Liebert TM-10098 service manual Humid Set Point: 50%

iCOM Control Training and Service Manual

Note: in the above example that the control band begins at the 50% humidity set point and has a length of 4%, which is ½ of the programmed humidity proportional band value.

As the return air humidity increases, dehumidification operation is activated at 54%RH or 100% of the dehumidification control band. When the return air humidity starts to decrease, dehumidification operation is deactivated at 52%RH or 50% of the humidity proportional control band.

1 Stage Compressorized Dehumidification – With Dead Band

Humidity Set Point - (1/2 Dead Band +1/2 Proportional Band)
Humid Set Point: 50%
Proportional Band: 8%
Dead Band: 2%				Dehumidification On
50	51	52	53	54	55
DB
		Dehumidification Off
				Increasing Humidity

Note: in the above example that the control band begins at the 50% humidity set point and has a length of 5%, which is ½ of the programmed dead band value plus ½ of the programmed proportional band value.

As the return air humidity increases, dehumidification operation is activated at 55% RH or ½ of the dead band value plus 100% of the dehumidification control band. When the return air humidity starts to decrease, dehumidification operation is deactivated at 53%RH or ½ of the dead band value plus 50% of the humidity proportional control band.

2-Stage Dehumidification, Compressorized Direct Expansion (DX) Systems

The basic dehumidification control band is established at the humidity set point with the length equal to ½ of the programmed humidity proportional band value. When 2 stage dehumidification is selected, the controller works as follows.

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