APC IN ROW RD ACRD101 User's Guide download pdf (Page 22)

InRow RD 100-Series and InRow RD 200-Series User’s Guide15

Group and Unit Configuration

Viewing and Configuring Group Settings

Overview page

The Overview page, which displays by default the first time you select the Group tab, provides basic

group status information.

• Cool Setpoint—The target value for the air temperature. A Cool setpoint equal or above the

Supply Air Setpoint indicates that the group is operating normally. The Cool Setpoint should be

set a few degrees above the Supply Air Setpoint when operating in the InRow mode.

• Supply Air Setpoint—The target value for air leaving the cooling units in the group. The Supply

Air Setpoint should be set a few degrees below the Cool Setpoint to ensure that the group is

operating normally.

• Air Flow—The amount of air flow provided by the group.

• Maximum Return Air Temperature—The highest return temperature recorded in the group.

• Minimum Return Air Temperature—The lowest return temperature recorded in the group.

• Cool Output—The actual cooling output of the group.

• Cool Demand—The amount of cooling the group requires from the units to maintain the Cool

Setpoint.

Setpoints page

Use the Setpoints page to configure the temperature setpoints, capacity control mode, and fan speed

mode for the cooling group.

• Cool Setpoint—The target value for the air temperature. The Cool Setpoint value must be equal

to or greater than the Supply Air Setpoint value.

• Cool Deadband—The hysteresis value that prevents the unit from turning on and turning off too

rapidly. For a cooling unit to activate its compressor, the air temperature must exceed the Cool

Setpoint plus the Cool Deadband.

• Supply Air Setpoint—The target value for air leaving the cooling units in the group. The Supply

Air Setpoint value must be equal to or below the Cool Setpoint value.

• Capacity Control—The method the units will use to regulate the cooling demand. Discrete is

used for the Spot Cooling configuration mode only. Use Proportional for all othe configuration

modes.

– Proportional Mode—The unit modulates the fan speeds and Hot Gas Bypass Valve (HGBV)

to match the cooling output to the load demand, so the compressor turns off less frequently.

– Discrete Mode—The unit runs the fans at a set speed with the HGBV fully closed. The unit

activates the compressor when the Return Air Temperature reaches the Cool Setpoint plus the

Cool Deadband. The unit deactivates the compressor when the Return Air Temperature

reaches the Cool Setpoint.

1 2 ... 17 18 19 20 21 22 23 24 25 26 27 ... 75 76

No comments

APC IN ROW RD ACRD101 User's Guide Page 22