32
60T - 280T
COSMOGAS
10 - INSTALLATION - Plumbing connections - MYDENS boiler
10.1 - MYDENS boiler plumbing and gas
connections
WARNING! Before installing the appliance, the
central heating system and, if necessary, the domestic
hot water system must be washed thoroughly in order
to remove any residues or impurities which could
compromise the working order of the boiler.
To identify the position of the connections, see figures 8-1
and 8-2.
Gas connection
Connecting to the gas must be made to the relative attachment
with a rigid metal pipe. The capacity of the gas meter must
be adequate for the simultaneous use of all the gas boilers
connected to it. Connect the boiler to the gas, as required
by the regulations in force. The diameter of the gas pipe that
comes out of the boiler, is not a determining factor when
choosing the diameter of the pipe between the boiler and the
meter; it must be chosen according to its length and to head
losses.
WARNING! It is recommended that a gas isolation
valve should be installed immediately before the boiler,
in order to allow the gas supply to be interrupted.
WARNING! Do not power the appliance with gases
other than those specified.
10.2 - MYDENS boiler safety valve
(responsibility of the installer)
The boiler is supplied with no safety valve against too high
pressure, so that the installer is able to choose the valve that
suits the system’s operating pressure (check the operating
pressure of the boiler in the technical data section). The
installation must be carried out in such a way as to allow the
user to check it has intervened when the valve is opened.
The safety valve outlet (responsibility of the installer) must
be orientated in such a way as to avoid danger for people if
it intervenes.
WARNING! If you do not route the safety valve, it
might cause harm to people, animals or things if it has
to intervene.
10.3 - Examples of installation of MYDENS
boiler
Figure 10-1 - MYDENS boiler example of connection diagram
Figure 10-1 KEY
1 MYDENS boiler model 60T-280T
2 INAIL safety valve
3 INAIL pressure gauge
4 INAIL thermometer
5 INAIL maximum safety pressure switch
6 INAIL safety thermostat
7 Gas cock
8 INAIL Gas isolation valve
9 INAIL basin
10 Gas inlet
11 Expansion tank
12 Microbubble separator
13 External sensor
14 Filter
15 Electric power supply
16 Low or high temperature heating system
17 System load assembly
18 Cold DHW
19 Central heating circuit pump
20 Hydraulic separator
21 Air vent valve
23 ----------
24 INAIL minimum safety pressure switch
36 Primary circuit pump
37 Room thermostat or equivalent system
56 Balancing valve (necessary if there is in the boiler the
motorised valve, detail “17” in figure 3-1 and pump “36” is
NOT
the modulating type)
57 - Drain cock
58 - Manifold sensor
