Setra Systems AIIR Watch User manual

Setra AIIR Watch
Installation Instructions
Setra Systems, Inc.
159 Swanson Road, Boxborough, MA 01719
800.257.3872 • www.setra.com

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The material in this document is for information purposes only and is subject to change without notice.
Setra Systems assumes no responsibility for any errors or for consequential damages that may result from
the use or misrepresentation of any of the material in this publication.
Table of Contents
1.0 Important Safety Instructions ....................................................................................... 3
2.0 Introduction ..................................................................................................................4
2.1 Intended Use..............................................................................................................4
2.2 Included and Optional Accessories.......................................................................... 4
3.0 Unboxing the unit........................................................................................................... 5
4.0 Installation...................................................................................................................... 6
4.1 AIIR Watch Unit Set Up.............................................................................................. 6
4.2 Exhaust Set Up and Isolation Room Considerations .............................................. 6
4.3 Setra LITE Set Up.....................................................................................................11
5.0 Operations....................................................................................................................12
5.1 AIIR Watch Unit Operation ...................................................................................... 12
5.2 Filter and UV-C Bulb Status Alert ...........................................................................13
5.3 Setra LITE Operation ...............................................................................................14
6.0 HEPA Filter and UV-C Bulb Replacement ...................................................................15
6.1 HEPA Filter Replacement ........................................................................................16
6.2 UV-C Bulb Replacement .........................................................................................17
7.0 Additional Resources................................................................................................... 20
7.1 Isolation Room Guidance........................................................................................ 20
7.2 Troubleshooting Tips ..............................................................................................21
7.3 Setra LITE Detailed Instructions............................................................................. 23
8.0 Returns .........................................................................................................................23
9.0 Warranty and Limitation of Liability............................................................................23
10.0 Support.......................................................................................................................24

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1.0 Important Safety Instructions
READ AND SAVE THESE SAFETY INSTRUCTIONS BEFORE USING THE AIIR WATCH.
When using electrical appliances, basic precautions should always be followed to reduce the
risk of re, electrical shock, and injury to persons, including the following:
1. Read all instructions before operating the AIIR Watch.
2. Always place the AIIR Watch on a rm, flat, and level surface.
3. Place the AIIR Watch in an area where it is not easily accessible to children.
4. DO NOT sit, stand, or place heavy objects on the AIIR Watch.
5. Do not place the AIIR Watch near any heat sources such as stoves, radiators, and heaters.
6. Do not use the AIIR Watch where combustible gases or vapors are present.
7. Do not use the AIIR Watch outdoors.
8. Before using the AIIR Watch, check the power cord for any signs of damage. If the cord is
found to be damaged, DO NOT USE and return the AIIR Watch to the manufacturer under
the warranty agreement for repair. See Section 8.0 of these Instructions for Return/
Repair guidance.
9. This appliance has a 3-prong grounded plug, to reduce the risk of shock, this plug is
intended to t only one way in a 3-prong grounded receptacle wall outlet. If the plug
does not t securely in the outlet, contact a qualied electrician. DO NOT use a 2-prong
adapter to defeat the grounded safety feature. DO NOT attempt to defeat the grounded
plug set up or modify in any way.
10. This appliance has a safety interlock switch designed to prevent inadvertent removal of
the outer panel with the unit still in operation. DO NOT attempt to defeat this interlock
safety switch and always turn OFF unit and DISCONNECT power plug from wall outlet
prior to servicing the unit.
11. DO NOT reach into the exhaust port of the unit with hands and DO NOT attempt to place
foreign objects inside the exhaust port. This could result in injury or damage to the unit.
12. To disconnect the AIIR Watch, rst turn the on/off switch to the OFF position, then grip
the plug and pull it from the wall outlet. Never pull by the cord.
13. A loose t between the AC power outlet (receptacle) and plug may cause overheating and
a distortion of the plug. Contact a qualied electrician to replace loose or worn outlets.
14. DO NOT run power cord under carpets and do not cover with throw rugs. Arrange cord
such that it will not be tripped over.
15. Always turn the AIIR Watch controls to the OFF position and unplug from the wall outlet
when not in operation or while being serviced or cleaned.
16. Never tilt or attempt to move the AIIR Watch while it is operating. Be sure to UNPLUG the
AIIR Watch before moving it.
17. The AIIR Watch requires regular replacement of the HEPA lter and UV-C bulbs during
its useful life. Refer to the HEPA Filter and UV-C Bulb Replacement sections of these
Instructions. Never clean nor service the AIIR Watch in any manner other than as
instructed in this manual.
18. WARNING: Skin or eye damage may result from directly viewing the light produced by
the lamp in the AIIR Watch. Always disconnect power before re-lamping or servicing the
UV-C bulbs or any other part of the AIIR Watch. Replace UV-C bulbs with a Setra non-
ozone UV-C bulb, ordered from Setra Systems. The UV-C bulbs are designed specically
for this AIIR Watch product.
19. DO NOT direct exhaust flow directly at individuals, walls, or furniture.

