STULZ CyberRow Chilled Water Series Installation, Operation & Maintenance Manual
(
Dec.
, 2013)
4-26
that allows access to the Factory menu and for guidance on
setting the PI control values.
4.5.5.5.2 Temp Zone Set Up
Upper Temp Zone
Min Fan Speed:
25.0%
Max Fan Speed:
100.0%
Var Dampening:
0.0%
Prop Temp Bnd:
3.0%
Current Speed: 10.0%
Var from Avg local
Middle Temp Zone
Min Fan Speed:
25.0%
Max Fan Speed:
100.0%
Var Dampening:
0.0%
Prop Temp Bnd:
3.0%
Current Speed: 10.0%
Var from Avg local
Lower Temp Zone
Min Fan Speed:
25.0%
Max Fan Speed:
100.0%
Var Dampening
0.0%
Prop Temp Bnd:
3.0%
Current Speed: 10.0%
Var from Avg local
If your unit is confi gured for zone temperature control,
Blower>Temp Zone display screens are available for the
upper, middle and lower fan. These screens allow you to
adjust minimum and maximum fan speed settings and
modify the fan speed PI control response parameters.
The variable dampening value, used with Variance From
Average fan speed control (see Section 4.4.4.1.1), adjusts
the effect of the variance on the fi nal fan speed.
4.5.5.5.3 Blower Set Up
Blower Setup
Hum Fan Speed:
100%
Dehum Fan Speed:
60%
Static Sensor
103
The fans will operate at the Hum Fan Speed setting during
humidifi cation, and the Dehum Fan Speed setting during
dehumidifi cation. Humidifi cation and dehumidifi cation fan
speeds are limited to the most restrictive value between
the factory preset minimum and maximum, the Temp Zone
minimum and maximum, and the speed setting for the
operating mode. The higher minimum value is the low
speed limit and the lower maximum value is the high speed
limit.
Ex: If the Hum Speed is changed to 60% in the Blower Set
Up screen and the maximum speed for the Lower Temp
Zone fan is set to 75%, the fans will run at 60% during
humidifi cation.
100%
0%
(Off)
Hum Speed
Setting 60%
75%- Zone
Maximum
Fans will run at 60% of full speed during humidifi cation.
25%- Zone
Minimum
If the Hum Speed is set to 80%, the lower fan will run at
75% during humidifi cation as it is limited by the maximum
speed setting for the lower temperature zone.
100%
0%
(Off)
75%- Zone
Maximum
Lower fan will run at 75% of full speed during humidifi cation
(limited by the Temperature Zone Maximum).
25%- Zone
Minimum
Hum Speed
Setting 80%
If your system is confi gured for static pressure control at the
factory, the fan speed is controlled to maintain the static
pressure at the setpoint entered in the Control>Set>Static
Pressure menu screen. When static pressure control is
enabled, if you adjust the speed values in the Blower Setup
screen it will have no effect on the operating fan speeds as
they are controlled by static pressure.
4.5.5.6
Options Menu Loop
SERVICE
Blower
OPTIONS
Digital In
From the Service>Options menu you may press the
Enter (
) key to access a menu loop with screens used
to set up and adjust various options.
4.5.5.6.1 Control, Startup
Control, Startup
Control:
Standard
Auto on powerup:
On
Auto on remote:
On
EPO Option?
Off
Suppress Buzzer?
No
The Service>Options>Control, Startup screen allows you
Service Menu
