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INSTALLATION
Installation
10. Installation
10.1 Water connection
!
Material losses
Carry out all water connection and installation work in
accordance with regulations.
For sealed unvented (pressurised) operation, operate the appli-
ance only with pressure-tested taps. For open vented (non-pres-
surised) operation, use non-pressurised taps. Connect the hydrau-
lic connections with flat gaskets.
10.1.1 Permissible materials
!
Material losses
When using plastic pipework, observe the manufacturer's
data and the chapter "Specification/ Fault conditions".
The temperature setting can be limited by the qualified
contractor (see chapter "Settings/ Limiting the temper-
ature selection").
Cold water line
Galvanised steel, stainless steel, copper and plastic are approved
materials.
A safety valve is required.
DHW line
Stainless steel, copper and plastic pipework are approved ma-
terials.
10.1.2 Sealed unvented (pressure-tested) for supplying several
draw-off points
The max. permissible pressure must not be exceeded (see chapter
"Specification/ Data table" and cylinder specification).
Install a type-tested safety valve in the cold water supply
line. Please note that, depending on the static pressure, you
may also need a pressure reducing valve.
Size the drain so that water can drain off unimpeded when
the safety valve is fully opened.
Fit the discharge pipe of the safety valve with a constant
downward slope and in a room free from the risk of frost.
The safety valve discharge aperture must remain open to the
atmosphere.
10.1.3 Open (non-pressurised) for supplying one draw-off
point
Note
Never shut off the outlet and pivoting spout.
Do not use an aerator.
10.2 Appliance installation
Appliances with a nominal capacity of 120l or 150l require 2
people for installation.
26�02�01�0424
1
26�02�01�0430
1 Cap
Fit the caps.
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