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Fig 2.5 / 1
MODEL
220
300
400
COLD WATER INLET
1"1/4 1"1/4 1"1/4
RECIRCULATION
1"
1"
1"
DRAIN
1"
1"
1"
HOT WATER OUTLET
1"1/4 1"1/4 1"1/4
A manual gas isolating cock is required adjacent to the unit.
NOTE: for system operating with LPG gas it is necessary to
fit a “first stage” pressure reducer close to the tank in order
to reduce the pressure to
1,5 bar
. A “second stage” pressure
reducer of adequate capacity should be installed close to
each heater in order to reduce the supply pressure to
30
mbar
according to UNI-CIG 7432 regulations.
Be sure that the inlet gas pressure of the appliance (through
pressure test point
A
on the valve) is the one for which the
appliance is set.
MODEL
220
300
400
GAS CONNECTION
1/2”
1/2”
1/2”
The appliance is set at works for the gas and pressure on the
data label, according to the following:
G20 (H Gas or Natural gas)
•
inlet pressure: 20 mbar
•
pressure setting: on
•
country: Italy, Spain, Portugal, Great Britain, Ireland,
Greece.
2.5 WATER CONNECTIONS
A
: Hot water outlet
Connect the supply line to the hot water
services, providing a safety valve and
isolating cock.
B
: Spare tapping
C
: Cold water inlet and stopcock.
D
: Drain and recirculation connection.
Connect a drain cock.
We advise to insulate the hot water pipes in order to
avoid energy waste.
2.6 GAS CONNECTION AND
REGULATIONS
A
B
C
D
Содержание TN 220
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