AERCO BMS 168 - Manual (Page 32)

7. Repeatedly pressing the HDR TEMP
key allows the NETW BOILER
ADDRESS to be set for each boiler
being controlled on the Modbus Net-
work.
4.3.2 AIR TEMP
The AIR TEMP key is used to set multiple
Modbus functions when the BMS is
configured as a Modbus Slave to an EMS
(or BAS) Master. This key is used to set
functions as follows:
NOTE
Default values for each function are
indicated below. Refer to Modbus
Communication Manual GF-114 for
required settings. Use the ▲ and ▼
arrow keys to increment or
decrement the displayed value.
1. Press key once. RS232 MODE is
displayed. This function can be set to
NORMAL or MODBUS SLAVE. The
Default = MODBUS SLAVE.
2. Press key again. RS232 BAUDRATE is
displayed. Default = 9600.
3. Press key again. MODBUS ADDRESS
is displayed. Default = 128.
4. Press key again. NETWORK TIMEOUT
is displayed. Default = 60 sec.
5. Press key again. REMOTE SIGNAL. is
displayed. This function can be set to 4-
20MA or MODBUS. Default = 4-20MA.
6. Press key again. MODBUS PASS
THRU is displayed. This function can be
set to ENABLED or DISABLED. Default
= DISABLED.
4.3.3 % LOAD
The % LOAD key has two separate and
distinct functions in the Field Adjust Mode.
Pressing and holding this key displays the
actual firing rate (load) percentage and the
number of boilers presently operating.
Releasing the % LOAD key changes its
function to Setting the Internal Clock as
described in the following paragraph.
4.3.4 Setting the Internal Clock With
The % LOAD Key
Pressing and releasing the % LOAD key
changes the first line of the display to SET
TIME CLOCK. The second line of the
display will show: MONTH, DATE, YEAR,
DAY, HOURS, or MINS. Since these
functions wrap around, it is strongly
suggested that you repeatedly press the %
LOAD key until the display shows MONTH:
in the second line. This will make the
following steps easier to follow:
NOTE
When performing the following
steps, use the ▲ and ▼ arrow keys
to increment or decrement the
displayed value. Pressing and
holding the ▲ or ▼ key will change
the displayed value at a rapid rate.
1. Press key until MONTH: is displayed.
Set the actual number of the month (1-
12).
2. Press key again to display DATE:. Set
the actual day of the current month
(1-31).
3. Press key again to display YEAR:. Set
the last 2 digits of the year.
4. Press key again to display DAY:. Set the
day that you want to be the first day of
the week. AERCO normally sets Sunday
as DAY 1, however any day of the week
can be set as DAY 1.
For example, if the actual DATE (day of
month) entered in step 2 is a Monday,
and you want Monday to be the first day
of the week, set DAY: to 1. Conversely,
if you want to retain Sunday as the first
day of the week, set DAY: to 2 to
indicate you are currently in the second
day of the week.
5. Press key again to display HOURS:. Set
the hours using the 24-hour format (0 to
23).
6. Press key again to display MINS. Set
the minutes (0 to 59).
7. This completes the Internal Clock
settings.
4-6