40
STV50 ed 09/08 VICTRIX 50 Rev. 002
ISPESL safety kit for a single boiler (optional).
With this kit you comply with the ISPESL standards on the
matter of safety in systems with powers higher than 35 kW.
e safety devices and checks consist primarily in an ISPESL
approved thermometer (5), an ISPESL approved manually
reset thermostat (6) and an ISPESL approved manually reset
pressure switch (7).
e contacts of the thermostat (6) and pressure switch (7)
must be installed electrically in series with the boiler’s power
input.
e stub pipes, which are part of the kit, are connected directly
to the boiler’s ow and return pipes with O rings (1).
On the system ow stub pipe it is also possible to mount a
thermometer holder housing device (2) and the probe for the
gas shut-o valve (3). e kit also includes an ISPESL type
approved manometer holder cock element (4) and a ISPESL
approved manometer (12), complete with water hammer
reducing loop (11).
e system return stub pipe, on the other hand, is set for the
connection of an expansion tank that has to be suitable for
system requirements.
Kit 3-way diverter valve for coupling the exter-
nal storage tank (optional).
With this kit the VICTRIX 50 boiler can be connected - if
wanted - to an external storage tank for the production of
domestic hot water.
e stub pipes in this kit are connected directly to the boiler’s
ow and return pipes with O rings (1).
e 3-way diverter valve (4), with electric motor (5), is installed
on the return stub pipe.
To electrically connect the 3-way diverter valve motor and do-
mestic hot water probe (B2) see the boiler wiring diagram.
Distribution manifold kit (optional).
With this kit the circulation of water can be increased through
the system, resulting in a more exible installation even in the
case of big systems or where the water content is very high.
e distribution manifold (2) is connected directly to the
boiler’s ow and return pipes with O rings (1).
A brass lter is installed on the return pipe to collect sludge
(6).
G1"
4
1
5
6
G1"1/2
G1"1/2
1
G1"1/2
G1"
2
A
B
A
B
G1"
G1"
G1"
3
1
2
3
4
5
6
7
G1"1/2
G1"1/2
G1"1/2
G1"1/2
G3/4"
1
10
11
12
Technical DocumentationTechnical Documentation
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