Commissioning; Internal Anti-Scalding Protection Via Jumper Slot; Changing Power Output Via The Jumper Slot; Only For Models With Selectable Power Output; Initial Start-Up - STIEBEL ELTRON DCE 10 Plus Operation And Installation

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Commissioning

f Push the power cable through the cable grommet.
f Connect the power cable to the wiring block (See section
16.2, "Wiring diagram", pg. 17).
10. Commissioning
10.1 Internal anti-scalding protection via jumper
slot
For increased safety, the qualified contractor can set an internal
anti-scalding temperature limit via the "Tmax" jumper. The an-
ti-scalding protection feature limits the maximum output tempera-
ture of the water heater. This feature overrides the temperature
selector knob on the front cover. A user can still make temperature
adjustments below the anti-scalding limit using the temperature
selector knob, however, any temperature selected that is higher
than the Tmax limit will be ignored, and the output temperature
will be limited to the set Tmax value.
43 °C | 109 °F
50 °C | 122 °F
55 °C | 131 °F
60 °C | 140 °F
Jumper position Description
43 °C | 109 °F For example in nurseries, hospitals, etc.
50 °C | 122 °F Typical DHW
55 °C | 131 °F Max. for shower operation
60 °C | 140 °F Factory setting (full temperature range)
No jumper Limit 43 °C | 109 °F
f Install the jumper in the required position on the "Tmax" pin
strip.
CAUTION Burns
If the water supplied to the water heater is preheated,
the internal anti-scalding protection and the user-ad-
justable temperature limit may be exceeded.
In such cases, limit the temperature with an upstream
central thermostatic valve.
10.2 Changing power output via the jumper slot;
only for models with selectable power output
DCE 10 and 15 Plus feature selectable power output. If you select
a value other than the factory default setting, you will need to
reposition the jumper. Factory default is position 2, "high."
www.stiebeleltronamericas.com
f Install the jumper in the required position on the "Pmax" pin
strip.
Jumper position Power output
DCE 10 Plus
1 [low] @ 208 V 5.4 kW
@ 220 V 6.0 kW
@ 240 V 7.2 kW
2 [high] @ 208 V 7.2 kW
factory default @ 220 V 8.0 kW
@ 240 V 9.6 kW
No jumper @ 208 V 5.4 kW
[low] @ 220 V 6.0 kW
@ 240 V 7.2 kW
f Mark the selected power output on the type plate. Use a ball-
point pen to do this.

10.3 Initial start-up

Note
During initial start-up, you MUST engage the AE3 safe-
ty switch by depressing the white reset button before
supplying power to the water heater. The unit will NOT
operate until the safety switch has been engaged.
1
≥ 3 min.
f Open and close all connected draw-off valves at least five
times total. Let water run for at least three minutes, until all
air has been purged from the pipework and the water heater.
f Ensure there are no water leaks from any plumbing
connections.
10.3.1 Initial AE3 safety switch activation
f Engage the AE3 safety switch by firmly pressing the white
reset button until it clicks and fully locks in place (the water
heater is delivered with the safety switch disengaged).
1
2
Power output
DCE 15 Plus
9.0 kW
10.0 kW
12.0 kW
10.7 kW
12.0 kW
14.4 kW
9.0 kW
10.0 kW
12.0 kW
2
DCE Plus| 11