|
| ELECTRONIC CONTROL SYSTEM |
Table 2 - Operating States | ||
|
|
|
| STATE | DESCRIPTION |
|
|
|
| Standby | The water heater is not in an active heating cycle. This usually indicates the |
|
| temperature in the tank has reached the Operating Set Point and the control system |
|
| has terminated the heating cycle. |
|
|
|
| Heating | The control system is in the Heating Mode. At least one bank of heating elements has |
|
| been energized. |
|
|
|
| Alert | The control system has detected/declared an Alert Condition. The controls system will |
|
| continue heating operation. However, a Qualified Service Agent should be contacted to |
|
| check/service the water heater. |
| Fault | The control system has detected/declared a Fault Condition. The control system will |
|
| discontinue heating operation and “lock out.” Power to the water heater must be cycled |
|
| off and on to reset the control system. Note; cycling power will not reset the control |
|
| system until the condition that caused the fault has been corrected. |
|
|
|
Table 3 - Control System Menus | ||
|
|
|
| MENUS† | DESCRIPTION |
| Temperatures | Most commonly accessed menu. Operating Set Point, Differential settings, Tank |
|
| Temperature and Tank Probe Offset are located in this menu. |
|
|
|
| Heater Status | Current Operating State/Mode (heating/standby etc) and status (open/closed - on/off - |
|
| yes/no) of monitored water heater functions and components are displayed in this |
|
| menu. |
|
|
|
| Economy Mode | Seven day 24 hour time clock with temperature set back capability to reduce operating |
| Setup | costs during unoccupied or reduced demand periods. |
|
|
|
| Alarm Output Setup | The control system’s CCB (Central Control Board - see page 42) features on board |
|
| SPDT (single pole double throw) relay contacts for building EMS (Energy Management |
|
| System) notification of operational conditions such as Fault Conditions and heating |
|
| mode status. This menu features a list of user definable conditions for relay activation. |
|
|
|
| Display Settings | Temperature units (°F or °C), appearance (brightness contrast) and backlight delay |
|
| user adjustable settings are located in this menu. |
|
|
|
| Heater Information | Elapsed time of operation, total heating cycle time, heating cycle count, heating |
|
| element bank(s) cycle count and heating bank on time along with UIM and CCB |
|
| software revisions can be viewed in this menu. |
|
|
|
| Current Fault/Alert | Displays any current Alert or Fault messages. |
| Fault History | Retains 9 event history of Fault/Alert messages with time stamp. The Fault History is |
|
| useful when dealing with intermittent operational problems or when the customer has |
|
| reset the control system prior to a service agent’s arrival. |
|
|
|
| Fault Occurrence | Total accumulated number each individual Fault condition has occurred is displayed in |
|
| this menu. This running total of Fault Occurrences can be useful in determining which |
|
| (if any) operational problems have been persistent. |
|
|
|
| Restore Factory | This control system feature allows the user to restore control system user settings to |
| Defaults | their factory default settings. Alarm Output Setup and Display Settings menu items |
|
| ARE NOT changed when factory defaults are restored. |
|
|
|
| Help Menu | Accessible by pressing the corresponding Operational Button from most menus and |
|
| screen displays. This menu provides access to instructions and explanations for user |
|
| settings, Operating States, Status Icons, manufacturer’s web address, technical |
|
| support phone number and service agent contact information. |
|
|
|
†.This table shows a list of the control system menus. These menus will be explained in greater detail in the pages that follow.
Servicing should only be performed by a Qualified Service Agent
51
