OMM-0153_E
• 5/11/2023 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page 57 of 124
CENTURION Installation, Operation & Maintenance Manual
SECTION 6: SAFETY DEVICE TESTING
6.5 Water Temperature Fault Test
A high-water temperature fault is simulated by adjusting the
Automatic
Reset
Over-
Temperature
switch.
1. Start the unit in the normal operating mode and allow the unit to stabilize at its setpoint.
2. On the Automatic Reset Over-Temperature switch, note the current setting, then:
a. Press the
Set
button two times, to activate a setting change.
b. Use the
Down
arrow to lower the setting to a temperature
below
the Outlet
temperature displayed on the Controller’s front face (see Figure 6-6).
c. Press the
Set
and
Down
arrow at the same time to save that temperature setting.
Figure 6-5: Over Temperature Limit Switches
NOTE:
If the Controller’s is not configured to display outlet temperature, go to
Advanced
Setup
→
Unit
→
Front Panel Configuration
and
set
Upper-Right Display
to
Water Outlet
.
Figure 6-6: Edge Controller Front Face
3. Once the Automatic Reset Over-Temperature switch setting is approximately just below
the actual outlet water temperature, the unit should shut down, the
FAULT
indicator
should start flashing, and a
High-Water Temp Switch Open
fault message should be
displayed. It should not be possible to restart the unit.
4. Repeat Step 2 to return to the Automatic Reset switch; but press
Up
arrow to return to
its original setting.
5. The unit should start once the setting is above the actual outlet water temperature.
6. Repeat steps 1
– 4 on the Manual Reset switch. However, unlike the Automatic Reset
switch, the unit will not restart automatically when the original temperature is restored.
You must press the
RST
(Reset) button to restart the unit.
