Enertech BG950 User manual

178 001 85
Installation- and maintenance instruction
BG950

Contents
1. DESCRIPTION................................................................................................................. 4
1.1 Components ...........................................................................................................................................4
1.1 Components ...........................................................................................................................................5
1.2 Warning ..................................................................................................................................................6
1.2.1 Safety directions........................................................................................................................................... 6
1.2.2 Acceptance inspection.................................................................................................................................. 6
1.2.3 Preparations for installation.......................................................................................................................... 6
2. TECHNICAL DATA .......................................................................................................... 7
2.1 Type designation BG950 ........................................................................................................................ 7
2.2 Dimensions.............................................................................................................................................7
2.3 Out range ...............................................................................................................................................7
2.4 Capacity chart according to EN 676...................................................................................................... 7
2.7 Declaration of concordance/conformity .................................................................................................. 8
3. SKELETON DIAGRAMS ................................................................................................. 9
4. MOUNTING OF THE BURNER ..................................................................................... 10
5. ELECTRIC EQUIPMENT ............................................................................................... 11
5.1 Wiring diagram LFL 1... with Ionization electrode................................................................................. 11
5.2 List of components with Ionization electrode........................................................................................ 12
5.3 Function................................................................................................................................................12
5.4 Wiring diagram LFL 1... with UV-Detector ............................................................................................13
5.5 List of components with UV-Detector ................................................................................................... 14
5.6 Function................................................................................................................................................14
5.4 Wiring diagram LFL 1... with R316 ....................................................................................................... 15
5.5 List of components with R316 .............................................................................................................. 16
5.6 Function................................................................................................................................................16
5.7 Control programme under fault conditions and lockout indication LFL1.... .......................................... 17
5.8 Technical data LFL1... .......................................................................................................................... 17
6. MEASURES AND CHECKS BEFORE START-UP........................................................ 18
6.1 2-Stage or modulating burners............................................................................................................. 18
6.2 Inner assembly .....................................................................................................................................19
7. DETERMINATION OF GAS VOLUME FOR THE INSTALLATION ............................... 20
7.1 Example how to calculate the gas volume (natural gas) ......................................................................20
8. MULTI-BLOC ................................................................................................................ 21
8.1 View......................................................................................................................................................21
8.1.1 MB-VEF 412 - 425 B01 ............................................................................................................................. 21
8.1.2 MBC 1900 - 3100 VEF ............................................................................................................................... 22
8.2 Technical data ...................................................................................................................................... 23
8.3 Mounting instruction - impulse lines PL, PFand PBr ........................................................................................................................................23
8.4 Adjustment possibilities ........................................................................................................................ 23
9. Double Solenoid Valve Gas-air-ratio control Type MBC-...-VEF............................... 24
9.1 Nominal diameters DN 65 - DN 125..................................................................................................... 24
9.2 MBC-...-VEF .........................................................................................................................................25
9.3 Mounting...............................................................................................................................................26
9.4 Installation of pulse lines ...................................................................................................................... 26
9.5 Setting the pressure controller ............................................................................................................. 27
10. ADJUSTMENT OF GAS FLOW................................................................................... 28
10.1 Damper motor, air volume .................................................................................................................. 28
10.2 Releasing button ................................................................................................................................ 28

11. GENERAL INSTRUCTIONS ........................................................................................ 29
11.1 Adjustment of burner .......................................................................................................................... 29
11.2 Service................................................................................................................................................29
12. GENERAL INSTRUCTION .......................................................................................... 30
12.1 Flame monitoring and measurement of ionisation current ................................................................. 30
12.2 UV-detector ........................................................................................................................................ 30
12.3 Adjustment of air pressure switch....................................................................................................... 31
12.4 Adjustment of min. gas pressure switch ............................................................................................. 31
12.5 Adjustment of max. gas pressure switch ............................................................................................ 31
12.6 Gas pressure switch, air pressure switch...........................................................................................31
13. LEAKAGE CONTROL, DUNGS VPS 504 SERIES 2.................................................. 32
13.1 Technical data .................................................................................................................................... 32
13.2 Programme sequence ........................................................................................................................ 32
13.3 Program sequence schedule.............................................................................................................. 33
13.4 Electrical connection VPS 504 Series 02 ...........................................................................................33
14. HANDING OVER OF THE INSTALLATION ................................................................ 34
14.1 Handing over of the installation .......................................................................................................... 34
14.2 Fault location, functional troubles....................................................................................................... 34
15. FAULT LOCATION GUIDE .......................................................................................... 35
15.1 Gas burner .........................................................................................................................................35

