hard carrying case for SAH
Low flow plug
Replacement SMART Air Hood® travel case

FEATURE OUTLINES

• SAH Hood

• Handheld Instrument

INTRODUCTION

Do not use the handheld instrument/hood unit for liquid or gas mixtures other than air. No responsibility will be taken by Dwyer Instruments, LLC for any resulting damage to the unit or to the operator if it is used with corrosive or dangerous or explosive gas mixtures. When using the handheld instrument/hood to check air flow at ceiling diffusers, make certain that you can raise and hold the unit safely during use. This instrument is not classified as flameproof or intrinsically safe; therefore, it must not be used where an explosion hazard may exist. The unit is not authorized for use on life support applications.

Note : Observe standard safety procedures when working on ladders and scaffolding.
Also, ensure the unit does not become caught in moving machinery or on sharp objects.

• If stored under conditions outside normal operating range, allow the unit to stabilize at room conditions before use.

• Owing to its size and shape, take care when carrying the assembled unit from place to place.

• Avoid people and nearby equipment.

• Avoid objects that may damage the capture hood.

• Turn the instrument off before storage or transportation and remove the batteries if storing for long periods of time.

• Avoid subjecting the quad flow sensing grids to excessive loading during use or assembly. Any air flow other than through the calibrated sensing holes, such as any hair-line cracks, will seriously affect the sensitivity.
  A damaged quad flow sensing grid must be replaced. It cannot be repaired.

• Do not disassemble the quad flow sensing grids from the capture hood while taking readings or balancing. The retaining structure is specifically designed to accommodate loading due to normal operation.

• Under low humidity conditions, static electric charges may be encountered. These can be avoided by applying a suitable anti-static solution.

SETUP

Battery Requirements

SAH Battery

Fire Hazard While Charging Battery Match the lithium-ion battery polarity symbols on the battery to the polarity symbols inside the battery bracket. Failure to do so may result in personal injury or property damage. The orientation of the polarity symbols on the battery must match the orientation of the label inside the SAH battery bracket (+ to +, – to -).
The positive terminal of the NCR18650B battery is also marked by a wide black band on the battery.

If a SAH-22-IN (less battery) was purchased, a 3.6 V NCR18650B lithium ion battery, or the equivalent, needs to be purchased from a local supplier and installed properly before the SMART Air Hood® Balancing Instrument can be operational.
Before beginning use with the SAH, it is suggested that the unit be charged using the included charging cable. Plug the mini-USB end of the cable into the unit’s charging port and the USB end into the charging block. Ensure that correct polarity of the battery is followed.
Handheld Instrument Battery
The handheld instrument utilizes an internal rechargeable battery. The battery symbol in the top right of the screen shows the status of the battery.
When the handheld instrument is received, it will only have a partial charge. Use the included USB charging cable and charging block to charge the unit to full battery charge before using.
When the battery is low, the battery symbol will turn red. When this occurs, use the included USB charging cable to charge the unit.

Battery Backup

Four AA batteries can be used as a backup for the lithium ion rechargeable battery, in case it loses charge during a job.

Lithium Battery Status

The LED lights on the hood change color and pattern depending on the status of the battery.

Powering the Unit

The SMART Air Hood® balancing instrument is ready to use directly out of the box.
No assembly process is required. The unit can be powered on by pushing the power button, it should turn green when turned on.

To turn off the hood, press and hold the power button until the LEDs turn off.
Power on the handheld instrument device by pushing the power button. Wait approximately 15 seconds for it to fully turn on. Swipe across the screen to unlock the unit.

To turn off the handheld, press and hold the power/sleep button and press “Power Off” when prompted on the screen.

INSTALLATION

Assembling Accessories

In order to place the hood onto a diffuser to measure air flow it needs to be mounted to one of the two provided poles.

To connect the pole to the hood, align the hole at the end of the pole with the holes in the mounting plate of the hood. Insert the provided locking pin through the holes in order to lock the pole to the hood. When inserting the locking pin, start by placing it into the alignment hole on the opposite side from the power button as illustrated below. In order to insert or remove the pin, press in the button on the end of the pin.

When using the short pole or with the SAH adapter base kit for canvas hoods, the stationary pole adapter should be used to keep the hood pole from pivoting. Place the stationary pole adapter onto the SAH and attach using the screws and wing nuts provided (below). Once secure to the SAH, insert the short pole and secure in place using the locking pin.

