Riello RS 38/M Installation, Use And Maintenance Instructions

Installation, use and maintenance instructions
GB
Forced draught gas burners
Low-High-Low or Modulating Operation
CODE
MODEL
20165993
RS 28/M
20166042
RS 38/M
20166043
RS 50/M
20154169 (2) - 11/2020
Original instructions
Contents
1
Information and general instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1
Information about the instruction manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1.1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1.2
General dangers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1.3
Other symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1.4
Delivery of the system and the instruction manual. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.2
Guarantee and responsibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.2.1
Owner’s responsibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2
Safety and prevention. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.2
Personnel training . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3
Technical description of the burner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.1
Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.2
Electrical data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.3
Burner equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.4
Burner models designation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.5
Burner dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.6
Firing rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.6.1
Procedure to refer burner operating condition at an altitude and/or at a combustion supporter air temperature
different to the standard values (328 ft above sea level, 68 °F). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.7
Minimum furnace dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.8
Burner description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.9
Electrical panel description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.10
RFGO-A13 control box. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.11
SQN70 Servomotor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.1
Notes on safety for the installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.2
Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.3
Preliminary checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.4
Boiler plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.5
Blast tube length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.6
Securing the burner to the boiler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.7
Ignition pilot adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.8
Combustion head adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.9
Gas supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.9.1
Gas train. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.9.2
Gas feeding line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.9.3
Gas pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
4.10
Electrical wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4.10.1 Notes on terminals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4.10.2 Supply cables and external connections passage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4.11
Calibration of the thermal relay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4.12
Motor connection at 208-230 or 460V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
4.13
Motor connection at 575V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
4.14
Motor rotation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.15
Burner operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
4.15.1 Burner starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
4.15.2 Steady state operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
4.15.3 Firing failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
4.15.4 Burner flame goes out during operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
5
Start-up, calibration and operation of the burner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
5.1
Notes on safety for the first start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
5.2
Adjustments before first firing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
1 GB
20154169
Contents
5.2.1
5.3
5.4
5.5
5.5.1
5.5.2
5.5.3
5.5.4
5.6
5.6.1
5.6.2
Servomotor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Burner start-up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Burner firing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Burner calibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Firing output. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Maximum output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Minimum output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Intermediate outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Final calibration of the pressure switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Air pressure switch - CO check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Low gas pressure switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
6
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
6.1
Notes on safety for the maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
6.2
Maintenance programme. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
6.2.1
Maintenance frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
6.2.2
Safety test - with gas ball valve closed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
6.2.3
Checking and cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
6.2.4
Flame presence check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
6.2.5
Safety components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
6.3
Opening the burner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
6.4
Closing the burner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
7
LED indicator and special function. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
7.1
Description of LED lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
7.2
Check mode function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
7.3
Flame control lock-out or emergency stop condition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
7.4
LED lamps: burner operating status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
8
Problems - Causes - Remedies signalled by LED indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
A
Appendix - Spare parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
B
Appendix - Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
C
Appendix - Burner start up report. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
20154169
2 GB
Information and general instructions
1
1.1
1.1.1
Information and general instructions
Information about the instruction manual
Introduction
WARNING: MOVING PARTS
The instruction manual supplied with the burner:
 is an integral and essential part of the product and must not be
separated from it; it must therefore be kept carefully for any
necessary consultation and must accompany the burner even
if it is transferred to another owner or user, or to another system. If the manual is lost or damaged, another copy must be
requested from the Technical Assistance Service of the area;
 is designed for use by qualified personnel;
 offers important indications and instructions relating to the
installation safety, start-up, use and maintenance of the
burner.
This symbol indicates that you must keep limbs
away from moving mechanical parts; danger of
crushing.
DANGER: EXPLOSION
This symbol signals places where an explosive atmosphere may be present. An explosive atmosphere is defined as a mixture - under atmospheric
conditions - of air and flammable substances in the
form of gases, vapours, mist or dust in which, after
ignition has occurred, combustion spreads to the
entire unburned mixture.
Symbols used in the manual
PERSONAL PROTECTION EQUIPMENT
In some parts of the manual you will see triangular DANGER signs.
Pay great attention to these, as they indicate a situation of potential
danger.
1.1.2
These symbols indicate the equipment that must be
worn and kept by the operator for protection against
threats against safety and/or health while at work.
General dangers
The dangers can be of 3 levels, as indicated below.
DANGER
WARNING
CAUTION
1.1.3
Maximum danger level!
This symbol indicates operations which, if not carried out correctly, cause serious injury, death or
long-term health risks.
OBLIGATION TO ASSEMBLE THE COVER AND
ALL THE SAFETY AND PROTECTION DEVICES
This symbol indicates operations which, if not carried out correctly, may cause serious injury, death
or long-term health risks.
This symbol signals the obligation to reassemble
the cover and all the safety and protection devices
of the burner after any maintenance, cleaning or
checking operations.
ENVIRONMENTAL PROTECTION
This symbol indicates operations which, if not carried out correctly, may cause damage to the machine and/or injury to people.
This symbol gives indications for the use of the machine with respect for the environment.
IMPORTANT INFORMATION
Other symbols
This symbol indicates important information that
you must bear in mind.
DANGER: LIVE COMPONENTS
DANGER
This symbol indicates operations which, if not carried out correctly, lead to electric shocks with lethal
consequences.
DANGER: FLAMMABLE MATERIAL
This symbol indicates the presence of flammable
materials.
DANGER: BURNING
This symbol indicates the risks of burns due to high
temperatures.

This symbol indicates a list.
Abbreviations used
Ch.
Fig.
Page
Sec.
Tab.
Chapter
Figure
Page
Section
Table
DANGER: CRUSHING OF LIMBS
This symbol indicates the presence of moving
parts: danger of crushing of limbs.
3 GB
20154169
Information and general instructions
1.1.4
Delivery of the system and the instruction
manual
When the system is delivered, it is important that:
 the instruction manual is delivered to the user by the system
manufacturer, with the recommendation to keep it in the room
where the heat generator is to be installed.
 The instruction manual shows:
– the serial number of the burner;
 The system supplier must carefully inform the user about:
– the use of the system;
– any further tests that may be required before activating the
system;
– maintenance, and the need to have the system checked at
least once a year by a representative of the manufacturer or
another specialised technician.
To ensure a periodic check, the manufacturer recommends
the drawing up of a Maintenance Contract.
.........................................................................................
– the address and telephone number of the nearest Assistance Centre
...........................................................................................
...........................................................................................
.....................................................................................
1.2
Guarantee and responsibility
The manufacturer guarantees its new products from the installation date, in accordance with the regulations in force and/or the
sales contract. At the moment of the first start-up, check that the
burner is integral and complete.
WARNING
Failure to observe the information given in this manual, operating negligence, incorrect installation and
the carrying out of non authorised modifications will
result in the annulment by the manufacturer of the
guarantee that it supplies with the burner.
In particular, the rights to the guarantee and the responsibility
will no longer be valid, in the event of damage to things or injury
to people, if such damage/injury was due to any of the following
causes:
 incorrect installation, start-up, use and maintenance of the
burner;
 improper, incorrect or unreasonable use of the burner;
 intervention of unqualified personnel;
 carrying out of non authorised modifications on the equipment;
 use of the burner with safety devices that are faulty, incorrectly
applied and/or not working;
 installation of untested supplementary components on the
burner;
 powering of the burner with unsuitable fuels;
 faults in the fuel power supply system;
 use of the burner even following an error and/or an irregularity;
 repairs and/or overhauls incorrectly carried out;
 modification of the combustion chamber with inserts that prevent the regular development of the flame, as structurally
established;
 insufficient and inappropriate surveillance and care of those
burner components most subject to wear and tear;
 use of non-original components, including spare parts, kits,
accessories and optionals;
 force majeure.
the manufacturer furthermore declines any and every responsibility for the failure to observe the contents of this
manual.
20154169
4 GB
1.2.1
Owner’s responsibility
Please pay attention to the Safety Warnings contained within this
instruction manual. Keep this manual for your records and provide
it to your qualified service agency for use in professionally setting
up and maintaining your burner.
Your burner will provide years of efficient operation if it is professionally installed and maintained by a qualified service technician.
If at any time the burner does not appear to be operating properly,
immediately contact your qualified service agency for consultation.
We recommend annual inspection/service of your gas heating system by a qualified service agency.
Failure to follow these instructions, misuse, or incorrect adjustment
of the burner could lead to equipment malfunction and result in asphyxiation, explosion or fire.
WARNING
If you smell gas:
 Do not touch any electrical items.
 Open all windows.
 Close all gas supply valves.
 Contact your local gas authority immediately.
•
Do not store flammable or hazardous materials
in the vicinity of fuel burning appliances.
•
Improper installation, adjustment, alteration,
service or maintenance can cause property
damage, personal injury or death.
•
Refer to this manual for instructional or additional information.
•
Consult a certified installer, service representative or the gas supplier for further assistance.
•
Burner shall be installed in accordance with
manufacturers requirements as outlined in this
manual, local codes and authorities having jurisdiction.
Safety and prevention
2
2.1
Safety and prevention
Introduction
The burners have been designed and built in compliance with current regulations and directives, applying the known technical rules
of safety and envisaging all the potential danger situations.
It is necessary, however, to bear in mind that the imprudent and
clumsy use of the equipment may lead to situations of death risk for
the user or third parties, as well as the damaging of the burner or
other items. Inattention, thoughtlessness and excessive confidence often cause accidents; the same applies to tiredness and
sleepiness.
It is a good idea to remember the following:
 The burner must only be used as expressly described. Any
other use should be considered improper and therefore dangerous.
the type and pressure of the fuel, the voltage and frequency of the
electrical power supply, the minimum and maximum deliveries for
which the burner has been regulated, the pressurisation of the
combustion chamber, the dimensions of the combustion chamber
and the room temperature must all be within the values indicated in
the instruction manual.
 Modification of the burner to alter its performance and destinations is not allowed.
 The burner must be used in exemplary technical safety conditions. Any disturbances that could compromise safety must be
quickly eliminated.
 Opening or tampering with the burner components is not
allowed, apart from the parts requiring maintenance.
 Only those parts envisaged by the manufacturer can be
replaced.
In particular:
it can be applied to boilers operating with water, steam, diathermic
oil, and to other uses expressly foreseen by the manufacturer;
WARNING
2.2
The manufacturer guarantees safety and proper
functioning only if all burner components are intact
and positioned correctly.
Personnel training
The user is the person, body or company that has acquired the machine and intends to use it for the specific purpose. He is responsible for the machine and for the training of the people working
around it.
The user:
 undertakes to entrust the machine exclusively to suitably
trained and qualified personnel;
 undertakes to inform his personnel in a suitable way about the
application and observance of the safety instructions. With
that aim, he undertakes to ensure that everyone knows the
use and safety instructions for his own duties;
 personnel must observe all the danger and caution indications
shown on the machine.