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2.0 Introduction
The Setra AIIR Watch is the versatile solution for creating safer spaces through increased
clean air circulation. Exhaust de-contaminated air out of a space, create negative pressure for
isolation, and incorporate comprehensive air purication with the Setra AIIR Watch.
The Setra AIIR Watch Negative Pressure Air Quality Module is quiet and compact. It can
be easily brought into and installed in rooms to turn them into negative isolation spaces to
prevent contaminated air from escaping into areas outside the isolation space.
The Setra AIIR Watch can also be ordered as a comprehensive air purication solution to
recirculate puried air and increase air circulation.
2.1 Environment
The Setra AIIR Watch is designed to be used in various air sterilization scenarios. The unit can
generate negative pressure in properly sealed and sized spaces, by pulling the air into the unit
and exhausting it outside of the sealed space. The unit sterilizes the air via HEPA ltration and
UV-C light to provide safe exhaust air that is then removed from the space using the included
exhaust accessories. The exhaust process enables the creation of a negative pressure space.
A second application is the sterilization of the air within a space. Air is taken into the unit,
sterilized and then returned to the space, acting as an air purier. This application does not
create a negative isolation room but rather sterilizes the air in that space or extended areas
while also increasing air circulation.
2.2 Included and Optional Accessories
The Setra AIIR Watch, when ordered for use as a Negative Pressure Air Quality Module under
part number AIIR06AA will include the following items:
1. AIIR Watch Unit
2. Flexible Exhaust Hose with Two Worm-Gear Clamps
3. Telescoping Exhaust Vent Assembly
4. Setra LITE Room Pressure Monitor
5. Setra LITE Quick Mount Kit Accessories:
a. Battery pack
b. AC adapter with 6-foot cord
c. RPS Single Gang Filtered Pressure Port
d. Mounting Bracket
The Setra AIIR Watch, when ordered for use as an Air Purier under part number AIIR06NN
includes ONLY the AIIR Watch unit as none of the exhaust accessories are needed in that
scenario.
20. If you notice the indication light on the unit turns RED this indicates the UV-C bulbs are
500 operating hours away from end of life. Be sure to replace the UV-C bulbs as soon
as possible to avoid unsafe operation of the unit due to end of life UV-C bulbs. Contact
the manufacturer for proper replacement UV-C bulbs and review Section 6.2 of these
Instructions for replacement instructions.
The sealed UV bulbs contain a small amount of mercury. Dispose of these items at
household hazardous waste collection sites only. If the UV bulb breaks, do not vacuum or
handle with your bare hands.
WARNING: To reduce the risk of re or electric shock, DO NOT use the AIIR WATCH with any
solid speed control device.

