STULZ CyberRow DX Series Installation, Operation & Maintenance Manual
4.6.2.7
Service>Options>Group Menu Screens
Accessed in the Service menu, the Service>Options>Group Setup screens only appear if two or more units are wired
together as a work group.
4.6.2.7.1 Group Setup
Group Setup
Unit
ACTIVE
Number of Days
00
Hour of Day
00
Unit 1 of 2
Lead: 1
The Service>Options>Group Setup screen allows you to
select the work group duty assignment for the A/C unit.
The duty must be assigned for each grouped A/C unit at
its local display terminal.
Enter the number of days between rotating active units.
Enter the hour of day for unit rotation to occur.
The screen also displays a status message indicating
which A/C unit you are accessing and which unit is
currently the lead unit in the group.
4.6.2.7.2 Capacity Assist
Capacity Assist
Assist Time
300s
Cooling Cut in
1.0°
F
Cut out
0.0°
F
The fi rst Service>Options>Capacity Assist screen
allows you to enter the delay period for the unit to begin
operating if it is in the capacity assist mode. Also, each
A/C unit in the group may be assigned local cut-in and
cut-out setpoints for it's capacity assist operation. The
values entered are offsets which are applied to the
control setpoints.
Each unit in the group should be assigned incrementally
increasing/decreasing offsets for cooling, humidifying
and dehumidifying so they will turn on one at a time only
if the unit(s) currently operating are unable to satisfy the
demand.
4.6.2.7.3 Capacity Assist #2
Capacity Assist
Humid Cut in
-4.0%
Cut out
0.0%
Dehum Cut in
4.0%
Cut out
0.0%
The second Service>Options>Capacity Assist screen
allows you to adjust local capacity assist humidifi cation
and dehumidifi cation setpoints.
4.6.2.7.4 Group Sensors
Group Sensors
Use lead sensor, avg,
min, or max of group
Temp/Hum:
Local
The lead controller polls the controllers from all the A/C
units in the work group and calculates the averaged value
of their temperature sensors and humidity sensors. It also
determines the minimum (lowest) temperature sensor
value and the lowest humidity sensor value in the A/C
group and conversely, determines the maximum (highest)
temperature sensor value and maximum humidity sensor
value in the A/C group.
The Service>Options>Group Sensors screen allows you
to select whether to control the A/C work group using the
T/H sensors connected to individual A/C units (Local)
or control the work group using network sensor values
transmitted from the lead controller. You may select the
network sensor values to be the Lead, Average, Min or
Max values. The selections made in this screen will affect
all the controllers in the work group no matter which
controller you access the screen from.
4.6.2.7.5 Group Averaging
Group Averaging
Use unit sensors when
in Standby or Assist
For Group Averaging
Temp/Hum Sensors
Yes
Static Pr Sensors
Yes
Each unit in the group may be individually set to allow the
lead controller to include it's sensors for determining the
group average value when it is confi gured for Standby or
Capacity Assist operation. If set to no, the lead controller
will not poll that unit’s sensors when calculating the
averaged values.
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Содержание CyberRow DX CRS-042-G
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