Innovation - Edge [i] Installation, Operation, Maintenance Manual
CHAPTER 5
– SAFETY DEVICE TESTING
OMM-0143_A
• GF
-216
•
9/6/2019
Technical Support
•
(800) 526-0288
•
Mon-Fri, 8 am - 5 pm EST Page 69 of 170
5.4 LOW WATER LEVEL FAULT TEST
To simulate a low water level fault:
Low Water Level Fault Test Instructions
1.
Set the
Controller’s
Enable/Disable
switch to the
Disable
position.
2.
Close the water shut-off valves in the supply and return piping to the unit.
3.
Slowly open the drain valve on the rear of the unit. If necessary,
the unit’s relief valve may
be opened to aid in draining.
4.
Continue draining the unit until a
Low Water Level
fault message is displayed and the
FAULT
indicator flashes.
5.
Put the unit in Manual Mode by going to the
Main Menu
→
Diagnostics
→
Manual Run
and setting
Manual Mode
to
Enabled
.
6.
Start the unit and raise the valve position above 30%.
7.
Set the
Enable/Disable
switch to the
Enable
position. The
READY
light should remain off
and the unit should not start. If the unit does start, shut the unit off immediately and refer
the fault to qualified service personnel.
8.
Close the drain and pressure relief valve used in draining the unit.
9.
Open the water shut-off valve in the return piping to the unit.
10.
Open the water supply shut-off valve to the unit to refill.
11.
After the shell is full, press the
Low Water Level Reset
button to reset the low water cutoff.
12.
Press the
CLEAR
button to reset the
FAULT
LED and clear the displayed error message.
13.
Set the
Enable/Disable
switch to the
Enable
position. The unit is now ready for operation.
5.5 WATER TEMPERATURE FAULT TEST
A high-water temperature fault is simulated by adjusting the
Automatic Reset Over-
Temperature Limit
switch on the front of the unit (see Figure 5.5).
Water Temperature Fault Test Instructions
1.
Start the unit in the normal operating mode. Allow the unit to stabilize at its setpoint.
2.
Lower the adjustable
Automatic Reset Over-Temperature Limit
switch setting to match
the outlet temperature displayed on the Controller.
3.
Once the
Automatic Reset Over-Temperature Limit
switch setting is approximately at, or
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.
Reset the adjustable over-temperature switch to its original setting.
5.
The unit should start once the
Automatic Reset Over-Temperature Limit
switch setting is
above the actual outlet water temperature.