AERCO Control System (ACS) - Manual (Page 75)

MC2: 04/23/13 Page 75 of 144
GF-131
AERCO Control System (ACS)
AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, New York 10913 • Phone: 800-526-0288
Installation, Operation, and Maintenance Manual
OMM-0081_0D
4.4.1 Selecting Constant Setpoint Mode
The Constant Setpoint Mode is selected using the Header Set Mode option in the Field Adjust
Menu as shown below:
4.4.2 Selecting Internal Setpoint Temperature
The Internal Setpoint Temperature is selected using in the Field Adjust Menu below:
Selecting Constant Setpoint Mode
1. Using the keypad on the ACS, press the MENU key, until FIELD ADJUST MENU
appears in the display.
2. Using the ▲ or ▼ arrow key on the keypad, scroll through the menu until HEADER SET
MODE is displayed in the first line of the VFD display. The second line of the display will
show the currently selected Header Set Mode (CONSTANT SETPOINT, OUTDOOR
RESET or REMOTE SETPOINT).
3. If CONSTANT SETPOINT is not displayed in the second line of the display, press the
CHANGE key. The VFD display will switch to a reverse video format indicating that a
change is in process.
4. Using the ▲ or ▼ arrow key, select CONSTANT SETPOINT.
5. Press the ENTER key to store the change. The reverse video display will revert to the
normal display format indicating that the change has been store in memory. With the
ACS still in the FIELD ADJUST MENU, proceed to next paragraph to select the Internal
Setpoint Temperature.
Selecting Internal Setpoint Temperature
1. Using the ▲ or ▼ arrow key on the keypad, scroll through the menu until INTERNAL
SETPT is displayed in the first line of the VFD display. The second line of the display
will show the currently selected Internal Setpoint temperature (default = 160°F). If the
required INTERNAL SETPT is not displayed in the second line of the display, press the
CHANGE key. The VFD display will switch to a reverse video format indicating that a
change is in process.
2. Using the ▲ or ▼ arrow key, select required INTERNAL SETPT temperature.
3. Press the
ENTER key to store the change. The reverse video display will revert to the
normal display format indicating that the change has been store in memory.
4. This completes the required entries in the Field Adjust Menu. To complete the Constant
Setpoint Mode set-up, select the Boiler Operating Mode as described below.