mark gas burners C.20 - C.24 100 - 240 kW

mark gas burners C.20 - C.24 100 - 240 kW
- mark gas burners
C.20 - C.24
Ox
N
w
Lo
100 - 240 kW
Highly
effective ventilation:
- optimised air reinjection system
- elimination of
vibrations and
pulses
- self-stabilising,
silent operation
Air shutter servomotor.
Cuts off draw when burner is
turned off
Complete access to air system:
- easy maintenance,
- quick disassembly / assembly.
Air pressure control switch
State-of-the-art
combustion head:
- high
combustion
efficiency
- IME® System
- two lengths for use
with all types of
generator
Integrated electrical
device:
- safety and control unit
- connection using multipin connector
- MDE® System
Multi-purpose
clamp:
- quick assembly /
disassembly
- secure attachment
Combustion head adjustment:
high precision for optimal efficiency
Aluminium alloy housing:
- dimensional stability
- lightweight
Access to combustion components:
- bayonet assembly / disassembly
- RTC® System
Innovative technology to make the
burner more accessible.
Medium output burners used in heating
systems must meet five essential
requirements:
Burners are designed, developed and
built in compliance with the European
standards EN 676.
-
CUENOD burners are manufactured in
compliance with the quality assurance
certificate AFAQ ISO 9002.
simple implementation,
easy operation,
reliable and efficient settings,
rational use of energy,
low pollution emissions.
C.20 GX – C.24 GX burners are
equipped with the innovative MDE®
system, which allows technicians to
query the burner at any time and obtain
operating information and details of
startup phases.
All CUENOD burners bear the
mark, indicating compliance with the
relevant European Directives, including
the Efficiency Directive 92/42 EEC,
when installed on
boiler shells.
NOx
w
o
L
The RTC® system.
The combination of a functional
housing design, advanced combustion
head technology and Memorized Head
Settings (RTC®) ensures:
Total access after cover removal.
Quick and easy maintenance.
Complete disassembly of all
combustion head components (short
and long) in a single action without
having to remove or turn the burner.
Memorization of all optimised startup
combustion settings during
maintenance procedures.
•
•
•
•
The AGP® system.
Developed and perfected by CUENOD,
the AGP® system has already won over
gas combustion specialists. The
system is fitted onto our medium and
high output burners.
With this technology, burners
guarantee:
Principle of the AGP® System
Air
Gas
Combustion chamber
• a completely stable air-gas mix,
a high and constant CO2 rate at all
• burner
output levels,
accurate
of excess air,
• essential control
for the optimal running of
Ratio adjustment
Opening
control
condensation generators.
The AGP® system also automatically
corrects the following:
positive and negative gas pressure
variations,
changes in air pressure due to
electrical circuit voltage fluctuations
and atmospheric pressure changes,
output according to pressure
variations in the combustion
chamber, especially during ignition.
•
•
•
Low NOx combustion head.
Burner ventilation.
Modern boiler technology and a
significant number of older generators
led us to create a burner fitted with a
powerful ventilation system that offers:
faster combustion stabilization during
startup,
extremely quiet operation (isolated
air flow system),
reduced sensitivity to fluctuations in
chimney draw.
•
•
•
Multi-Stage Injection
• Combining
System (IME ) design and a powerful
®
•
ventilation system, this head
increases air combustion speed,
homogenises the air-gas mix and
reduces the time combustion
products are in the flame, thus
reducing thermal nitric oxide
formation.
The use of natural gas reduces the
amount of NOx produced to values
below 80mg/kWh for the majority of
standard-sized boilers (contact us for
details).
Easy installation.
The unique design and researched
packaging provides:
Quick and reliable generator
compatibility.
Significantly quicker assembly.
Precise, faultless connections.
Valve installation without the need
for any additional procedures:
assembly and air-tightness
inspections are carried out in the
factory.
Accurate adjustment using clear and
precise combustion head and
servomotor markings.
•
•
•
•
•
A gas rack for complete
safety.
The burners are designed to be used
with natural gas at 20 or 300mbar and
with propane at 37 to 150mbar.
All safety and control components are
included in the control unit:
• filter,
• gas pressure switch,
• safety valve,
• main valve,
• pressure regulator.
The gas rack can be installed above
(casing at bottom), below (casing at
top), on the left or on the right of the
burner.
The gas rack is prewired and factorytested.
The MDE® system:
Operating Data Memorization
Burners are equipped with a new
operating system that may be
consulted at any time.
The system provides two types of data:
1 - "Instantaneous" information
- Burner startup cycle,
- Power supply measurement,
- Flame signal measurement.
2 - "Stored" information
- Burner operation statistics,
- Conditions of use procedures.
This information, available in real
time, can be exported and referenced
using a laptop computer running
CUENOCOM software. The
information can then be sent to the
operating system to facilitate
maintenance.
NOx
w
o
L
Performance charts.
C.20 GX 2 stages
C.20 GX - C.24 GX 1 stage
C.24 GX 2 stages and AGP®
Bulk and dimensions.
ø115 : C20
ø124 : C24
Bulk and dimensions.
A minimum of 0.60m must
be allowed around the
burner for maintenance
purposes.
Ventilation
in the boiler room
1.2m3 of new air is required
for every kWh produced by
the burner.
Note: the burner may be
installed with the casing
either at the top or the
bottom.
Front panel boring.
