38
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Gas supply pipe cross-section must be equal or greater than boiler gas pipe.
Cross-section gas pipe size depends on its length, layout pattern, gas flow rate. Gas pipe size is to be selected accordingly.
Comply with installation standards enforced in the country where the boiler is installed which are considered as fully transcribed in this
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Remember that before operating an indoor gas distribution system and before connecting it to a meter, it must be checked for
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fig. 19
Gasket
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Prior to installing the boiler, the hydraulic system is to be cleaned in order to remove impurities; they could be present in system components and
damage the pump and the heat exchanger.
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The CH outlet and return pipes must be connected to the respective 3/4” connectors
M
and
R
on the boiler (fig. 11).
When calculating the cross section of CH system pipes, bear in mind load losses induced by radiators, thermostatic valves, radiator gate valves, and
the configuration of the system itself.
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Cold water inlet and DHW outlet shall be connected to the boiler through the special 1/2”
C
and
F
fittings (fig. 11).
Hardness of water supplied to the boiler may increase the plate heat exchanger cleaning/replacement intervals.
Depending on the hardness of the mains water supply, ascertain whether or not to install appropriate domestic water treatment
systems using water treatment products suitable for drinking water and compliant with the standards in force in the country of
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Coaxial pipe system
In order to verify combustion efficiency the following measurements must be implemented:
- assess combustion air from opening 2 (fig. 18 A).
- assess flue gas temperature and CO
2
from opening 1 (fig. 18 A).
Allow boiler to reach working temperature before taking any measurement.
Split pipe system
In order to verify combustion efficiency the following measurements must be implemented:
- assess combustion air from opening 2 (fig. 18 B).
- assess flue gas temperature and CO
2
from opening 1 (fig. 18 B).
Allow boiler to reach working temperature before taking any measurement.
fig. 18
Summary of Contents for FORMENTERA CTFS 32
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