Nova Florida ALTAIR RTN 18, Инструкция по установке, эксплуатации и обслуживанию

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3.6 Gas conversions
Changing a boiler over from natu-
ral gas to LPG and vice versa is
only to be carried out by qualified
personnel.
To check the setting values for the
nozzles and gas supply pressure,
use a pressure gauge connected to
the pressure sockets on the valves.
3.6.1 Conversion from natural gas
to LPG
Proceed as follows:
• Remove the natural gas nozzle
from the pilot burner after having
unscrewed the nut that holds the
olive and vent the gas supply pipe to
the pilot burner.
• Position the LPG nozzle checking
that it is as indicated in the technical
data table, and after repositioning
the gas supply pipe tighten the nut
that secures the olive.
• Remove the natural gas nozzle on
the main burner and fit the LPG
nozzle, checking that this is as indi-
cated in the technical data table.
• Unscrew the pressure regulating
cap on the gas valve and tighten the
pressure regulating screw all the
way.
• Screw the pressure regulating cap
back on and seal it (using paint or a
self-adhesive label, for example).
NOTE: for models RTN E 60 to
RTN E 100 the regulating opera-
tions must be carried out on both
gas valves.
• Check the gas circuit for leaks,
especially the points that were dis-
connected.
• Affix the self-adhesive label provi-
ded that indicates the type of gas
and pressure for which the equip-
ment is set.
3.6.2 Conversion from LPG to
natural gas
Proceed as follows:
• Remove the LPG nozzle from the
pilot burner after having unscrewed
the nut that holds the olive and vent
the gas supply pipe to the pilot bur-
ner.
• Position the natural gas nozzle
checking that it is as indicated in the
technical data table, and after repo-
sitioning the gas supply pipe tighten
the nut that secures the olive.
• Remove the LPG nozzle on the
main burner and fit the natural gas
nozzle, checking that this is as indi-
cated in the technical data table.
• Unscrew the pressure regulating
cap on the gas valve and unscrew
the pressure regulating screws so
that the pressure at the outlet is as
specified in the technical data table.
• Screw the pressure regulating cap
back on and seal it (using paint or a
self-adhesive label, for example).
NOTE: for models RTN E 60 to
RTN E 100 the regulating opera-
tions must be carried out on both
gas valves, taking care to balance
them correctly.
• Check the gas circuit for leaks,
especially the points that were dis-
connected.
• Affix the self-adhesive label provi-
ded that indicates the type of gas
and pressure for which the equip-
ment is set.
4. MAINTENANCE
In order to ensure that the equipment
is efficient and that it functions cor-
rectly, maintenance must be carried
out annually, based on the program-
me laid out below:
It is obligatory for all maintenance
(and repair) operations to be car-
ried out by qualified personnel.
Before starting any maintenance
work that involves replacing com-
ponents and/or cleaning the inside
of the boiler, disconnect the equip-
ment from the electrical power
supply.
Maintenance programme
Routine maintenance must include
the following checks :
- Check of the general integrity of the
boiler.
- Checking the gas supply to the boi-
ler for leaks.
- Checking ignition of the boiler.
- Checking the boiler’s combustion
parameters by analysing the smoke
(this check is done every two years if
the boiler is installed on its own.
Where the boiler is installed in a
cascading system, this check is run
annually).
- Checking the integrity, good state
of preservation, and tightness test on
the smoke flue.
- Checking the integrity of safety
devices on the boiler in general.
- Checking for water leaks and
rusting on the boiler’s couplings.
- Checking the efficiency of the
system’s safety valve.
The following cleaning is to be
done (with the boiler cold):
- General internal cleaning of the
boiler.
- Cleaning of the burner and reset-
ting of the same if necessary, as per
instructions provided by the manufac-
turer.
- Cleaning of the ventilation grille for
the boiler room.
- Cleaning of the smoke side of the
heat exchanger. This can be done
using swabs and vacuum cleaners to
remove soot deposits on the sides
and fins used for exchanging heat.
Alternatively specific chemical pro-
ducts can be used in compliance with
the instructions for use of the same.
Do not use inflammable products
such as petrol, solvents or any
other such material to clean the
heat exchanger.
When working on the boiler for the
first time, check:
- The declaration of conformity for
the plant.
- The plant handbook.
Also check:
- The suitability of the boiler room.
- The ventilation openings in the
room.
- The smoke evacuation flues, and
the diameters and lengths of these.
- That the boiler has been correctly
installed as per instructions contained
in this booklet.
If the equipment is not able to work
correctly, or where it poses any
danger to people, animals or pro-
perty, inform the person responsi-
ble for the plant and draw up a sta-
tement in this regard.
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