36
INS
TALLER
US
ER
MAINTEN
AN
CE TECHNI
CI
AN
31
1.30 BOILER COMPONENTS.
Key:
1 - System expansion vessel
2 - Burner
3 - Ignition/detection electrode
4 - Air intake pipe
5 - Flow probe
6 - Fan
7 - Condensate drain trap
8 - D.H.W. flow switch
9 - Gas nozzle
10 - Gas valve
11 - DHW heat exchanger
12 - System draining valve
13 - DHW probe
14 - Sample points (air A) - (flue gases F)
15 - Flue probe
16 - Condensation module
17 - Venturi
18 - Return probe
19 - System pressure switch
20 - Air vent valve
21 - Boiler pump
22 - 3 bar safety valve
23 - Bypass
24 - 3-way valve (motorised)
25 - Valve drain fitting signal
26 - System filling valve
1.31 KITS AVAILABLE ON REQUEST.
•
System shut-off valve kits with or without inspection filter
(on request).
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 mainte-
nance as it allows the boiler to be drained separately without
having to empty the entire system. Moreover, the version with
filter preserves the operating features of the boiler thanks to its
inspectionable filter.
•
Polyphosphate dispenser kit (on request).
The polyphosphate
dispenser reduces the formation of lime-scale and preserves the
original heat exchange and domestic hot water production condi-
tions. The boiler is prepared for application of the polyphosphate
dispenser kit.
N.B.:
this is a type of chemical conditioning treatment for do-
mestic hot water, if provided for by current regulations.
•
Cover kit (on request).
If installed outdoors in a partially pro-
tected place with direct air intake, it is compulsory to mount the
appropriate top protective cover for the correct functioning of
the boiler and to protect it from adverse weather conditions.
•
Cycloidal filter kit (on request).
The magnetic cycloidal filter is
able to detect the ferrous residues present in the system's water.
Thanks to the two cocks in the kit, it facilitates maintenance by
cleaning the filter without having to empty the circuit.
The above-mentioned kits are supplied complete with instructions
for assembly and use.
