Options Menu Loop - Black Box CRCW-12 User Manual

Chapter 4: E2 Controller
The blower fans will operate at the Hum Fan Speed setting during humidification, and the Dehum Fan Speed setting during
dehumidification. Humidification and dehumidification 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 set to 60% in the Blower Set Up screen and the maximum speed for the Lower Temp Zone fan is set to
75% and the factory-set maximum fan speed is 90%, the fans will run at 60% during humidification.
Figure 4-53.
If the Hum Speed is set to 80%, the lower fan will run at 75% during humidification as it is limited by the maximum speed
setting for the lower temperature zone.
Figure 4-54. Lower fan will run at 75% of full speed during dehumidification (limited by the temperature zone maximum).
If your system is configured 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

Figure 4-55. Options Menu Loop screen.
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.
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