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Instructions for the installer
3.8 Connection to gas mains
Cross-section gas pipe size must be chosen depending on its length, layout pattern, gas flow rate.
Gas supply pipe cross-section must be equal or greater than boiler gas pipe.
DANGER
Comply with installation standards enforced in the country where the boiler is installed which are considered as fully transcribed
in this booklet.
Remember that before operating an indoor gas distribution system and before connecting it to a meter, it must be checked for
leaks.
If some system parts are not visible, the leak test is to be carried out before the pipes are covered.
Leak test is NOT to be carried out employing flammable gas: use air or nitrogen for this purpose.
Once gas is in the pipes, leak test by a naked flame is forbidden; use specific products available on the market.
When connecting the boiler to gas supply network, it is COMPULSORY to install an appropriately sized gasket (A) made from
suitable material (see Fig. 16 Connection to gas mains).
The boiler gas inlet coupling is NOT suitable for hemp, teflon tape or similarly made gaskets.
A
Fig. 16 Connection to gas mains
3.9 Hydraulic connections
3.9.1
Central heating
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.
The CH outlet and return pipes must be connected to the respective 3/4” connectors M and R on the boiler (see Fig. 8 Paper template).
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.
WARNING
As for water treating in the domestic heating systems in order to optimise efficiency and safety, ensure a long life, trouble-free
operation of auxiliary equipment, minimise power consumption, thereby integrating the standards and rules in force in the
country of installation, it is recommended to use specific products suitable for multi-metal heating systems.
The water pH value must be between 7 and 8.
WARNING
It is advisable to convey the discharge flow of boiler safety valve to the sewer system. Should the above precaution not be
implemented and the safety valve be activated, boiler room flooding may occur.
The manufacturer shall not be held responsible in case of damage to people, animals, or property due to failure to follow the above
mentioned instructions.
Summary of Contents for minorca kr
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