Valve
Gas pressure
Use
A
C
D
F
G
407
300 mb*
1 stage
2 stages
AGP®
46
46
102
140
214
180
92
92
73
425
425
419
330
400
317
412
20 mb
1 stage
2 stages
AGP®
55
55
100
160
254
169
116
114
96
450
450
452
350
440
320
* The 20mb and 300mb C.20 models are fitted with a 407 valve.
Packing.
The burner and cover are delivered in
a package that weighs approximately
25kg and contains:
- A bag of assembly accessories.
- Boiler plate,
- Documentation, including:
- operating instructions,
- electrical diagram,
- hydraulic diagram,
- certificate of guarantee,
- a self-adhesive label to be used if
the burner is installed with its
casing at the bottom.
- gas rack with valve and built-in filter.
Output levels.
Burner
kW
Min. 1st startup kW
Boiler*
kW
C.20 GX
1 stage
49 AU 2750
min.
max.
C.24 GX
C.20 GX
C.24 GX
1 stage
2 stages
2 stages and AGP®
49 AU 2751
49 AU 2750
49 AU 2751
min.
max. min. max.
min.
max.
100
200
160
/
/
92
184
240
100
200
70
147
221
92
120
70
184
110
* The boiler output is calculated for 92% efficiency and is given for information
purposes only.
240
221
Installation.
Depending on boiler dimensions and
installation conditions, the burner body
may be installed with:
casing at top
casing at bottom
•
•
Leave an area around the burner clear
for maintenance purposes.
The gas rack can be installed to the left
or right irrespective of the burner body
position (casing at top or bottom).
The supply piping section is calculated
to restrict energy loss to between 0.5
and 1mbar at gas pressures of 20 and
37mbar, and between 5 and 10mbar at
pressures of 150 and 300mbar.
Gas flows.
Ventilation in the boiler room.
Flow in m3/h*
Gas type
C.20 GX C.24 GX
Natural gas group H
NCV=9.45kWh/m3
21,2
25,4
Natural gas group L
NCV=8.13kWh/m3
24,6
29,5
Propane
NCV=24.44kWh/m3
8,2
9,8
* at 15°C and 1013 mbar
C.20 GX - C.24 GX 1 stage
Air
The piping diameter must be greater
than the filter diameter.
For information purposes, the following
diagram shows the corresponding gas
flows and maximum burner outputs.
Gas
C.20 GX - C.24 GX 2 stages
Air
Hydraulic diagrams.
Key:
Gas
F4
F6
M1
T1
Y10
Y13
Y15
101
103
104
106
108
110
113
119.1
119.2
119.3
Min. gas pressure switch
Air pressure switch
Burner motor
Transformer
Servomotor
Main gas valve
Safety gas valve
Fan
Air shutter
Pressure regulator
Filter
Manual valve (optional)
Gas injector
Air intake grill
Gas pressure point
Combustion chamber
pressure point
Air pressure point
The air-renewal required is 1.2m3/kWh.
Produced by the boiler.* at 15°C and
1013mbar.
C.24 GX AGP®.
Air
Gas
NOx
w
o
L
Electrical connection.
Electrical installations must be carried
out according to standard NF C 15.100
and other standards currently in force.
Particular attention must be paid to the
burner supply main disconnect switch
which must be able to carry the total
circuit output and isolate the circuit
during maintenance
Supply connection:
(see diagram below)
The supply is connected between
terminals N (neutral) and L1 (live on 7pole plug).
Establish a series connection between
the manually-activated safety
thermostat (or pressure switch) and the
phase power supply.
In the interests of safety, an isolating
transformer and a 30mA differential
circuit breaker should be used when the
supply has no neutral or has neutral
impedance. This circuit must be
protected using a 6.3A delayed action
fuse. The smallest conductor section
must measure 1.5mm2.
Output adjustment.
Operation.
burner.
• 1-stage
All the heat energy is provided
through a single flow.
The flow can be adjusted from “full”
to “off” and vice versa: the burner
ignites and goes out according to
heat requirements.
AGP burners:
• After
startup (which uses approx. 15%
®
burner.
• 2-stages
Two thermal output flows are
available.
These can be adjusted to:
- “Full” or “off”: when output
increases, it moves progressively
through two levels to avoid impact
on a sudden startup.
- “Full” or “low”: a low flow is used
when there is little demand for
heating, or for domestic hot water
supply. The combustion gases are
cooler and increase with the
output.
of the normal flow), the thermal output
progressively increases through two
different flows.
These can be adjusted to:
- “Full” or “off”: progressive output
increase (between 20 and 30
seconds).
The equipment benefits from all
the combustion control of the
AGP® system.
- “Full” or “low”: this type of setting
offers not only the advantages of
the AGP® system, but saves
energy by operating at reduced
power.
- “Modulating”: the burner output is
set to the required level.
Setting connection.
1-stage, 2-stages and AGP® burners:
7-pole plug.
Connect the thermostat or pressure
governor between terminals T1 and T2.
2-stages burners:
4-pole plug.
- Connect terminals T6 and T8 for “full”
flow or “off”.
- Connect the two-way contact
instruments to terminals T6, T7 and
T8 for “full” or “low” flows controlled
by a thermostat or pressure switch.
4-pole plug
2-stages and AGP®
{
{
AGP® burners:
4-pole plug.
- Connect terminals T6 and T8 for “full”
flow or “off”.
- Connect the two-way contact
instruments to terminals T6, T7 and
T8 for “full” or “low” flows controlled
by a thermostat or pressure switch.
- Connect the 3 points to terminals T6,
T7 and T8 for a “modulating” flow
controlled by a PID regulator.
7-pole plug
All models
Was this manual useful for you? yes no
Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Download PDF

advertising