27
For contractors
2.4
Instructions and regulations
• The installation (water and electrical work) and commissioning, as well as the maintenance of this
equipment, must only be carried out by a qualified contractor in accordance with these instructions.
• Perfect function and safe operation can only be assured when using original accessories and spare parts
intended for this equipment.
• Observe all locally applicable instructions and regulations regarding water and electrical connections, such
as DIN VDE 0100, DIN 1988, DIN 4109, DIN 44851.
• Observe all regulations of your local water and electricity supply companies.
• The equipment type plate.(
A
13).
• See "5.1 Specification".
The specific electrical resistant of the water used must not fall below that stated on the type plate
of the equipment. In a linked water network, observe the lowest electrical water resistance (see "5.2
Application areas"). Your water supply company will advise you of the specific electrical water resistance
or conductivity.
• Install the device only in an enclosed room free from the risk of frost. Store the dismantled device in a
room free from the risk of frost, as water residues remain inside the device.
• The protection IP 25 (hoseproof) can only be ensured with a correctly fitted cable grommet.
•
Water installation
:
– Material of the cold water line:
Steel, copper or plastic pipework.
– Material of the DHW line:
Copper or plastic pipework*.
* The instantaneous water heater can reach operating temperatures up to 85 °C. In case of faults, loads
up to 95 °C / 1.2 MPa can occur temporarily in the installation. Any plastic pipework used must be suitable
for these conditions.
• A safety valve is not required.
• Never operate with pre-heated water.
• Never use taps/valves for open vented equipment.
• For thermostatic valves, see "1.6 Recommended adjustment of taps/valves".
•
Electrical installation:
• Use only permanently wired power cables.
• The equipment must be able to be separated from the mains power supply, for example by fuses that
disconnect all poles with at least 3 mm contact separation.
Summary of Contents for DDLT PinControl 13
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