Terminal Block; Initial Settings; Commissioning The Water Heater; Normal Maintenance - STIEBEL ELTRON TEMPRA 12 B Operation And Installation Manual

INSTALLATION

INITIAL SETTINGS

8.3

Terminal block

We recommend using stranded wire to connect to the terminal
block. Crimp a ferrule over stranded bare wire to ensure a good
connection.
Consult the chart below for the recommended torque amounts on
the terminal block screws.
Screw Diameter (mm) Torque (N•cm) Torque (lbf•in)
2.8 30-40
2.8-3 35-50
3-3.2 50-60
3.2-3.6 60-80
3.6-4.1 90-120
4.1-4.7 120-180
4.7-5.3 150-200
Using the proper torque specifi cations to secure wire to the wiring
block helps to avoid personal loss or property damage.
See 13, "Technical Data", pg. 9 for information on the proper
wire gauge size.
9. Initial settings
Check whether the set value transducer cable is plugged into the
slot T A1 (Tempra B) or T
Soll Soll
1
2
3
1
4
2
5
3
- 1 Selection of °F or °C units
6
2
- Set jumper on the dial-printed circuit board to °F or °C.
1
4
3
7
2 Activate anti-scalding protection function
-
4
5
3
On the Tempra Plus, an anti-scalding protection function can be
8
5
4
activated by two different methods.
6
6
1. Limit the outlet temperature to the fi xed temperature of
5
9
7
109 °F (43 °C).
6
7
8
10
7
- Insert the coding plug into position Tred (reduced
9
temperature).
8 8
10
11
9
11
9
8 | TEMPRA & TEMPRA PLUS
10
12
12
11
2.65-3.54
3.09-4.42
4.42-5.31
5.31-7.08
7.96-10.62
10.62-15.93
13.27-17.7
D (Tempra Plus) on the main PCB.
2. Select a specifi c outlet temperature
- Switch the appliance 'live'.
- Open the casing so that coding plug T
accessible.
- Set the temperature selector to "OFF". The coding plug must
be set to T (standard delivery).
max
- Set coding plug to T ; the setting mode will be activated and
red
the fl ashing display shows the current temperature limit.
- Within the next 30 seconds, you can select the required
temperature (display continues to fl ash). The setting mode
will terminate after 30 seconds; the programming unit will
display "OFF" again.

10. Commissioning the water heater

WARNING: Open hot water faucet for a few minutes
!
until water fl ow is continuous and all air is purged
from water pipes. The unit's cover must be installed
before the circuit breakers are turned on.
1. Close the cover and fi x it using the screw with the lock
washer.
2. Turn on circuit breakers to bring electrical power to the unit.
3. Turn the temperature selector clockwise and anti-clockwise,
to calibrate the set value transducer.
4. Adjust the water temperature to the desired level using the
knob on the front cover of the unit.
5. Turn on hot water and wait twenty seconds until temperature
has stabilized.
6. Check the water temperature with your hand and make sure
that it does not feel too hot. Reduce if necessary.
7. Explain to the user how the unit works and familiarize him
or her with its use.
Advise the user about possible hazards (hot water tempera-
ture up to 140 °F / 60 °C). Hand over these instructions, to be
kept for future reference.

11. Normal maintenance

NOTICE: The Tempra does not contain any parts ser-
!
viceable by the average user. In case of malfunction
please contact a licensed plumber or electrician.
Stiebel Eltron Tempra tankless water heaters are designed for a
very long service life. Actual life expectancy will vary with water
quality and use. The unit itself does not require any regular main-
tenance. However, to ensure consistent water fl ow, it is recom-
mended to periodically remove scale and dirt that may build up
at the aerator of the faucet(s), the fi lter screen in the unit, or in
the shower head.
/ T becomes
max red
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