baltur GI MIST 350 DSPGM User manual

- Instruction for burners model
Edition
2005/10
Cod. 0006080103
en
GI MIST 350 DSPGM
GI MIST 420 DSPGM
GI MIST 510 DSPGM

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Manufacturer’s declaration
We hereby declare that our gas, light oil, heavy oil, and combination (gas/light oil or gas/heavy oil) burners
are manufactured in conformance with current CE, CEI and UNI standards.
• BALTUR guarantees the “CE” certifi cation provided that the burner is coupled to the “CE” gas train supplied
by BALTUR and the “CE” gas line accessories (on request).
NOTE: this declaration is not valid with regard to EC or UNI Standards for gas burners or the gas part of duel-
fuel burners (gas/light oil or gas/heavy oil) when such burners have been ordered in non-compliance with the
EC Standard or Italian UNI Standard because they are to be used for special purposes not provided for in the
above-mentioned standards.
L’ Amministratore delegato
Dott. Riccardo Fava
- The works on the burner and on the system have to be carried out only by competent people.
- Read carefully the instructions before starting the burner and service it.
- The system electric feeding must be disconnected before starting working on it.
- If the works are not carried out correctly it is possible to cause dangerous accidents.

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INDEX PAGE
- Technical data “ 4
- Gas train assembly diagram - Fastening the burner to the boiler - Electrical connections “ 8
- Gas feed system at average pressure “ 9
- Fuel feed system (light oil) “ 11
- Description of operations two stage progressive with light oil “ 13
- Description of operations modulating with light oil “ 14
- Description of operations two stage progressive with natural gas “ 18
- Description of operations modulating with natural gas “ 19
- Starting up and regulation with light oil “ 21
- Regulation of the combustion head “ 23
- Starting up and regulation with methane gas “ 25
- Regulation of the combustion head “ 28
- Reading gas (methane) meter “ 30
- Use of the burner - Maintenance “ 31
- The gas valve unit “ 32
- Details of the modulation control motor SQM “ 35
- Gas burner control devices “ 36
- LDU 11 Gas valve tightness control equipment “ 41
- Notes on use of propane (L.P.G.) “ 43
- Electric wiring diagram “ 45

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N° 0002670222
Rev. 24/10/2005
GI mist 350 DSPGM GI mist 420 DSPGM GI mist 510 DSPGM
THERMIC CAPACITY MAX kW 4743 5522 6500
MIN kW 1581 1840 2430
FLOW RATE MAX m³/h 478 556 654
MIN m³/h 160 186 245
PRESSURE (In order to obtain the
maximum fl ow rate)
MIN mbar 200 200 200
NATURAL GAS TRANSFORMER 8 kV - 20 mA 8 kV - 20 mA 8 kV - 20 mA
THERMIC CAPACITY MAX kW 4743 5522 6500
MIN kW 1581 1840 2430
FLOW RATE MAX kg/h 400 466 548
MIN kg/h 134 156 205
FUEL VISCOSITY 1,5°E a/at 20°C 1,5°E a/at 20°C 1,5°E a/at 20°C
LIGHT OIL TRANSFORMER 14 kV - 30 mA 14 kV - 30 mA 14 kV - 30 mA
VOLTAGE Volt 3N - 230/400 - 50Hz 3N - 230/400 - 50Hz 3N - 230/400 - 50Hz
FAN MOTOR kW 15 - 50Hz 18,5 - 50Hz 18,5 - 50Hz
PUMP MOTOR kW 2,2 - 50Hz 2,2 - 50Hz 3 - 50Hz
STANDARD ACCESSORIES GI mist 350 DSPGM GI mist 420 DSPGM GI mist 510 DSPGM
BURNER FIXING FLANGE 1
INSULATING GASKET 2
FILTER N°1 - 1”1/2
FLEXIBLES PIPE N°2 - 1”1/2 x 1”1/2
STOD BOLTS N°6 M20
EXAGONAL NUTS N°6 M20
FLAT WASHERS N°6 Ø20
NATURAL GASLIGHT OIL
TECHNICAL DATA
1) Pump
2) Modulator
3) Air pressure switch
4) Gas pressure switch min.
5) Gas pressure switch max.
6) Butterfl y
7) Pilot main valve
8) Pressure switch for the valve tightness control
9) Main valve
10) Safety valve
11) Electric board
12) Pump motor
13) Combustion head air control knob
14) Burner fi xing fl ange
15) Gasket
16) Combustion head
17) Fan motor
18) Electromagnet

