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18
5. Operation
Setting Description Notes
Temp Control Band It is recommended to leave this at the default setting
of 5.4°F (3.0°C), except for low-load situations. If
the IT load is less than the cooler minimum capacity
or if the IT load changes often, set a higher band to
keep the rack temperature stable. A higher band can
help reduce the number of compressor on/off cycles.
For this, the recommended setting is 5.4° to 10°F
(3° to 6°C). If the IT load is greater than the AC unit's
minimum capacity or if the IT load is stable, consider
setting the band to its default or lower to optimize
temperature precision. Recommended setting: 3.6° to
5.4°F (2° to 3°C).
Upper Humid Control
Band
The allowable range above the humidity setting. For
example, a delta of 20% RH at a humidity setting
of 50% RH would mean the dehumidification cycle
would initiate when the humidity rises above 70% RH.
Low Temp Alarm Band If the discharge temperature falls below this value, an
alarm is triggered.
If setting Control Mode to Return Air, you
MUST ADJUST this setting to be based off
of the return air temperature instead.
Maintenance Running
Time
Maintenance Mode duration. If the user does not turn
off Maintenance Mode from the home screen, the AC
unit will automatically revert to normal operation after
this time.
Date and Time Date: yyyy/mm/dd
Time: 24-hour hh/mm/ss
Password Allows user to change password.
5.4 Maintenance Mode
From the home screen, click the Maintenance Mode on/off button. Maintenance Mode temporarily adjusts the cooling output
to 100% to help quickly exhaust heat from the rack to make it more comfortable when servicing IT equipment. No password is
required. The system returns to Auto Mode after 30 minutes. Disable Maintenance Mode in the control menu if the user wants
to prevent use of this feature.
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