Powering The Unit On/Off; Accessing Menus/Passwords - Data Aire dap 4 Installation, Operation & Maintenance Manual

Powering the Unit ON/OFF

Before powering unit ON, check that power is available and proper connections have been
completed
Note: The unit is shipped with the control power in the OFF (Off by Key) position
Turn the disconnect switch to the ON position. The controller display keys and screen will illumi-
nate and the processor will conduct a self-test (the screen will remain illuminated with no messag-
es until the testing is complete). The self-test takes approximately 20 seconds. Once completed,
the Main Menu screen w ill be displayed.
The Main Menu screen will display the unit type, date and time, and unit status. In addition, the
screen will scroll and display the temperature, relative humidity and operating mode.
The Unit Status will indicate the unit: "OFF by Key"
The unit may be turned ON at any time. Hold the Esc key for approximately 5 seconds. The dis-
play will continue to scroll and display messages. At the same time the unit status is changed to
"Unit On". Once powered there will be a 5-600 second start delay indicated by
"Time Before Start: XXs".
Note: The start time delay is programmable from 5-600 seconds (Menu A – ON/OFF). The fac-
tory setting is 5 seconds.
For initial programming of setpoints, alarms, delays, etc. it is not necessary to have the unit ON.
With the unit in the "OFF by Key" mode, all settings are available to view and change (other than
Menus J – Factory Settings and L – Configure Inputs/Outputs) if the proper password is entered.
Once the desired settings are complete, change to the Unit to ON by holding the Esc Key for
approximately (five) 5 seconds.

Accessing Menus/Passwords

To access any Menu a numerical password is required. There are three levels of password:
10 • dap4 User Manual
DA gForce
05/19/11 12:08
TSP 72.0 F Hum SP 50%
Unit Status: UnitOn
• SERVICE LEVEL
• FACTORY LEVEL
• ZONE MASTER