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3.0 Unboxing the Unit
The Setra AIIR Watch comes assembled and ready to use after removal of the packaging and
screwing in th UV bulbs. The AIIR Watch unit weighs 55 pounds and it is recommended that 2
people are used to remove the unit from the box as shown in the images below.
1. Open the box top.
2. Remove black foam insert.
3. Grasp the unit while still in the polybag by the top, lift unit straight up and set the unit onto
the floor. When placing the unit onto the floor, be aware that the unit has 4 wheels at its
base with 2 locking casters. Remember to bend with knees, not back.
4. Unfasten the top of the polybag and pull downward off of the unit.
5. Lift the unit out of the polybag and set it on the floor.
6. Remove the black shipping foam from the two side inlet grills.
7. The top of the unit needs to be removed to dispose of the inner packaging. Unscrew and
remove the four white thumbscrews from the outer panel. Remove the top panel section
by lifting it straight up off the unit.
8. Remove the four white shipping blocks by sliding them towards the middle of the unit and
lifting them up.
9. Unclasp and remove the lter box lid, shown below (insert image).
10. Remove the HEPA lter for ease of access to the UV bulbs. Remove UV bulbs from their
boxes, handling only by the white packaging to protect bulb life.
11. Insert and screw the rst bulb in to one of the provided sockets inside the lter box. Repeat
with the second bulb. Verify tightness by grasping the ceramic base of the bulb to tighten.
Be cautious no to over-tighten bulbs.
12. Remove the white foam insert from both bulbs by sliding upward.
13. Replace the HEPA lter as shown below with BLUE side facing forward.
14. Replace and secure the lter box lid. Replace the top of the unit and secure with the four
thumbscrews. The AIIR Watch unit is now ready for operation.

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4.0 Installation
4.1 AIIR Watch Unit Set Up
The AIIR Watch arrives assembled and once removed from the box it can be moved to the
desired location via the wheels on the unit. Be sure to install AIIR Watch in a dry, indoor
location. The unit will be powered via its 120 VAC power cord (6 ft length) so be sure to locate
the unit close enough to a power outlet. To prevent movement when unit is in desired location,
place locking casters into “locked” position by pressing down on the levers as shown.
4.2 Exhaust Set Up and Isolation Room Considerations
There are multiple scenarios available for the exhaust set up from the AIIR Watch Unit. The
unit is provided with flexible exhaust hose, worm-gear clamps, and telescoping vent for
exhausting out a standard window.
Place a worm-gear clamp onto one end of the flexible duct and slide the flexible duct onto
the exhaust port of the unit. Tighten the clamp using a flat-bladed screwdriver or nut driver.

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Figure 1. Inside view of window vent. Flexible duct is
connected to this end.
Caution: DO NOT reach into the exhaust port of the unit with hands and DO NOT attempt to
place foreign objects inside the exhaust port. This could result in injury or damage to the unit.
The three exhaust scenario options are described below:
1. Exhausting out a standard window with the provided accessories.
a. Open the window and place the telescoping vent assembly into place with external
cowling facing downward for weather protection.
i. Dimensions of the vent are:
• Height: 10 inches
• Total Depth: 5 – 3/8 inches
• Panel Depth (part held in place by window): 1 – 1/8 inches
• Length (adjustable): 24 to 36 inches

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Figure 2. Outside view of window vent. Be sure to position the opening downwards to prevent
debris/rain from entering.
b. Extend the wings of the telescoping vent assembly until the vent assembly lls the
window opening. Appropriate steps should be taken to seal the vent assembly into the
window and to ensure the window has no leaks around its periphery.
c. Place a worm-gear clamp onto the existing end of the flexible duct and slide the flexible
duct onto the exhaust port of the vent assembly. Tighten the clamp using a flat-bladed
screwdriver or nut driver.

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d. If exhausting out a window is desired, but the space has non-standard windows – e.g.
casement windows – the Setra AIIR Watch flexible exhaust hose can be used with other
window vent adapters. Non-standard window vent adapters are commercially available
for use with other items that need to exhaust out a window, like an air conditioning unit.