15 23 1224
13
2625
41
2
29
7 9
6
8
5
1. DESCRIPTION
1.1 Components
1. Flame cone
4. Fan wheel
6. Shrouded disc
7. Ignition electrode
8. Nozzle
9. Ionisation electrode
12. Ignition transformer
13. Air damper
15. Air pressure switch
23. Contactor with thermal overload protection
24. Control box
25. Filter
26. MultiBloc
29. Ball valve

21
16
17
18
19
20
11
10
26 14
2
5
3
27
28
6
1.1 Components
2. Guide bar
3. Electric panel
5. Fan house
10. Motor
11. Connectiongasttings
14. Air damper motor
16 Fuse holder
17. Change-over switch increase-decrease
18. Change-over switch manually-automatically
19. Indicating lamp
20. Switch l-ll
21. Time meter (optional)
26. MultiBloc
27. Connectionange
28. Impulselinereroom
1. DESCRIPTION

Warning
!
7
1. DESCRIPTION
1.2 Warning
- Read the manual before assembling or commissioning.
- The contents of this manual are to be observed by all who work for
any reason on the unit and its appertaining system parts.
- This manual is intended especially for authorised personnel.
- This manual is to be regarded as part of the burner and shall always be
available near the place of installation.
- Theburnerisonlytobeinstalledbyqualiedpersonnel
- Check that the burner is suitable for the boiler´s power range.
- The burner is to be installed such that it complies with any local
regulations relating to electrical safety, boilers and fuel distribution.
- Check that the burner is approved for the gas quality intended
used.
- No burner safety systems are to be disengaged.
- Thetteristoensurethattheboilerroomissuppliedwithfreshair
 ventilationthatissufcientinaccordancewithlocalstandards.
- Before servicing, shut off the fuel supply and the power supply to
the burner.
- The outer temperature of the boiler´s components can exceed
60 °C.
- Check that the guide stop is installed before servicing.
- Take great care when servicing. Trap and pinch risks can be
present.
- The boiler´s sound level can exceed 85 dBA during operation. Use
ear protectors when present in the boiler room.
1.2.1 Safety directions
The electrical installation shall be made according to valid regulations
for heavy current and in a professional way, so that the risk of leaking
gas,reorpersonalinjuryisavoided.
If another electrical connection is used than the one recommended by
Enertech, there might be a risk of material damage or personal injury.
Notice should be carefully taken by the installer that no electrical cables
or gas pipes get squeezed or damaged when installing or at service
If the boiler is provided with an opening door, this should be interlocked
with a door switch.
1.2.2 Acceptance inspection
Ensure that everything is delivered and that there is no transport
damage. If there is anything wrong with the delivery, please report it to
the supplier. Any transport damage should be reported to the forwarding
company.
1.2.3 Preparations for installation
Ensure that the size and capacity range of the burner are suitable for
the boiler. Power data on the data plate refer to the minimum and maxi-
mum power of the burner.

32
28
24
20
16
12
8
4
0
-4
400 900 1400 1900 2400 2900 3400
kW
M12
(340)ø400-500
(ø260)ø290
A820
403
513
781
øB
øC
460
1000
403
8
2. TECHNICAL DATA
2.1 Type designation BG950
2.2 Dimensions
The above dimensions are max. measurements. Depending on the
components used, the measurements may vary.
2.3 Out range
Motor Ignition transformer
5,5 kW, 2800U/min Primary 230 V, 1 A
230/400 V, 50Hz Secondary 8 000 V
20/11,5A, 3 phase
2.4 Capacity chart according to EN 676
G20, G30, G31
G25
Length of burner
tube ± 5 mm
Flange Measure A
± 5 mm
Burner tube
Measure B
Burner tube
Measure C
Standard 350 310 280 260
Standard + 200 550 510 280 260
Standard + 300 650 610 280 260
BG950
Capacity Gas quality Caloricvalue
kWh/Nm3
Min
Nm3/h
Max
Nm3/h
Gas connection Gas pressure Min
mbar
500-3200 Natural gas G20 9,50 52,63 336,84 2½” 65
500-2800 Natural gas G25 8,23 60,75 340,21 3” 65
500-3200 Propane G31 24,41 20,48 131,09 2” 50
500-3200 Butane G30 32,13 15,56 99,59 2” 50

