Control, Startup; Unit Timers - Black Box CRCW-12 User Manual

Chapter 4: E2 Controller

4.5.5.6.1 Control, Startup

Figure 4-56. Control, Startup screen.
The Service>Options>Control, Startup screen allows you to select the control method.
Standard = Temperature/Humidity Control
Dewpoint = Dewpoint Control
<Reserved> = For future use. DO NOT select this control method.
"Auto on powerup"—If set to On, the A/C unit turns on automatically when main power is applied.
"Auto on remote"—If set to On, the A/C unit may be turned on via a remote On/Off switch.
"EPO Option" (Emergency Power Off)—If set to On, the off delay timers are bypassed so blowers, etc., stop operating
immediately when the unit is turned off by a remote on/off signal or a critical alarm.
"Suppress Buzzer" allows you to enable or disable the alarm signal buzzer.

4.5.5.6.2 Unit Timers

Figure 4-57. Unit Timers screen.
The Service>Options>Unit Timers screen allows you to adjust the unit timers controlling various startup or shutdown delay
periods.
"Startup delay"—Time delay before blower(s) begin operating after pushing the Enter ( ) key after turning the unit on with a
remote on command.
"Airflow delay"—Time delay for allowing the blowers to reach adequate speed before the air-proving sensor actively monitors an
airflow alarm condition.
"Shutdown delay" — Time delay before unit stops operating after pressing the Enter ( ) key for three seconds or after turning
it off with a "remote off" command.
"Recovery time" — Time period after startup that temperature and humidity alarms are masked from signaling nuisance high or
low temperature and humidity alarms.
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