 Personnel must not carry out, on their own initiative, operations or interventions that are not within their province.
 Personnel must inform their superiors of every problem or
dangerous situation that may arise.
 The assembly of parts of other makes, or any modifications,
can alter the characteristics of the machine and hence compromise operating safety. The manufacturer therefore declines
any and every responsibility for any damage that may be
caused by the use of non-original parts.
5 GB
In addition:
 must take all the measures necessary to prevent unauthorised people gaining access to the
machine;
 the user must inform the manufacturer if faults
or malfunctioning of the accident prevention
systems are noticed, along with any presumed
danger situation;
 personnel must always use the personal protective equipment envisaged by legislation and
follow the indications given in this manual.
20154169
Technical description of the burner
3
3.1
Technical description of the burner
Technical data
Model
Output (1)
High
Low
RS 28/M
RS 38/M
RS 50/M
RS 50/M
kW
617 - 1232
181 - 361
880 - 1665
258 - 488
1099 - 2201
322 - 645
1099 - 2201
322 - 645
MBtu/hr
kW
198
58
266
78
321
94
321
94
MBtu/hr
Fuel
Natural or propane gas
- Max delivery
SCFH
1232
1665
2201
2201
- Pressure at maximum delivery (2)
natural gas
“ WC
2.95
2.6
2.83
2.83
Operation
Low - high-low or modulating
FS2 - Continuous operation - only using the flame detection electrode (ionisation)
These burners are suitable also for the intermittent operation (FS1) only using the UV
flame sensor kit
Standard application
Ambient temperature
Boilers: water, steam, thermal oil
°F
32 - 104 (0 - 40 °C)
Combustion air temperature
°F max
140 (60 °C)
Noise levels (3)
dBA
68
70
72
72
Weight (complete with packaging)
lbs
84
88
91
93
Tab. A
(1) Reference conditions: Ambient temperature 68 °F (20°C) - Barometric pressure 394” WC - Altitude 329 ft a.s.l.
(2) Pressure at test point 8)(Fig. 4, page 10), with zero pressure in the combustion chamber, with open gas ring 2) at maximum burner output
(3) Sound pressure measured in manufacturer’s combustion laboratory, with burner operating on test boiler and at maximum rated output.
3.2
Electrical data
Model
RS 28/M
RS 38/M
RS 38/M
RS 50/M
RS 50/M
Main power supply (+/-10%)
V/Ph/Hz
120/1/60
208-230/460/575/3/60
120-230/1/60
Fan motor
rpm
W - HP
V
A
3400
370 - 0.5
120
5.2
3400/3450
550 - 0.75
208-230/460/575
3.2 - 1.8 - 1.3
3450
550 - 0.75
120 - 230
9.8 - 4.9
µF
50
Motor capacitor
Ignition transformer
V1 - V2
I1 - I2
Electrical power consumption
W max
20
120 V - 1 x 7 kV
1.6 A - 23 mA
1345
Electrical protection
1720
1870
NEMA 1
Tab. B
3.3
Burner equipment
The burner is supplied complete with:
Gas train flange . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . No. 1
Flange gasket. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . No. 1
Flange fixing screws. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . No. 4
Screws (3/8 W x 1”) to secure the burner flange
to the boiler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . No. 4
Burner head gasket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . No. 1
Instruction manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . No. 1
20154169
6 GB
Technical description of the burner
3.4
Burner models designation
Model
RS 28/M TC FS1
RS 38/M TC FS1
RS 38/M TC FS1
RS 38/M TC FS1
RS 50/M TC FS1
RS 50/M TC FS1
RS 50/M TC FS1
RIELLO code
20154108
20154129
20154134
20154131
20154141
20154137
20154146
RBNA code
20165993
20166042
==
==
==
==
20166043
Voltage
120/1/60
120/1/60
==
==
==
==
120/1/60
Flame safeguard
Burner mounted
Burner mounted
Burner mounted
Tab. C
3.5
Burner dimensions
The dimensions of the burner are shown in Fig. 1.
Bear in mind that if you need to examine the combustion head, the
burner must be pulled backward on the slide bars and turned upward.
The dimensions of the open burner are indicated by position H.
D
A1
A
M
F
L
B
E
G
I
C
D7639
H
Fig. 1
A
A1
B
C
D (1)
RS 28/M
RS 38/M
RS 50/M three-phase
RS 50/M single-phase
18 23/32 ”
18 23/32 ”
18 23/32 ”
-
21 3/16 ”
18 21/32 ”
18 21/32 ”
18 21/32 ”
18 21/32 ”
22 13/16 ”
22 13/16 ”
22 13/16 ”
22 13/16 ”
8 1/2 ” - 13 13/16 ”
8 1/2 ” - 13 13/16 ”
8 1/2 ” - 13 13/16 ”
8 1/2 ” - 13 13/16 ”
inch
RS 28/M
RS 38/M
RS 50/M three-phase
RS 50/M single-phase
E
5 1/2 ”
5 1/2 ”
5 31/32 ”
5 31/32 ”
inch
F
13 27/32 ”
13 27/32 ”
13 27/32 ”
13 27/32 ”
G
6 7/16 ”
6 7/16 ”
6 7/16 ”
6 7/16 ”
H
31 7/8 ”
31 7/8 ”
31 7/8 ”
31 7/8 ”
I
4 1/4 ”
4 1/4 ”
4 1/4 ”
4 1/4 ”
L
6 5/8 ”
6 5/8 ”
6 5/8 ”
6 5/8 ”
M
11/2 ”
11/2 ”
11/2 ”
11/2 ”
Tab. D
(1) Blast tube: short-long (obtainable with kit)
7 GB
20154169
Technical description of the burner
3.6
Firing rate
RS 28/M = 198 MBtu/hr 58 kW
RS 38/M = 266 MBtu/hr 78 kW
RS 50/M = 321 MBtu/hr 94 kW
NOTE:
The FIRING RATE areas given in figure (A) have been reduced
by 10% with respect to the maximum range that can be
reached. See “Procedure to refer burner operating condition
at an altitude and/or at a combustion supporter air temperature different to the standard values (328 ft above sea level, 68
°F).” on page 9 for operation at different ambient temperatures
and/or altitudes.
Combustion chamber pressure
“WC
WARNING
The firing rate was obtained considering a room
temperature of 68 °F and an atmospheric pressure
of 394 “WC (approx. 0 ft above sea level), with the
combustion head adjusted.
D2259
Combustion chamber pressure
“WC
The minimum output must not be lower than the minimum limit of
the diagrams.
Combustion chamber pressure
“WC
The maximum output is chosen within area of the Fig. 2.
Fig. 2
20154169
8 GB
Technical description of the burner
3.6.1
Procedure to refer burner operating condition at an altitude and/or at a combustion supporter air
temperature different to the standard values (328 ft above sea level, 68 °F).
AIR TEMPERATURE
Altitude
Altitude bar. press. bar. press.
0
5
10
15
20
25
30
40
°C
ft a.s.l.
m a.s.l.
"w.c.
mbar
32
41
50
59
68
77
0
0
399
1013.00
1.087
1.068
1.049
1.031
1.013
0.996
86
104
°F
0.980
0.948
328
100
394
1000.00
1.073
1.054
1,035
1,017
1.000
0.983
0.967
0.936
1.000
305
385
977.40
1.049
1.030
1.012
0.994
0.977
0.961
0.945
0.915
2.000
610
371
942.80
1.012
0.994
0.976
0.959
0.943
0.927
0.912
0.883
3.000
915
358
908.20
0.975
0.957
0.940
0.924
0.908
0.893
0.878
0.850
4.000
1.220
345
875.80
0.940
0.923
0.907
0,891
0,876
0.861
0.847
0.820
5.000
1.525
332
843.50
0.905
0.889
0,873
0.858
0.844
0.829
0.816
0.790
6.000
1.830
320
811.85
0.871
0.856
0.841
0.826
0,812
0.798
0.785
0.760
7.000
2.135
307
779.80
0.837
0.822
0.807
0.793
0.780
0.767
0.754
0.730
8.000
2.440
294
747.80
0.803
0.788
0.774
0.761
0.748
0.735
0.723
0.700
Tab. E
F - correction factor of discharge head and delivery in relation to temperature and altitude.
Example
Reference conditions:
– Air temperature 68 °F (20 °C)
– Barometric pressure 394 ''w.c. (1000 mbar)
– Altitude 328 ft a.s.l. (100 m a.s.l.)
Using the Tab. E, for an altitude of 3,000 ft and an air temperature
of 68 °F, an F factor value is obtained equal to 0.908;
if the capacity at the boiler furnace is Qfoc = 4,500 Mbtu/h, the correct output will be equal to:
Qburner = Qfoc / F = 4,500 / 0.908 = 4,956 Mbtu/h
3.7
Minimum furnace dimensions
The firing rates were obtained in special test boilers.
Fig. 3 indicates the diameter and length of the test combustion
chamber.
Example
Output 1388 Mbtu/hr - diameter 20 inch - length 4.9 ft.
Length of combustion
chamber - ft
D2918
Fig. 3
9 GB
20154169
Technical description of the burner
3.8
Burner description
11
20183685
14 15 16
17
20183686
13
12
24
19
1
18
6
2
7
20
3
4
8
23
22
9
5
10
20183588
21
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
Combustion head
Ignition electrode
Screw for combustion head adjustment
Sleeve
Low air pressure switch
(differential operating type)
Flame sensor probe (flame rod)
Air pressure test point
Gas pressure test point and head fixing screw
Screws securing fan to sleeve
Slide bars for opening the burner and inspecting the combustion head
Servomotor controlling the gas butterfly valve and air damper
(by means of a variable profile cam mechanism).
When the burner is not operating the air damper is fully closed
in order to reduce heat loss.
Plate with four hole knock-outs for electrical cable routing
Air inlet to fan
Gas input connection
Gas butterfly valve
Boiler mounting flange
Flame stability disk
Flame inspection window
Ignition pilot
Flame safeguard
Plug-socket on flame rod probe cable
Air damper
Protection (for RS 50/M single-phase burner)
Fan motor
20154169
Fig. 4
Two types of burner failure may occur:
•
FLAME SAFEGUARD LOCK-OUT: if the flame relay
20)(Fig. 4) push-button lights up, it indicates that the burner is
in lock-out. To reset, press the push-button.
•
MOTOR TRIP (RS 38 - 50 three-phase): release by pressing
the push-button on thermal overload).
10 GB
Technical description of the burner
3.9
Electrical panel description
3
2
1
6
5
4
7
8
1
2
3
4
5
6
7
8
9
20183684
9
Fig. 5
Switch for:
automatic-manual-OFF operation
Button for: increase - decrease output
Motor contactor
Thermal relay with reset button
Bracket for the application of RWF kit
Control box base
Ignition transformer
Relay
Terminal board for electrical connection
3 poles plug and socket
11 GB
20154169
Technical description of the burner
3.10 RFGO-A13 control box
Warnings
S9739
To avoid accidents, material or environmental damage, observe the following instructions!
