Enertech Nu-Way MGN320 S1L 355 Caractéristiques techniques
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Installation- and maintenance instruction
MGN320 S1L 355
Components
1. Cover,inspection glass
2. Air pressure switch
3. Air adjustment
4. Inner assembly adjustment
(not town gas)
5. Multibloc
6. Flame cone
7. Connecting pipe
16. Motor
17. Ignition electrode
18. Transformer
19. Ionization electrode
20. Inner assembly
21. Nozzle
22. Brake plate
8. Air dampe
9. Air intake
10. Gas pressure switch
11. Ball valve
12. Control box
13. Electrical connection
14. Reset button
15. Fan wheel
172 205 39 08-01
DESCRIPTION
Capacity chart according
to EN 676
Output range
TECHNICAL DATA
The above dimensions are max. measurements. Depending on the compo-
nents used, the measurements may vary.
172 215 65 09-01
1
Natural gas 10 kWh/Nm3
LPG 26 kWh/Nm3
2) Dimension and capacity depen-
ding on gas quality and available
pressure
Type Capacity
kW
Gas volume at a min.
output Nm3/h 1)
Gas volume at a max
output Nm3/h 1)
Max. inlet
pressure mbar
Rated inlet
pressure mbar
Natural gas/LPG Natural gas LPG Natural gas LPG Natural gas LPG
400 60-318 6 2,3 31,8 12,2 100 20 20
(5,0 kg/h) (24,8 kg/h)
2) Town gas 2) Town gas 2) Town gas 2) Town gas
Type designation BG 400
Dimensions
Length of burner tube Measure A
Standard 172 155
272 255
Long design 372 355
2) Motor Ignition transformer
Natural gas, LPG 1-phase, 0,25 kW, Primary 230 V, 1, A
1" 2 800 r/m, 230 V Secondary 8 000 V
2) Town gas
506
ø108
A 100
192
250
410
ø140
410
TECHNICAL DATA
172 215 30 07-01
ø175-240
M10
ø140
SKELETON DIAGRAMS, 1-STAGE BURNER
1.Ball valve
2.Filter
3.Governor
4.Pressure gauge with shut-off cock
5a.Gas pressure switch, mini
5b.Gas pressure switch, maxi
6a.Main valve
6b.Safety valve
1)7.Valve proving system
9.Air pressure switch
10.Gas burner control
according to EN 676.
1) Required over 1200 kW according
to EN 676.
When Bio gas is used, Bentone shall always be contacted.
!
172 415 04 08-01
Incorporated in the MultiBloc
3
6b
5b
10
6a
9
7
12
5a
4
Removal of fan house unit from
burner.
Loosen the screws. Swing out the fan
house. Remove the ionisation and
ignition cables from the electrodes.
Remove the combustion unit from the
as a pattern.
Removal of valve unit from burner
Remove the plug-in contact from the
multi-bloc. Loosen the union nut.
MOUNTING ON THE BOILER
Installation example
Connect the gas to the burner by
means of the ball valve. Ensure that
the union nut, ball valve and tubing
make it easy to remove the burner for
inspection and service.
172 205 36 08-01
172 425 16 08-01
ELECTRIC EQUIPMENT
Component list
A1 Gas burner control
A2 Twin thermostat
B1 Ionization electrode
F1 Fuse
H1 Alarm, 230 V
If there is no plug-in contact (X2) on the
boiler, connect to the contact enclosed.
In case the twin thermostat is in series
on incoming phase L1,
a loop between the terminals T1 and
T2 is necessary.
Mains connection in accordance with local regulations.
M1 Burner motor
S3 Main switch
S8 Air pressure switch
S9 Gas pressure switch
T1 Ignition transformer
X1 Plug-in contact, burner
X2 Plug-in contact, boiler
Y1 Gas solenoid valve
Gas burner control: LGB21/LMG21/LME11/LME21
Wiring diagram
1(5)
172 425 16 08-01
ELECTRIC EQUIPMENT
Control diagnosis under fault conditions and lockout indication
Gas burner control: LGB
Lock-out and Control Programme Indication
The position of the cam can be read through the sight-glass. Under fault condition
the programme is stopped and thus also the lock-out indicator. The symbol visible on
the cam indicates both the position in the programme run and the type of fault. The
No start because the control loop is interrupted
Waiting for the pre-purge to start
Air damper open (LGB22)
Fault condition due to absence of air pressure signal (LGB21),
air damper not open (LGB22)
Pre-purge period
Fuel release (LGB22)
safety time
Release of the 2nd fuel valve (LGB21)
Release of the load controller LR (LGB22)
Partial or full load operation (or return to the operating position)
Control Programme in Case of Faults
Basically, the fuel supply is stopped immediately in the case of any fault. If the fault
condition occurs at a time between start and pre-ignition, which is not indicated by
symbols, the cause is usually a switch-off by the air pressure switch LP or a too early,
• After supply voltage failure: Start-up repetition with unabridged programme.
•
• If contacts of air pressure switch LP have welded during tw: No start.
• If no air pressure signal: Lock-out when t10 has elapsed.
• If air pressure failure
• If burner does not ignite: Lock-out when safety time t2 has elapsed.
• Immediate lock-out.
• For ignition spark proving with QRE
closed and there is lock-out when t2 has elapsed.
Resetting the burner controls
The controls can be reset immediately after any fault condition. The programme re-
verts to its start position and programmes the controls for restarting the burners.
2(5)
A1 = LGB
GP
R/W
L N
br bl rt sw
sw rtQ1 = AGQ 1...
QRA
11112 2
172 425 16 08-01
3(5)
During the time the cause
of the fault is diagnosed,
the control outputs are
deactivated.
– The burner remains shut
down
–
signal «AL» at terminal 10
The burner is switched on
only after a reset is made.
– Press lockout reset but-
ton for 0.5...3 seconds
ELECTRIC EQUIPMENT
Control diagnosis under fault conditions and lockout indication
Gas burner control: LMG ...
Diagnosis of cause of fault
After lockout, the red fault LED is steady on. For reading the cause of fault, refer to
Error code table
Blink code Possible cause
2 x
••
•
– Fault or soiled detector electrode
– Fault or soiled fuel valves
– Poor adjustment of burner
3 x
•••
• Air pressure monitor does not close
– «LP» faulty
– «LP» incorrectly adjusted
– Fan motor does not run
4 x
••••
• Air pressure monitor does not open or extraneous light on
burner startup
– «LP» faulty
– «LP» incorrectly adjusted
5 x
•••••
• Extraneous light during pre-purging
– Or internal device fault
7 x
•••••••
•
– Poor adjustment of burner
– Faulty or soiled fuel valves
– Short-circuit between detector electrode and ground
8...17 x
••••••••
.................
••••••••••
•••••••
• Free
18 x
••••••••••
••••••••
• Air pressure monitor opens during pre-purging or operation
– «LP» correctly adjusted
–
19 x
••••••••••
•••••••••
• Faulty output contact
– Wiring error
– External power supply on output terminal
20 x
••••••••••
••••••••••
• Internal device fault
A1 = LMG
GP
R/W
L N
br bl rt sw
sw rtQ1 = AGQ 2...
QRA
11112 2
AL
FS
Red LED on
Fault
Press lockout reset button
for > 3 s Blink code Off Blink code
Approx.
3 s
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