44
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Once all boiler connections have been completed, CH system can be filled.
The procedure is to be cautiously carried out, following each step:
- open the air purging valves on all radiators and verify the boiler automatic valve operation;
- gradually open the relevant filler cock (fig. 2 for models CTN and CTFS, or the cock on the cold water supply pipe for models RTN and RTFS),
checking any automatic bleeding valves installed in the system properly work;
- close all radiator air purging valves as soon as water starts coming out;
- check boiler water pressure gauge not to exceed 1÷1.3 bars reading;
- shut the filler cock (for models CTN and CTFS, or the cock on the cold water supply pipe for models RTN and RTFS) and bleed any air out again, by
opening the air bleeding valves on radiators;
- start the boiler and bring the system to working temperature, stop the pump, and repeat air bleeding procedure;
- allow the system to cool and restore water pressure to 1÷1.3 bars.
WARNING
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WARNING
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for models CTN and
CTFS, or the cock on the cold water supply pipe for models RTN and RTFS)
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WARNING
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following procedure:
- unscrew the protective cap at the centre of the pump motor;
- put a screwdriver into the hole and manually rotate the circulation pump shaft clockwise;
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Before starting the boiler, check that:
- the flue gas venting duct and the relevant terminal are installed in conformity with the instructions:
with the boiler operating, there must be no
leakage of combustion by-products from any of the gaskets
;
- the supply power to the boiler must be 230 V – 50 Hz;
- the system is correctly filled with water (pressure gauge reading 1 to 1.3 bar);
- any shut-off cocks in the system pipes are open;
- the mains gas type is correct for the boiler calibration: convert the boiler to the available gas if necessary (see section 3.7.
Adaptation to other gas
types
): have this operation carried out by qualified technical personnel;
- the gas supply cock is open;
- there are no fuel gas leaks;
- the main switch installed ahead of the boiler is turned on;
- the 3-bar safety valve is not stuck;
- there are no water leaks;
- the pump has not seized.
WARNING
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To switch the boiler on and off, refer to the “
Instructions for the User
”.
Содержание FORMENTERA CTFS 32
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