HTP EL-399NVWH - Manual (Page 58)

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LP- 346 REV. 3.20.14
TEMP DISPLAY C OR F
o F
Function: Adjusts the temperature measurement in F = Fahrenheit to C = Celsius (Default is Fahrenheit).
Table 18 – Heater Setting Program Navigation
Clock Settings
(NOTE: The clock will reset if the heater is powered off for more than a week.)
SCREEN DESCRIPTION
CLOCK MODE (12/24)
08/28/2009 Fr 9:42A
Function: Changes the clock from 12 hour mode (8:45 PM) to 24 hour mode (20:45). To change to 24 hour
mode, press the ENTER key. The letter (A or P) after the time will blink. Press the up or down arrow key once and
the letter will disappear. Press the ENTER key to save the new setting.
CLOCK HOUR
08/28/2009 Fr 10:01A
Function: Allows the user to adjust the hour setting.
CLOCK MINUTE
08/28/2009 Fr 10:01A
Function: Adjusts the minute setting.
CLOCK DAY OF WEEK
08/28/2009 Fr 10:01A
Function: Adjusts the day of week.
CLOCK DATE MODE
08/28/2009 Fr 10:01A
Function: Allows the user to switch to European date format (2009/08/28) from US format (08/28/2009).
CLOCK YEAR
08/28/2009 Fr 10:01A
Function: Adjusts the year setting.
CLOCK MONTH
08/28/2009 Fr 10:01A
Function: Adjusts the month setting.
CLOCK DATE
08/28/2009 Fr 10:01A
The clock is set.
Table 19 – Clock Setting Screens
NOTE: The internal clock does not adjust for daylight savings time, and requires manual adjustment.
E. PROGRAMMING THE SYSTEM SETTING
System Setting Program Access
Note: Programming the heater control is not possible when the heater is firing. Make sure any input which can create a demand on the
heater, such as the tank thermostat, is turned off, so the heater will remain idle to allow programming.
SCREEN DESCRIPTION
ENTER MENU CODE
000 To access the heater setting program, press and hold the ENTER Key for 4 seconds, until the display shows the
screen at left.
ENTER MENU CODE
925
Using the arrow keys on the display, log in your System Menu Access Code “925”. To confirm code, press ENTER
to access system setting program navigation menu.
Table 20 – System Setting Access
F. SYSTEM SETTING PROGRAM NAVIGATION
Once the System Menu Access Code is confirmed, the user can begin to set the system setting menu. Use the   arrow keys on
the display to navigate through the system setting program. To change a setting, press ENTER. System settings can be increased by
pressing the UP ARROW and decreased by pressing the DOWN ARROW on the display. When done, press ENTER. Setting will stop
blinking and you can move on to next setting. Press RESET to exit programming and store settings. Listed below are the heater
settings that can be programmed into the control.
SCREEN DESCRIPTION
Function 1 Factory Program Mode
MODE
VWH MODE 1 This screen indicates that the control is configured correctly for a volume water heater. Do not change this screen.
Function 3 DHW Tank Max Temp
DHW TANK MAX TEMP
180
o
F 3
This is the maximum temperature that can be selected in heater settings for the DHW tank. Factory Default is 180 o F.
(Range: 95 o F to 180 o F)
Function 4 Burner Off Differential
BURNER OFF DIFF
20
o F 4
This is the amount of degrees above tank set point that the burner will maintain its outlet water temperature while
there is a demand for heat. Factory Default is 20
o F. (Range: 1 o F to 45 o F)