General Instructions; Electrical Safety - DeDietrich MIV-4S AWHP 6 MR-3 User Manual

1 Safety instructions and recommendations
Domestic wa­ Draining the appliance:
ter
1. Shut off the domestic cold water inlet.
2. Open a hot water tap in the installation.
3. Open a valve on the safety unit.
4. When the water stops flowing, the appliance has been drained.
The pressure limiter device (safety valve or safety unit) must be regularly oper­
ated in order to remove limescale deposits and ensure that it is not blocked.
A pressure limiter device must be fitted to a discharge pipe.
As water may flow out of the discharge pipe, the pipe must be kept open to the
open air, in a frost-free environment, and at a continuous downward gradient.
To ascertain the type or specifications of the pressure limiter and to find out
how to connect it, refer to the chapter, "Connecting the domestic hot water tank
to the drinking water mains".
Hydraulics
Installation
1.2

General instructions

1.3

Electrical safety

6 MIV-4S
Caution
Respect the minimum and maximum water pressure and tem­
perature to ensure the appliance operates correctly. See
chapter on Technical Specifications
Important
Allow the space required to install the appliance correctly, re­
ferring to the chapter Dimensions of the Appliance. See the
Installation and Service Manual.
The system must satisfy each point in the rules in force in the country that
govern works and interventions in individual homes, blocks of flats or other
buildings.
Only qualified professionals are authorised to work on the appliance and
the heating installation. They must respect prevailing local and national
regulations during fitting, installation and maintenance of the installation.
Commissioning must be performed by a qualified professional.
Before making any electrical connections, earth the appliance in accord­
ance with prevailing standards.
Danger of electric shock: the length of the conductors between the traction
arrester device and the terminal blocks must be such that the active con­
ductors are put under tension before the earth conductor.
Only qualified professionals may carry out electrical connections, always
with the power off.
Separate the very low voltage cables from the 230/400 V circuit cables.
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