Riello 519T80 Quick start guide

2915859 (3) - 02/2010
Installation, use and maintenance instructions
Forced draught gas burner
Code Model Type
3751982 GAS 3 519T80

DECLARATION
Declaration of conformity in accordance with ISO / IEC 17050-1
Manufacturer: RIELLO S.p.A.
Address: Via Pilade Riello, 7
37045 Legnago (VR)
Product: Forced draught gas burner
Model: GAS 3
These products are in compliance with the following Technical Standards:
EN 676
EN 292
and according to the European Directives:
MD 98/37/EEC - 2006/42/EC Machine Directive
LVD 73/23/EEC - 2006/95/EC Low Voltage Directive
EMC 89/336/EEC - 2004/108/EC Electromagnetic Compatibility
The quality is guaranteed by a quality and management system certified in accordance with UNI EN ISO
9001.
Legnago, 22.02.2010 Mr. G. Conticini
Burners Division Department
RIELLO S.p.A.

5859
1
TECHNICAL DATA
BURNER DESCRIPTION
OVERALL DIMENSIONS
Thermal output 130 - 340 kW - 112,000 - 292,000 kcal/h
Fuel Natural gas Pci 8 - 10 kWh/m3= 7000 - 8600 kcal/m3
Minimum gas pressure For maximum output 11,1 mbar are needed measured at the coupling with nil pressure in the combustion chamber and gas with calorific value of
8600 kcal/m3
Maximum gas pressure 150 mbar
Electrical supply Single phase 220 V + 10% - 10% ~ 60Hz
Motor 1.85A / 220V
Capacitor 6.3 µF
Ignition transformer Primary: 1.8A / 220V - Secondary: 1 x 8 kV - 30 mA
Absorbed electrical power 0.4 kW
1– Air shutter control
2– Air shutter lock-nut
3– Wiring terminal block
4– Fair leads
5– Control box re-set button
6– Air pressure switch
7– Gas pressure test-point
Fig. 1
76
3
4
5
21
S7495
Boiler front-plate
drilling Burner
160
160
155 M10
D1785
410 610185
*320
397
97
292
165
ø 140
Rp 1 1/2
S7497 S7498
*Length available with special blast tube to be separately required.

5859 2
STANDARD EQUIPMENT
ACCESSORIES
• RADIO DISTURBANCE PROTECTION KIT code 3010386
If the burner is installed in places particularly subject to radio disturbance (emission of signals exceeding 10
V/m) owing to the presence of an INVERTER, or in applications where the length of the thermostat
connections exceeds 20 metres, a protection kit is available as an interface between the control box and the
burner.
FIXING TO THE BOILER
GAS SUPPLY
Quantity Description
1Flange
1Gasket
8 Screws
1 Flange gasket
Separate the combustion head from the
burner body by loosening the screws 1)
and 2) and withdrawing the group A) from
the holding bars 3).
Fix the group B) to the boiler front plate 4)
using the gasket 5) provided as acces-
sory.
23 5 4
1
AB
S7499
1- Gas pipe line 6- Minimal gas pressure switch
2- Cock valve 7- Gas shut off valve
3- Filter 8- Burner
4- Pressure stabilizer 9- Gas safety shut off valve
5- Pressure test-point 10 - Isolator joint
5
8
79
5
6
43102 1
S7500
5

5859
3
WORKING RANGE
COMBUSTION CHAMBER PRESSURE - MAXIMUM OUTPUT (in compliance with DIN 4788)
MINIMUM GAS PRESSURE - OUTPUT
Pressure: detected at the pressure test-point 7) (fig. 1) with nil mbar into the combustion chamber.
Should the combustion chamber be pressurized, the pressure necessary will be that of the
graph plus the pressurization value.
Example: to obtain 270 kW it is necessary a gas pressure of 8 mbar and the combustion head set as
indicated at page 7.
If the combustion chamber is pressurized at 2 mbar, the pressure detected at the test-point
7) is: 8 + 2 = 10 mbar.
If this value is too high, for very low gas pipework pressures, the gas gear 6) (page 7) could
be more open.
Do not decrease the pressure at the coupling under the values shown in the diagram.
Output: the maximum value is obtainable with gas Pci 8600 kcal/m3.
CORRELATION BETWEEN GAS PRESSURE AND BURNER OUTPUT
kW
kcal/h
mbar
D1788
kW
kcal/h
mbar
D1789

5859 4
BURNER ELECTRICAL WIRING
(carried out in the factory)
ATTENTION
In the case of phase-phase feed, a bridge must be fitted on the control box terminal board between terminal 6
and the earth terminal.
CCapacitor
F1 Protection against radio interference
K1 Relay
MB Burner terminal strip
MV Fan motor
PA Air pressure switch
RMG Control box
SO Ionisation probe
TA Ignition transformer
TB Burner earth
D2563

