Installation Guide
7 
8.  After contact information is entered, you will be directed back to the Main Menu.  
Figure 7: AirFilterSentry User Home Page 
9.  Select “FILTERSCAN WiFi Units” from the Home Page, then select “Add FILTERSCAN WiFi”. 
10.  Follow the procedure in Step 6 to add additional monitors. 
11.  If you need to change any information you’ve entered for any monitor, select “FILTERSCAN 
WiFi Units” from the Home Page, then click on “Edit FILTERSCAN WiFi”. 
12.  From the drop-down, select Location and Device for the unit to edit.  
13.  Make the necessary changes and click on Update. 
14.  Once all of your Monitors have been signed up, proceed to installation and connecting your 
monitor(s) to your WiFi router, after which you may begin viewing the online status reports 
available at www.cleanalertwifi.com. 
NOTE:  If you will be using a corporate network to connect the monitor to the Internet, contact 
your network administrator prior to enabling the “Manual Pairing” steps in the Connecting 
to a Wireless Router Without a WPS Button section. Company policy may prohibit the 
use of web servers for security reasons. CleanAlert is not responsible for the use of, nor 
makes any claims as to the security of the web server interface over your network. The 
use of the web server is the responsibility of the end user. 
FILTERSCAN WiFi Home Air Filter Monitor 
Installation 
The CleanAlert FILTERSCAN WiFi Home Air Filter Monitor, Model FS-245, MUST be installed 
on the RETURN side plenum, or duct (if your HVAC system has no plenum), NOT the SUPPLY side 
(see the installation diagrams in the APPENDIX). The monitor can be installed, either upstream of, 
downstream of, or differentially across the air filter (using the optional tubing kit Model CA-4DP). The 
Monitor must be mounted downstream or differentially across the filter if you have a VAV system and 
it is set to the constant torque mode. 
To help determine which installation position is possible with your HVAC system, refer to Figures 16 
through 20, which illustrate various installation configurations, as well as the proper setting of the 
Upstream/Downstream switch. 
WARNING!  Ensure that the HVAC system blower motor/fan is OFF until told otherwise! 
WARNING!  Do NOT insert anything into the Sensor Tube! Doing so will result in sensor 
damage and malfunction.  
1.  Insure you have recorded the Serial Number(s) and MAC address(es) as specified previously 
in this document. 
FILTERSCAN WiFi 
Units 
My Account 
Product 
Registration 
Go To 
CleanAlert.com 
Filter Status 
Send SMS/ 
Email Test 