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2. The vent assembly can also be used in place of a commercial ceiling tile, exhausting treated
air into the space above the ceiling. The telescoping vent assembly will t into many ceiling
tile set ups. Note: the remaining gap in the ceiling tile space is then lled by cutting the
existing ceiling tile to the appropriate size and re-tting into that gap. The exhaust hose is
then connected to the vent assembly in the same manner as the window scenario.
Caution: For isolation room applications, the room must be sealed of all leaks from floor to
ceiling including door gasketing, light xture air leaks, ceiling tiles and any windows.
Competing air streams such as the presence of air conditioning vents or forced hot air vents
must be accounted for by dampening or other means as to not signicantly interfere with the
performance of the unit in pulling the room to a negative pressure. Any un-powered return
vents in the room not being used by the AIIR Watch should be sealed OFF as the AIIR Watch
unit itself is now acting as the HVAC return for the room.
If connecting the exhaust of the AIIR Watch to an existing HVAC return or building exit duct,
this duct should be under powered flow. Extended lengths of exhaust from the unit without
augmented flow assist will degrade the ability of the unit to pull the room negative.
The performance of the AIIR Watch has been tested in controlled and sealed-room conditions
using a telescoping window vent (pictured here) and 6 feet of flexible ducting connected using
worm-gear clamps on each connection.
3. The exhaust hose can also be connected directly into the existing HVAC system exhaust. It
is recommended to contact a local HVAC professional for custom HVAC installations.

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4.3 Setra LITE Set Up
The Setra AIIR Watch, when ordered under part number AIIR06AA will
include the Setra LITE Room Pressure Monitor. This is a stand-alone
room monitor to be mounted outside of the pressurized space. The Setra
LITE Room Pressure Monitor is not attached to or a part of the Setra AIIR
Watch unit. Setra Lite is about the size of a standard light switch and
just as simple to install. It ts in a single-gang US electrical box and is
powered by 24VAC or 24VDC. As an additional installation option, the included Quick Mount kit
can be used to mount the unit via a single hook with the bracket and then power the unit via a
standard power outlet with the included power adapter.
Pressure Pickup Port
The Setra LITE monitor is mounted outside the pressurized space and a
Pressure Pickup Port (RPS) is mounted inside the pressurized space. The
RPS also ts in a single-gang electrical box and is connected to the Setra
LITE monitor via 1/8 in. ID silicon tubing (supplied by the installer). The tubing
is connected on one end directly to the port at the rear of the monitor outside
the pressurized space and connected at the other end to the rear face of the RPS at the barbed
tting. Be sure to locate the Pressure Pick Up Port at least 6 ft away from any other HVAC/ Air
Vents in the room. If other air flows in the room are located too close to the Pressure Pick Up
Port it will interfere with the accuracy of the Setra LITE Room Pressure Monitor measurement.
Power
The Setra LITE monitor can be powered in one of two ways: (1)
via the included power adapter plugged into a standard outlet
(if mounting with the Quick Mount kit bracket) or (2) via 24
VAC or 24 VDC wiring run to the unit if mounting in a single
gang box. The back of Setra LITE has a 3-pin terminal block used to connect power via the 2
pins on the right when looking at the rear of the unit. Connect the 24 VDC (+/- 10%) or 24 VAC
(18-32 VDC operational), 50-60 Hz lines to the two right terminals (shown) typically black (B)
and red (R) wire.

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5.0 Operation
5.1 AIIR Watch Unit Operation
After having completed removal of the unit from its packaging, according to this installation
guide, continue with the instructions below to begin operation of the unit:
1. Plug the unit into a 120 VAC grounded electrical receptacle.
2. Verify all four outer housing thumbscrews are in place and hand tight.
3. Turn the unit ON using the power switch located on the upper rear of the unit.
4. The unit should power up and flow should begin.
5. The lter alert on the unit will start automatically and should show a GREEN light
during operation.
Note: Do not attempt to remove the top cover while the unit is running. The unit has a built-in
safety feature so that the top panel cover cannot be removed while the unit is operating. The
4 white thumbscrews need to be fully removed in order to remove the white panel cover from
the unit. The white thumbscrew on the back-left side (when facing the front of the unit) of the
panel is connected to a safety switch. If that screw is loosened while the unit is ON then the
unit will automatically switch OFF. If removing the top panel cover be sure the unit is switched
OFF and unplugged.
Power Switch
Power Cord
Housing Cover
Thumbscrews
(Both Sides)