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N° 0002670222
Rev. 24/10/2005
TECHNICAL DATA
MOD. A A1 A2 B B1 B2 B3 C D D E F G L M N
MIN MAX Ø Ø Ø Ø
GI mist 350 DSPGM 1345 660 685 1585 750 835 545 1970 230 600 355 325 DN65 480 M20 375
GI mist 420 DSPGM 1345 660 685 1530 750 780 490 2030 320 625 400 355 DN65 520 M20 420
GI mist 510 DSPGM 1345 660 685 1540 750 790 495 2030 320 625 400 355 DN80 520 M20 420
N° 0002921292
Rev.
WORKING FIELD

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FASTENING THE BURNER TO THE BOILER
The burner must be applied to the boiler’s iron plate, where the stud bolts given as standard accessories have
already been fi tted in accordance with the plate drilling. It is advisable to electrically weld the stud bolts to the
internal part of the plate to avoid extracting them together with the unit’s locking nuts, should the burner disas-
sembled. To fi t the insulating fl ange between the burner and the boiler plate, remove the end section of the
combustion head.
The relative nuts and washers required for connecting the burner to the boiler have been supplied as standard
accessories. The unit is equipped with a cylindrical combustion head; it is advisable to fasten the boiler’s iron
plate fi rst and then the burner. When the boiler door is not fi tted with heat insulation, it is necessary to insert an
insulating protection at least 10 mm. thick between the plate and the boiler.
The boiler plate should be according to our drawing and have a minimum thickness of 10 mm. in order to avoid
possible deformation. Before fastening the burner to the boiler, put the sliding fl ange in the position considered
necessary to allow the burner head to penetrate the combustion chamber as far as required by the boiler ma-
nufacturer. When this operation has been completed, connect the burner to the gas pipeline according to the
instructions contained in the following pages.
MOUNTING INSTRUCTIONS FOR ADJUSTABLE STAND N° 0002934500
Rev. 21/02/2005
- Insert theadjustable stand in the hole
located in the bottom part of the burner
case as shown in the sketch

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GAS TRAIN ASSEMBLY DIAGRAM
ELECTRICAL CONNECTIONS
The three-phase or single-phase electric supply line of the minimum section, in proportion to the power absorbed
by the burner, must be equipped with a fused switch. Furthermore, regulations require a switch on the burner’s
feed line which should be located outside the boiler room in an easily accessible position. All electric lines must
be protected by fl exible sheaths, be fi rmly secured and be laid a long way from high temperature parts.
For the electrical connections (line and thermostat) see the relevant diagram.
N° 8807
Rev.

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GAS FEED SYSTEM AT AVERAGE PRESSURE (a few bars)
(see BT 8058 - BT 8530/1 - BT 8531/1)
When high delivery is required, the Gas Distributing Company requests the installation of a unit comprising a
pressure reducer and a meter, and then connects it to the gas pipe network at average pressure (a few bars).
This unit can be supplied by the Gas Distributing Company or by the user, but should be according to the Gas
Company’s precise instructions. The unit’s pressure reducer should be large enough to supply the maximum
gas delivery required by the burner at the rate of pressure normally estimated for it.
From experience, we would recommend utilizing a
large-scale reducer in order to attenuate the notable
increase in pressure which occurs when the burner
comes to a standstill, with a high delivery. (Regula-
tions require that the gas valves close in less than
one second).
As an indication, we would advise using a reducer ca-
pable of producing a delivery (m3/h) about double that
of the maximum amount estimated for the burner.
If several burners are to be used, each one should
have its own pressure reducer; this will enable the
gas feed pressure to the burner to be maintained at
a constant level even if only one burner is operating
at the time. Consequently, it is possible to accurately
regulate the delivery and therefore the combustion,
and thus improve yield.
The dimension of the gas pipeline should be in function
with the quantity of gas it has to deliver. We advise
maintaining the load loss at a low level (not more
than 10 % of the gas pressure value at the burner); it
should be kept in mind that the load loss is added to
the pressure existing when the burner stops and the-
refore a subsequent start up will occur at a pressure
that rises in accordance with an increase in the pipe’s
load loss. Should the gas pressure reach unaccep-
table values when the burner stops (rapid closure of
the gas valves), it is necessary to install between the
reducer and the fi rst valve of the burner an automatic
overfl ow valve and relative conveying pipe, of suitable
section, in the open air. The end of the conveying pipe
in the open air should terminate in a suitable place, be
protected from rain and have a fl ame trap.
The overfl ow valve should be regulated in such a way
as to completely unload excessive pressure.
See diagram n° BT 8058 for gas pipeline dimensions.
Near to the burner should also be fi tted a cut-off ball
cock, a gas fi lter, an anti-vibration joint and a fl anged
fi tting (see BT 8530/1 and BT 8531/1).
DIAGRAM FOR CALCULATING THE DIAMETER OF THE
PIPES IN RELATION TO THEIR LENGTH AND GAS FLOW
N° BT 8058
DIAMETER OF PIPES IN INCHES
PRESSURE DROP IN mm OF H2O
LENGTH OF PIPES IN METERS
FLOW IN mc/h OF METHANE p.a. 0,60