WARNING
The control box is a safety device! Avoid opening or
modifying it, or forcing its operation. Riello S.p.A.
cannot assume any responsibility for damage resulting from unauthorised interventions!
 All interventions (assembly and installation operations, assistance, etc.) must be carried out by qualified personnel.
 Before modifying the wiring in the control box connection area,
fully disconnect the system from the power supply (omnipolar
separation). Check the system is not powered and cannot be
accidentally reconnected. Failure to do this will lead to the risk
of electrocution.
 Protection against electrocution from the control box and all
connected electric components is obtained with the correct
assembly.
 Before any intervention (assembly and installation operations,
assistance, etc.), ensure the wiring is in order and that the
parameters are correctly set, then make the safety checks.
 Falls and collisions can negatively affect the safety functions.
In this case, the control box must not be operated, even if it
displays no evident damage.
Fig. 6
Technical data
For the safety and reliability of the control box, comply with the
following instructions:
– avoid conditions that can favour the development of condensate and humidity. Otherwise, before switching on again, make
sure that the entire control box is perfectly dry!
– Static charges must be avoided since they can damage the
control box’s electronic components when touched.
Mains voltage
110 Vac +20 % / +15 %
Mains frequency
50 / 60 Hz
Primary fuse (external)
max. 10 A
Weight
approx. 2.5 lbs.
Power absorption
approx. AC 7 VA
Protection level
IP40
Safety class
II
Environmental conditions:
Operation
Mechanical conditions
Temperature range
Humidity
DIN EN 60721-3-3
Class 3M3
Class 3K3
-104 to 140°F
< 90 % r.h. (without condensing)
Tab. F
Mechanical structure
The control box is made of plastic to resist knocks, heat and flame
propagation.
20154169
12 GB
Technical description of the burner
3.11 SQN70 Servomotor
Important notes
To avoid accidents, material or environmental
damage, observe the following instructions!
WARNING
Avoid opening,
servomotor.
modifying
or
forcing
the
 All interventions (assembly and installation operations,
assistance, etc.) must be carried out by qualified personnel.
 Falls and collisions can negatively affect the safety functions.
In this case, the servomotor must not be operated, even if it
displays no evident damage.
 Fully disconnect the burner from the mains when working near
terminals and servomotor connections.
 Condensation and exposure to water are not allowed.
 For safety reasons, the servomotor must be checked after
long periods of non-use.
S9795
Fig. 7
Technical data
NOTE:
Do not allow condensation, ice formation or water inlet!
•
Mains voltage
115V - 15%+10%
Mains frequency
50 / 60 Hz +/- 6%
Power absorption
6 VA
Motor
Synchronous
Drive angle
Varying between 0° and 90°
NEMA rating
NEMA1, 2, 5 and 12 for indoor use
Rotation direction
Anticlockwise
Rated torque (max.)
22 lb-in
Holding torque
11.5 lb-in
Operation time
25 s. at 90° at 60 Hz
Weight
1 lb
Environmental conditions:
Temperature range
-5°F... to 140°F
Tab. G
13 GB
20154169
Installation
4
4.1
Installation
Notes on safety for the installation
After carefully cleaning all around the area where the burner will be
installed, and arranging the correct lighting of the environment, proceed with the installation operations.
DANGER
4.2
All the installation, maintenance and disassembly
operations must be carried out with the electricity
supply disconnected.
WARNING
Handling
The packaging of the burner includes a wooden platform, so it is
possible to move the burner (still packaged) with a transpallet truck
or fork lift truck.
WARNING
The handling operations for the burner can be highly dangerous if not carried out with the greatest attention: keep any unauthorised people at a
distance; check the integrity and suitableness of the
available means of handling.
Check also that the area in which you are working
is empty and that there is an adequate escape area
(i.e. a free, safe area to which you can quickly move
if the burner should fall).
During the handling, keep the load at not more than
20-25 cm from the ground.
4.3
The installation of the burner must be carried out by
qualified personnel, as indicated in this manual and
in compliance with the standards and regulations of
the laws in force.
Preliminary checks
Checking the consignment
CAUTION
After removing all the packaging, check the integrity
of the contents. In the event of doubt, do not use the
burner; contact the supplier.
The packaging elements (wooden cage or cardboard box, nails, clips, plastic bags, etc.) must not
be abandoned as they are potential sources of danger and pollution; they should be collected and disposed of in the appropriate places.
The output of the burner must be within the boiler’s firing rate.
WARNING
WARNING
20154169
A burner label that has been tampered with, removed or is missing, along with anything else that
prevents the definite identification of the burner
makes any installation or maintenance work difficult.
14 GB
After positioning the burner near the installation
point, correctly dispose of all residual packaging,
separating the various types of material.
CAUTION
Before proceeding with the installation operations,
carefully clean all around the area where the burner
will be installed.
Installation
4.4
Boiler plate
 Drill the combustion chamber mounting plate as shown in
Fig. 8. The position of the threaded holes can be marked
using the burner head gasket supplied with the burner.
inch
A
B
C
RS 28/M
6 9/32“
8 13/16“
3/8 W
RS 38/M
6 9/32“
8 13/16“
3/8 W
RS 50/M
6 9/32“
8 13/16“
3/8 W
Tab. H
4.5
D455
Fig. 8
Blast tube length
The length of the blast tube must be selected according to the indications provided by the manufacturer of the boiler, and it must be
greater than the thickness of the boiler door complete with its insulation.
The range of lengths available, L (inch), is as follows:
Tab. I
For boilers with front flue passes 13)(Fig. 9) or flame inversion
chambers, protective insulation 11) must be inserted between the
boiler refractory 12) and the blast tube 10).
Blast tube
RS 28/M
RS 38/M
RS 50/M
This protective insulation must not compromise the extraction of
the blast tube.
Short
8 1/2”
8 1/2”
8 1/2”
For boilers having a water-cooled front the insulation 11)-12) is not
required unless it is required by the boiler manufacturer.
13 13/16”
13 13/16”
13 13/16”
Long (with kit)
4.6
Securing the burner to the boiler
Prepare a suitable lifting system.
D2260
The manufacturer declines any and every responsibility for any possible lifting movements,
different from those indicated in this manual.
Before securing the burner to the boiler, check through the blast
tube opening to make sure that the flame sensor probe is correctly
set in position, as shown in Fig. 11.
Now detach the combustion head from the burner, (Fig. 9):
– remove screw 14) and withdraw the cover 15).
– Disengage the swivel coupling 4) from the graduated sector 5).
– Remove the screws 2) from the slide bars 3)
– Remove screw 1) and pull the burner back on slide bars 3) by
about 4”. Disconnect the wires from the probe and the electrode and then pull the burner completely off the slide bars, after removing the split pin from the slide bar 3).
Fig. 9
Secure the flange 9)(Fig. 9) to the boiler plate, inserting the head
gasket 6)(Fig. 9). Use the 4 screws, also supplied with the unit, after first protecting the thread with an anti-seize product.
The seal between burner and boiler must be airtight.
If you noticed any irregularities in the positions of the probe or ignition electrode during the check mentioned above, remove
screw 1)(Fig. 10), extract the internal part 2)(Fig. 10) of the head
and set up the two components correctly.
The seal between burner and boiler must be airtight.
WARNING
15 GB
D2292
Fig. 10
20154169
Installation
4.7
Ignition pilot adjustment
Place the pilot and electrode as shown in Fig. 11.
Ignition pilot
The pilot works correctly at pressures ranging from 5 - 12” WC.
Probe
IMPORTANT
To set pilot without main burner operation, use the function “Check
mode” of the control box (see page 32).
Measures must be respected.
WARNING
Electrode
D2261
Fig. 11
4.8
Combustion head adjustment
Installation operations are now at the stage where the blast tube
and sleeve are secured to the boiler as shown in Fig. 12, page 17.
There are two possible cases:
The MIN burner output is not in the values of Tab. J.
In diagram (Fig. 13, page 17), depending on the MAX output, find
the notch to use for adjusting the air and the gas, and then proceed
as follows:
Air adjustment
Turn screw 4)(Fig. 12, page 17 - A) until the notch identified is
aligned with the front surface 5)(Fig. 12, page 17 - A) of the flange.
Gas adjustment
Loosen screw 1)(Fig. 12, page 17 - B) and turn ring 2) until the
notch identified is aligned with index 3).
Tighten the screw 1) fully down.
Example:
the burner RS 38/M varies its output between: MIN = 378.7 and
MAX = 1288 MBtu/hr.
The MIN output of 378.7 MBtu/hr is not found in the values of
tTab. J and therefore diagram (Fig. 13, page 17) is valid, from
which it results that for a MAX output of 1288 MBtu/hr the gas and
air adjustments are done on notch 3, as in Fig. 12, page 17 - A and
Fig. 12, page 17 - B.
In this case the pressure load loss of the combustion head is given
by column 1 on page 19.
NOTE:
Diagram (Fig. 13, page 17) shows the ideal settings for the ring
2)(Fig. 12, page 17 - B). If the gas supply pressure is too low to
reach the max output operation pressure indicated on
page 19, and if the ring 2)(Fig. 12, page 17 - B) is not fully open,
it can be opened wider by 1 or 2 notches. Continuing with the
previous example, page 19. indicates that for burner RS 38/M
with output of 1288 MBtu/hr a pressure of approximately 1.81”
WC is necessary at test point 6)(Fig. 12, page 17 - A). If this
pressure cannot be reached, open the ring 2)(Fig. 12, page 17
- B) to notch 4 or 5.
Make sure that the combustion characteristics are
satisfactory and free of pulsations.
WARNING
The MIN burner output is found in the values of Tab. J,
page 17.
20154169
16 GB
Installation
Air adjustment
Notches (Air = Gas)
The same as the previous case: diagram in Fig. 13.
D2262
Gas adjustment
The gas ring 2)(Fig. 12 - B) is always adjusted to position 0, irrespective of the MAX burner.
In this case the pressure load loss of the combustion heads is given
by column 1 page 19.
Once you have finished setting up the head, refit the burner
4)(Fig. 14) to the slide bars 3) at approximately 4” from the sleeve
5) - burner positioned as shown in Fig. 10, page 15 - insert the
flame rod cable and the ignition electrode cable and then slide the
burner up to the sleeve so that it is positioned as shown in Fig. 14.
Burner output
Fig. 13
Refit screws 2) on slide bars 3).
Secure the burner to the sleeve by tightening screw 1) and then refit the split pin into one of two slide bars 3).
D2263
Reconnect the swivel connector 8) to the graduated sector 7).
Connect gas train and pilot train as shown in Fig. 15, page 18.
