DIP Switches. Vertiv Liebert Deluxe System 3, Refrigerator DH, DE, DH, VH, VE

Advanced Microprocessor with Graphics Control Setup

4.8.4 DIP Switches

The DIP switch settings can be reviewed from the display panel. Changing the DIP switches requires opening the front 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).

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

Table 11 DIP switch settings

Number

1

4

5

2

3

6

7

OFF

Compressor Cool

Electric/Hot Gas Reheat

2 Step

No GLYCOOL

No Dual Cooling

Not Used

Delayed Reheat

Chilled Water

Hot Water Reheat

4 Step

ON

GLYCOOL

Dual Cooling

Not Used

Dehumidification with Normal Reheat

Dehumidification with Normal or Delayed Reheat

Dehumidification with normal reheat allows for operating both compressors and reheats simultaneously. It is very important that electrical service to the unit be sized and wired for this option if selected.

!

CAUTION

The result of electrical service to the unit not being sized properly for this option could be nuisance trips of the building circuit breakers (or fuses) or, in extreme cases, damage to building wiring.

With delayed reheat selected, the reheats are prevented from turning on when dehumidifying with both compressors until the point at which 100% heating is called for. At this time, the compressors are turned off until the reheats bring the temperature back up to the point at which the reheats are turned off.

4.9

Main Menu (AG)—Date and Time

The current date and time is available through the display. This feature allows the date and time to be read or changed and is accessed by selecting “DATE AND TIME” from the Main Menu. The “DATE

AND TIME” is used by the control for recording the Alarm History and plotting graphs.

NOTE

The clock uses the 24 hour system (For Example: 17:00 would be 5:00 PM).

The date and time are backed up by a battery.

4.10 Main Menu (AG)—Plot Graphs

Selecting Plot Graphs will step to the following menu:

• TEMPERATURE PLOT

• HUMIDITY PLOT

• ANALOG SENSOR #1 PLOT

• ANALOG SENSOR #2 PLOT

• ANALOG SENSOR #3 PLOT

• ANALOG SENSOR #4 PLOT

• MODIFY PLOT SCALES

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