9
2. TECHNICAL DATA
2.7 Declaration of concordance/conformity
Manufacturer: Enertech AB, Bentone Division
Street address: Näsvägen
SE-341 34 Ljungby, Schweden
Postal address: Box 309
SE-341 26 Ljungby, Schweden
Product: Gas burner
Type: BFG1, BG100, BG150, BG200, STG120,
STG146, BG300, BG300LN, BG400, BG-
400LN, BG450, BG450LN, BG500, BG500LN,
BG550, BG550LN, BG600, BG600LN, BG650,
BG700, BG700LN, BG800, BG800LN and
BG950 all fan gas burner
ZertikatTÜVSüddeutschland
CerticatetN0 Burner
CE-0085 BT 0064 BFG1
CE-0085 AO 0230 BG100
CE-0085 AP 0623 BG150
CE-0085 AP 0624 BG200
CE-0085 AT 0192 STG120, STG146
CE-0085 AP 0625 BG300
CE-0085 AP 0626 BG400
CE-0085 AU 0156 BG450
CE-0085 BP 0352 BG550
CE-0085 BP 0353 BG550LN
CE-0085 AO 0084 BG600LN
CE-0085 BP 0354 BG650
CE-0085 AT 0313 BG700
CE-0085 AT 0314 BG800
CE-0085 BR 5754 BG950
Enertech AB declares under its sole responsibility that the above-
named products are in conformity with the following standard(s) or
othernormativedocument(s)andfulltheapplicableprovisionsof
the below-mentioned EC Directives.
Document: EN 676
DIN 4788
EU directive: 90 / 396 / EEC Gas directive
89 / 336 EEC EMC directive
73 / 23 / EEC Low voltage directive
Because the burner is deemed to conform to the above-mentioned
standards and directives, it holds the CE marking.
EnertechABBentoneDivisionisqualitycertiedaccordingto
SS-EN ISO 9001:2000.
Ljungby 070917
Sven-Olov Lövgren
...........................................................

Warning
!
1235a 5b
4
6b
6a
7
8910
10
3. SKELETON DIAGRAMS
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, 2 -stage
6b. Safety valve
1)7. Valve proving system
8. Air damper motor
9. Air pressure switch
10. Gas burner control
Pos. 5b, 7: Components not required according to EN 676.
1) Required over 1200 kW according to EN 676.
When Bio gas is used, Bentone shall always be contacted

11
4. MOUNTING OF THE BURNER
Tofacilitatethemountingoftheboilertheburnerheadwithgasange
and pull rods can be removed from the burner.
Do like this: Loosen the screw "A" on both sides and the two stop bolts at the end of
the pull rods. Remember that the electric cables to solenoid valve and
gas switch are also disconnected.
Whentheburnerheadandthegasangehavebeenttedtotheboiler
it is easy to lift the burner on to the pull rods.
If the gas assembly needs to be inspected the pull rods are very useful.
Loosen the screw "A" and pull out the burner on the pull rods. Loosen the
screws "B" and withdraw the gas assembly.
EnsurethattheO-ringbetweenthegasassemblyandthegasangewill
beinthecorrectpositionwhenthegasassemblyisttedagain.
Note! For maintenance of the brake plate, nozzles, electrodes etc, when using
a long design of the burner tube, you have to remove the nozzle
assembly from the connecting pipe and move the assembly back-
wards in the fan housing (from the boiler).

12
5. ELECTRIC EQUIPMENT
5.1 Wiring diagram LFL 1... with Ionization electrode
Damper position
Design without A3 Design without S10
3N ~ 50/60 Hz 400 V

