Watts AERCO Benchmark BMK5000 - Digital Alarm Switch Checks and Adjustments

Benchmark with Edge [I]: Operation-Maintenance Manual
SECTION 4 – INITIAL START-UP
OMM-0145_D • GF-218 • 11/2/2020 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page 71 of 213
Figure 4-11c: BMK5000-6000 Over-Temperature Limit Switch Location
4.8.1 Digital Alarm Switch Checks and Adjustments
The Over-Temperature Alarm switch settings can be checked or adjusted using the controls
and display on the front panel of the switch illustrated and described in Figure 4-12 and
Table 4-9.
F
Alarm
RST
SET
Limit Control
Figure 4-12: Digital Over-Temperature Alarm Switch Front Panel
TABLE 4-9: Over-Temperature Alarm Switch Controls and Display
CONTROL/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 Over-Temperature Alarm switch settings:
Over-Temp Alarm Switch Check and Adjustment Instructions
1. Set the Enable/Disable switch to the Enable 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).
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.
MANUAL TEMPERATURE LIMIT
SWITCH
DIGITAL OVER-TEMPERATURE
LIMIT CONTROLLER
ADJUSTABLE TEMPERATURE
LIMIT SWITCH (AUTO-REST)
RESET BUTTON FOR MANUAL
TEMPERATURE LIMIT SWITCH