6| DHC-E WWW.STIEBEL-ELTRON-USA.COM
INSTALLATION
ELECTRICAL CONNECTION
All plumbing work must comply with national and applicable
state and local plumbing codes.
Notice for Australia / New Zealand:
The installation shall comply with AS/NZS 3500.4.
A pressure reducing valve must be installed if the cold water
supply pressure exceeds 150 PSI (10 bar).
Make certain that the cold water supply line has been flushed
to remove any scale and dirt.
Install isolating valve in cold water line as shown in illustra-
tion “Mounting the appliance”. This allows the appliance to
be isolated for maintenance purposes.
Cold water connection (inlet) is on the right side of the ap-
pliance, hot water connection (outlet) is on the left side of
appliance.
Tankless water heaters such as the DHC-E are not required to
be equipped with a Pressure and Temperature Relief Valve
(P&T). If the local inspector will not pass the installation
without a P&T, it should be installed on the hot water outlet
side of appliance.
The appliance is designed for connection to copper tubing,
PEX tubing or a braided stainless steel hose with a ½“ NPT
female tapered thread. If soldering near the appliance is nec-
essary, please direct the flame away from the plastic housing
of the appliance in order to avoid damage.
When all plumbing work is completed, check for leaks and
take corrective action before proceeding.
6. Electrical connection
DANGER Electrocution
Carry out all electrical connection and installation work
in accordance with relevant regulations.
DANGER Electrocution
Only use a permanent connection to the power supply.
The appliance must be able to be separated from the
power supply by an isolator that disconnects all poles
with at least 3mm contact separation.
!Damage to the appliance and the environment
Observe the type plate. The specified voltage must match
the mains voltage.
DANGER Electrocution
Before beginning any work on the electric installati-
on, be sure that main breaker panel switch is „off“ to
avoid any danger of electric shock. All mounting and
plumbing must be completed before proceeding with
electrical hook-up. Where required by local, state or
national electrical codes the circuit should be equipped
with a „ground fault interrupter“.
DANGER Electrocution
As with any electric appliance. failure to electrically
ground appliance may result in serious injury or death.
The appliance should be connected to a properly grounded
dedicated branch circuit of proper voltage rating. In installa-
tions with several appliances, each appliance requires an
independent circuit. Please refer to the technical data table
for the correct wire and circuit breaker size.
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The wire must be fed through the rubber seal located be-
tween the hot and cold water connections. Then feed wires
through strain relief clamp and tighten clamp down on wire.
The „live“ wires must be connected to the slots on the ter-
minal block marked L and L (L and N). The ground wire must
be connected to slot marked with the ground symbol. Strain
relief clamp with screws and rubber seal are provided.
6.1 DHC-E 8/10 - Appliance with output power op-
tions
For the DHC-E 8/10 instantaneous water heater, the output power
is adjustable in 2 stages. In its delivered condition the appliance
is set to 7.2 kW@240 V.
1
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1 coding plug
If the appliance should be installed with a different output power,
take the following steps:
Insert the coding plug to the desired performance.
Stage 1 208 V 220 V 230 V 240 V
5,4 kW 6,0 kW 6,6 kW 7,2 kW
Stage 2 208 V 220 V 230 V 240 V
7,2 kW 8,1 kW 8,8 kW 9,6 kW
Mark the selected output power and voltage on the type plate
with a permanent marker.
