Riello 517T80 Quick start guide

Installation, use and maintenance instructions
2915861 (4) - 07/2015
Forced draught gas burner
One stage operation
CODE MODEL TYPE
3751782 GAS 5 517T80
GB

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 5
These products are in compliance with the following Technical Standards:
EN 676
EN 12100
and according to the European Directives:
MD 2006/42/EC Machine Directive
LVD 2006/95/EC Low Voltage Directive
EMC 2004/108/EC Electromagnetic Compatibility
The quality is guaranteed by a quality and management system certified in accordance with UNI EN ISO 9001.
Legnago, 21.05.2015 Executive General Manager
RIELLO S.p.A. - Burner Department Research & Development Director RIELLO S.p.A. - Burner Department
Mr. U. Ferretti Mr. F. Comencini

5861
1
TECHNICAL DATA
BURNER DESCRIPTION
BURNER EQUIPMENT
ACCESSORY
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.
Thermal output
320 - 660 kW 275.200 - 567.600 kcal/h
Fuel
Natural gas Pci 8 - 10 kWh/m
3
= 7000 - 8600 kcal/m
3
Minimum gas pressure
For maximum output 9.8 mbar are needed measured at the coupling
with nil pressure in the combustion chamber and gas with calorific
value of 8600 kcal/m
3
Maximum gas pressure 150 mbar
Electrical supply Three phase 380 V + 10% - 10% ~ 60Hz with neutral
Motor 1.9 A / 380 V
Ignition transformer Primary: 1.8A / 220V - Secondary: 1 x 8 kV - 30 mA
Absorbed electrical power 1.1 kW
Quantity Burner accessories
1 Flange
1 Gasket
8 Screws
1 Flange gasket
1 Pipe fitting for gas train
1– Air shutter control
2– Air shutter lock-nut
3– Control box re-set button
4– Fair leads
5– Wiring terminal block
6– Re-set push-button of the
motor overload relay
7– Air pressure switch
8– Gas pressure test-point Fig. 1
8
7
5
4
3
2 1
S7513
6

5861
2
OVERALL DIMENSIONS
FIXING TO THE BOILER
GAS SUPPLY
Boiler front-plate
drilling
160
160
165 M10
D1785
Burner
410 645207
*
365
437
97
332
165
ø 155
Rp 1 1/2
S7497 S7498
* Length available with special blast tube to be separately required.
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
accessory.
2 3 5 4
1
A B
S7499
1- Gas pipe line 7- Gas shut off valve
2- Cock valve 8- Burner
3- Filter 9- Gas safety shut off valve
4- Pressure stabilizer 10 - Gas leak control device
5- Pressure test-point 11 - Isolator joint
6- Minimal gas pressure switch
5
8
7 9 5
6
4 3
10 2 1
S7514
11
5

5861
3
WORKING RANGE
COMBUSTION CHAMBER PRESSURE - MAXIMUM OUTPUT
(in compliance with DIN 4788)
MINIMUM GAS PRESSURE - OUTPUT
Pressure: detected at the pressure test-point 8) (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 550 kW it is necessary a gas pressure of 9 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
8) is: 9 + 2 = 11 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/m
3
.
CORRELATION BETWEEN GAS PRESSURE AND BURNER OUTPUT
kW
kcal/h
mbar
D1790
kW
kcal/h
mbar
D1791

5861
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.
CMV Fan motor contactor
F1 Protection against radio interference
K1 Relay
MB Burner terminal strip
MV Fan motor
PA Air pressure switch
RMG Control box
RT Overload
S Suppressor
SO Ionisation probe
TA Ignition transformer
TB Burner earth
20107483

5861
5
ELECTRICAL CONNECTIONS TO THE WIRING TERMINAL BLOCK
(to be carried out by the installer)
Notice
-Leads minimal section 1 mm
2
.
- The electric wiring carried out by the installer mustbe in compliance with the rules in force in the Country.
FIXING OF THE ELECTRICAL WIRES
All the electrical wires, which are to be connected to the
terminal block 5) (fig. 1) shall pass through the fair leads
4) (fig. 1) as for this scheme.
1- Three phase supply : fair lead Pg 21
2 - Single phase supply :fair lead Pg 13.5
3- Adjustment thermostat : fair lead Pg 13.5
4- Safety thermostat : fair lead Pg 13.5
5- Gas train : fair lead Pg 13.5,
sheath ø 13
6 / 7 / 8 /9 - 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.
HRemote lock-out signal
H 1 Remote lock-out signal of
leak
detection control device
IN Burner manual stop switch
MB Burner terminal strip
PG Min. gas pressure switch
TS Safety control device system
TL Limit control device system
VPS Leak detection control device
VR Adjustement valve
VS Gas safety valve
XP7 Plug for leak detection control
device
D2657
F Ampere T6
S mm
2
1
S7529

5861
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 7) (fig.1)
The air pressure switch setting shall be carried out after having set
all other adjustment 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 electrode,
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

5861
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 500 kW, assuming an efficiency of 90% the burner output should be
560 kW.
From the diagram it can be seen that the air and gas settings for this rating should be no. 5.
25
6
8
1 3 4 7
S7496
kcal/h kW
Burner output
Set-point number = for air and gas
D1794

5861
8
COMBUSTION CHECKS
CO
2
It is advisable to not exceed 10% of CO
2
(gas with calorific value of 8600 kcal/m
3
), in order to avoid the
risk that small changes of the adjustments due, for instance, at draught variation, may cause combus-
tion 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.
MOTOR LOCK-OUT
This is caused by the thermal protector relay, in case of overloading, or by the lacking of the phase.
To clear, pushdown the appropriate knob, after having removed the protective cover
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