Ferroli MACH Instrucciones De Uso página 311

MACH
Also, a filter must be installed on the system return piping to prevent impurities or
B sludge from the system clogging and damaging the heat generators.
The filter must be installed when replacing generators in existing systems. The ma-
nufacturer declines any liability for damage caused to the generator by failure to
install or inadequate installation of this filter.
Make the connections to the corresponding connections according to the drawing in fig. 36.
7
10
a4
11
fig. 36
System water characteristics
Before installing the MACH generator, the new or existing system must be properly cleaned in order to eliminate insta-
llation residues, solvents, sludge and contaminants in general that may compromise the effectiveness of the protective
conditioning treatments. Use neutral cleaning products that do not attack metals, rubber and plastic parts of the gene-
rator/system. Empty, wash and recharge the system in compliance with the following instructions. A dirty system will not
guarantee the life of the generator over time, even with the use of protective conditioners.
MACH boilers are suitable for installation in heating systems with non-significant
B
entry of oxygen (ref. systems "case I" EN14868). A physical separator (e.g. plate
heat exchanger) must be provided in systems with continuous entry of oxygen (e.g.
underfloor systems without anti-diffusion pipes or open vessel), or frequent (fre-
quent water replenishment).
The water in a heating system must be treated in compliance with the laws and re-
gulations in force, have the characteristics required by UNI 8065, and comply with
the provisions of EN14868 (protection of metallic materials against corrosion).
The filling water (first filling and subsequent replenishments) must be potable, clear, with hardness under the values
indicated in the table below and treated and conditioned with chemical conditioners declared suitable by the maker (see
following list), in order to prevent encrustations, corrosive or aggressive phenomena on the metals and plastics of the
generator and system, the formation of gas, and the proliferation of bacterial or microbial masses in low temperature
systems.
The water contained in the system, as well as the replenishment water, must be checked periodically (at every start-up
of the system, after any non-scheduled intervention such as, for example, replacement of the generator or other system
EN
Table 2- SIZE OF CONNECTIONS
10 - System flow
11 - System return
7 - Gas inlet
a4 - Flue connection
cod. 3541V120 - Rev 00 - 09/2021
DN65 flanged
DN65 flanged
DN40 flanged
Ø200
311