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1.16 BOILER COMPONENTS.
Key:
1 - Flue hood
2 - System pressure switch
3 - Boiler pump
4 - D.H.W. probe
5 - Gas valve
6 - D.H.W. flow switch
7 - System filling valve
8 - Flue safety thermostat
9 - Flow probe
10 - Rapid heat exchanger
11 - Combustion chamber
12 - Ignition and detection electrodes
13 - System expansion vessel
14 - Burner
15 - Air vent valve
16 - Safety thermostat
17 - Manifold
18 - System draining valve
19 - By-pass
20 - 3 bar safety valve
PLEASE NOTE: connection group (optional)
1.17 KITS AVAILABLE ON REQUEST.
• System cut-off valves kit. The boiler is designed
for installation of system interception cocks
to be placed on flow and return pipes of the
connection assembly. This kit is particularly
useful for maintenance as it allows to drain just
the boiler without having to empty the entire
system.
• Polyphosphate dispenser kit. The polyphos-
phate dispenser reduces the formation of lime-
scale and preserves the original heat exchange
and domestic hot water production conditions.
The boiler is prepared for application of the
polyphosphate dispenser kit.
• Connection unit kit. It includes pipes, fittings
and cocks (including gas cock), to carry out all
connections to the boiler system.
• Anti freeze kit with resistance (on request). If
the boiler is installed in a place where the tem-
perature falls below -5°C and in the event there
is no gas, the appliance can freeze. To prevent
freezing of the domestic hot water system, an
anti freeze kit with an electrical resistance can
be fitted from the relative cable and from a
control thermostat.
Kits are supplied complete with instructions for
their assembly and use.