WARNING
When fitting the burner on the two slide bars, it is
advisable to gently draw out the high tension cable
and flame rod cable until they are slightly stretched.
A
B
Fig. 14
Modulation minimum output: when the MIN output is within the
value range given Tab. J, the gas ring 2)(Fig. 12 - B) is adjusted to
zero.
D23015
Model
MBtu/hr
RS 28/M
198 - 280
RS 38/M
266 - 375
RS 50/M
321 - 488
Tab. J
Fig. 12
17 GB
20154169
Installation
4.9
Gas supply
4.9.1
Gas train
4.9.2
Gas feeding line
Explosion danger due to fuel leaks in the presence
of a flammable source.
Check that there are no gas leaks.
Precautions: avoid knocking, attrition, sparks and
heat.
Make sure the fuel interception tap is closed before
performing any operation on the burner.
Pay attention when handling the train: danger of
crushing of limbs.
Make sure that the gas train is properly installed by
checking for any fuel leaks.
The operator must use the required equipment during installation.
WARNING
The fuel supply line must be installed by qualified
personnel, in compliance with current standards
and laws.
It must be type-approved according to required standards and is
supplied separately from the burner.
GAS PILOT LINE
The gas train is type-approved according to standard UL 795 and
is supplied separately from the burner.
 The main gas train must be connected to the burner head
1)(Fig. 17), using flange 2), gasket 3) and bolts 4) supplied
with the burner.
 The gas train can enter the burner from the right or left side,
depending on which is the most convenient, see Fig. 17.
 Safety shut-off valves 5)-6) must be as close as possible to
the burner to ensure gas reaches the combustion head within
the safety time range.
 The pilot gas train must be connected to the gas connection
5)(Fig. 17) and can enter the burner from the right or left side.
See the accompanying instructions for the adjustment of the gas train.
WARNING
D2294
MAIN GAS LINE
Fig. 16
Key (Fig. 16)
1 Gas input pipe
2 Manual valve
3 Pressure regulator
4 Low gas pressure switch
5 1st safety shut off valve
6 2nd safety shut off valve
7 Standard issue burner with flange gasket
8 Gas adjustment butterfly valve
9 Burner
D2293
Fig. 15
20154169
18 GB
Installation
4.9.3
Gas pressure
Natural Gas
The is used to calculate manifold pressure taking into account
combustion chamber pressure.
(GCV)
•
A = Gas ring 2)(Fig. 12, page 17 - B) adjusted as indicated in
diagram (Fig. 13).
•
B = Gas ring 1)(Fig. 12, page 17 - B) set to zero.
624
699
795
891
986
1078
1174
1232
870
979
1099
1211
1327
1440
1552
1665
1090
1249
1402
1552
1706
1856
2006
2197
WARNING
The heat output and gas pressure data in the
head refer to operation with gas butterfly valve
fully open (90°).
RS 38/M
RS 50/M
Example - RS 28/M:
• Maximum output operation
• Natural gas
• Gas ring 2)(Fig. 12, page 17 - B) adjusted as indicated in diagram (Fig. 13, page 17).
• Gas pressure at test point 1)(Fig. 17) = 2.36” WC
• Pressure in combustion chamber
= 0.79” WC
2.36 - 0.79 = 1.57” WC
An output of 795 MBtu/hr shown in - RS 28/M corresponds to
1.57” WC pressure, column 1.
This value serves as a rough guide, the exact flow rate must be
measured at the gas meter.
RS 28/M
Column 1
Gas manifold pressure measured at test point 1)(Fig. 17), with:
• Combustion chamber at 0” WC
Calculate the approximate output of the burner thus:
– subtract the combustion chamber pressure from the gas pressure measured at test point 1)(Fig. 17).
– Find the nearest pressure value to your result in column 1 of
the table for the burner in question.
– Read off the corresponding output on the left.
Δp
Mbtu/hr
Combustion head
("WC)
A
0.98
1.22
1.57
1.85
2.17
2.48
2.76
2.95
1.02
1.22
1.46
1.69
1.89
2.72
2.36
2.6
0.87
1.14
1.42
1.69
1.97
2.2
2.48
2.83
B
0.98
1.30
1.69
2.05
2.28
2.68
3.07
3.58
1.02
1.38
1.77
2.28
2.72
3.11
3.54
4.21
0.87
1.30
1.61
2.01
2.36
2.76
3.15
3.78
Tab. K
D2786
Fig. 17
19 GB
20154169
Installation
4.10 Electrical wiring
Notes on safety for the electrical wiring
DANGER
 The electrical wiring must be carried out with the electrical supply disconnected.
 Electrical wiring must be made in accordance with the regulations currently in force in the country of destination and
by qualified personnel. Refer to the wiring diagrams.
 The manufacturer declines all responsibility for modifications or connections different from those shown in the wiring
diagrams.
 Check that the electrical supply of the burner corresponds to that shown on the identification label and in this manual.
 Burners have been type-approved for continuous operation (FS2). Burner FS1 operation has also been approved
only with the use of the UV flame sensor kit.
 The RFGO safety device features two built-in flame amplifiers which allow using it for applications with UV sensor
only, FR sensor only or with both sensors (UV+FR). The FR amplifier circuit is subject to constant auto-control, which
allows to use it for applications requiring a burner operating cycle longer than 24 hours. When it is used as a UV
control, the system is considered as non-permanent, requiring one burner recycle every 24 hours.
Normally, burner stopping is guaranteed by the boiler's thermostat/pressure switch.
If this is not the case, you must apply a time switch to L-N in series, to stop the burner at least once every 24 hours.
Refer to the wiring diagrams.
 The electrical safety of the device is obtained only when it is correctly connected to an efficient earthing system,
made according to current standards. It is necessary to check this fundamental safety requirement. In the event of
doubt, have the electrical system checked by qualified personnel. Do not use the gas tubes as an earthing system for
electrical devices.
 The electrical system must be suitable for the maximum input power of the device, as indicated on the label and in the
manual, checking in particular that the section of the cables is suitable for the input power of the device.
 For the main power supply of the device from the electricity mains:
- do not use adapters, multiple sockets or extensions;
- use an omnipolar switch, in compliance with the current safety standards.
 Do not touch the device with wet or damp body parts and/or in bare feet.
 Do not pull the electric cables.
Before carrying out any maintenance, cleaning or checking operations:
Disconnect the electrical supply from the burner by
means of the main system switch.
DANGER
4.10.1 Notes on terminals
On the electrical panel there terminals with a “spring” system. The
opening of these terminals must be made via a suitable tool, using
a flat-blade screwdriver of the correct size.
The clamp uses a pressurised opening system.
Clamp opening
 insert the correct screwdriver into the opening, pushing down
until the hole for the cable is completely open.
 Insert the previously stripped cable and remove the screwdriver. Make sure the cable is securely fastened Fig. 18.
Turn off the fuel interception tap.
DANGER
Avoid condensate, ice and water leaks from forming.
DANGER
If the cover is still present, remove it and proceed with the electrical
wiring.
By way of example we indicate the following mode (according to
UL795):
20114253
20154169
20 GB
Fig. 18
Installation
4.10.2 Supply cables and external connections
passage
All the cables to be connected to the burner are fed through the
holes of the right and left plates after unscrewing the screws 8) and
opening the pre-trimmed hole (Fig. 19). The use of the cable grommets can take various forms. By way of example we indicate the
following mode (according to UL795):
1 three phase power supply with 3/8 inch cable grommet
2 Available: single phase power supply and other devices
3 Available: consents/safety, minimum gas pressure switch, gas
valves, pilot valves and other devices
The control panel is in compliance with UL508A.
WARNING
All holes have a 3/8 inch dimension.
8
8
3
2
1
3
2
1
8
20183587
8
Fig. 19
After carrying out maintenance, cleaning or checking operations, reassemble the hood and all the
safety and protection devices of the burner.
4.11
Calibration of the thermal relay
The thermal relay (Fig. 20) serves to avoid damage to the motor
due to an excessive absorption increase or if a phase is missing.
D8685
For calibration 2), refer to the table indicated in the electrical layout
(electrical wiring in charge of the installer).
To reset, in case of an intervention of the thermal relay, press button “RESET” 1).
The button “STOP” 3) opens the NC contact (95-96) and stops the
motor.
TO
IP
/TR
ST
TE
Insert a screwdriver in the window “TEST/TRIP” 4) and move it in
the arrow direction (to the right) to carry out the thermal relay test.
N
MA
AU
P
O
ST
ET C
ES
N
R
3
95
96
NO
97
The automatic reset can be dangerous.
WARNING
This operation is not foreseen in the burner operation.
21 GB
98
4
2
1
Fig. 20
20154169
Installation
4.12 Motor connection at 208-230 or 460V
WARNING:
the motors, manufactured for 208-230/460 IE3 NEMA Premium Efficiency voltage, have the same connection than IE2/Epact motors,
but different connection than IE1 motors no more star/delta but star/double star.
Please, pay attention to the indications in case of modification of voltage, maintenance, or substitution.
IE1
IE2/Epact - IE3 NEMA Premium Efficiency
S8380
S8379
D3686
~~~
460V
U2
V2
W2
U2
V2
W2
U3
V3
W3
U3
V3
W3
U1
V1
W1
U1
V1
W1
~
~
~
~
~
~~~
208-230V
~
460V
208-230V
Fig. 21
4.13 Motor connection at 575V
WARNING:
the motors, manufactured for 575V IE3 NEMA Premium Efficiency voltage, have the same control box base of the IE1 and IE2/Epact
motors.
Please pay attention to the indications in case of maintenance or substitution.
S8382
~~~
575V
20154169
22 GB
Fig. 22
Installation
4.14
Motor rotation
As soon as the burner starts up, go in front of the cooling fan of the
fan motor and check it is rotating anticlockwise (Fig. 23).
If this is not the case:
 set the burner switch to “0” (OFF) and wait for the control box
to carry out the switch-off phase.
Disconnect the electrical supply from the burner
by means of the main system switch.
DANGER
 Invert the phases on the three-phase motor power supply.
20184112
23 GB
Fig. 23
20154169
Installation
4.15 Burner operation
4.15.1 Burner starting
FULL MODULATION
•
Operating closes.
Fan motor starts.
•
Servomotor starts:
90° rotation to right, until contact is made on red cam.
The air damper is positioned to MAX. output.
•
Pre-purge stage with air delivery at MAX. output.
•
After pre-purge stage, servomotor rotates to left up to the angle
set on blue cam for MIN. output.
•
The air damper and the gas butterfly are positioned to MIN. output.
•
Ignition electrode strikes a spark.
•
Pilot valve opens. The pilot flame is ignited.
•
After about 12s the main flame ignites and starting cycle ends.
20159662
4.15.2 Steady state operation
Burner without modulating control RWF
Fig. 24
At the end of the starting cycle, the servomotor control then passes
to the load control for boiler pressure or temperature.
