A.O. Smith Dve-52/80/120 Water Heater User Manual


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ALARM OUTPUT SETUP MENU
Permits user to set the condition (from a list of options) for when
the CCB’s integral alarm output relay will be energized. Alarm relay
connections (common, normally open, normally closed) are located
on the J3 terminal strip on the CCB. Alarm output relay contacts are
capable of switching 1 amp maximum at 120 VAC.
The alarm relay operates in the background according to the settings
in this menu and is not capable of disabling water heater operation.
The alarm relay is used for external notication/verication of
various operational conditions such as fault conditions and heating
mode status. This relay can be used with building EMS (Energy
Management System) and other external supervisory controls.
Output Function
Adjustable user setting. Available options for the Alarm Output
Function setting are:
HeatingMode: Used for heating mode on/off status notication.
Enable/DisableClosed:Used for notication and/or verication of
the enable/disable circuits open/closed status. There are two enable/
disable circuits available for external supervisory control(s) at the J7
socket on the CCB - see wiring diagrams. Enable/disable circuit(s)
status can be viewed in the Heater Status Menu.
Temp<HeaterSP: Used for external notication when current tank
temperature drops below Operating Set Point.
Temp<AlarmSP:Used for external notication when current tank
temperature drops below programmable Alarm SP.
FaultorAlert: Used for external notication whenever a Fault or
Alert condition is active.
Fault:Used for notication whenever a Fault condition is active.
Disabled: Disables the Alarm Relay Output Function.
AlarmSP:Adjustable user setting (90°F to 190°F) the control system
uses for the “Temp < Alarm SP” function described above. This setting
has no effect with any other Alarm Output functions.
AlarmOutputSettings: Changing the user settings in this menu is
done using the same methods for changing the Operating Set Point.
ServiceNote: Adjustable user settings in the Alarm Output Setup
menu are unaffected by Restore Factory Defaults.
DISPLAY SETTINGS MENU
Permits user to set display options for viewing information on the
UIM’s LCD screen.
Temperature Units
Adjustable user setting that changes temperature units display to
Celsius °C or Fahrenheit °F.
Backlight Delay
Adjustable user setting that determines how long the UIM’s LCD
backlight remains illuminated after a key has been pressed. Available
settings are; Always Off, 10, 30 or 60 seconds and Always On.
Contrast
Adjustable user setting to adjust the UIM’s LCD screen contrast
between text and background.
Display Settings
Changing the user settings in this menu is done using the same
methods for changing the Operating Set Point.
Service Note
Adjustable user settings in the Display Settings menu are unaffected
by Restore Factory Defaults.
HEATER INFORMATION MENU
This menu displays non adjustable operational information.
TOP OF MENU
BOTTOM OF MENU
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