Installation Guide
22 
  At the recommended setting in the center of travel. This equates to 
the doubling of the initial differential pressure to cause a clog alert. 
  If you want to waste energy, or think your filter is not dirty enough 
when a clog alert occurs at the Recommended setting, you may turn 
the Service Filter knob CCW toward “Less Often”. This increases the 
differential pressure needed to cause a clog alert. Results? A more 
dirty filter, more energy usage, and decreased IAQ. 
  If you want to save more energy at the expense of higher air filter 
costs, or think your filter is too dirty when a clog alert occurs at the 
Recommended setting, you may turn the Service Filter knob CW 
toward “More Often”. This decreases the differential pressure needed 
to cause a clog alert. Results? A cleaner filter, higher air filter costs, 
less energy usage, and increased IAQ. 
  Overall, the Service Filter knob should be to set at the Recommended 
setting for the best balance between wasted energy and higher air 
filter costs. 
  Why am I not seeing the FILTERSCAN on the list of connected devices 
on my router? 
  The FILTERSCAN WiFi Home Air Filter Monitor connects to your 
wireless router for about two seconds approximately every seven 
hours. The rest of the time, the FILTERSCAN’s WiFi transmitter is 
turned off to conserve energy. So, you would have to be viewing your 
“connected devices” exactly during the two-second time period to 
“see” the FILTERSCAN on the list of connected devices. Nearly 
impossible. 
Model FS-245-C  How is the conduit mechanically connected to the FILTERSCAN WiFi 
Home Air Filter Monitor? 
  There is a conduit connector knock-out located on the lower side of 
the monitor housing. 
  What voltage is acceptable to power the FILTERSCAN WiFi Home Air 
Filter Monitor via the conduit? 
  Typically 24V AC/DC, although an input voltage as low as 15V DC is 
acceptable.  
Model FS-245-B  Do I have to install batteries if I power the Monitor from the optional AC 
  Adapter? 
  No. 
  Can I utilize both the AC Adapter and batteries for backup? 
  Yes, you can install batteries even though you also have an AC 
adapter installed. Such power backup is unnecessary however 
because the monitor’s non-volatile memory stores all operating 
parameters in the event of a power failure.   
AirFilterSentry  Can I transfer ownership of my FILTERSCAN WiFi Home Air Filter 
Monitor to another person? 
  Yes, please contact Customer service at 888-414-FLOW (3569) for 
assistance. For the monitor to be transferred, have the Serial Number 
and the new owner’s information available. 