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DIAGRAM OF CONNECTING MORE THAN ONE BURNER TO THE
GAS PIPE NETWORK AT AVERAGE PRESSURE
1 - Measuring and reducing unit
2 - Interception
3 - Filter
4 - Reducer
5 - Meter
6 - Emergency interception (installed outside)
7 - Ball cock
8 - Filter
9 - Final reducer or stabilizer
10- Anti-vibration joint
11- A couple of fl ane
D = Distance between pressure stabilizer and valve about 1,5 ÷ 2 m
DIAGRAM OF CONNECTING A BURNER TI THE GAS PIPE NETWORK
AT AVERAGE PRESSURE
1 - Measuring and reducing unit
2 - Interception
3 - Filter
4 - Reducer
5 - Meter
6 - Wire gauze fl ame trap
7 - Eventual automatic overfl ow valve (it should obviously
unload outside in a suitable place)
8 - Emergency interception installed outside
9 - Ball cock
10- Anti-vibration joint
11- A couple of fl ange
N° 8530-1
Rev. 15/11/90
N° 8531-1
Rev. 15/11/90

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FUEL FEED SYSTEM (LIGHT OIL)
The burner pump should receive fuel from a feed circuit which has an ancillary pump and, in some cases, a
pressure regulator capable of modifying the pressure value 0,2 to 1 bar (see drawing 0002901120).
In this case, the value of the fuel feed pressure at the burner pump (0,2 ÷ 1 bar) should not vary when the burner
is at a standstill or when it is operating at the maximum fuel delivery required by the boiler. Normally it is possible
to realize a circuit without a pressure regulator as shown in drawing n° BT 8666/3.
The feed circuit must be realized according to drawing 0002901120 or to drawing BT 8666/3.
The dimension of the pipelines should be in function with their length and with the output of the pump utilized.
Our instructions cover the basic requirements needed to ensure effi cient operations.
All rules and regulations existing in the country of installation should be strictly complied with and the local fi re
brigade should be consulted.
FURTHER INSTRUCTIONS TO START A MIXED BURNER
It is advisable to fi rst carry out the starting with the liquid fuel because in this case the delivery is conditioned by the
available nozzle whereas the delivery of methane be varied as you like by working on its delivery regulator.
N° 0002901120
Rev. 19/02/2002
MAIN HYDRAULIC DIAGRAM TO FEED WITH PRESSURE SEVERAL BURNERS
AT TWO FLAMES OR MODULATING ONES OPERATING AT LIGHT OIL OR
HEAVY OIL WITH MAX. NOMINAL VISCOSITY OF 5 °E AT 50 °C
1 - Main tank
2 - Filter
3 - Circulation pump
4 - Water outlet and circuit
5 - Air/gas outlet usulally closed
6 - Degasifi erand combustion recovery tank
7 - No return valve
8 - By pass
9 - Return pressure regulator (0,2÷1 bar)
10 - Pressure gauge (0÷4 bar)
The light oil recovery tanks
(diameter 150 mm height 400 mm) should be
installed as near as possible to the burner and
should be about 0,5 m. higher with respect to
the burner’s pump.