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5.2 Filter and UV-C Bulb Status Alert
The lter alert light ring located on the AIIR Watch unit will provide visual indication of the
HEPA Filter and UV-C Bulb status while the unit is powered on. During normal operation the
light ring on the AIIR Watch will glow green.
The lter alert light ring is monitoring the cleanliness of the HEPA lter via pressure drop
across the lter. The lter alert will glow yellow when the lter is becoming clogged to allow
for time to coordinate lter replacement. Upon replacement of the clogged lter, the alert ring
will automatically return to green.
The alert light ring is also set up to monitor the life of the two UV-C bulbs inside the unit. When
the UV-C bulbs begin to reach the end of their useful life, the alert ring will turn red. Once the
light ring turns red there are approximately 500 hours remaining in the useful life of the bulbs,
allowing for time to coordinate replacement of both UV-C bulbs. Upon replacement of both
bulbs, simply press the face of the alert light ring below the Setra logo, that will restart the
UV-C bulb life timer and automatically return the light ring to green.
Filter Alert
Light Ring
Push here
to Restart
Timer

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5.3 Setra LITE Operation
The Setra AIIR Watch, when ordered under part number AIIR06AA will
include the Setra LITE Room Pressure Monitor. This section of the
instructions applies to installations that include the Setra LITE Room
Pressure Monitor which is a stand-alone monitor separate from the
Setra AIIR Watch unit. Once installed and powered on, the Setra Lite can
be congured via the 3 buttons located below the LCD display on the
circuit board. To remove the front lens for access to the conguration
buttons, simply grab on the left and right side edges and pull straight away from the wall. The
conguration menu can be accessed by holding the LEFT button for 3 seconds.
Various options can be adjusted via the conguration screens, use the RIGHT button (“”) to
navigate to the next screen and the LEFT button (“”) to navigate to the previous screen and
eventually exit the conguration menu.
To change a setting, navigate to the desired setting screen, and press and hold the RIGHT
button(“”). The screen text should flash 3 times, indicating ability to adjust the setting. Use
the LEFT (“”) and MIDDLE (““) buttons to adjust the selected setting. When nished, press
the RIGHT button (“”) to save the setting. The screen text should flash 3 times to indicate
return to the main conguration selection screens.
Be sure to use the “Room” screen to select “NEG” for your negatively pressurized room. Then
use the “Alarm Limits” screen to select your desired alarm limit – this is the pressure that
the Setra Lite ring will turn from green to red to indicate the space is no longer negatively
pressurized. When conguration is completed, simply snap the front lens back in place and
the unit will resume normal operation.

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6.0 HEPA Filter and UV-C Bulb Replacements
When the lter alert located on the front face of the AIIR Watch glows YELLOW, it is time to
replace the HEPA lter inside the unit. When the light ring glows RED, it is time to replace the
two UV-C bulbs inside the unit. In order to replace these parts, the white outer panel of the AIIR
Watch needs to be removed.
Caution: When performing replacements, the top outer panel of the unit will need to be
removed. Ensure the unit is turned OFF and unplugged. DO NOT attempt to adjust or repair
any other part of the AIIR Watch unit, other than the HEPA lter and UV-C bulbs as described
in these instructions.
1. Turn OFF the unit via the power switch.
2. Disconnect the power cord from the wall receptacle.
3. Unscrew and remove the 4 white thumbscrews from the outer panel.
4. Remove the outer panel section by lifting it straight up and setting it aside.
Thumb Screws
(Both Sides)

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6.1 HEPA Filter Replacement
Once the outer panel is removed, the inside of the unit is exposed and ready for HEPA lter
replacement. Use only a Setra True HEPA lter (Replacement Part Number = 380415), ordered
from Setra Systems. The HEPA lter is designed specically for this AIIR Watch product.
Caution: User should ALWAYS wear disposable gloves when handling the HEPA lter during
replacement.
1. The HEPA lter is inside of a Filter Box, which can be opened via the 2 clasps on either side
of the box, shown below.
2. Remove the top cover from the lter box and set cover aside.
3. Lift the lter straight up and out of the lter box and place lter into a bag for disposal.

