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INSTALLATION
Installation
Connecting with bracket pipe adapters (mainly in Australia)
With these options, the "Cold waterinlet" and "DHW outlet" con-
nections are located on the right hand side or on the left behind
the appliance.
≥400≥400
≥500
≥100
≥400≥400
≥500
≥100
D0000055463
10. Installation
!
WARNING Injury
Incorrect installation can lead to serious injury or ma-
terial losses.
Before any work, ensure sufficient clearances for the
installation.
Handle sharp-edged components carefully.
10.1 Water connection
!
Material losses
Carry out all water connection and installation work in
accordance with regulations.
!
Material losses
The cathodic corrosion protection can only be guaranteed
when the electrical conductivity of the domestic hot water
is within the limits stated in the chapter "Specification/
Data table".
The following material combinations are approved for metal pipe-
work installations:
Cold water inlet DHW outlet
Copper pipe Copper pipe
Steel pipe Steel pipe or copper pipe
Thoroughly flush the pipework before connecting the appli-
ance. Foreign bodies, such as plastic and metal shavings,
rust, sand or sealant can impair the operational reliability of
the appliance.
!
Material losses
To protect the connections against corrosion the water
connection must be made with flat gaskets. The use of
hemp on connections is not permissible.
Install the DHW outlet line and the cold water inlet line (see
chapter “Specification / Dimensions and connections”).
10.1.1 Safety equipment
A T&P valve or a safety valve (cold water expansion control valve)
has to be installed. Observe all applicable national and regional
regulations and instructions.
T&P valve (700 kPa)
If specified, install a type-tested T&P valve using the corre-
sponding connection on the appliance.
The response pressure of the valve must be below or equal to the
permissible operating pressure of the DHW cylinder. The valve
protects the appliance against unacceptable pressure or temper-
ature rises. The diameter of the cold water supply line must be no
greater than the diameter of the valve.
Ensure that the expansion water escaping from the valve can
drip into a drain, e.g. a tundish.
Ensure the drain cannot be shut off.
Size the drain so that water can drain off unimpeded when
the safety valve is fully opened.
Ensure that the discharge pipe of the safety valve is open to
atmosphere.
Fit the discharge pipe of the safety valve with a constant
downward slope and in a location free from the risk of frost.
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