13
5. ELECTRIC EQUIPMENT
5.2 List of components with Ionization electrode
A1 Gas burner control
A2 Power control
A3 Valve, leak tester,
Dungs VPS504
B1 Ionization electrode
F1 Operation fuse
F2 Operating fuse
F3 Operating fuse
H1 Operating lamp
H2 Lamp, high capacity
K1 Motor contactor with thermal
overload protector
K2 Auxiliary relay
M1 Burner motor
M2 Damper motor, L&S
SQN75.664.A21B
S1 Operating switch
S3 Control thermostat
S4 Temperature limiter
S5 Micro switch for hinged door
S7 Main switch
S8 Air pressure switch
S10 Gas pressure switch, max.
S11 Change-over switch, Aut.-man.
S12 Change-over switch,
Increase-Reduce
S15 Control thermostat, 3-pole
(only for 2-stage sliding)
S20 Main switch
T1 Ignition transformer
X1 Connection terminal board
X2 Earth terminal
X3 Plug-in contact, burner
X4 Plug-in contact, boiler
X7 Plug-in contact, 3 phase,
burner
X8 Plug-in contac}t, 3 phase,
boiler
X15 Plug-in contact, power
controller, burner
X16 Plug-in contact, power
controller
S9 Gas pressure switch
Y1 Gas solenoid valve 1
Y3 Safety solenoid valve
Mains connection and fuse in accordance with local regulations.
5.3 Function
1. Operating switch ON-Thermostat ON-Gas pressure switch ON-
Air damper closed.
A control is made that the air pressure switch does not indicate fan
pressure. Then the burner motor starts.
2. Air damper motor opens.
The air damper motor opens the damper to max. position. A control is
madethattheairpressureswitchindicatessufcientfanpressure.
3. Air damper motor closes.
The air damper motor closes to min. load position. Then the ignition
spark is formed.
4. Main and safety valves open.
Thegasisignited.Theionizationelectrodeindicatesaame.
5. The safety time expires.
The ignition spark goes out. The safety time expires. If there is no
ameorifforsomereasontheamedisappearsafterthistimelimit,
the burner control locks out.
6. Operating position.
The burner is in operating position and can now change over to the
capacity controlled by the regulator.
7. Stop.
The operation of the burner can now be interrupted by means of the
operating switch or the thermostat.
The control locks out.
The red lamp in the control is lit. Restart the burner by pressing the
reset button.

14
5. ELECTRIC EQUIPMENT
5.4 Wiring diagram LFL 1... with UV-Detector
Damper position
Design without A3 Design without S10
3N ~ 50/60 Hz 400 V

15
5. ELECTRIC EQUIPMENT
5.5 List of components with UV-Detector
A1 Gas burner control
A2 Power control
A3 Valve, leak tester,
Dungs VPS504
F1 Operation fuse
F2 Operating fuse
F3 Operating fuse
H1 Operating lamp
H2 Lamp, high capacity
K1 Motor contactor with thermal
overload protector
K2 Auxiliary relay
M1 Burner motor
M2 Damper motor, L&S
SQN75.664.A21B
R1 UV-Detector
S1 Operating switch
S3 Control thermostat
S4 Temperature limiter
S5 Micro switch for hinged door
S7 Main switch
S8 Air pressure switch
S10 Gas pressure switch, max.
S11 Change-over switch, Aut.-man.
S12 Change-over switch,
Increase-Reduce
S15 Control thermostat, 3-pole
(only for 2-stage sliding)
S20 Main switch
T1 Ignition transformer
X1 Connection terminal board
X2 Earth terminal
X3 Plug-in contact, burner
X4 Plug-in contact, boiler
X7 Plug-in contact, 3 phase,
burner
X8 Plug-in contac}t, 3 phase,
boiler
X15 Plug-in contact, power
controller, burner
X16 Plug-in contact, power
controller
S9 Gas pressure switch
Y1 Gas solenoid valve 1
Y3 Safety solenoid valve
5.6 Function
1. Operating switch ON-Thermostat ON-Gas pressure switch ON-
Air damper closed.
A control is made that the air pressure switch does not indicate fan
pressure. Then the burner motor starts.
2. Air damper motor opens.
The air damper motor opens the damper to max. position. A control is
madethattheairpressureswitchindicatessufcientfanpressure.
3. Air damper motor closes.
The air damper motor closes to min. load position. Then the ignition
spark is formed.
4. Main and safety valves open.
Thegasisignited.Theionizationelectrodeindicatesaame.
5. The safety time expires.
The ignition spark goes out. The safety time expires. If there is no
ameorifforsomereasontheamedisappearsafterthistimelimit,
the burner control locks out.
6. Operating position.
The burner is in operating position and can now change over to the
capacity controlled by the regulator.
7. Stop.
The operation of the burner can now be interrupted by means of the
operating switch or the thermostat.
The control locks out.
The red lamp in the control is lit. Restart the burner by pressing the
reset button.
Mains connection and fuse in accordance with local regulations.

