STULZ CyberRow Chilled Water Series Installation, Operation & Maintenance Manual
(
Dec.
, 2013)
4-21
4.5.4.1 Setpoint
Screens
CONTROL
Version
SET
Alarm Set
The Set points (
SET
) screens below may be accessed from
the Control menu.
Temperature
Set Point
72.0°F
Controlling to Ret
STATUS________________
Temp: 72.6°F Set:72.0°F
Dew:
50.1°F
Press
( )
Key
Humidity
Set Point
45%
Controlling to Ret
(DP calculated from
temp at same location)
STATUS________________
Hum: 45.5% Set:45%
Dew:
50.1°F
Press
( )
Key
The Temperature and Humidity setpoint screens allow you
to view and adjust the control set points and compare them
to system level operating data derived from the various
Sensor/Transmitter inputs.
Static Pressure
Set Point
100 miwg
STATUS________________
Pres: 100 miwg
Press
( )
Key
The Static Pressure screen only appears if your unit is
confi gured for static pressure control at the factory. It
allows you to adjust the static pressure set point and
compare it to the actual static pressure measured.
Static pressure should be set when commissioning the A/C
unit. The operating static pressure can only be set correctly
after the A/C unit is installed and operable in its intended
location. When setting the static pressure, the A/C unit must
be turned on and the fan(s) should be allowed to reach full
speed before making adjustments.
Fan Control
Fan links:
None
Upper Fan Spd Ctrl:
Var frm Avg
Mid Fan Spd Ctrl:
Var frm Avg
Lower Fan Spd Ctrl:
Var frm Avg
If your unit is confi gured for zone temperature fan speed
control instead of static pressure control, the Fan Control
screen allows you to select a fan speed control method
(Variance from Average, Temperature Proportional or
Manual, see Section 4.4.4) for each of the three fans. You
may also link the fan temperature zones together in any
combination so selected fans operate at the same speed.
The linked zones use the average of the linked temperature
sensors to control fan speed. Link bars appear to the left of
the fan icons indicating which fan zones have been linked.
The lower two fi elds disappear from the Fan Control
screen when the system is in the humidifi cation or
dehumidifi cation modes. In these modes individual fan
speed control ceases and the fan speeds are automatically
linked and controlled to the same speed.
4.5.4.2
Alarm Setpoint Screens
CONTROL
Set
ALARM SET
Clock
The Alarm Set points screens may be accessed from the
Control menu. These screens allow you to enable the High
and Low temperature and humidity alarms, adjust their set
points and compare them to the control set points and to
the current system level operating data derived from the
sensor inputs.
Temperature Alarm
High alarm Enable:
Yes
Set Point
80.0°F
STATUS________________
Temp: 72.6°F Set:72.0°F
Dew: 50.1°F
High Temperature Alarm
Press
( )
Key
Control
Menu
(Continued on next page)