LOW - HIGH
(The flame safeguard continues, however, to check that the flame
is present and that the air pressure switch is in the correct position.)
•
If the temperature or pressure is low, the burner progressively
increases its output to the MAX. value.
•
If the temperature or pressure is high, the burner progressively
decreases its output to the MIN. value. And so on.
•
The burner locks out when demand for heat is less than the
heat supplied by the burner at min. output. Load control opens.
The servomotor returns to the 0° angle limited by contact with
orange cam. The air damper closes completely to reduce thermal dispersion to a minimum.
20159663
Every time output is changed, the servomotor automatically modifies gas delivery (gas butterfly valve) and air delivery (fan damper).
Burner with modulating control RWF
Fig. 25
See the handbook enclosed with the modulating control.
Switching times are given in seconds, in the burner start-up sequence.
RFGO A13
t1
t2
t3
t4
t5
30s
2s
4s
20s
optional
t6
t7
t8
t9
optional
12s
4s
16s
Tab. L
4.15.3 Firing failure
If the burner does not fire, it locks out within 2.5 seconds from
opening the pilot valve and then within 5 seconds from opening
the main valves.
4.15.4 Burner flame goes out during operation
If the flame should accidentally go out during operation, the burner
will lock out within 1 s.
20154169
Key for the times
t1
Pre-purge time with air damper open
t2
Safety time
t3
Pre-ignition time, short (ignition transformer on terminal 16)
t4
Interval between start of t2 and release of valve at terminal 19
t5
Interval between end of t4 and release of load controller or
valve at terminal 20
t5
Running time of air damper into OPEN position
t6
Running time of air damper into low-flame position (MIN)
t7
Post-purge time
t8
Interval until OPEN command for the air damper is given
t9
Running time of pilot
TL
Operating control
TR
Modulating controller
MV
Fan Motor
SM
Air and Fuel Actuator
TA
Ignition transformer
VP1 Safety pilot valve
VP2 Main pilot valve
V1
Safety gas valve
V2
Main gas valve
24 GB
Start-up, calibration and operation of the burner
5
5.1
Start-up, calibration and operation of the burner
Notes on safety for the first start-up
WARNING
The first start-up of the burner must be carried out
by qualified personnel, as indicated in this manual
and in compliance with the standards and regulations of the laws in force.
Check the correct working of the adjustment, command and safety devices.
WARNING
WARNING
5.2
Refer to paragraph “Safety test - with gas ball
valve closed” on page 29 before the first startup.
Adjustments before first firing
Adjustment of the combustion head, and air and gas deliveries has
been illustrated page 16.
LOW GAS PRESSURE SWITCH
In addition, the following adjustments must also be made:
 open manual valves on the gas train.
 Adjust the low gas pressure switch to the start of the scale
(Fig. 26).
 Adjust the air pressure switch to the zero position of the scale
(Fig. 27).
 Purge the air from the gas line.
 Fit a U-type manometer (Fig. 28) to the gas pressure test point
on the sleeve.The manometer readings are used to calculate
MAX burner input using the tables on page 19.
CAUTION
Before starting up the burner it is good practice to
adjust the gas train so that ignition takes place in
conditions of maximum safety, i.e. with gas delivery
at the minimum.
D9290
Fig. 26
AIR PRESSURE SWITCH
D3854
Fig. 27
D2265
Fig. 28
25 GB
20154169
Start-up, calibration and operation of the burner
5.2.1
Servomotor
The servomotor provides simultaneous adjustment of the air damper, by means of the variable profile cam, and the gas butterfly
valve.
RED CAM
BLUE CAM
The angle of rotation of the servomotor is equal to the angle on the
graduated sector controlling the gas butterfly valve. The servomotor rotates through 90 degrees in 25 seconds.
ORANGE CAM
Do not alter the factory setting for the cams; simply check that they
are set as indicated below:
Red cam: 90°
Limits rotation toward maximum position.
When the burner is at max output the gas butterfly valve must be
fully open: 90°.
Blue cam: 0°
RESET
Limits rotation toward the minimum position. When the burner is
shut down the air damper and the gas butterfly valve must be
closed: 0°.
Orange cam: 15°
D2266
Fig. 29
Adjusts the ignition position and the MIN output.
5.3
Burner start-up
Close the control circuit and set switch 1)(Fig. 30) to “MAN”.
As soon as the burner starts check the direction of rotation of the
fan blade, looking through the flame inspection window 18)(Fig. 4,
page 10).
1
2
D791
5.4
Burner firing
Having completed the checks indicated in the previous heading,
the burner pilot should fire. If the motor starts but the flame does
not appear and the flame safeguard goes into lock-out, reset and
wait for a new firing attempt.
Pilot adjustment has been illustrated page 16.
Having adjusted the pilot, reconnect the main valve and ignite the
main flame; it might require several attempts to purge the air from
the gas lines or to adjust the valve with little gas.
Once the burner has fired, now proceed with calibration operations.
20154169
26 GB
Fig. 30
Start-up, calibration and operation of the burner
5.5
Burner calibration
The optimum calibration of the burner requires an analysis of the
flue gases at the boiler outlet.
Adjust successively:
1 - First firing output
5.5.3
Minimum output
Minimum output must be selected within the firing rate range
shown on page 8.
Press switch 2)(Fig. 30, page 26) “output reduction” until the servomotor has closed the air damper and the gas butterfly valve to 15°
(factory set adjustment).
2 - Max. burner output
3 - Min. burner output
4 - Intermediate outputs between low and high fire
Adjusting gas delivery
5 - Air pressure switch
Measure the delivery of gas from the gas meter.
– If this value is to be reduced, decrease the angle of orange cam
(Fig. 29, page 26) slightly by proceeding a little at a time until
the angle is changed from 15° to 13° or 11°....
– If it has to be increased press the switch “output
increase” 2)(Fig. 30, page 26) (i.e. open the gas butterfly valve
by 10-15°), increase the orange cam angle (Fig. 29, page 26)
with small successive movements, i.e. take it from angle 15° to
17° - 19°.... Then press the switch “output decrease” until the
servomotor is taken to the minimum opening position and
measure the gas delivery.
6 - Minimum gas pressure switch
5.5.1
Firing output
Pilot adjustment has been illustrated on page 16.
5.5.2
Maximum output
The maximum output of the burner must be set within the firing rate
range shown on page 8.
In the above instructions we left the burner running in MIN. output
operation. Now press switch 2)(Fig. 30, page 26) “increase output”
and keep it pressed until the servomotor has opened the air damper and the gas butterfly valve to 90°.
Gas calibration
Measure the gas delivery at the meter.
A guideline indication can be calculated from the table on page 6,
simply read off the gas pressure on the U-type manometer, see
Fig. 28, and follow the instructions on page 19.
– If delivery needs to be reduced, reduce outlet gas pressure
and, if it is already very low, slightly close adjustment valve.
– If delivery needs to be increased, increase outlet gas pressure.
Adjusting air delivery
Progressively adjust the end profile of cam 3)(Fig. 31) by turning
the cam adjustment screws as they appear through the access
opening 5)(Fig. 31).
– Turn the screws clockwise to increase air delivery.
– Turn the screws counter-clockwise to reduce air delivery.
D2267
NOTE:
The servomotor follows the adjustment of cam only when the
cam angle is reduced. If it is necessary to increase the cam angle, first increase the servomotor angle with the switch “output increase”, then increase the orange cam angle, and at the
end bring the servomotor back to the MIN output position with
the switch “output decrease”.
Adjustment of air delivery
Progressively adjust the starting profile of cam 3)(Fig. 31) by turning the screws working through the access hole 5)(Fig. 31).
5.5.4
Intermediate outputs
Adjustment of gas delivery
No adjustment of gas delivery is required.
Adjustment of air delivery
With the switch 1)(Fig. 30, page 26) move in intermediate outputs
and set the variable profile cam 3) by turning the screws 4).
– If the burner operation is low-high it is sufficient to set only minimum and maximum firing rates
– If the burner operation is modulating, all the points of modulation should be adjusted.
When the adjustment is complete, release the servomotor and
manually check there is no binding of the cam.
Fig. 31
Key
1 Servomotor
2 Lever, push to engage, push to release
3 Adjustable profile cam
4 Cam profile adjustment screws
5 Opening for access to screws 4)
6 Index for graduated sector 7)
7 Graduated sector for gas butterfly valve
27 GB
20154169
Start-up, calibration and operation of the burner
5.6
Final calibration of the pressure switches
5.6.1
Air pressure switch - CO check
Adjust the air pressure switch after having performed all other burner adjustments with the air pressure switch set to the start of the
scale (Fig. 32).
With the burner operating, increase adjustment pressure by slowly
turning the relative dial clockwise until the burner locks out.
Then turn the dial anti-clockwise by about 20% of the set point and
repeat burner starting to ensure it is correct.
D3854
If the burner locks out again, turn the dial anti-clockwise a little bit
more.
As a rule, the air pressure switch must prevent the
formation of CO.
WARNING
To check this, insert a combustion analyser into the
chimney, slowly close the fan suction inlet (for example with cardboard) and check that the burner
locks out, before the CO in the fumes exceeds 400
ppm.
Fig. 32
The air pressure switch may operate in "differential" operation in
two pipe system. If a negative pressure in the combustion chamber
during pre-purging prevents the air pressure switch from switching,
switching may be obtained by fitting a second pipe between the air
pressure switch and the suction inlet of the fan. In this way the air
pressure switch operates as differential pressure switch.
5.6.2
Low gas pressure switch
Adjust the low gas pressure switch after having performed all the
other burner adjustments with the pressure switch set at the start
of the scale (Fig. 33).
D9290
With the burner operating, increase adjustment pressure by slowly
turning the relative dial clockwise until the burner locks out.
Then turn the dial anti-clockwise by 0.8” WC and repeat burner
starting to ensure it is uniform.
If the burner locks out again, turn the dial anti-clockwise again by
0.4” WC.
Fig. 33
Make sure that the mechanical locking systems on
the different adjustment devices are fully tightened.
WARNING
20154169
28 GB
Maintenance
6
6.1
Maintenance
Notes on safety for the maintenance
The periodic maintenance is essential for the good operation, safety, yield and duration of the burner.
Before carrying out any maintenance, cleaning or checking operations:
It allows you to reduce consumption and polluting emissions and to
keep the product in a reliable state over time.
DANGER
Disconnect the electrical supply from the burner by
means of the main system switch.
The maintenance interventions and the calibration
of the burner must only be carried out by qualified,
authorised personnel, in accordance with the contents of this manual and in compliance with the
standards and regulations of current laws.
DANGER
Turn off the fuel interception tap.
DANGER
Wait for the components in contact with heat sources to cool down completely.
6.2
Maintenance programme
6.2.1
Maintenance frequency
The combustion system should be checked at least once a year
by a representative of the manufacturer or another specialised
technician.
