info

Information on Duoblock burners

WK-series industrial burners

Industrial burners WK40 to WK80 • 300 kW to 32,000 kW
The powerful industrial burner
with a modular construction
Air preheater Combustion-air
Parallel operation fan

Min. 5 mm Max. 50 cm Fabric compensators

sheet steel between are essential
stabilisers

Air
deflector
Burner

Combustion-air ducting Combustion air temperatures up to 250 °C

Weishaupt WK-series burners have heat exchanger in the flue can be used Fuels
been designed especially for to reclaim a large amount of energy • Fuel oil EL (< 6 mm2/s at 20 °C)
industrial use. The modular design from these hot flue gases, increasing in accordance with DIN 51 603-1
of the burners, coupled with their efficiency by up to 10 %. Weishaupt • Fuel oil S (< 60 mm2/s at 100 °C)
large capacity range, makes them WK-series industrial burners can be (< 700 mm2/s at 50 °C)
ideally suited to a broad spectrum operated with preheated combustion- in accordance with DIN 51 603-3/-5
of special applications. air temperatures of up to 250 °C. • Natural gas E/LL
• LPG B/P
Modular principle Nozzle-head shut-off device
Weishaupt WK-series industrial burners At burner shutdown, or when changing Permissible installation conditions
are of modular design. That means the over to gas operation, a safety shut-off • Ambient temperature during
fan, pump station, and preheater station device located in the oil atomising operation: -15 to +40 °C
are all selected independently of the system shuts off the oil flow directly in • Humidity: max. 80 % relative humidty,
burner. This concept offers a high the nozzle orifice, preventing the no condensation
degree of flexibility in matching to the escape of any oil. • Standard burner protection: IP 54
most diverse applications. • Suitable for horizontal or vertical
Modulating operation installation
Digital combustion management Within its operating range, the burner’s
Digital combustion management output is matched to the current heat Standards conformity
ensures the simple and safe operation demand. • EN 267 and EN 676
of combustion plant. Emissions are • Pressure Equipment Directive,
minimised and economy is maximised. Reduced capacity at start-up 97/23/EC
The burners start at gas operation at a • Gas Appliance Directive,
Insulated burner housing reduced ignition load (WK (G) MS 2009/142/EC
The burner housing is fitted with internal > 17.5 MW with an additional pilot bur- • Machinery Directive, 2006/42/EC
insulation (optional extra on the ambient- ner). This means that only a small quan- • Electromagnetic Compatibility
air versions of the WK 40 and 50). This tity of gas flows into the combustion Directive, 2004/108/EC
significantly reduces the surface chamber. After the ignition phase, the • Low Voltage Directive, 2006/95/EC
temperature of the housing during burner drives to partial load. • The burners are marked with a
operation with preheated combustion - CE mark
air. The insulation also provides effective Controlled shutdown from partial - CE Product ID No.
noise reduction. load - Type-test No.
Controlled shutdown of the burner
Heat recovery using preheated always takes place from the partial-load
combustion air position, thus preventing impact on the
Many industrial processes create high gas main.
flue-gas temperatures due to the high
temperature of the medium used. A

2
 Gas valve train and accessories

Oil-supply accessories

Combustion-air fans with/without VSD

Lateral sound absorber (standard)

Full encapsulation (optional)

A one-stop solution for reliability

3
Digital combustion management:
Precise, simple, and reliable
Measures for saving energy and
O2 trim saves fuel through a continual
increasing safety and reliability
and extremely efficient optimisation of
the combustion air. Different O2 probes
Electronic compound regulation with
are available, providing suitable solutions
the W-FM 100 and 200 combustion
for almost all fuels in applications with
managers facilitates the extremely
flue-gas temperatures below 300 °C.
precise, hysteresis-free setting of the
burner. The burner can be adjusted for
Combined CO/O2 control ensures an
ideal combustion figures throughout its
ultimate degree of safety. CO emissions
entire capacity range. This reduces flue
are continually monitored and, if the
gas losses and saves fuel.
defined limit is exceeded, the burner is
operated with an increased amount of
Variable speed drive reduces electrical
excess air for a short period of time
consumption and facilitates a soft start
before the O2 trim returns the burner to
of the combustion air fan. The use of
its preset O2 setpoint. Should external
VSD also reduces noise emissions by a
influences prevent a non-critical
considerable amount.
Setting via the control and display unit condition from being reached, then the
burner will undergo a controlled shut-
down.
Digital combustion management
means optimal combustion figures,
Digital combustion management overview W-FM 100 W-FM 200
continuously reproducible setpoints,
and ease of use. Continuous operation > 24 h l l
Capacity control for temperature or pressure Optional l
Weishaupt WK-series burners are O2 trim with QGO20/21 O2 probe l
equipped as standard with electronic Combined CO/O2 control Optional
compound regulation and digital VSD l
combustion management. Modern Flue gas recirculation (temperature compensated) l
combustion technologies demand a WK(G)MS 80 with gas ignition l
precise and continually reproducible WKMS 80 with light-oil ignition l l
dosing of fuel and combustion air.
SQM40/48/9... servomotors in electronic compound (max.) x4 x6
W-FC 4.0 flame monitoring l l
Simple operation
W-FC 5.0/6.0 flame monitoring l
Setting and control of the burner is
achieved using a control and display Parallel burner firing
Optional l
(in conjunction with KS... controller)
unit. This is linked to the combustion
Two gaseous fuels
manager via a bus system, enabling the l
(also in combination with a liquid fuel)
user-friendly setting of the burner. The
Two liquid fuels
control and display unit has a clear text lx2 lx2
with different calorific values
display with a choice of languages. An Integral valve proving (with gaseous fuels) l l
English/Chinese dual-screen version is Burner-mounted W-FM l l
available as an option should a Chinese- for combustion-air temperatures up to 40 °C
character display be desired. W-FM supplied loose (for panel mounting) Optional Optional
for combustion-air temperatures up to 40 °C
Flexible communication options Burner-mounted ABE l 1) l 1)
The integrated interface enables all for combustion-air temperatures up to 40 °C
necessary data and functions to be ABE supplied loose (for panel mounting) Optional Optional
for combustion-air temperatures up to 40 °C
relayed to a master control system via,
W-FM and ABE supplied loose (for panel mounting) l l
for example, eBUS, Modbus RTU, for combustion-air temperatures from 40 to 250 °C
Modbus TCP/IP, or Profibus-DP. Setpoint input (0)4-20 mA / 0-10 V Optional l
Configurable analogue output X63 (rating / drive position / l
flame signal / medium temperature or pressure)
eBUS / Modbus RTU l l

