FusionModule1000B Water-Cooled IT Solution
Commissioning Guide
9 Commissioning Core Components
Issue 02 (2017-01-10)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
89
Paramete
r
Description
Configuration Principle
Number of
running
units
Indicates the number of running
units in a group. The value is an
integer ranging from 1 to the number
of units in a group.
Assign the address 1 to the master
unit, and assign addresses starting
from 2 consecutively to all running
units in a group. Remaining units will
be regarded as standby units. Set the
number of running units depending on
the number of servers.
Standby
mode
rotation
Indicates whether to disable or
enable the active and standby
precision air conditioners to work
alternatively to maximize their
service life.
This function is recommended when
the heat distribution is even.
Rotation
period
Indicates the interval between
rotations. The value ranges from
1-30 days.
The default value is 7.
Rotation
time
Indicates the time when rotation
takes place. The value can be any
hour in a day (0-23).
The default value is 0.
Forced
rotation
Indicates whether to enable forced
rotation before the specified rotation
time. After a forced rotation, the
rotation period starts again.
This parameter is set to
No
by default.
If forced rotation is necessary, set this
parameter to
Yes
.
Requireme
nt control
Indicates whether to enable or
disable the requirement control
function on the master unit.
Yes: The master unit
synchronizes data (the
temperature and humidity control
and setpoints of temperature and
humidity of the master device) to
slave units, and all the precision
air conditioners in the group refer
to the mode delivered by the
master unit.
No: The master unit does not
synchronize data to slave units,
and all the air conditioners
operate based on their own
requirements, not referring to the
mode delivered by the master
unit.
If the T/H control type, Supply-air
temp setpoint, and Supply-air humid
setpoint parameters of all units in a
group are set to the same values and
the heat loads are evenly distributed, it
is recommended that you enable the
requirement control function.
Cascade
If requirement control is enabled,
you can enable the cascade function
to start standby units if running units
cannot meet the cooling capacity
requirement.
If the heat load of devices may
increase, it is recommended that you
enable the cascade function.
