Dehumidification Mode; Economizer Mode - Emerson 810-1600 Installation And Operation Manual

IN4 = 0-10V (Used for a Remote Humidity sensor)
IN5 = Digital (used for a Fan proof input)
Although the input can accept up to 10V voltage, the IN4 has been adapted for a 0-5V sensor.
So, = 0%RH and 5V = 100%RH.
OFF
LOCAL
REMOTE
Table 3-12 - Input In State
INPUT INx OFFSET
INPUT VALUE (INx)
CONTROL TEMPERATURE
INPUT WEIGHT IN1
Table 3-13 - Input In State

3.8.4. Dehumidification Mode

When DEHUMIDIFICATION MODE is set to ON, if the current humidity measure
is equal or higher than the DEHUMIDIFICATION RH SETPOINT, the AUX output
relay is activated. If the current humidity measure is lower than the 
DEHUMIDIFICATION RH SETPOINT, the AUX output relay is deactivated.
When the DEHUMIDIFICATION MODE is set to OFF, the AUX output relay is 
always deactivated.
NOTE: This parameter is set through network and is not accessible on the display
of the thermostat.

3.8.5. Economizer Mode

The ECONOMIZER mode is used to cool the room with fresh outdoor air instead of
air cooled by the compressor when possible to save energy.
Advanced Settings
INPUT INx STATE
The input is not used.
The thermostat updates the INPUT VALUE (INx) with the value provided by the
corresponding local INx terminal.
The network updates the INPUT VALUE (INx) with the value provided by Modbus.
INPUT INx STATE
Offset added to the input terminal when the INx STATE is LOCAL.
When the INx STATE is REMOTE, the OFFSET is not used.
In LOCAL state, this register is the corresponding terminal INx value
with the applied offset.
In REMOTE state, this register is the value written by the Modbus
network.
CONTROL TEMPERATURE Modbus register is updated according to
a relationship between the thermostat internal temperature and the
INPUT VALUE (IN1). The formula used to get the value is WEIGHT x
IN1 + (1-WEIGHT) x Internal. This register is used by the thermostat
algorithm (stage, economizer, display).
Value used in the CONTROL TEMPERATURE calculation.
Operation • 29