To attach the handheld to the pole secure the handheld locking device to the pole as shown below. Secure handheld to pole using locking attachment on the back of the handheld by inserting it into the locking device on the pole and rotating 1/4 turn.

Once the handheld is attached to the pole, the SMART Air Hood® balancing instrument is now ready for use.

For shorter ceilings it is recommended to leave the top section of the pole inserted into the pole and adjust the height with the middle section for greater stability.

OPERATION

Connecting the SMART Air Hood® Balancing Instrument to the Smart Air Hood®
Application Software
The LED lights on the hood blink in certain patterns depending on its communication with the handheld.

50% duty cycle
20% duty cycle
5% duty cycle| 50% duty cycle
20% duty cycle
5% duty cycle| Not connected
Attempting to connect
Connected

Placing the SMART Air Hood® Balancing Instrument on a Diffuser Place the hood on the diffuser and ensure that there are no leaks by visually inspecting that the hood seal completely surrounds the diffuser. Make sure to check every side and corner of the hood and verify that it is sealed onto the diffuser.

Once the hood is placed correctly, twist the pole to adjust the pole length so that it reaches the floor supporting the hood itself. If the hood is not securely in place, then re-adjust the pole length until it is free standing.

FCC/INDUSTRY CANADA NOTICE

This device complies with Part 15 of the FCC rules.
Operation is subject to the following two conditions:
(1) This device may not cause harmful interference, and (2) 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.

This device complies with Industry Canada license-exempt RSS standard(s). Operation is subject to the following two conditions:

1. This device may not cause harmful interference;
2. This device must accept any interference received, including interference that may cause undesired operation of the device.

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

This product complies with FCC OED Bulletin 65 and Industry Canada’s RSS-102 radiation exposure limits set forth for an uncontrolled environment.

This Class B digital apparatus complies with Canadian ICES-003.

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

Wired Connection

The SAH can be connected directly to the handheld test equipment using the provided mini-USB cable and micro-USB adaptor. While the SAH is connected to the handheld test equipment via USB, the Wi-Fi in the SAH is disabled. This connection method is useful when a Wi-Fi connection is unreliable or when Wi- Fi is prohibited. The Wi-Fi in the SAH is re-enabled when the USB cable is disconnected.

Airplane Mode

Airplane mode disables all wireless communication on the handheld test equipment. Airplane mode is useful when operating in an environment that restricts the use of wireless communication. When Airplane Mode is enabled, the SAH can only be used with a wired connection. To enable Airplane mode, perform the following steps.

1. Press the Home button to display the home screen.
2. Swipe down from the top of the screen to open the notification bar.
3. Swipe down from the top of the screen again to access the quick settings.
4. Locate the airplane icon labeled “Airplane Mode” (It may be required to swipe left or right to locate this setting).
5. Click the Airplane Mode icon to activate the mode and disable all wireless communication.
6. To disable Airplane Mode and enable wireless communication, repeat steps 1 through 4 above.

TROUBLESHOOTING

• Verify sensor module is plugged in
• Check for leaks in diffuser sealing tubing
• Verify SAH connection by looking at LED blinking pattern
• Verify quad flow sensing grids are fully seated and not damaged
• Verify the hood has a good seal with the diffuser/grille
• Check for any blockage in the inlets and outlets of the hood
• Check for cracks in the hood body

Reading is too high or low|

• Verify quad flow sensing grids are fully seated and not damaged
• Verify the hood has a good seal with the diffuser/grille
• Check for any blockage in the inlets and outlets of the hood
• Check for cracks in the hood body
• Check for possible damage in the rubber seal

Cannot connect to hood|

• Verify the connection is attempted within the proximity of the handheld instrument
• Restart the PredictAir™ application software
• Power cycle the hood and/or handheld instrument
• Check the battery status of both the hood and handheld instrument

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.
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.

Annual Calibration

It is recommended to have the unit calibrated annually to ensure the accuracy of the unit. For calibration purposes, all four quad flow sensing grids and the sensor module must be sent to a Dwyer authorized service facility. Contact customer service for more information.

REPAIR

The Series SAH SMART Air Hood® balancing instrument is not field serviceable and it 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 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.

Customer Support

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

• Dwyer Home

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