29
• Never replace the pressure limiter when using a thermostatic valve.
• Never use the shut-off valve in the cold water supply (22) to reduce the flow rate.
3.7
Power supply
• Connect the power cable to the terminal strip (see wiring diagram
I
).
STB
= High limit safety cut-out
AP3
= Safety pressure limiter
Important information:
• The protection level IP 25 (hoseproof) is only assured if the cable grommet is fitted correctly (
G
or.
K
)
and if the cable sheath is sealed correctly.
• Connect the equipment to earth.
• For supply cables > 6 mm², increase the hole in the cable grommet.
3.8
Completing the installation
Click the lower part of the back panel (
E
3) into place.
3.9
Commissioning
(only by a qualified contractor)
1
Fill and vent the equipment. Please note: Boil-dry risk.
Open and close all connected taps several times, until all air
has been vented from the pipework and the equipment.
Air - see "2.3 Important information".
2
Activate the safety pressure limiter AP 3.
The instantaneous water heater is delivered with the safety
pressure limiter triggered (press the reset button).
3
Push the temperature selector cable plug onto the
electronic PCB.
4
Fit and audibly let the device cap click into place.
Check the firm seat of the device cap on the back panel.
5
Switch on the mains power.
6
Turn the temperature selector as far as possible clockwise
and anti-clockwise, which calibrates the temperature.
7
Check the instantaneous water heater function.
Optional displays of the “traffic light” indicators (
A
9), see also
“7. Troubleshooting”):
red
illuminates in case of faults
yellow illuminates when the equipment is heating water
green flashing - equipment is supplied with mains power
Equipment handover
Explain the equipment function to the user and familiarise the
user with its operation.
Important information:
• Make the user aware of possible dangers (scalding).
• Hand over these instructions to the user for safe-keeping.
1
4
5
6
3
2
C26_0
2_0
2_0834
For contractors
Summary of Contents for DDLE LCD 18
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Page 35: ...35 Notes ...
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