82
GB
2.6.
DISCHARGE
Empty the appliance should this
remain inactive in unheated premi-
ses, with environmental temperatu-
res below zero.
Upon installation, envision such
3
4
S
E
U
T
T
valvola unidirezionale
valvola di
sicurezza
alimentazione
utilizzazione
ricircolazione
scarico
R
eventuality and connect a drain
cock to
fi
tting R (
fi
g. 4).
TO EMPTY THE WATER HEATER:
• switch-o
ff
the burner and close the
gas supply
• close the shut-o
ff
cock upstream of
the appliance;
• open the use cocks downstream from
the water heater;
• open the drain cock connected to
fi
t-
ting R.
ATTENTION!
Boiling water may leak during emptying!
3. CONNECTION TO THE RECIRCULATION
3.1
RECIRCULATION
Should the utility plant also include the circuit for the DHW recirculation, the same
fi
tting R
used for draining can be used.
The circuit at the side schematises the connection to be carried out in this case.
valvola unidirezionale
user
Recirculation
Drain
Safety valve
Supply