16
5. ELECTRIC EQUIPMENT
5.4 Wiring diagram LFL 1... with R316
Damper position
Design without A3 Design without S10

17
5. ELECTRIC EQUIPMENT
5.5 List of components with R316
5.6 Function
1. Operating switch ON-Thermostat ON-Gas pressure switch ON-
Air damper closed.
A control is made that the air pressure switch does not indicate fan
pressure. Then the burner motor starts.
2. Air damper motor opens.
The air damper motor opens the damper to max. position. A control is
madethattheairpressureswitchindicatessufcientfanpressure.
3. Air damper motor closes.
The air damper motor closes to min. load position. Then the ignition
spark is formed.
4. Main and safety valves open.
Thegasisignited.Theionizationelectrodeindicatesaame.
5. The safety time expires.
The ignition spark goes out. The safety time expires. If there is no
ameorifforsomereasontheamedisappearsafterthistimelimit,
the burner control locks out.
6. Operating position.
The burner is in operating position and can now change over to the
capacity controlled by the regulator.
7. Stop.
The operation of the burner can now be interrupted by means of the
operating switch or the thermostat.
The control locks out.
The red lamp in the control is lit. Restart the burner by pressing the
reset button.
Mains connection and fuse in accordance with local regulations.
A1 Gas burner control
A3 Valve, leak tester,
Dungs VPS504
A6 Power control R316
A6(2) PT 100-sensor,
Thermocouple, current/voltage
B1 Ionization electrode
F1 Operation fuse
F2 Operating fuse
F3 Operating fuse
F4 Operating fuse 1A
H1 Operating lamp
H2 Lamp, high capacity
K1 Motor contactor with thermal
overload protector
K2 Auxiliary relay
M1 Burner motor
M2 Damper motor,
L&S SQN75.664.A21B
S1 Operating switch
S3 Control thermostat
S4 Temperature limiter
S5 Micro switch for hinged door
S7 Main switch
S8 Air pressure switch
S10 Gas pressure switch, max.
S11 Change-over switch, Aut.-man.
S12 Change-over switch,
Increase-Reduce
S20 Main switch
T1 Ignition transformer
X1 Connection terminal board
X2 Earth terminal
X3 Plug-in contact, burner
X4 Plug-in contact, boiler
X7 Plug-in contact, 3 phase,
burner
X8 Plug-in contact, 3 phase,
boiler
X9 Plug-in contact, power
controller R316 burner
X10 Plug-in contact, power
controller R316
S9 Gas pressure switch
Y1 Gas solenoid valve 1
Y3 Safety solenoid valve

a
b´
b
18
5. ELECTRIC EQUIPMENT
5.7 Control programme under fault conditions and lockout indication LFL1....
In the event of fault conditions the fuel supply is always interrupted
immediately and, simultaneously, the sequence switch stops and
thus the lockout indicator. The symbol appearing above the reading
mark indicates the kind of fault:
No start,
because, e.g., the CLOSE signal has not been supplied to terminal
8 or a contact has not been closed between terminals 12 and 4 or 4
and 5.
Interruption of the start-up sequence,
because the OPEN signal has not been supplied to terminal 8 from
damper motor to switch «max.». Terminals 6, 7and 14 are under
tension until the fault has been remedied.
Lockout,
because the air pressure signal has not been received at the start
of the air pressure check. Any air pressure failure after this point
in time also causes the control to go to lockout!
Lockout
duetoafaultintheamesupervisioncircuit.
Interruption of the start-up sequence,
 becausethepositionsignalforthelow-amepositionhasnotbeen
supplied to terminal 8 by the damper motor. Terminals 6, 7 and 14
are under tension until the fault has been remedied.
Lockout
 becausenoamesignalhasbeenreceivedoncompletionofthe
1st safety time. Any ame signal failure after completion of the
rst safety time also causes the control to go to lockout!
Lockout,
 becausenoamesignalhasbeenreceivedoncompletionofthe
 2ndsafetytime(amesignalofthemainamewithinterruptedpilot
burners).
Lockout,
 becausetheamesignalhasbeenlostduringburneroperationor
air pressure failure has occured.
Lockout on completion of control programme sequence
duetoextraneouslight(e.g.amenotextinguished,leakingfuel
 valves)orduetoafaultyamesignal.
1
P
2
◄
▲
▼
◄
a - b Start-up sequence
b - b´ ”idle steps” up to the self
shut-down of the sequence switch
b ( b´) - a Post-purge sequence
5.8 Technical data LFL1...
Pre-purge time with full air volume: 31,5 s
Pre-iginition time: 6 s
Safety time: 3 s
Post-ignition time: 3 s
Reset after lock-out Immediately
Time of re-start: 18 s
Ambient temperature: -20°C to +60°C
Protective standard: IP 40
Supervision of ionization current Voltage at the detector electrode operation: 330V ± 10%
test: 380V ± 10%
Short circuit current max. 0,5 mA
Min. required ionization current 6 µ A
Recommended range of measuring device 0...50 µ A

