Graf SILENTIO light 15/4 Instrucciones De Instalación Y Mantenimiento página 21

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4.2
Emergency overflow connection
The emergency overflow is to be constructed with commercial 70 mm canalisation pipes. In rooms with
effective floor drains, it would be sufficient in the event of any overflowing water from the back-up unit,
since under normal operating conditions no water will overflow and an extra connection to the sewage
canalisation is not required. If there is no floor drain then it is necessary to install an emergency overflow
that is connected to the sewage network. If there are any changes made to the emergency overflow the
DVGW approval is cancelled as a problem free operation can no longer be guaranteed.
Important:
An emergency overflow is already integrated in the drinking water feeding console, therefore, no
additional overflow is required.
4.3
Drinking water connection
For connecting the float valve to the mains water supply we recommend using a ¾" reinforced hose for
the installation. Take care when tightening the supply pipe that the valve does not also twist around
problem free operation can no longer be guaranteed. An additional shut-off valve will also make any
future maintenance work less complicated.
Before the installation the mains water pipe system must be well flushed through. A fine filter should be
installed to guarantee a long life and trouble free functioning of the float valve and the 3 way switch-over
valve.
Attention:
Line pressure from the mains water
max. 0.3 – 4.5 bar!
4.
Installation and assembly
free outlet to DIN
Emergency
overflow DN 70
info@graf.info
www.graf.info
Drinking water 3/4"
outside threads
Trinkwasser 3/4" AG
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