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Installation
6
Installation
6.1
Siting
Only install the DHW cylinder in a room that is protected from frost. Otherwise, the
Please
cylinder and all water carrying fittings and connection pipes must be emptied when
note
there is a risk of frost. The formation of ice in the system may result in leaks and
could destroy the cylinder.
The installation room must provide enough space for maintenance and repair work.
The floor at the point of installation must be level and have a sufficient load bearing
capacity. Make sure that the room is high enough to allow anode maintenance.
Before siting the cylinder and connecting the pipework, screw the adjustable feet into
the provided female threads in the base of the cylinder and tighten. With the adjusta-
ble feet, any unevenness of the floor can be compensated.
SE-2-750 add-on: cylinder mounted on foot rim.
6.2
Thermal insulation
Before installing the pipework, fit the thermal insulation or the Sky casing and panel-
ling.
Do not bring fire, solder flames or oxy-acetylene torches into the vicinity of the insula-
tion. Note: Risk of fire!
6.3
Connections and pipework
Connect the cylinder as shown in the connection/system diagram. This diagram is
intended as an installation suggestion; it does not replace the need for on-site engi-
neering.
When selecting the installation material for the system, observe engineering stan-
Please
dards and any possible electro-technical processes (mixed installation). Please
note
observe the electrochemical series of the pipework materials used.
In general, we recommend the use of insulating screw connections.
If the cylinder is connected to the cold and DHW connections with non-metallic pipe
materials or insulating screw fittings, the cylinder must also be earthed; see also
DIN 50927. The equipotential bonding can be connected for example to a screw of
the handhole cover with a pipe clamp at the cylinder connector or to a cylinder foot.
In general, we recommend that the cylinder be incorporated into the equipotential
bonding regardless of the installation conditions.
− Observe the connection thread types:
- F lat gasket connections (type G), such as cold water and DHW connections:
These must be fitted with a flat gasket.
- T hread-sealing connections (type R): Using too much sealing material (e.g.
hemp), results in excessive stress on the connection. This can result in the ena-
mel cracking. Make sure the thread between cylinder connection and pipework
is fully covered.
− The cold water and DHW connections may contain plastic sleeve inserts. These
must remain in the cylinder. Do not pull them out before installation.
− Unused cylinder connections must be properly sealed with blanking plugs. This
also applies if, for example, a coil is not connected to a heat generator or circuit.
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