6.2.2
WARNING
Safety test - with gas ball valve closed
It is fundamental to ensure the correct execution of the electrical
connections between the gas solenoid valves and the burner to
perform safely the commissioning.
6.2.3
3
4
The manual ball gas valve must be closed
The electrical contacts of the burner limit switch need to be
closed
Ensures closed the contact of the low gas pressure switch
Make a trial for burner ignition.
The start-up cycle must be as follows:
– Starting the fan for pre-ventilation
– Performing the gas valve seal control, if provided
– Completion of pre-ventilation
– Arrival of the ignition point
– Power supply of the ignition transformer
– Electrical Supply of solenoid gas valves.
Since the manual gas ball valve is closed, the burner will not light
up and its control box will go to a safety lockout condition.
The actual electrical supply of the solenoid gas valves can be verified by inserting a tester. Some valves are equipped with light signals (or close/open position indicator) that turn on at the same time
as their power supply.
Checking and cleaning
The operator must use the required equipment during maintenance.
For this purpose, after checking that the connections have been
carried out in accordance with the burner's electrical diagrams, an
ignition cycle with closed gas ball valve -dry test- must be performed
1
2
IF THE ELECTRICAL SUPPLY OF THE GAS
VALVES OCCURS AT UNEXPECTED TIMES, DO
NOT OPEN MANUAL GAS BALL VALVE,
SWITCH OFF POWER LINE; CHECK THE
WIRES; CORRECT THE ERRORS AND REPEAT
THE COMPLETE TEST.
Combustion
The optimum calibration of the burner requires an analysis of the
flue gases. Significant differences with respect to the previous
measurements indicate the points where more care should be exercised during maintenance.
In case the combustion values found at the beginning of the intervention do not respect the standards in force or, in any case, do not
correspond to a proper combustion, contact the Technical Assistant and have him carry out the necessary adjustments.
Combustion head
Open the burner and make sure that all components of the combustion head are in good condition, not deformed by the high
temperatures, free of impurities from the surroundings and correctly positioned. If in doubt, disassemble the elbow
fitting 7)(Fig. 36, page 31).
29 GB
20154169
Maintenance
Fan
Check to make sure that no dust has accumulated inside the fan or
on its blades, as this condition will cause a reduction in the air flow
rate and provoke polluting combustion.
D484
Burner
Check that the graduated sector that controls the air damper is secured by the nut 2)(Fig. 31, page 27).
The tightness of the screws that fasten the cables to the burner terminal strip must also be checked.
Clean the outside of the burner.
Clean and grease the cam variable profile.
Boiler
Clean the boiler as indicated in its accompanying instructions in order to maintain all the original combustion characteristics intact, especially the flue gas temperature and combustion chamber
pressure.
Fig. 34
20156526
-
Gas leaks
Make sure that there are no gas leaks on the pipework between the
gas meter and the burner.
μA
+
Gas filter
Change the gas filter when it is dirty.
Fig. 35
Flame inspection window
Clean the flame inspection window (Fig. 34).
6.2.5
6.2.4
The safety components should be replaced at the end of their life
cycle indicated in the following table.
Flame presence check
Safety components
The burner is fitted with an ionisation system which ensures that a
flame is present. The minimum current for plant operation is 3 μA.
The burner provides a much higher current, so that controls are not
normally required.
However, if it is necessary to measure the ionisation current, there
are two methods:
 Flame presence check with RFGO function
– Check the level of the flame detection signal with the “Check
mode” function from the flame control: the LEDs from 2 to 6 indicate the flame signal level, respectively. See “LED indicator
and special function” on page 32.
WARNING
The specified life cycles do not refer to the warranty
terms indicated in the delivery or payment conditions.
Safety component
Flame control
Flame sensor
Gas valves (solenoid)
Check Mode
With burner flame on:
– hold the reset button on the flame control pressed for at least
3 sec.;
– the button colour will change from green to yellow;
– each operating status signalling LED will be compared to 20%
of the maximum brightness;
– press the reset button again (<0.5 sec) to reset the standard
operation of the signalling LEDs.Safety components.
 Flame presence check with microamperometer instrument
– disconnect the plug-socket 7)(Fig. 4, page 10) on the ionisation
probe cable and insert a direct current microamperometer with
a base scale of 100 μA.
Pressure switches
Pressure adjuster
operation cycles
10 years or 250,000
operation cycles
10 years or 250,000
operation cycles
10 years or 250,000
operation cycles
15 years
Servomotor
(electronic cam) (if present)
Oil valve (solenoid)
(if present)
10 years or 250,000
Oil regulator (if present)
Oil pipes/ couplings
(metallic) (if present)
Fan impeller
WARNING
10 years or 250,000
10 years or 250,000
Flexible hoses (if present)
Carefully check polarities!
Life cycle
operation cycles
operation cycles
10 years or 250,000
operation cycles
10 years
5 years or 30,000
pressurised cycles
10 years or 500,000 start-ups
Tab. M
20154169
30 GB
Maintenance
6.3
Opening the burner
Disconnect the electrical supply from the burner by
means of the main system switch.
DANGER
Close the fuel interception tap.
DANGER
Wait for the components in contact with heat sources to cool down completely.
6.4
Switch off the electrical power;
remove screw 1)(Fig. 36) and withdraw cover 2);
disengage the swivel coupling 3) from the graduated sector 4).
remove screw 5), the split pin 9) and pull the burner back by
about 4” on the slide bars 6);
 disconnect the probe and electrode leads and then pull the
burner fully back;
 turn the burner as shown in the figure and fit the split pin 9)
into one of the slide bar holes so that the burner remains in
position;
 now extract the gas distributor 7) after having removed the
screw 8) and disconnecting the pilot gas line.




Closing the burner
 Remove the split pin 9)(Fig. 36) and push the burner until it is
about 4” from the sleeve;
 re-connect the leads and slide in the burner until it comes to a
stop;
 refit screw 5), the split pin 9) and pull the probe and electrode
leads gently out until they are slightly stretched;
 re-couple the swivel coupling 3) to the graduated sector 4);
 connect the pilot gas line.
D2268
After carrying out maintenance, cleaning or checking operations, reassemble the cover and all the
safety and protection devices of the burner.
Fig. 36
31 GB
20154169
LED indicator and special function
7
7.1
LED indicator and special function
Description of LED lamps
Fan
It turns on when the fan motor is powered (T6) and blinks when RUN/CHECK switch is set to
“CHECK” during damper movement phases, PTFI AND MTFI.
Open
damper
It blinks when the air damper is moving towards the maximum opening position until the positionreached feedback sent by the servomotor is received, then it stays steadily on for the time set by
the flame control.
Closed
damper
If blinks when the air damper is moving towards the minimum opening position until the positionreached feedback sent by the servomotor is received, then it stays steadily on until the end of the
pre-purging time.
Auto
It indicates that the burner is ready for the output modulation.
Ignition
It blinks during the ignition phase (1st safety time) and stays steadily on during the MTFI.
Flame
It blinks during the first safety time and stays steadily on if the flame detection has been correctly
performed.
Alarm
It turns on in red when a lock-out condition occurs.
Together with the other indicators, it indicates the type of fault during the lock-out phase.
Together with the other LEDs, it indicates the operating status during the normal cycle.
S9740
S9741
S9742
S9743
S9744
S9746
Tab. N
T
= Terminal
PTFI = Pilot ignition attempt
MTFI = Ignition attempt with main fuel valve
7.2
Check mode function
By the reset push button on the main panel of the control flame the
check mode functions are available (prepurging, ignition, 1st safety
time and 2nd safety time).
The CHECK MODE is designed to facilitate the checking of the
working phase of the burner.
This function is particularly useful during the burner first
commissioning or during maintenance.
To enable the check mode function:
•
keep the reset button pressed, see chapter 8 for more details,
for at least 3 seconds, the status LED changes from green to
yellow to signal that the control device is in check mode;
•
the control device locks out during pre-purging, after a timeout
of max 30 minutes the flame control will automatically exit the
check mode function;
7.3
•
check mode has a 2 minute timeout during the 2nd safety time.
When the time out is expired, the flame control goes back to the
normal operating status;
•
check mode has a 2 minute timeout during the MTFI status.
When the time out is expired, the flame control goes back to the
normal operating status;
•
during the check mode 1st or 2nd safety time, the flame signal
level can be indicated by the 5 central LEDS on the flame
control central panel, which turn on proportionally.
Each lit LED (starting from the flame LED) represents 20% of
the signal power.
To exit the check mode function, press the reset button; the
flame control will go back to the normal operating mode.
Flame control lock-out or emergency stop condition
The RFGO control device can be locked (emergency stop) at any
time during the operating cycle and unlocked when already locked
(lock-out) by simply pressing the key on the front panel or by
means of the terminal T21 on the support base.
20154169
32 GB
LED indicator and special function
7.4
LED lamps: burner operating status
OPERATING STATUSES INDICATED BY LEDS DURING NORMAL OPERATION AND CHECK MODE
Operation
LED ● = ON
Icon
Open
damper
Fan
S9740
Power OFF/ON
Not ready/
Diagnostics
Standby
Servomotor
movement
(Note 3)
Waiting for closing
Closed
damper
S9741
Modulation
S9742
Ignition
S9743
Flame
S9744
Status
S9745
S9746
OFF
Green
●
OFF
Flashing
●
●
●
Flashing
OFF
Green
Green
Green
blinking
Green
OPEN
(before ignition)
Minimum
(before ignition)
Ignition
PTFI
●
●
●
MTFI
Active modulation
Minimum output
position
With flame present
Economy mode
Check during maximum
opening phase
Check during minimum
closing phase
Check during ignition
phase with pilot PTFI
Check during ignition
phase with main fuel
valve MTFI
Fault/lock-out
End of the cycle
●
●
●
●
●
●
Green
●
●
●
●
Green
●
●
●
●
●
●
Flashing
●
Green
Green
blinking
●
●
Green
●
Green
●
Green
Green
●
Flashing
Green
Green
Yellow
●
Yellow
Flashing
● Note 1
● Note 1
● Note 1
● Note 1
● Note 1
Yellow
Flashing
● Note 1
● Note 1
● Note 1
● Note 1
● Note 1
Yellow
● Note 2
●
● Note 2
● Note 2
●
● Note 2
●
● Note 2
● Note 2
Red
Green
Tab. O
1. LEDs form a progress bar which indicates the Flame Signal
Power in order to orientate the sensors during commissioning
(LEDs “Grow” upwards, moving away from the Status at 20%
intervals of flame power.)
2. LEDs indicate the error or lock-out code for troubleshooting.
3°.LEDs change from ON to BLINKING to OFF showing the
servomotor movement control until the position-reached
feedback is received See “Problems - Causes - Remedies
signalled by LED indicators” on page 34.“.
