10
HL-Series Tankless Heater
Installation
11/24/2015
Keltech •
215-1823 Rev. A; ECN 150023
NEMA 1 Digital Controller Operation
6
Keys and Displays
Function
Setpoint Up and Down Buttons
In the Home Page, adjusts the set point in the right display . In other
pages, changes the upper display to a higher or lower value, or changes a
parameter selection .
Infinity Key
∞
Back to Home page
Advance Key
Advances through parameter prompts
Output Indicators (1-5)
Number lights indicate activity of outputs 1 through 5 . A flashing light
indicates retransmit activity .
Setpoint Temperature
(Right Side Display)
Displays:
• Setpoint
• Percent Power
• Temperature units °F or °C
• Menu prompt name
• Alarm code
Output Temperature
(Left Side Display)
Displays:
• Actual process temp . of outgoing water
• Prompt parameter value
• Error code
Output
Temp .
Output
Indicators
Setpoint
Temp .
Infinity
Key
Advance
Key
Setpoint
Up
Setpoint
Down
Output
Temp .
Setpoint
Temp .
Output
Temp .
No Flow
The pre-programmed digital controller is mounted through the bezel on the enclosure door/cover. The
digital controller will be powered but the display will read OFF until water is flowing through the heater. The
display will then display the setpoint temperature (See appropriate Digital Controller Operation section for
more information).
Layout Diagram
ON - Heating
OFF - No Flow