19
6. MEASURES AND CHECKS BEFORE START-UP
MultiblocGas train
6.1 2-Stage or modulating burners
Ensure that the ignition and ionisation electrodes are correctly ajusted.
The sketch (see separate page) shows the correct measurements.
Gas quality Ensure that the burner head is meant for the gas quality to be used
(seeg.).
Venting The gas line is vented by loosening the screw on the test nipple for the
inlet pressure. Connect a plastic hose and conduct the gas into the
open air.
After having vented the gas line tighten the screw again.
Electric function test: Ensure that phase and neutral are not reversed. The gas shut-off cock
should be closed.To prevent the gas pressure switch from locking out,
it should be linked temporarily.
After the main switch has been switched on and the thermostats have
been adjusted, the pre-purging period begins (30-35sec.). At the end of
this period the pre-ignition period starts (0,5-2,5 sec. depending on the
design of the gas control). The gas valve is energized and opens and
ameisestablished.Attheendofthesafetytime(2-3sec.)thegas
control locks out. The solenoid valve and the motor will be ”dead”. Re-
movethelinkfromthegaspressureswitchafterthetestisnished.
Note on 2-stage and modulating burners that during the pre-purging
period the damper opens to the set value for air on stage 2 and just be-
fore the end of the pre-purging period it goes down to the air setting for
stage 1. On some burners under 350kW the pre-purging mainly takes
place with the air damper set for stage 1.
NOTE! Applies only to gas burner control LFL1.
When using LPG (Propane) the burner should be connected for post-
purging. Move the connection on terminal 6 to terminal 7 in the base of
LFL1.
Leakage control When making a leakage control of the gas supply system, the solenoid
valve should be closed. Connect a pressure gauge to the test nipple
Pa,seeg.Thetestpressureinthesystemshouldbe1,5xmax.inlet
pressure or min. 150 mbar. If any leakage, locate the source by means
of soapy water or a leak location spray. After tightening repeat the test.
Inner assembly

3-4
45°
20
6. MEASURES AND CHECKS BEFORE START-UP
6.2 Inner assembly
Natural gas, LPG
Distance ionisation electrode - shrouded disc.

2200 · 3 600 ≈
34200 144 · 0,90
V=
Q · 3 600 =
Hu·η 257,3 Nm3/h
V=
2200 ≈
9,50 · 0,90 257,3 Nm3/h
273 + t
273 ·1013,25 B + Pu
273 + 15
273 ·1013,25 945 + 15
21
V = Gas volume Nm3/h
Q = Boiler output 2200 kW
Hu = CaloricvalueofthegasA.34,20MJ/Nm3, B. 9,50 kWh/ Nm3
η = Expectedefciency90%
Ex. A
Ex. B
If the barometer height, pressure and temperature of the gas deviate
considerably from the normal values this must be taken into account as
follows:
f =
t = Temperature of the gas at the gas meter (15°C)
B = Barometer height (945 mbar)
Pu= Pressure of the gas at the gas meter (15,0 mbar)
f =
f ≈1.11
7. DETERMINATION OF GAS VOLUME FOR THE INSTALLATION
Specicationsonnaturalgas,towngasandbiogasvary.Formore
exact information please contact the gas distributor.
NetcaloricvalueHu15°C/1013,25 mbar
Gas quality kWh/Nm3MJ/Nm3
Natural gas G20 9,50 34,20
Natural gas G25 8,23 29,63
Propane G31 24,41 87,88
Butane G30 32,13 115,67
Biogas 6,00 21,60
7.1 Example how to calculate the gas volume (natural gas)
The gas volume read on the gas meter actually reads
1,11 .257,3 = 285,6 m3/h.