5859
5
ELECTRICAL CONNECTIONS TO THE WIRING TERMINAL BLOCK
(to be carried out by the installer)
Notice
- Leads minimal section 1 mm2.
- TheelectricwiringcarriedoutbytheinstallermustbeincompliancewiththerulesinforceintheCountry.
FIXING OF THE ELECTRICAL WIRES
All the electrical wires, which are to be connected to the
terminal block 3) (fig. 1) shall pass through the fair leads 4)
(fig. 1) as for this scheme.
1- Single phase supply : fair lead Pg 13.5
2- Adjustment thermostat : fair lead Pg 13.5
3- Safety thermostat : fair lead Pg 13.5
4- Gas train : fair lead Pg 13.5,
sheath ø 13
5 / 6 / 7 /8 - Pre-sheared holes
Further prospective signals or controls can be connected to the burner wiring terminal board by removing
the metal weldnuts from the pre-sheared holes and inserting a commun fair lead for the passage and the
clamping of the leads.
NOTES
- Do not exchange the neutral wire with the phase (avoid the plug-pin connection).
- Carry out a safe earth connection.
- Check the stop of the burner, by opening the boiler thermostat and the burner lock-out, by disconnecting
the lead from the flame probe.
WARNING
When closing the burner on its slide-bars, pull towards the outside the high voltage cable and the cable
of the flame detection probe, till to little tension.
D2658
HRemote lock-out signal
PG Minimum gas pressure switch
TB Burner earth
TL Limit control device system
TS Safety control device system
VS Gas safety shut off valve
V1 Gas shut off valve
S7505

5859 6
BURNER START-UP CYCLE
Air-purge: loosen the screw placed on the minimal gas pressure switch mounted on the gas train
AIR PRESSURE SWITCH
The air pressure switch setting shall be carried out after having
set all other adjustments of the burner and the air pressure
switch shall be at its lowest set-point.
When the burner is operating, increase the adjustment pressure
by turning - slowly - clockwise the knob till reaching the burner
lock-out.
Thereafter, turn the knob anticlockwise for 1 mbar and repeat the
burner start-up for checking the regularity: if lock-out intervenes
turn the knob anticlockwise for 0.5 mbar.
CAUTION:
do not turn the ionization probe, maintain the drawing position; should it be close to the ignition elec-
trode, damage may occur to the control box amplifier.
Screw
Plug for pressure measure
Pressure switch
S7506
1 ÷ 10
mbar
Adjustment knob
S7507
0 - 1 mm
2 - 4 mm
Probe position Ignition electrode position
S7508

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7
COMBUSTION HEAD ADJUSTMENT
Two separate adjustments have to be made: air and gas.
These adjustments can be carried out when the burner is still open, during the installation (see
page 2 - Fixing to the boiler).
Air setting
Loosen the two screws 1) and move the internal
part of the combustion head 2) so that its rear
edge 3) is coincident with the desired set-point
on the plate 4). Tighten the screws 1).
Gas setting
Loosen the screw 5), move the ring 6) so that
the pointer 7) is coincident with the desired set-
point 8). Tighten the screw 5).
Attention:
the set-point number is the same for air and gas
setting and is given by the following diagram.
Example:
the burner is installed on a boiler of 225 kW, assuming an efficiency of 90% the burner output should
be 250 kW. From the diagram it can be seen that the air and gas settings for this rating should be no. 4.
256
8
1347 S7509
kcal/h kW
Burner output
Set-point number = for air and gas
D1793

5859 8
COMBUSTION CHECKS
CO2
It is advisable to not exceed 10% of CO2(gas with calorific value of 8600 kcal/m3), in order to avoid
the risk that small changes of the adjustments due, for instance, at draught variation, may cause com-
bustion with insufficient air and consequently formation of CO.
CO
For safety reason the value of 0.1% (one thousand p.p.m.) must not be exceeded.
IONIZATION CURRENT
The minimum current necessary for the control box operation is 3 µA.
The burner normally supplies a higher current value, so that no check is needed.
However, if a measurement of the ionization current is required, it is necessary to disconnect the
probe lead and insert a d.c. microamperometer.
BURNER START-UP
If during operation the flame shuts off, lock-out occurs within 1 sec.
+-
Lead Probe
S7511
Normal Lock-out because no ignition
Thermostat
Motor
Ignition transf.
Start valve
Adjust. valve
Lock-out
2 s 40 s 10 s 2 s 40 s 3 s max.
D1798