9
Installation SNA-Series Tankless Heater
Keltech • 215-1815 Rev. B; ECN 130011 10/17/2014
Digital Controller Operation
6
The preprogrammed digital controller is mounted through the bezel on the enclosure door. The digital
controller will not be powered 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 SNA Models)
Setpoint Up Button Increases output temperature (Disabled on SNA
Models)
Setpoint Down Button Decreases output temperature (Disabled on
SNA 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
SNA Models)
XX.X% h.Pr1 Heater Power % (Disabled on SNA Models)
no AUt1 Autotune (Contact Factory) (Disabled on SNA
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)
In Green Displays:
• Setpoint
• Percent Power
• Temperature units F or C
• Menu prompt name
• Alarm code
Output Temperature
(Upper Display)
In Red Displays:
• Actual process temp. of outgoing water
• Prompt parameter value
• Error code (feature disabled)
TABLE 2
Output Indicators
Output Temp.
Output
Temp.
Blank
Setpoint
Temp.
Setpoint Temp.
Setpoint Up
Setpoint Down
Advance KeyInfinity Key
EZ Key
FIGURE 3
Layout Diagram
FIGURE 4
ON - Heating
FIGURE 5
OFF - No Flow
1
2
3
4
5
1
2
3
4
5
1
2
3
4
5
To Next Page
Loading...