9
Installation
CLE Series Tankless Heater
Keltech •
215-1822 Rev. A; ECN 140011
10/2/2015
Digital Controller Operation
6
The preprogrammed digital controller is mounted through the bezel on the enclosure door. The digital
controller will be powered but the bottom display will read OFF until water is flowing through the heater.
The bottom display will then display the setpoint temperature (See Digital Controller Operation section for
more information).
Description
Upper Display
Lower Display
Function
EZ Key
Toggles output on/off (disabled on CLE models)
Setpoint Up Button
Increases output temperature (disabled on CLE
models)
Setpoint Down Button
Decreases output temperature (disabled on
CLE models)
Infinity Key
Back to Home page
Advance Key
Advances through parameter prompts
Auto, Man, Off
C .r71
Turns Control Loop On/Manual/Off (disabled on
CLE models)
XX .X%
h .Pr1
Heater Power % (disabled on CLE models)
no
AUt1
Autotune (Contact Factory) (disabled on CLE
models)
C or F
C_F1
Change Temperature Units from F to C
Output Indicators (1-5)
Output 1,2,3,4 or 5 are active and operating if
these LEDs are illuminated .
Setpoint Temperature
(Lower Display)
Displays:
• Setpoint
• Percent Power
• Temperature units F or C
• Menu prompt name
• Alarm code
Output Temperature
(Upper Display)
Displays:
• Actual process temp . of outgoing water
• Prompt parameter value
• Error code (feature disabled)
Output Indicators
Output Temp .
Output
Temp .
Output
Temp .
No Flow
Setpoint
Temp .
Setpoint Temp .
Setpoint Up
Setpoint Down
Advance Key
Infinity Key
EZ Key
Layout Diagram
ON - Heating
OFF - No Flow
1
2
3
4
5
1
2
3
4
5
1
2
3
4
5
