Electrical Connection With Short Power Cable; Wiring Block; Commissioning; Internal Anti-Scalding Protection Via Jumper Slot - Stiebel Eltron DHC-E 3/3.5-1 Trend Utilisation Et Installation

INSTALLATION

Commissioning

A 3/4˝ Romex clamp (required, not supplied) should be in-
stalled in the opening located between the hot and cold water
connections. The wire should be fed through the Romex clamp.
The "live" wires must be connected to the slots on the terminal
block marked N and L (DHC-E 3/3.5-1 Trend only) or L and L (all
other versions). The ground wire must be connected to the slot
marked with the ground symbol. See section 17.2, "Wiring dia-
grams," pg. 23.
4 –5

11.5 Electrical connection with short power cable

If the power cable is not quite long enough, you can install the wiring
block closer to the aperture in the water heater.
Reposition the wiring block from the top to the bottom. To do
so, unclip the wiring block by pushing it firmly to the left and
pulling it forwards.
Clip the wiring block in at the bottom by pushing it inwards
and to the left until it clicks into place.
18 | DHC-E Trend & DHC-E Plus
(125–130 mm)

11.6 Wiring block

Consult the chart below for the recommended torque amounts on
the wiring block screws.
Screw Size (mm) Min. Torque (N•cm)
M6 200–250
Using the proper torque specifications to secure wire to the wiring
block helps to avoid personal loss or property damage.
12. Commissioning

12.1 Internal anti-scalding protection via jumper slot

For increased safety, the qualified contractor can set an internal an-
ti-scalding temperature limit via the "T
ing protection feature limits the maximum output temperature of
the water heater. This feature overrides the temperature adjust-
ment display on the front cover (both the temperature selection
and temperature limit via software functions). A user can still make
temperature adjustments below the anti-scalding limit using the
display, however, any temperature selected that is higher than the
T limit set will be ignored, and the output temperature will be
max
limited to the T value.
max
38 °C | 100 °F
43 °C | 109 °F
50 °C | 122 °F
60 °C | 140 °F
Jumper position Description
38 °C | 100 °F Code-compliant hand washing applications (fac-
tory default setting)
43 °C | 109 °F Applications where risk of scalding may be a
concern
50 °C | 122 °F DHW for kitchen sink, utility sink, etc.
60 °C | 140 °F Commercial applications (kitchens, etc.), health
code requirements
No jumper Limit 38 °C | 100 °F
Install the jumper in the required position on the "T
strip.
CAUTION Burns
If the water supplied to the water heater is preheated, the
internal anti-scalding protection and the user-adjustable
temperature limit may be exceeded.
In such cases, limit the temperature with an upstream
central thermostatic valve.
Min. Torque (lbf•in)
17.7–22.1
" jumper. The anti-scald-
max
" pin
max
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