Advanced Microprocessor Controls Setup

Select Options

The following table lists choices on the Select Options menu. These should match the options installed with your unit and should not need to change during normal operation.

Table 3

Select options

 

 

 

 

 

Option

Selection

 

 

 

Heating

 

Yes or No

 

 

 

Humidifier

 

Yes or No

 

 

Dehumidifier

Yes or No

 

 

Humidifier Pan

Small or Large

 

 

Hot Gas Reheat

Yes or No

 

 

Heat Stages*

2 or 3

 

 

Dehumidification Stages

1 or 2

 

 

 

*If heat stage is set to 2 on a chilled water unit, the reheat 3 output is energized on a call for dehumidification.

Calibrate Sensors

The temperature and humidity sensors can be calibrated by selecting this menu item. “Sensor” shows the actual sensor reading or raw reading. “Calibrated” shows the sensor reading after the calibration offset has been added. The temperature sensor can be calibrated ±5 degrees Fahrenheit and the humidity sensor can be calibrated ±10% RH. When calibrating the humidity sensor, the value shown will always be % RH, even though absolute humidity control may be selected. If absolute humidity control is selected, the Normal Status Display will display the adjusted reading and may not agree with the relative humidity reading displayed while in calibration.

Show DIP Switches

The DIP switch settings can be reviewed from the display panel. Changing the DIP switches requires opening the upper panel for access to the DIP switches on the microprocessor control board.

NOTE

Power must be cycled off, then on from the unit disconnect switch for the control system to update the DIP switch settings (except for switch 8).

Table 4

DIP switch settings

 

 

 

 

DIP

 

 

Switch

 

 

Number

OFF

ON

1

DX Compressor Cool

Chilled Water

 

 

 

2

Electric/Hot Gas Reheat

Hot Water Reheat

 

 

 

3

2 Step DX

4 Step DX

 

 

 

4

No GLYCOOL

GLYCOOL

 

 

 

5

No Dual Cooling

Dual Cooling

 

 

 

6

Not Used

Not Used

 

 

 

7

Delayed Reheat

Dehumidification with Normal Reheat

 

 

 

These selections should match options installed on your unit and should not need to change during normal operation. Switches 1 through 6 are self-explanatory. Switch 7 is described in more detail below. DIP switch 8, not shown above, enables the password feature when set to ON and disables the password feature if set to OFF.

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Emerson DE, VH, VE, DH manual Select Options, Calibrate Sensors, Show DIP Switches, Select options, DIP switch settings
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VE, DH, VH, DE specifications

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