INSTALLATION AND OPERATION INSTRUCTIONS
12
IBC INDIRECT WATER HEATERS - ALL MODELS
7) - Troubleshooting
6. Using a funnel, pour one gallon of commercial ice maker cleaning solution
into the tank through the relief valve opening. Follow the instructions,
cautions, and warnings supplied with the cleaning solution.
7. Turn on the power to the boiler and water heater, program the IBC control
to its highest DHW temp. setting, and allow the boiler to heat the water until
the control is satisfied. If the boiler control is not satisfied after 45 minutes
of operation, program the IBC DHW control setting to its lowest temp.
8. Allow the heated solution to set in the tank 30 minutes.
9. Drain the tank completely using fittings and hoses, as required, to reach a
drain.
10. Fill the water heater tank with fresh, cold, water and drain it completely.
Repeat filling and draining at least three (3) times to flush all of the
cleaning solution from the tank.
11. Reinstall the relief valve and the drain piping.
12. Open the cold water supply and fill the tank with water. Purge the air from
the tank and the piping by opening the cold and hot water faucets in the
house.
13. Return the IBC DHW control setting to the temperature noted in Step 2.
SYMPTOM
DIAGNOSIS
REMEDY
WATER AT FAUCETS TOO
HOT
IBC boiler DHW
temperature setting
too high
• Reduce the DHW Tank Set Point
temperature in the Configure Load Menu
DHW temperature
sensor problems
giving false reading to
IBC Control
• Sensor has fallen from well
• Sensor giving incorrect resistance reading
• sensor connected to Therm terminals
instead of DHW S terminals
• improper 3rd party sensor installed in well
•
WATER AT FAUCETS TOO
COOL
IBC boiler DHW
temperature setting
too low
• Increase the DHW Tank Set Point
temperature in the Configure Load Menu
IBC boiler DHW
Maximum Supply
Temp. setting too low
• Make sure the Maximum Supply Temp.
setting is at least 10°F higher than the DHW
Supply Setpoint PLUS 1/2 of the Supply
Diff’l Temp setting.
