Alarm Output Setup Menu - A.O. Smith 100 Series Instruction Manual

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. This can only be
set up by a Qualified Installer or Service Technician
Adjustable user setting. Available options for the Alarm Output
Function setting are:
Heating Mode: Used for heating mode on/off status notification.
Enable / Disable Closed: Used for notification and/or verification 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 (page 39). Enable/disable
circuit(s) status can be viewed in the Heater Status Menu.
Temp < Heater SP: Used for external notification when current tank
temperature drops below Operating Set Point.
Temp < Alarm SP: Used for external notification when current tank
temperature drops below programmable Alarm SP.
Fault or Alert: Used for external notification whenever a Fault or
Alert condition is active.
Fault: Used for notification whenever a Fault condition is active.
Disabled: Disables the Alarm Relay Output Function.
Alarm SP: Adjustable user setting from 90°F (32°C) to 190°F
(88°C) 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.
Table 15. Alarm Output Setup
ACTION
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 notification/verification 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.
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