Lamborghini Caloreclima GASTER N 51 AW Instrucciones De Uso, Instalación Y Mantenimiento página 68

It is advisable to install on-off valves between the boiler
and heating system allowing the boiler to be isolated
from the system if necessary.
Make the boiler connection in such a way that its
internal pipes are free of stress.
Type and model
GASTER N 51 AW
GASTER N 68 AW
GASTER N 85 AW
GASTER N 102 AW
Characteristics of the water system
In the presence of water harder than 25° Fr, we recommend the use of suitably conditioned water in
order to avoid possible scaling in the boiler, caused by hard water, or corrosion produced by aggressive
water. It should be remembered that, because of its low thermal conductivity, even scaling of just a few
mm thick causes significant overheating of the boiler walls with consequent serious problems.
Water treatment is indispensable in the case of very large systems (containing large amounts of water) or
with frequent introduction of replenishing water in the system. If partial or total emptying of the system
becomes necessary under these conditions, it is advisable to refill it with treated water.
Filling boiler and system
The filling pressure with system cold system must be about 1 bar. If, during operation, the system pres-
sure falls (caused by evaporation of gas dissolved in the water) to a value below the minimum described
above, the user must bring it back to the initial value. For correct operation of the boiler, when hot, its
pressure must be about 1.5-2 bar.
2.4 Gas connection
Before making the connection, ensure that the unit is arranged for operation with the type of
fuel available and carefully clean all the pipes of the gas system to remove any residues that
could affect good functioning of the boiler.
The gas must be connected to the relative connector (see Fig. 2) in conformity with current standards,
with rigid metal pipes or with continuous flexible s/steel wall tubing, placing a gas cock between the
system and the boiler. Make sure that all the gas connections are tight.
The capacity of the gas meter must be sufficient for the simultaneous use of all equipment connected to
it. The diameter of the gas pipe leaving the boiler does not determine the diameter of the pipe between
the unit and the meter; it must be chosen according to its length and loss of head, in conformity with
current standards.
Do not use the gas pipes to earth electrical appliances.
68
a1
B C D E
Return
Heating
550 180 43 35 1” 1/2
640 180 46 38 1” 1/2
720 200 44 36 1” 1/2
800 200 42 34 1” 1/2
cod. 3540P900 - Rev. 01 - 03/2018
a2 a3
Delivery Inlet
Heating gas
1” 1/2 3/4”
1” 1/2 3/4”
1” 1/2 3/4”
1” 1/2 3/4”
GASTER N 51 ÷ 102 AW
Rear View
B
fig. 2