Watts Aerco Benchmark OMM-0124 Installation And Start-Up Manual page 62

Benchmark 5000-6000 Boiler Installation & Startup Manual
SECTION 4: INITIAL START-UP
TABLE 4-6: Over-Temperature Alarm Switch Controls and Display
CONTROL/DISPLAY
LED Display
RST
SET
Perform the following steps to check or adjust the Over-Temperature Alarm switch settings:
Over-Temp Alarm Switch Check and Adjustment Instructions
1. Set the ON/OFF switch to the ON position.
2. Press the SET button on the Over-Temperature 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, 98.9°C).
If the display does not show the required over-temperature alarm setting, press the ▲ or ▼
4.
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 on the Over-Temperature Alarm
switch for 8 seconds. 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 display.
Using the ▲ and ▼ arrow keys, select parameter P1.
8.
9. Press SET to view the value stored in memory.
If the desired value is not displayed, modify the setting using the ▲ and ▼ arrow keys. The
10.
value can be changed from -10° to +10°
value and exit to the text parameter.
To exit the programming mode, press the SET and ▼ buttons simultaneously or simply
11.
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.
OMM-0123_E • GF-207 • 12/17/2019
MEANING
Displays current water temperature or setpoint.
TEMP status
Resets the unit after an alarm condition.
RESET Button
Increases the displayed temperature.
UP Button
Decreases the displayed temperature.
DOWN Button
Used to access and store parameters in the unit.
SET Button
(-5.5°C
Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST
FUNCTION
The first parameter label, SP, will appear in
to + 5.5°C) offset. Press SET to enter the
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