![background image](http://html.mh-extra.com/html/aerco/5r5-384/5r5-384_user-manual_2861558069.webp)
AERCO Control System (ACS)
CHAPTER 4
: Programing ACS Operating Modes
11/22/2017
AERCO International, Inc.
•
100 Oritani Dr.
•
Blauvelt, New York 10913
Page 69 of 139
OMM-0081_0F
Phone: 800-526-0288
GF-131
4.2.3 Entering Reset Ratio and Building Reference Temperature
The Reset Ratio and Building Reference Temperature (
BLDG REF TEMP
) are also entered
using options contained in the Field Adjust Menu. These parameters are entered as shown
below:
Entering Reset Ratio and Building Reference Temperature
1.
To enter the required Reset Ratio, scroll through the Field Adjust Menu and select
RESET RATIO.
2.
If the desired ratio is not displayed, press the
CHANGE
key. The display will switch to a
reverse video format indicating that a change is in process.
3.
Select the required Reset Ratio using the ▲ or ▼ arrow key.
4.
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.
5.
Next, scroll through the Field Adjust Menu and select
BLDG REF TEMP
.
6.
If the desired
BLDG REF TEMP
is not displayed, press the
CHANGE
key. The display
will switch to a reverse video format.
7.
Select the required
BLDG REF TEMP
using the ▲ or ▼ arrow key.
8.
Press the
ENTER
key to store the change. The reverse video display will revert to the
normal VFD display format.
9.
This completes the required entries in the Field Adjust Menu. Proceed to the next
paragraph and select the Boiler Operating Mode.
4.2.4 SELECTING BOILER OPERATING MODE
The Boiler Plant can be set for either Parallel or Sequential Mode operation. The Boiler
Operating Mode is selected in the Configuration Menu as shown below:
Selecting Boiler Operating Mode
1.
Using the keypad on the ACS, press the MENU key, until CONFIGURATION MENU
appears in the display.
2.
On the keypad, press the ▲ arrow key once. BOILER OP MODE will be displayed in the
first line of the VFD display. The second line of the display will show the currently
selected Boiler Operating Mode. (SEQUENTIAL MODE or PARALLEL MODE). The
default setting is SEQUENTIAL MODE.
3.
If the desired Operating Mode 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, toggle the display to the desired setting.
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 stored in memory.