Liebert TM-10098 service manual Standby & Cascade, iCOM Controls Training and Service Manual

iCOM Controls Training and Service Manual

The Lead/ Lag function may be used in the either the No Teamwork Mode, in Teamwork 1 Mode and in Teamwork 2 Mode. One or more units can be defined as lag (standby), the normal status of the lag (standby) unit(s) is off.

The lag or standby function can be performed as a daily rotation (setting the time), weekly rotation (setting the day of the week and time) or as a monthly rotation. The units will rotate based on the programmed number of units:

Example A: if the rotation is set in the “Rotate by 1” parameter, the standby units will rotate from 1 to 2 or 2 to 3 or 3 to 4 or 4 to1 in a basic 4 unit configuration.

Example B: if the rotation is set in the “Rotate by 2” parameter, the standby units will rotate from 1 - 2 to 3 - 4 or 3 - 4 to 1 - 2 in a basic 4 unit configuration.

Standby & Cascade

This program function will activate the lag (standby) unit(s) when an active alarm in a running unit is detected. This program parameter will also provide for unit staging. With an increase or decrease in either the temperature and/ or humidity conditions is sensed in the operating units the additional standby unit(s) will be activated to aid in the control of the space requirements.

The Cascade function operates in Teamwork Mode 1 only. The Cascaded units are not part of the system temperature and humidity average.

Settings are:
Cascade Active	Yes/ No
Cascade Cool/ Heat and Humid./ Dehumid.	Yes/ No
Cascade for Cooling and Heating	Temp
Cascade for Cooling only	Cool

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