Emerson Liebert iCOM Manual De Usuario

There are two types of infrared humidifiers: small pan (IFS) and large pan (IFL). The operating mode 

of each is similar, however, some of the variables or timings differ.
Infrared humidifiers are started at 100% humidification request, and stopped at 0%. Infrared humid-

ifiers cannot be driven in proportional mode.

An autoflush system automatically controls a water makeup valve to maintain proper levels in the 

infrared humidifier water pan during humidifier operation. If humidification is needed and 15 hours 

have elapsed since the last time the humidifier was on, then the humidifier is not turned on until the 

valve completes an initial fill of the humidifier pan. This pre-fill is about 30 seconds for a small pan 

and 60 seconds for a large pan. The valve continues to fill and flush the pan for about 4-1/2 minutes 

for a small pan or 7-1/2 minutes for a large pan. Pan size is selected based on unit specifications and 

is preset at the factory.
During humidifier operation, with the flush rate set at the default of 150%, the valve is opened peri-

odically to add water to the pan (about 45 seconds every 7 minutes of humidifier operation for a small 

pan, or 80 seconds every 10 minutes of operation for a large pan). This adds enough water to the pan 

to cause about a third of the total water used to be flushed out of the overflow standpipe located in the 

humidifier pan. This action helps to remove solids from the pan. The flush rate is adjustable from 

110% to 500% in 10% intervals. Default is 150%. If the water quality is poor, it may be desirable to 

increase the water flushing action above the normal 150% rate. Also, if the supply water pressure is 

low, the flush rate adjustment can be increased so that sufficient water level is maintained during 

humidification. The flush rate parameter, Infrared Flush Rate (Service Menu, Options Setup), is 

adjustable from 110%-500%.
External Humidifier Control—Optional
A factory-supplied option may be provided to allow a start-stop command to be sent to the control of a 

remote-mounted humidifier.

Humidity in Last xx Hours

15 hours

15 hours

Prefill Time

30 seconds

60 seconds

Fill Time

4 minutes

7 minutes

Humidifier On Time

8 or 10 minutes

10 minutes

Flush Rate

150%

150%