KCM Series Manual 55
Temperatures Available with a Controller
The water heater can deliver water at only one temperature seng at a me. The available temperatures are
provided below. A temperature lower than 120° F (49° C) can be obtained at the tap by mixing with cold water.
To change the temperature scale from Celsius to Fahrenheit or vice versa, press and hold the “On/O” buon
for 5 seconds while the water heater is OFF.
Fahrenheit °F 120 125 130 135 140
Celsius °C 49 52 54 57 60
Seng Controller to Mute
On the MC-91-2 to eliminate the beeps when keys are pressed or to turn the beeps back on, press and hold both
the up and down buons unl a beep is heard (approximately 5 seconds).
Locking the Controller
The MC-91-2 controller can be locked by pressing the Priority buon and the up buon together for 5 seconds.
A beep will sound conrming that the controller is locked. The display will alternately show “LOC”, the
temperature seng, and a diagnosc code if one has been acvated. All of the controllers in the system are
also locked.
To unlock the controller press the Priority buon and the up buon together for 5 seconds.
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