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
filters. Thanks to the Filter Life Monitor, the user does not have to guess when filters need to be replaced or replace
them at fixed intervals (which rarely correspond to the actual amount of use). The Filter Life Monitor keeps track of
the most important factors affecting the life of the individual filters. The Filter Life Monitor display shows the
remaining life of each individual filter at any given time at the selected fan speed.
1.
To reach the Filter Life Monitor Menu from the main display win dow, press the
Menu
key once. The remaining life of the PreMax filter will appear.
2.
Press the
p
key to view the remaining life of the other filters in the system.
3.
The remaining life of the filter is expressed in hours of operation at the current
speed setting. Filter Life will adjust whenever the fan speed is changed. If the
filter is beyond its useful life, a negative number will be displayed.
How the Filter Life Monitor Works
The basis for calculating the remaining filter life is the already elapsed operation time at the set fan speed. This input
is compared with an internal memory bank which contains infor mation about the different filters’ lives under specific
conditions of use.
The Filter Life Monitor makes a calculation of the remaining filter life, taking into account not only past use of the
system, but also likely future use. As reference for future use, the Filter Life Monitor uses the fan speed which is set
at the time.
The relationship between the current fan speed and the remaining filter life displayed can be expressed as follows:
•
The higher the current fan speed setting, the shorter the displayed remaining filter life.
7. Filter Life Reset
Allows the resetting of the filter life counter after replacing a filter.
8. Airflow Units
Allows to switch the airflow units between cfm (cubic feet per minute)
and m
3
/h (cubic meters per hour).
9. Language
Allows to switch the display language.
10. Current Model
Allows to update the control panel for an upgrade from a HealthPro
to a HealthPro Plus model.
11. Service Access
This menu is designed for factory access only.
14
Chapter 4
– Using the Control Panel
