Install Instructions

42
IOM - HZH/HZV Series
Table 8a: Humidistat/Dehumidistat Logic & DXM (2.1, 2.2., 2.3) DIP Settings
Sensor 2.1 2.2 2.3 Logic Reheat (ON) - H Reheat (OFF) - H
Humidistat
OFF OFF OFF Reverse 0 VAC 24 VAC
Dehumidistat
OFF ON OFF Standard 24 VAC 0 VAC
1
Cooling input takes priority over dehumidify input.
2
DXM is programmed to ignore the H demand when the unit is in heating mode.
3
N/A for single stage units; Full load operation for dual capacity units.
4
ON/OFF = Either ON or OFF.
Mode
Input Output
O G Y1 Y2
3
H O G Y1 Y2
3
Reheat
No Demand
ON/OFF OFF OFF OFF OFF ON/OFF OFF OFF OFF OFF
Fan Only
ON/OFF ON OFF OFF OFF ON/OFF ON OFF OFF OFF
Cooling 1st Stage
ON ON ON OFF OFF ON ON ON OFF OFF
Cooling 2nd Stage
ON ON ON ON OFF ON ON ON ON OFF
Cooling & Dehumidistat
1
ON ON ON ON/OFF ON ON ON ON ON/OFF OFF
Dehumidistat Only
ON/OFF OFF OFF OFF ON ON ON ON ON ON
Heating 1st Stage
OFF ON ON OFF OFF OFF ON ON OFF OFF
Heating 2nd Stage
OFF ON ON ON OFF OFF ON ON ON OFF
Heating & Dehumidistat
2
OFF ON ON ON/OFF ON OFF ON ON ON/OFF OFF
Table 8b: ClimaDry II Operating Modes
ClimaDry II Modulating Reheat Option