AERCO BMK 1500-2000 User Manual
Page 62
Benchmark 1500 - 2000 Boilers
CHAPTER 4 – INITIAL START-UP
Page 62 of 188
AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913
OMM-0097_0D
Ph.: 800-526-0288
GF-142
Table 4-1: Digital Alarm Switch Controls and Display
CONTROL OR
DISPLAY
MEANING
FUNCTION
LED Display
TEMP status
Displays current water temperature or
setpoint.
RST
RESET Button
Resets the unit after an alarm condition.
UP Button
Increases the displayed temperature.
DOWN Button
Decreases the displayed temperature.
SET
SET Button
Used to access and store parameters in the
unit.
Perform the following steps to check or adjust the digital alarm switch settings:
Digital Alarm Settings
1. Set the ON/OFF to the ON position.
2. Press the SET button on the Digital Alarm Switch. SP will appear in the display.
3. Press the SET button again. The current over-temperature limit value stored in memory will
be displayed. (default = 210°F).
4. If the display does not show the required over-temperature
alarm setting, press the ▲ or ▼
arrow button to change the display to the desired temperature setting.
5. Once the desired over-temperature alarm setting (210ºF) is displayed, press the SET button
to store the setting in memory.
6. To calibrate the offset (P1), press and hold the SET button for 8 seconds on the Digital
Alarm Switch. Access code value 0 should appear in the display. The switch comes from the
factory with the code set at 0. AERCO recommends that you do not change this code.
7. Press the SET button again to enter the code. The first parameter label (SP) will appear in
the display.
8.
Using the ▲ and ▼ arrow keys, select parameter P1.
9. Press SET to view the value stored in memory.
10.
If the desired value is not displayed, modify the setting using the ▲ and ▼ arrow keys. The
value can be changed from -10° to +10° offset. Press SET to enter the value and exit to the
text parameter.
11. To exit the programming mode, press the SET
and ▼ buttons simultaneously, or simply wait
one minute and the display will automatically exit the programming mode.
12. Once the programming mode has been exited, the display will show the current outlet water
temperature of the boiler.