Electrical Diagram; Settings; Maintenance Instructions; Descaling The Heating Element - Stiebel Eltron SHC 2.5 Instrucciones De Funcionamiento E Instalación

INSTALLATION

Settings

10.1 Electrical diagram

1
2
1
3
4
A
L
1. Heating element
2. Lamp indicator
3. Cut-off
4. Thermostat
5. Tank
11. Settings
The water heater is equipped with an adjustable thermostat
that automatically controls the water temperature. The indi-
cator lamp remains lit only when the water is being heated.
The temperature is adjusted by turning the knob counter-
clockwise (to the left) to increase the temperature and clock-
wise (to the right) to decrease the temperature.
The water heater thermostat can be set to guard against
freezing. This position keeps the internal temperature above
the freezing point.
The piping outside of the water heater and the faucet are not
protected against freezing.
Freeze protection setting
Temperature setting
The water heater thermostat is factory set at 120 °F (49 °C).
8 | SHC 2.5 / SHC 4
2
B 5
N PE

12. Maintenance Instructions

WARNING:
!
BEFORE SERVICING OR CLEANING THE WATER
HEATER, DISCONNECT THE WATER HEATER FROM
THE ELECTRICAL OUTLET.
THE TEMPERATURE/PRESSURE RELIEF VALVE
MUST BE MANUALLY OPERATED ONCE PER MONTH.
CAUTION SHOULD BE TAKEN TO ENSURE THAT:
1. NO ONE IS NEAR THE TEMPERATURE/PRESSURE
RELIEF VALVE DISCHARGE PIPE.
2. THE WATER DISCHARGED WILL NOT CAUSE
ANY BODILY INJURY OR PROPERTY DAMAGE. THE
WATER MAY BE EXTREMELY HOT.
Do not attempt to repair the water heater.
Call your licensed plumber or electrician for service. Unplug
the unit whenever the water supply is turned off.
Before calling for service, make sure that:
1. The heater is properly filled.
2. The electrical supply has not been interrupted.

12.1 Descaling the heating element

Approximately every two years, it is advisable to descale the
heating element and to check the condition of the magne-
sium anode, replacing it if the diameter is less than 5/16˝ (8
mm). (See 12.8, "Changing the anode rod", pg. 10).
12.2 Venting the T&P relief valve
The temperature/pressure relief valve must be manually op-
erated once per month. Caution should be taken to ensure
that:
1. No one is near the temperature/pressure relief valve
discharge pipe.
2. The water discharged will not cause any bodily inju-
ry or property damage. The water may be extreme-
ly hot.
12.2.1 T&P venting / testing procedure
1. Before venting, make sure it is known how to shut
off the water supply to the heater. It is not necessary
initially, but may become so if the T&P valve does
not reseat properly when vented, which may cause
water to leak.
2. On the top of the T&P valve is a small handle that
lifts a pin in the center of the valve. Lift the handle
up so the valve opens, then release it so it closes.
This will vent the T&P valve and at the same time
test if it is functioning correctly.
3. If the valve is stuck so that it does not open or does
not close it should be replaced immediately.
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