2-4-2 Gas / Water connection
1. Gas connection
1). Make sure, using the labels on the packaging and the data plate on the appliance itself, that the boiler is in the correct
country and that the gas category for which the boiler was designed corresponds to one of the categories available in the
country where it will be used.
2). The gas supply piping must be created and measured out in compliance with specific legal requirements and in accordance
with the maximum power of the boiler; you should also make sure that the shut-off valve is the right size and that it is
connected correctly.
3). Check that the supplied gas corresponds to the type of gas for which the boiler was designed
(see the data plate located on the appliance itself).
It is also important to check that the pressure of the gas (methane or LPG) you will be using to feed the boiler is suitable,
because if it is insufficient the power may be reduced, causing inconvenience for the user.
2. Water connection
1). The illustration shows the connections for the water and gas attachments of the boiler. See valves configuration
2). Check that the maximum water mains pressure does not exceed 3bar; if it does, a pressure reducing valve must be
installed.
3). For measuring of the pipes and of the heating bodies in the heating system, the residual head value should be calculated
as a function of the requested flow rate, in accordance with the valves shown in the circulation pump graph
3. Drain connection
1). Extend the hose from the safety valve and connect the drain hole.
※
Caution ; Do not store any wettable things under the boiler or near the drain hole.
Name
Central Heating Return
Water Refill Valve
H
G
condensed water outlet
others
D
E
F
Gas Inlet
Safety Valve Discharge
& Drain Valve
Central Heating Flow
C
mark
A
B
Domestic Hot Water Inlet
Domestic Hot Water Outlet
E
D
G
C
B
A
F
H
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