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WATER CONNECTIONS
• Connect the water heater to the wa-
ter distribution system using a 3/4"
G pipe. The cold water inlet is to the
right, while the hot water outlet is on
the left, looking at the heater.
• Make sure the pressure in the water
supply system does not exceed 8
bar. If the pressure is higher than this,
then you must install a high quality
pressure reducer.
• The water heater must be fi tted with a
certifi ed water pressure safety device
with a relief valve set at 8 bar, a non-
return valve, and an eff ective drai-
nage system to be fi tted to the cold
water inlet pipe. The safety valve set-
ting, limited to 8 bar, must never be
altered, on pain of cancellation of the
guarantee covering the water heater.
• During heating, the pressure relief
valve will necessarily drip. This is nor-
mal and must stop when the heater
reaches the set temperature. Provide
a funnel, connected to the drainage
system, as shown below (fi gure 3).
Make sure, by letting the water run
for some time, that there is no swarf,
sand, pipe dope etc in the water sup-
ply line. If any of these enter the pres-
sure relief or non-return valve they
will cause malfunction and in some
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cases may lead to failure.
• If the water heater is to remain out of
service in an unheated area with tem-
peratures below zero, it is absolutely
essential to drain the heater (fi gure
4).
To this purpose, connect a drainage valve to
the fi tting R (fi gure 4) at installation.
To drain the water heater, you must:
· Close the valve upstream of the
water heater
· Open the stop valves downstream
of the water heater
· Open the drain valve connected to
fi tting R.
4
R
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