A.O. Smith 52, Инструкция по эксплуатации

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HEATER STATUS MENU
This menu displays non adjustable operational information.
This menu contains more information that can be displayed on
one screen of the LCD display. Use the Up & Down Buttons to
navigate to the bottom of this menu.
Figure 16. Top of Menu
Figure 17. Bottom of Menu
Status
Displays the current Operating State of the control system. IE:
Heating, Standby, Fault see Table 9.
Element Banks On
Displays the current number of heating element Banks the
control system has energized. Each Bank of elements contains
3 heating elements.
Figure 18. Economy Mode Setup Menu
Setpoint Adjustment
Adjustable user setting (2°F to 50°F - factory default is 20°F)
the control system uses to calculate the “Economy Set Point.”
The Economy Set Point = normal Operating Set Point minus
the programmed Setpoint Adjustment value. The Economy Set
Point is the water temperature the control system maintains
during programmed Economy Mode time periods. “Economy
Set Point” is displayed instead of “Operating Set Point” and
“Economy Mode” appears beneath the current time on the
Desktop Screen during Economy Mode time periods.
Current Time
Seven Day 24 hr clock. Use this menu item to set the current
time and day of the week. Current day and time are not set from
the factory. “Clock Not Set” will be displayed on the Desktop
until the time/day has been initially set.
Heater In Economy Mode
Displays whether the control system is currently operating in
Economy Mode or not.
Daily Operating Mode (Sun - Mon - Tue - Wed - Thu - Fri -
Sat)
Seven daily sub menus are listed at the bottom of the Economy
Mode Setup menu. There are 3 Operating Modes in each sub
menu;
ECO Contact
Displays the current state of the ECO high temperature
limit switch contacts. The ECO switch is located inside the
immersion Temperature Probe (two red wires).
Enable / Disable 1 & 2
Displays the current state, open or closed, of the two Enable/
Disable circuits (J7 socket on the CCB (Central Control
Board) - see wiring diagrams) provided for external supervisory
controls such as building EMS (Energy Management System).
Both of these Enable/Disable circuits must be closed to
“enable” heating operation. If either Enable/Disable circuit is
open for any reason heating operation will be “disabled.” There
is a plug with two jumper wires installed from the factory in
the CCB J7 socket to enable heating operation when external
controls are not in use.
Service Note: If a supervisory control(s) is used to enable/
disable heating operation, install field wiring between the J7
socket on the CCB and a set of “dry contacts” on the external
control per all applicable building codes. This is a switching
circuit only: DO NOT apply any external voltage or connect
any load (IE: relay coil) to either circuit.
Element Bank On
Displays the on/off status of each Bank of heating elements.
Yes = On, No = Off.
Alarm Condition
Displays the status of the user definable Alarm Output function
- see Alarm Output Setup Menu. Yes = alarm condition has
been met, No = alarm condition has not been met.
Alarm Relay Output
Displays the state of the normally open contacts of the Alarm
Output relay. This relay (J3 contacts on the CCB) is used for
building EMS (Energy Management System) notification of
operational conditions such as Fault conditions.
ECONOMY MODE SETUP MENU
This menu contains settings used to establish an “Economy
Set Point” and “Economy Mode” operating periods. This
control system feature can help reduce operating costs during
unoccupied, low load, or peak demand periods.
Printed on 2/8/2018 9:05 AM CT