Immergas INTEC 30 System External User Manual

23
INSTALLERUSER
MAINTENANCE TECHNICIAN
3.16 APPLIANCE CHECK AND
MAINTENANCE.
e following checks and maintenance should
be performed every 24 months.
- Clean the ue side of the heat exchanger.
- Clean the main burner.
- If deposits are detected in the combustion
chamber one must remove them and clean the
heat exchanger coils using nylon or sorghum
brushes; it is forbidden to use brushes made of
metal or other materials that may damage the
combustion chamber itself.
- Check the integrity of the insulating panels
inside the combustion chamber and if damaged
replace them.
- Visually check for water leaks or oxidation
from/on fittings and traces of condensate
residues inside the sealed chamber.
- Check contents of the condensate drain trap.
- Via the condensate drain cap check that there
are no residues of material that clog condensate
passage; also check that the entire condensate
drain circuit is clear and ecient.
In the event of obstructions (dirt, sediment,
etc.) with consequent leakage of condensate
in the combustion chamber, one must replace
the insulating panels.
- Check that the burner seal gaskets and the lid
are intact and perfectly ecient, otherwise
replace them. In any case the gaskets must be
replaced at least every two years, regardless of
their state of wear.
- Check that the burner is intact, that it has no
deformations or cuts and that it is properly
xed to the combustion chamber lid; otherwise
it must be replaced.
- Visually check that the water safety drain valve
is not clogged.
- Check that, aer discharging system pressure
and bringing it to zero (read on boiler pressure
gauge), the expansion vessel pressure is at 1.0
bar.
- Check that the system static pressure (with
system cold and aer relling the system by
means of the lling valve) is between 1 and 1.2
bar.
- Visually check that the safety and control
devices have not been tampered with and/or
shorted, in particular:
- temperature safety thermostat;
- Check the condition and integrity of the electri-
cal system and in particular:
- supply voltage cables must be inside the
fairleads;
- there must be no traces of blackening or
burning.
- Check ignition and operation.
- Check correct calibration of the burner in
domestic hot water and central heating phases.
- Check the operation of the appliance control
and adjustment devices and in particular:
- system regulation probes intervention;
- domestic hot water control thermostat inter-
vention.
- Check sealing eciency of the gas circuit and
the internal system.
- Check the intervention of the device against
no gas ionisation ame control. e relative
intervention time must be less than 10 seconds.
N.B.: in addition to maintenance, one must also
check the thermal system, with frequency and
procedures that comply with the indications of
the technical regulations in force.
3.17 COMBUSTION PARAMETERS.
INTEC 12 SYSTEM EXTERNAL NG (G20) Universal LPG (G31)
Gas nozzle diameter mm 3,80 2,80
Supply pressure kPa 1,13 2,75
Flue ow rate at nominal heat output kg/h 19 19
Flue ow rate at min heat output kg/h 4 4
CO
2
at Nom Q./Min. % 9,60 / 8,90 11,00 / 10,30
CO with 0% O
2
at Nom Q /Min. - 0,00125 / 0,00003 0,00173 / 0,00003
NO
X
with 0% O
2
at Nom Q /Min. mg/kWh 30 / 13 35 / 17
Flue temperature at nominal output °C 63 64
Flue temperature at minimum output °C 60 62
INTEC 30 SYSTEM EXTERNAL NG (G20) Universal LPG (G31)
Gas nozzle diameter mm 6,90 4,80
Supply pressure kPa 1,13 2,75
Flue ow rate at nominal heat output kg/h 48 49
Flue ow rate at min heat output kg/h 10 10
CO
2
at Nom Q./Min. % 9,45 / 8,90 10,60 / 9,70
CO with 0% O
2
at Nom Q /Min. - 0,00153 / 0,00001 0,00160 / 0,00003
NO
X
with 0% O
2
at Nom Q /Min. mg/kWh 51 / 17 61 / 25
Flue temperature at nominal output °C 40 40
Flue temperature at minimum output °C 64 63

Immergas INTEC 30 System External Specifications

General

Brand	Immergas
Model	INTEC 30 System External
Category	Boiler
Language	English