33 GB
20154169
Problems - Causes - Remedies signalled by LED indicators
8
Problems - Causes - Remedies signalled by LED indicators
When an emergency stop occurs, the control device LEDs indicate
the cause of the stop.
The terminal T3 is not powered.
The device operating status is internally memorised in case of lack
of power supply.
WARNING
The device lock-out condition can be caused by pressing (<1sec.)
the reset button on the flame control front side or through the
remote reset - terminal T21 on the base.
The reset button is very sensitive, do not press it strongly during the
reset operation.
Unlocking the control device
The RFGO control device can be reset in two ways: reset button
and remote reset terminal.
The remote reset must be a normally open connected button
between T21 and flame control power supply voltage (see
illustrative diagrams):
•
the reset is performed when a faulty condition is detected by
the flame control.
•
Press the reset button to reset the system after a lock-out.
•
Pressing the reset button during operation will cause an
emergency stop.
•
The reset or emergency stop condition can be obtained also by
using the remote reset with the same modalities.
•
The number of reset attempts is limited to a maximum of 5
within 15 minutes.
Error / RFGO LED lock-out Codes
During an alarm condition, the status LED becomes steady red.
The remaining LEDs turn on according to a coded sequence which
identifies the lock-out cause.
The following table shows the different LED Lock-out codes.
WARNING
20154169
The device described in this manual can cause
material problems, severe injuries or death.
It is the owner or user’s responsibility to make sure
that the equipment described is installed, used and
commissioned in compliance with the requirements
provided both by national and local law. The lockout condition indicates the presence of a fault
which occurred during the operating cycle or during
stand-by mode.
Before performing an unlock attempt, it is
necessary to restore the original optimal operating
conditions.
34 GB
WARNING
Thermal unit’s operation, maintenance and
troubleshooting interventions must be carried out
by trained personnel.
The persons who solve lock-out problems or reset
the control device must observe the error codes to
solve the problems described in this product
technical data sheet.
It is not admitted to tamper with or act on the
system or control in a way that could compromise
the product safety or warranty.
Any tests on safety devices or on loads, such as fan
motor, valves, igniter, flame sensors, must be
performed with the shut-off valves closed and by
qualified personnel.
Do not by-pass nor exclude the safety devices
connected to the flame control.
Failure to observe these guidelines will exclude any
liability.
The regulation prohibits the system from allowing
more than 5 remote reset attempts within a 15
minute time window.
If more than 5 attempts are performed without
solving the lock-out, the system will prevent the
user to perform further remote resets and force
him/her to wait for the 15 minutes to elapse.
The remote reset operation will be restored at the
end of the waiting time.
It is recommended that qualified personnel
evaluate the lock-out condition and implement the
solution which is suitable for the fault to be solved.
Problems - Causes - Remedies signalled by LED indicators
Error / RFGO LED lock-out codes
No
Faults
Operation
LED ● = ON
Icon
LED 1
LED 2
LED 3
LED 4
LED 5
LED 6
LED 7
Fan
Open
damper
Closed
damper
Auto
Ignition
Flame
Status
S9740
1
2
3
4
5
Post-diagnostics fault
Local reset
Combustion air fan fault
Supervisor processor diagnostics fault
FR- NO Flame at the end of the 2nd safety
time (MTFI)
FR: internal circuit fault
Internal communication fault
Remote reset
FR: internal fault
Main processor fault
Data memory test fault
Data memory test fault
Mains voltage or frequent fault
Internal processor fault
Internal processor fault
6
7
8
9
10
11
12
13
14
15
o. 16 No flame: 1st safety time (PTFI)
17 Wiring fault
18 Safety relay fault
19 Combustion airflow switch fault in the rest
position
20 UV: no flame at the end of the 2nd safety
time (MTFI)
21 Safety relay fault
22 Supervisor processor fault
23 Supervisor memory test fault
24 Flame loss during the operation (AUTO)
25 Supervisor processor data memory fault
26 Supervisor processor internal fault
27 Not used
28 Not used
29 Operating temperature out of range
30 Code memory fault
31 FR: external short circuit
32 Check mode timeout (manual)
33 False flame in stand-by mode
34 Not used
35 Internal processor timeout
36 Internal processor timeout
37 Combustion air check timeout
38 Internal processor timeout
39 Internal processor timeout
40 Internal hardware fault
41 Internal hardware fault
42 Main processor fault
43 Supervisor processor fault
S9741
S9742
S9743
S9744
S9745
●
●
●
●
●
Red
●
●
Red
Red
Red
Red
Red
Red
Red
Red
Red
Red
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
Red
●
●
Red
Red
●
●
Red
●
●
Red
●
●
●
●
●
●
●
●
●
●
●
●
Red
Red
Red
Red
Red
Red
●
●
●
●
●
●
●
Red
Red
Red
Red
Red
●
●
●
●
●
●
●
●
●
Red
Red
Red
Red
Red
Red
Red
Red
Red
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
35 GB
S9746
Red
Red
Red
Red
●
●
●
●
●
20154169
Problems - Causes - Remedies signalled by LED indicators
No
Faults
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
Supervisor processor timeout
Off-specification mains voltage
Off-specification mains voltage
UV: Internal fault
Supervisor processor fault
Main processor fault
Ignition feedback fault
Pilot feedback fault
Piloted valve feedback fault
Actuator feedback waiting time expired
Direct ignition valve feedback fault
Internal processor fault
UV: false flame during operation
FR: false flame during operation
T8 inlet fault
Internal hardware fault
Local reset fault
Open POC fault
UV: strong UV flame fault
Internal hardware fault
LED 1
LED 2
LED 3
LED 4
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
LED 5
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
LED 6
LED 7
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
Red
Red
Red
Red
Red
Red
Red
Red
Red
Red
Red
Red
Red
Red
Red
Red
Red
Red
Red
Red
Tab. P
20154169
36 GB
Problems - Causes - Remedies signalled by LED indicators
Fault explanation
No
1
Faults
Post-diagnostics fault
Cause
Solution
Initial power diagnostics fault
Make sure that the status of inlets and outlets Check T12, T13 and T14
is correct upon ignition
2
Local reset
The user started the manual reset or the reset
Check T21 inlet or reset for normal operation
switch is faulty
3
Combustion air fan fault
No Air Check signal (T14) during the bleed
cycle or Air Check signal loss during the Check the fan or the air pressure switch
burner operation
4
Supervisor
processor The system detected the presence of voltage
Check the wiring and make sure that the
diagnostics fault
on T16, T17, T18 or T19 at the wrong
system is operating on a single-phase line
moment or there is no voltage when
(50/60Hz)
necessary
5
FR- No flame at the end of the
Inspect the system, check the gas pressure,
No flame at the end of the second safety time inspect the flame detection electrode, check
2nd safety time (MTFI)
the wiring, etc.
6
FR: internal circuit fault
Internal fault
Replace the control device
7
Internal communication fault
Internal fault
Replace the control device
8
Remote reset
The user pressed the remote reset button or
Check the remote switch
the reset switch is discontinuous/dynamic
9
FR: internal fault
Internal fault
Replace the control device
10 Main processor fault
Internal fault
Replace the control device
11 Data memory test fault
Internal fault
Replace the control device
12 Data memory test fault
Internal fault
Replace the control device
13 Mains voltage or frequent fault
Off-specification power supply voltage and/or
Check the input power supply
frequency
14 Internal processor fault
Internal fault
Replace the control device
15 Internal processor fault
Internal fault
Replace the control device
o. 16 No flame: 1st safety time (PTFI)
Inspect the system, check the gas pressure,
No flame at the end of the first safety time
check the flame sensor, check the wiring, etc.
17 Wiring fault
The system detected the presence of voltage
Inspect the wiring and make sure that the
on critical terminals (T16, T17, T18 or T19) at
system is operating on a single-phase line
the wrong moment or there is no voltage
(50/60Hz)
when necessary
18 Safety relay fault
Internal fault
Replace the control device
19 Combustion airflow switch fault
Open the circuit upon T13 start-up
Check the wiring for the air pressure switch
in the rest position
20 UV: no flame at the end of the
Inspect the system, check the gas pressure,
No flame at the end of the 2nd safety time
check the flame sensor, check the wiring, etc.
2nd safety time (MTFI)
21
22
23
24
Safety relay fault
Internal fault
Replace the control device
Supervisor processor fault
Internal fault
Replace the control device
Supervisor memory test fault
Internal fault
Replace the control device
Flame loss during the operation
Loss of flame
Check the flame sensor or the fuel flow line
(AUTO)
Supervisor
processor
data
Internal fault
Replace the control device
memory fault
Supervisor processor internal
Internal fault
Replace the control device
fault
Not used
Not used
Operating temperature out of Operating temperature below -40°C or above Bring the control device within the specified
range
temperature nominal values
70°C
25
26
27
28
29
30
31
Code memory fault
FR: external short circuit
32
Check mode timeout (manual)
Internal fault
Replace the control device
External short circuit between T24 and
Inspect the flame detection electrode
EARTH
The interval for the manual mode (30 Exit the manual mode correctly to avoid
minutes) to end has elapsed
timeout
37 GB
20154169
Problems - Causes - Remedies signalled by LED indicators
No
33
Faults
False flame in stand-by mode
34
35
36
37
Not used
Internal processor timeout
Internal processor timeout
Combustion air check timeout
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
Cause
Solution
Unexpected flame (false or parasitic flame)
Check flame sensor or interference
detected during the Stand-by status
Internal fault
Replace the control device
Internal fault
Replace the control device
The system could not perform verification
tests of the combustion air during the burner Check the wiring or the air pressure switch
sequence
Internal processor timeout
Internal fault
Replace the control device
Internal processor timeout
Internal fault
Replace the control device
Internal hardware fault
Internal fault
Replace the control device
Internal hardware fault
Internal fault
Replace the control device
Main processor fault
Internal fault
Replace the control device
Supervisor processor fault
Internal fault
Replace the control device
Supervisor processor timeout
Internal fault
Replace the control device
Off-specification mains voltage
Check the mains voltage level or the
frequency. Contact the factory if the problem
Off-specification mains voltage/frequency
persists
Off-specification mains voltage
Check the mains voltage level or the
frequency.
