Fondital TAHITI CONDENSING KC24, Инструкция по установке, эксплуатации и обслуживанию

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3.2.8. Gas main connection
Gas supply pipe cross-section must be equal or greater than boiler gas pipe. Cross-section gas pipe size calculation depends on its
length, layout pattern, gas flow rate. Gas pipe size is to be dimensioned accordingly.
Comply with installation standards enforced in the installation country 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.
Adhere to the following leak test instructions:
- leak test is to be carried out before pipes are covered;
- leak test is not to be carried out employing flammable gas: use air or nitrogen for this purpose;
- when gas is already in the pipes supplying the boiler, leak testing by naked flame is forbidden, use specific products
available on the market.
When connecting the boiler to gas supply network, install an appropriately sized and made gasket (pic. 16).
The boiler gas inlet thread configuration is not appropriate for hemp, plastic tape or similarly made gaskets.
3.2.9. Hydraulic connections
Prior to installing the boiler, the hydraulic system is to be cleaned in order to remove impurities; they could be present in system compo-
nents and damage the pump and the heat exchanger.
CENTRAL HEATING
CH flow and CH return pipes must be connected to the relevant 3/4” M and R couplings on the boiler (pic. 6).
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.
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.
Manufacturer shall not be held responsible for any damage resulting as failure in observing the above mentioned technical
precaution.
DOMESTIC HOT WATER
DHW flow and water mains inlet pipes are to be connected to the relevant 1/2” C and F couplings on the boiler (pic. 6).
Hardness of water supplied to the boiler may increase the plate heat exchanger cleaning/replacement frequency.
Depending on hardness level of the water supplied, it might be necessary installing a suitable water treatment device
for domestic use and in compliance with applicable laws and standards.
Water treatment is always advisable when water supplied to the boiler is more than 20°F hard.
Water treated by commonly marketed water softeners, due to PH level induced in water, may not be compatible with
some components in system.
pic. 16 - Gas mains connection
GASKET