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6 | TEMPRA TREND & TEMPRA PLUS WWW.STIEBEL-ELTRON-USA.COM
INSTALLATION
USING THE DISPLAY
Pressing the T
max
button once while at this display will move the
display onto the temperature units parameter setting.
Temperature units parameter setting
The Tempra Trend is capable of displaying temperature in either
Fahrenheit or Celsius.
The current unit will be shown and the display will be flashing to
indicate that the value can be changed. Rotate the control knob to
change the value between Fahrenheit and Celsius.
Pressing the T
max
button once while at this display will move the
display onto the display-lock parameter setting.
Display-lock parameter setting
The display can be locked to prevent changes to the temperature
setpoint. This menu will flash, indicating that the value can be
changed by rotating the control knob. While the display shows
"Off", the lock is not active. The lock is active when it reads "On".
If the display-lock parameter is set to "On" and the user either
holds the T
max
button for 5 seconds or lets the display time out for
15 seconds, the display-lock will become active.
With the display-lock active, a lock will appear on the base display,
and no parameters can be changed. In order to disable the lock,
hold the T
max
button for 12 seconds. The lock will then disappear
from the display and all parameters can be changed again.
Pressing the T
max
button once while at the display-lock parame-
ter setting menu will move the display back onto T
max
parameter
setting menu.
5.2.3 Returning to the base display
While navigating the display and on any menu other than the
base display, holding the T
max
button for 5 seconds will return the
display to the base display. Additionally, the display will revert
to the base display after a 15 second period with no user input.
5.3 Tempra Plus display
The Tempra Plus features a primary and secondary display area
allowing for multiple parameters or information to be displayed.
The Tempra Plus is capable of displaying the current flow rate of
the water passing through the water heater, as well as calculating
the accumulated cost savings of having a tankless water heater
compared to a tank-type water heater.
For the name of each display element on the Tempra Plus, consult
section 4.1.2, “Tempra Plus”, pg. 4.
5.3.1 Base display
The Tempra Plus base display displays the current setpoint tem-
perature in your preferred temperature unit in the top half of the
display.
The bar below the temperature shows the current fraction of total
capacity that the water heater is running at. As the hot water
demand fluctuates, the power capacity status will change to show
between 0 and 10 segments. The display below shows that the
water heater is operating at 30% of capacity.
The bottom half of the display shows the current flow rate through
the unit in either gallons per minute (gpm) or liters per minute
(l/min).
All other menus will revert back to the base display either after a
15 second period of time without user input, or after a 5 second
hold of the Information button.
5.3.2 Information menu
The information menu structure displays additional information
for the user. The information menu is accessed by pressing the
Information button while at the base display.
Accumulated cost savings display
If the Information button is pressed while the display is showing
the base display, the display will advance to the accumulated cost
savings display.
The accumulated cost savings display will display "I1" in the top
half of the display, and the bottom half of the display will alternate
between "Cur" and the accumulated savings of the water heater.
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