Off-specification mains voltage/frequency
Contact the factory if the problem persists
UV: Internal fault
Internal fault
Replace the control device
Supervisor processor fault
Internal fault
Replace the control device
Main processor fault
Internal fault
Replace the control device
Ignition feedback fault
Check the wiring and make sure that the
The system detected the presence of voltage
earthing is appropriate
on T16 at the wrong moment or there is no
If the problem persists, contact the distributor/
voltage when necessary
factory
Pilot feedback fault
The system detected the presence of voltage Check the wiring and make sure that the
on T17 at the wrong moment or there is no earthing is appropriate. If the problem
voltage when necessary
persists, contact the distributor/factory
Piloted valve feedback fault
Check the wiring and make sure that the
The system detected the presence of voltage
earthing is appropriate
on T19 at the wrong moment or there is no
If the problem persists, contact the distributor/
voltage when necessary
factory
Actuator feedback waiting time No actuator feedback on T8 for more than 10 Check the wiring
expired
minutes
Check the modulation equipment
Direct ignition valve feedback The system detected the presence of voltage Check the wiring and make sure that the
fault
on T18 at the wrong moment or there is no earthing is appropriate. If the problem
voltage when necessary
persists, contact the distributor/factory
Internal processor fault
Internal fault
Replace the control device
UV: false flame during operation False flame detected before ignition
Check the flame sensor
FR: false flame during operation
Check the wiring
False flame detected before ignition
Check the flame sensor
Make sure that earthing is appropriate
T8 inlet fault
The system detected the presence of voltage
Check the wiring
on T8 at the wrong moment or there is no
Check the actuator
voltage when necessary
Internal hardware fault
Internal fault
Replace the control device
Local reset fault
Local reset button pressed for more than 10 If the problem persists, replace the control
seconds or reset button locked
device
Open POC fault
The fuel valve is open at the wrong moment Check the wiring
UV: strong UV flame fault
Increase the distance between the sensor
and the flame OR use an orifice to reduce the
The flame sensor is too close to the flame
view field
Internal hardware fault
Internal fault
Replace the control device
Tab. Q
20154169
38 GB
16
70
71
72
51
21
13
17
76
12
75
14
23
20
29
11
74
39
10
24
25
26
15
39 GB
7
8
9
38
69
1
2
30
27
40
42
3
31
4
58
55
57
32
60
40
33
45
62
64
36
56
34
44
66
73
46
67
63
47
35
49
68
53
64
52
50
43
22
A
18
28
37
Appendix - Spare parts
Appendix - Spare parts
20154169
1
3012986
1
3003760
2
3012063
•
•
•
3
3003830
•
•
4
3003890
•
7
3003843
8
•
•
RS 50/M - 20154146 (20166043)
•
RS 50/M - 20154137
3012985
RS 50/M - 20154141
1
RS 38/M - 20154131
CODE
RS 38/M - 20154134
RS 38/M - 20154129 (20166042)
N.
RS 28/M - 20154108 (20165993)
Appendix - Spare parts
•
DESCRIPTION
*
FAN
C
FAN
C
C
•
•
•
FAN
•
•
•
•
GRADUATE SECTOR
•
•
•
•
•
SOUND DAMPING
•
•
•
•
•
•
AIR INTAKE
•
•
•
•
•
•
•
PIN
20098438
•
•
•
•
•
•
•
LEVER
9
3003841
•
•
•
•
•
•
•
BEARING
10
3003763
•
•
•
•
•
•
•
INSPECTION WINDOW
11
3003842
•
•
•
•
•
•
•
BAR
12
3012987
•
•
•
•
•
•
12
3013873
13
3003766
•
•
•
•
•
14
3007627
•
•
•
•
15
3013009
•
•
•
16
20144930
•
•
•
17
3012989
•
•
17
20006633
18
20154704
18
3013131
20
3012956
•
•
•
•
•
•
•
TRANSFORMER
B
21
3012080
•
•
•
•
•
•
•
SWITCH
C
22
3013008
•
•
•
•
•
•
•
SERVOMOTOR
B
23
3012993
•
•
MOTOR 120V
C
23
3012994
MOTOR 208-230/460V
C
23
3013057
MOTOR 575V
C
23
3013869
•
MOTOR 120V
C
24
3003778
•
•
•
•
•
•
•
SHORT SHAFT
25
3003891
•
•
•
•
•
•
•
CONNECTOR
C
26
3012948
•
•
•
•
•
•
•
AIR PRESSURE SWITCH
B
27
3012089
•
•
•
•
•
•
27
3013872
28
20155571
20154169
COVER
•
COVER
•
•
SCREW
•
•
•
MEMBRAN
•
•
•
•
PILOT TUBE
•
•
•
•
CONTROL BOX
B
CONTACTOR
C
CONTACTOR
C
•
•
•
•
•
STARTER
•
•
STARTER
•
•
•
•
•
C
•
•
•
FRONT SHIELD
•
FRONT SHIELD
•
PROBE LEAD
40 GB
A
CODE
RS 38/M - 20154129 (20166042)
RS 38/M - 20154134
RS 38/M - 20154131
RS 50/M - 20154141
RS 50/M - 20154137
29
3012995
•
•
•
•
•
•
30
3003844
•
30
3003845
30
3003846
31
3003854
•
•
•
32
3013129
•
•
•
33
3003857
•
33
3003859
33
3003861
34
3012081
34
3012083
35
3012998
35
3012997
35
3012999
36
3003865
36
3003866
36
3003867
37
3012174
•
•
•
38
3013136
•
•
39
3013001
•
40
3013002
42
RS 50/M - 20154146 (20166043)
N.
RS 28/M - 20154108 (20165993)
Appendix - Spare parts
DESCRIPTION
*
•
H.T.LEAD
A
FERRULE
•
•
•
FERRULE
•
•
•
FERRULE
•
•
•
•
ELBOW
•
•
•
•
EXTERIOR TUBE
INTERIOR TUBE
•
•
•
INTERIOR TUBE
•
•
•
•
INTERIOR TUBE
GAS HEAD
•
•
•
•
•
•
•
•
•
•
•
•
•
•
GAS HEAD
DISC
A
DISC
A
DISC
A
TUBE
•
•
•
TUBE
•
•
•
TUBE
•
•
•
•
PROBE
A
•
•
•
•
•
ELECTRODE
A
•
•
•
•
•
•
U BOLT
•
•
•
•
•
•
•
SUPPORT
3003863
•
•
•
•
•
•
•
PLUG
43
3013007
•
•
•
•
•
•
•
SUPPORT
44
3012085
•
•
•
•
•
•
•
AIR DAMPER ASSEMBLY
45
3003873
•
•
•
•
•
•
•
TEST POINT
46
3013196
•
46
3013198
46
3003803
47
3003798
47
3003838
49
3003805
49
3003806
50
3003807
50
3003809
CONTROL DEVICE
•
•
•
CONTROL DEVICE
•
•
•
•
•
•
•
•
•
•
•
•
CONTROL DEVICE
FRONT PIECE
•
•
•
•
•
•
•
•
•
FRONT PIECE
SHUTTER
C
SHUTTER
C
END CONE
B
END CONE
B
41 GB
20154169
RS 50/M - 20154141
RS 50/M - 20154137
RS 50/M - 20154146 (20166043)
•
•
•
END CONE
•
•
•
•
CONTROL BOX BASE
•
•
•
•
•
CONNECTOR
•
•
•
•
•
•
GRADUATE SECTOR
•
•
•
•
•
•
•
MANIFOLD
3003878
•
•
•
•
•
•
•
INDEX
57
3005483
•
•
•
•
•
•
•
SEAL
58
3013004
•
•
•
•
•
•
•
ELBOW
60
3003829
•
•
•
•
•
•
•
HALF-SHELL
62
3003888
•
•
•
•
•
•
•
SPACER
63
3003883
•
•
•
•
•
•
•
DOME
64
3006098
•
•
•
•
•
•
•
PIN JOINT
66
3003881
•
•
•
•
•
•
•
TIE ROD
67
3012062
•
•
•
•
•
•
•
CAM
68
3013006
•
•
•
•
•
•
•
SHAFT
69
3013478
•
•
•
•
•
•
•
SPRING - LEVER
A
70
3013874
•
PROTECTION
A
71
3012841
•
•
•
•
•
•
•
BASE
72
20010969
•
•
•
•
•
•
•
RELAY
73
3012734
•
•
•
•
•
•
•
SEAL FOR MANIFOLD
74
20073810
•
•
•
•
•
•
•
U BOLT
75
3006607
•
•
•
•
•
•
•
3 POLES PLUG
76
3006608
•
•
•
•
•
•
•
3 POLES SOCKET
N.
CODE
50
3003811
51
20144947
•
•
•
52
3003893
•
•
53
3003875
•
55
3013003
56
RS 38/M - 20154131
DESCRIPTION
RS 38/M - 20154134
RS 38/M - 20154129 (20166042)
RS 28/M - 20154108 (20165993)
Appendix - Spare parts
*
ADVISED PARTS
A
= Spare parts for minimum fittings
A+B
= Spare parts for basic safety fittings
A+B+C = Spare parts for extended safety fittings
20154169
42 GB
*
B
C
Appendix - Accessories
B
Appendix - Accessories
Long head kit
Burner
Standard head length (inch)
Length obtainable with the kit
(inch)
Code
RS 28/M
81/2”
1313/16
3010256
RS 38/M
81/2”
13 13/16”
3010257
RS 50/M
81/2”
13 13/16”
3010258
Kit for LPG operation
The kit allows the RS 28-38-50/M burners to operate on LPG.
Burner
Output
MBtu/hr
Blast tube length
inch
Code
RS 28/M
RS 38/M
RS 50/M
358 - 1232
437 - 1665
549 - 1986
81/2“
1313/16“
3010270
81/2“
1313/16“
3010271
81/2“
1313/16“
20043293
RWF kit
Burner
Code
All models
20094961
UV flame sensor kit
Burner
Code
All models
20182554
Gas train according to UL Standards
WARNING
The installer is responsible for the supply and installation of any required safety device(s) not indicated
in this manual.
43 GB
20154169
Appendix - Burner start up report
C
Appendix - Burner start up report
Model number:
Project name:
Installing contractor:
Serial number:
Start-up date:
Phone number:
Model number:
Serial number:
Project name:
Start-up date:
Installing contractor:
Phone number:
GAS OPERATION
Gas Supply Pressure:
CO2: Low Fire
High Fire
Main Power Supply:
O2: Low Fire
High Fire
Control Power Supply:
CO: Low Fire
High Fire
Burner Firing Rate:
NOX: Low Fire
High Fire
Manifold Pressure:
Net Stack Temp - Low Fire:
High Fire
Pilot Flame Signal:
Comb. Efficiency - Low Fire:
High Fire
Low Fire Flame Signal:
Overfire Draft:
High Fire Flame Signal:
CONTROL SETTINGS
Operating Set-point:
Low Oil Pressure:
High Limit Set-point:
High Oil Pressure:
Low Gas Pressure:
Flame Safeguard Model
Number:
High Gas Pressure:
Modulating Signal Type:
NOTES
20154169
44 GB
RIELLO S.p.A.
I-37045 Legnago (VR)
Tel.: +39.0442.630111
http:// www.riello.com
RIELLO BURNERS NORTH AMERICA
35 Pond Park Road
http://www.riello.ca
Hingham, Massachusetts,
U.S.A. 02043
Subject to modifications
2165 Meadowpine Blvd
Mississauga, Ontario
1-800-4-RIELLO
Canada L5N 6H6