INSTRUCTIONS FOR THE FIRST TIME IN SERVICE
RK 100 - RAD - ING - MAN.INST - 1311.1 - DIGITECH CS MIAH4
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4. COMMISSIONING THE APPLIANCE
4.1 General warnings
The following operations must be carried out by professionally qualified personnel, registered in
accordance with current legislation and authorised by Radiant Bruciatori s.p.a.
The boiler leaves the factory pre-set and tested for burning natural Gas. Nevertheless, when starting
the boiler for the first time, make sure that the information on the rating plate corresponds to the type
of gas being supplied to the boiler.
It is recommended that the system is hot-flushed to remove any impurities (especially oil and grease)
that might compromise the proper working operation of the heating unit, from the pipes and radiators.
Once the system has been filled and the necessary adjustments made, remember to tighten the
screws of the gas valve test point and make sure that there are no gas leaks from the test point and
from any pipe fittings upstream of the gas valve.
4.2 Preliminary
operations
Switching the boiler on for the first time means checking that the installation, regulation and operation of the
appliance are correct:
If the gas supply system is newly installed, then the air present in the pipes can cause the boiler not to light at
the first attempt. A number of attempts may be required in order to light the boiler;
Check that the data on the data plate corresponds to that of the mains supply networks (gas, electricity, water);
Check that the power supply voltage to the boiler complies with the data plate (230 V – 50 Hz) and that the live,
neutral and earth wires are connected properly. Also make sure that the earth connection is sound;
Check the seals on the gas supply pipe from the mains, and make sure that the meter does not register any flow
of gas;
Open the gas feed valve and make sure that there are no gas leaks from pipe fittings upstream of the boiler (the
burner’s gas connection must be checked with boiler in function);
Check that the gas supply is correctly sized for the flow rate required by the boiler and that it is fitted with all the
safety and control devices as lay down by current regulations;
Check that the supply of combustion air and exhaust and condensate discharge systems are functioning
correctly and in line with current law and national and local standards;
Check for the presence of permanent aeration/ventilation openings as required by current law for the type of
appliances installed;
Check that the flue duct and its connections to the terminal/chimney comply with the requirements of current law
and national and local standards for the type of appliances installed;
Make sure that any central heating shut-off valves are open;
Check that the boiler is sloped of 3°/4° toward the back side. Check that the condensate drain system, including
outside the boiler (flue system condensate collection devices), allows the condensate to flow freely to the
collection devices. If the condensate is discharged to the domestic drainage system, install an inspection trap in
the condensate system prior to it entering the drainage system to interrupt the continuity between the two
systems;
Check that there are no exhaust fumes discharged into the system itself;
Check that there are no flammable materials or liquids in the immediate vicinity of the boiler;
Check that circulating pumps freely rotate. Unscrew the inspection screw and verify with a flat screwdriver that
the impeller works without obstructions. Prior to loosen or remove the circulating pump cap, protect the electrical
devices below from possible leaks of water.
