Leakage Check; Electrical Connection; Safety; Electric Supply - STIEBEL ELTRON CE Series Operation And Installation

INSTALLATION

ELECTRICAL CONNECTION

6.2

Leakage check

Once all plumbing work is done, check for leaks. If necessary, take
corrective action.
7. Electrical connection
7.1

Safety

DANGER: Electrocution
Before proceeding with any installation, adjustment, al-
teration, or service of the water heater, all circuit break-
er switches servicing the appliance must be turned off.
Make sure that nobody can activate the breaker in the
distribution panel during your service work on the ap-
pliance.
DANGER: Electrocution
The appliance must be properly grounded. Failure to
electrically ground the product could result in serious
personal injury or death.
7.2

Electric supply

Check the electric supply infrastructure:
For Delta configuration, a three-phase wire and a ground are sup-
plied. For a Wye configuration, a three-phase wire, a neutral, and
a ground are supplied. The configuration and voltage are declared
on the unit name plate on the enclosure front type plate.
Feed the wire through the knockout (A) using a Romex clamp
for strain relief.
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Connect the live wires to the contactor (B).
Pull the ground wire into the ground terminal (C).
7.3
To tighten wire to the terminal block, use the proper torque value
according to NEC:
Wire gauge (AWG)
8
6–4
3
The water heater should be connected to a properly grounded ded-
icated branch circuit of proper voltage rating. In installations with
several CE/CES/CERO water heaters, each unit requires a separate
circuit with wire sizes according to NEC.
8.
Close the front cover before the electric supply is turned on.
Before the heater is activated by switching the electric supply
on, run hot water via a hot water faucet for a minimum of 3
minutes to purge all air from the system.
Turn on the circuit breaker.
Turn on the heater via the on/off switch.
Check the water temperature after several minutes of
operation.
Explain the end user how the heater operates.
Make the end user aware that hot water can cause injures if it
is more than 125 °F (52 °C).
Draw special attention to the safety information.
Hand over the operating manual to the end user.
A
9.
C
B
Stiebel Eltron water heaters are designed for a very long service life.
Actual life expectancy depends on water quality and use. To ensure
consistent water flow, remove scale build up on the faucet or any
connected fixtures.

Terminal block torque

Torque (lb-in)
80
165
275

Commissioning

1

Maintenance

DANGER: Electrocution
Before proceeding with any installation, adjustment,
alteration, or service of the appliance, all circuit break-
er switches servicing the appliance must be turned off.
Make sure that nobody can activate the breaker in the
distribution panel during your service work on the ap-
pliance.
2
CE CES CERO SERIES| 7