Enertech Nu-Way MGN320 S1L 355 Technische Daten

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178 027 73

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

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

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

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

R/W

L N

br bl rt sw

sw rtQ1 = AGQ 2...

QRA

11112 2

Red LED on 

Fault

Press lockout reset button

for > 3 s Blink code Off Blink code

Approx.

3 s

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