4.4.2 Filter Life Monitor
The IQAir® system is equipped with an electronic Filter Life Monitor that calculates the remaining life of the sys tem’s
lters. Thanks to the Filter Life Monitor, the user does not have to guess when lters need to be replaced or replace
them at xed intervals (which rarely correspond to the actual amount of use). The Filter Life Monitor watches over
the most important factors affecting the life of the individual lters. The Filter Life Monitor display shows the
remaining life of each individual lters at any given time.
1. To reach the Filter Life Monitor display from the main display win dow,
press the Menu key once. The remaining life of the filter 1 will appear.
2. Press the p key to view the remaining life of the next lter in the system.
3. The remaining life of the lters is expressed in hours of operation at the
current speed setting and the programmed lter load indices.
How the Filter Life Monitor Works
The basis for the calculation of the remaining lter life is the already elapsed operation time at the set fan speeds and
lter load indices during that period. This input is compared with an internal memory bank which contains infor -
mation about the different lters’ lives under specic conditions of use.
The Filter Life Monitor makes a calculation of the remaining lter life, taking into account not only past use of the
system, but also likely future use. As reference for future use, the lter life monitor uses the fan speed and the lter
load indices which are programmed at the time.
The relationship between the current fan speed, the current lter load indices and the remaining lter life displayed
can be expressed as follows:
• The higher the current fan speed setting, the shorter the displayed remaining lter life.
• The higher the current lter load index setting, the shorter the remaining lter life displayed for the affected lter.
7. Filter Life Reset
Allows the resetting of the lter life counter after replacing a lter element.
8. Airow Units
Allows to switch the airow units between cfm (cubic feet per minute)
and m
3
/h (cubic meters per hour).
9. Language
Allows the modication of the display language.
10. Filter Load Index Setting
Allows the modication of the air pollution index, so the system can
calculate the remaining lter life, taking pollution intensity into account.
11. Service Access
This menu is designed for factory access only.
14
Chapter 4 – Using the Control Panel
