Wiring Block; Commissioning; Temperature Setting Via Jumper Slot; Changing Power Output Via Jumper Slot - Stiebel Eltron DHC 3/3.5-1 Trend Utilisation Et Installation

INSTALLATION

Commissioning

10.6 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.
11. Commissioning

11.1 Temperature setting via jumper slot

The maximum outlet temperature of each jumper position during
normal load operation depends on the operating voltage, flow rate,
and incoming water temperature. See tables below for maximum
temperature output at 240 V and 208 V nominal operating voltages.
38 °C | 100 °F
43 °C | 109 °F
50 °C | 122 °F
60 °C | 140 °F
Jumper position (240 V) Description
38 °C | 100 °F @ 240 V Code-compliant hand washing applications
(factory default setting)
43 °C | 109 °F 240 V Applications where risk of scalding may be
@
a concern
50 °C | 122 °F 240 V DHW for kitchen sink, utility sink, etc.
@
60 °C | 140 °F 240 V Commercial applications (kitchens, etc.),
@
health code requirements
No jumper Limit 38 °C | 100 °F
*
Jumper position (208 V) Description
32 °C | 90 °F 208 V Lukewarm water for hand washing
@
(factory default setting)
36 °C | 97 °F @ 208 V Code-compliant hand washing applications
41 °C | 106 °F 208 V Warm water for hand washing
@
49 °C | 120 °F @ 208 V DHW for kitchen sink, utility sink, etc.
No jumper Limit 32 °C | 90 °F
*All listed output temperatures assume an incoming water
temperature of 15 °C | 59 °F
Install the jumper in the required position on the "T
strip.
CAUTION Burns
If the water supplied to the appliance is preheated, the
internal anti-scalding protection limit may be exceeded.
In such cases, limit the temperature with an upstream
central thermostatic valve.
12 | DHC Trend
Min. Torque (lbf•in)
17.7–22.1
" pin
max

11.2 Changing power output via jumper slot

If you select a value other than the factory default setting, you will
need to reposition the jumper.
Install the jumper in the required position on the "P
strip.
Jumper position Power output
DHC 3/3.5-1 Trend
1 [low] 120 3.0
@ V
208 -
@ V
240 -
@ V
2 [high] 120 3.5
@ V
factory default 208 -
@ V
240 -
@ V
No jumper 120 3.0
@ V
[low] 208 -
@ V
240 -
@ V
Jumper position Power output
DHC 8/10-2 Trend
1 [low] 208 5.4
@ V
240 7.2
@ V
2 [high] 208 7.2
@ V
240 9.6
factory default @ V
No jumper 208 5.4
@ V
[low] 240 7.2
@ V
Mark the selected power output on the type plate. Use a ball-
point pen to do this.

11.3 Initial start-up

Note
During initial start-up, you MUST engage the AE3 safety
switch by depressing the white reset button before supply-
ing power to the water heater. The unit will NOT operate
until the safety switch has been engaged.
1
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.
1
2
max
DHC 4/6-2 Trend
-
kW
2.9
kW
3.8
kW
-
kW
4.5
kW
6.0
kW
-
kW
2.9
kW
3.8
kW
DHC 12/15-2 Trend
9.0
kW kW
12.0
kW kW
10.8
kW kW
14.4
kW kW
9.0
kW kW
12.0
kW kW
2
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" pin