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6.2 UV-C Bulb Replacement
Once the outer panel is removed, the inside of the unit is exposed and ready for UV-C bulb
replacement. Use only a Setra non-ozone UV-C bulb (Replacement Part Number = 380416),
ordered from Setra Systems. The UV-C bulbs are designed specically for this AIIR Watch
product.
Caution: User should ALWAYS wear gloves when handling the UV-C bulbs during replacement.
Handling a new UV-C bulb without gloves can transfer oils from the hand onto the bulb which
could reduce its service life.
Caution: Always turn OFF and unplug the unit before replacing UV-C Bulbs.
4. Replace with the Setra True HEPA lter (Replacement Part Number = 380415). Note the
orientation of the lter as shown below. The blue face of the lter is placed towards the
front of the AIIR Watch unit. Slide the lter straight down into the lter box using the guiding
panels to place the lter in the center of the lter box.
5. Place the lter box cover back on top of the lter box, then engage and close both clasps to
complete lter replacement.
1. The UV-C bulbs are inside of the Filter Box, which can be opened via the 2 clasps on either
side of the box, shown below.

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2. Access to the bulbs may be easier if the HEPA lter is removed. The lter should be lifted
straight up and out of the lter box and placed in a bag to safely set aside while UV-C bulbs
are being replaced.

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3. To remove a UV-C bulb, grasp the bulb with gloved hand and unscrew from the bulb socket
as shown below. Remove both UV-C bulbs and safely discard.
Note: The sealed UV bulbs contain a small amount of mercury. Dispose of these items at
household hazardous waste collection sites only. If the UV bulb breaks, do not vacuum
or handle with your bare hands
4. Replace with 2 new Setra UV-C bulbs by screwing the bulbs into the bulb sockets as shown
below. Do not over-tighten the bulbs.
Caution: User should ALWAYS wear gloves when handling the UV-C bulbs during
replacement. Handling a new UV-C bulb without gloves can transfer oils from the hand
onto the bulb which could reduce its service life.

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5. Return the HEPA lter into place by sliding it straight down into the lter box using the
guiding panels to place the lter in the center of the lter box. Ensure that the blue face is
placed towards the front of the AIIR Watch unit.
6. Place the lter box cover back on top of the lter box, then engage and close both clasps to
complete UV-C bulb replacement.
7.0 Additional Resources
7.1 Isolation Room Guidance
When creating a Negative Pressure Isolation Space using the Setra AIIR Watch there are
several factors that could impact the pressure in the space. Refer to Section 4.2 Exhaust
Set Up and Isolation Room Considerations of this document for instructions on running
the exhaust hose from the Setra AIIR Watch to the exhaust location and for room air flow
considerations. Included in this section are additional tips and considerations for setting up a
Negative Pressure Isolation Space.
If forced AC or forced hot air is used, these competing incoming airflows will need to be
adjusted to a flow rate below 350 CFM which is the flow rate at which the AIIR Watch is
removing air to create negative pressure.
Also consider, if your exhaust tubing is long, e.g. 25 ft or more, this will reduce the CFM
strength of the AIIR Watch unit.
Consider all the places that air could leak into the space when looking to achieve negative
pressure. These could include spaces around doors, light xtures, windows, unused vents,
ceiling tiles. These areas can be easily covered/sealed with commercially available products
(e.g. door draft stoppers).
Monitoring the negative pressure with the Setra LITE will help provide a constant reading of
the pressure achieved in the room.