1)
Not available with dual-screen Roman and Chinese-script version

4
 (max. 10 m)
• CO probe

(max. 10 m)
• O2 probe (QGO20)
oder
• O2 diffusion probe
(QGO21 for
heavy oil)
Burner with inbuilt digital
combustion manager
0-10 V
T P 4-20 mA

Setpoint input

O2 module CO module

Gas feed

Burner-mounted / panel-mounted
Oil feed control and display unit
Frequency convertor for
variable speed drive

Air feed

Regulating sleeve
(air)
CAN bus (max. 100 m)

PC / touchscreen
visualisation
Modbus

System networking
via PLC / DDC

W-FM COM Telecontrol via

W-FM 200 communications fixed/mobile phone
combustion manager module network or internet

5
Limitless communications:
flexible, reliable and simple

Burner Control Panel

PC / touchscreen
visualisation

W-FM50/54/100/200 ABE control and Optional dual-script display

combustion manager display unit for W-FM 100/200

CAN bus

Optional Modbus RTU

Other burners

System networking via PLC / DDC

Programming
cable Various bus systems, e.g. Modbus TCP/IP, Profilbus-DP

• Commissioning support Gateway

• Fault analysis
• Data storage W-FM COM communications module
Modbus RTU

Other burners

Camera LAN / W-LAN Digital / analogue

inputs and outputs

GSM aerial (optional)

6
 BMS Worldwide

SCADA Laptop /
Supervisory Control tablet
and Data Aquisition

Email
SMS

Smartphone

Various bus systems

Various bus systems

• Monitoring and
alarms

LAN / W-LAN • Read process and meter

values

• Adjust setpoints

• Read fault and lockout history

GSM / web server

• Controllable digital inputs and
outputs

7
Emissions reduced
by the multiflam® principle
Weishaupt’s multiflam® technology
was designed for gas and dual-fuel
burners. By using a patented 3LN
mixing head, NOx emissions on WK-
series burners can be reduced to
extremely low levels.

Weishaupt has set an all-new bench-

mark, achieving levels below 80 mg/m3
on gas and 120 mg/m3 on oil, subject
to the combustion chamber geometry.

Weishaupt’s multiflam® burners meet

the world’s toughest standards. In those
countries with particularly stringent
environmental legislation, such as
Switzerland, multiflam® industrial
Typical flame formation
burners are market-sector leaders.

At the heart of Weishaupt’s multiflam®

mg/m3 mg/m3
technology is a special mixing-assembly
design which distributes the fuel among
200 200
primary and secondary nozzles. This TA Luft (Germany)
results in extremely efficient combustion 190 190 1. BImschV (Germany)
thanks to recirculation of the flue gases 10 to 20 MW
180 180
directly at the mixing assembly.
170 170

160 160

150 150

140 140

130 130
LRV (Switzerland)
120 120
TA Luft (Germany)
110 1. BImschV (Germany) 110
10 to 20 MW
100 100
NOx

90 90
LRV (Switzerland)
80 80

70 70

60 60
NOx

50 50

40 40

30 30

20 20
CO

CO

10 10

Gas Oil

Typical emission levels for hot-water plant

8
Flame monitoring
for demanding safety requirements
burners firing from different directions
into a single combustion chamber, and
for process plant with various flame W-FC 4.0
sources. The W-FC assembly monitors
each flame separately via a load-
dependent switching threshold for each
fuel. This guarantees a distinct
differentiation from extraneous sources.
The CFC3... flame sensor functions in
parallel with the QRA73 flame sensor on
the W-FM 200 combustion manager. This
convenient, load-dependent setting of For classical parallel firing into a combustion
the on and off thresholds rests upon the chamber, with a maximum turndown of 4:1
electronic VLoad module, which can be
configured using software. W-FC 5.0

W-FC 6.0 is to monitor flame stability

Testing and optimisation using a software tool
on plant with flue-gas recirculation for
extreme NOx requirements. With this
Weishaupt Flame Control (W-FC) is a version, the QRA73 flame sensor monitors
reliable flame monitoring system the flame while the CFC3... controls the
designed for demanding safety flue gas volume based on the stability of
requirements. the flame to ensure safe operating
conditions. In this way, reliability of opera- For firing into a combustion chamber from
W-FC 4.0 is for plant with multiple tion with optimal emissions is achieved opposing directions, and individual/staged firing
of multiple burners
burners firing from the same direction under varying conditions. The VLoad
into a single combustion chamber. The module enables a load-dependent swit-
W-FC assembly utilises flame frequency ching threshold to be tailored to the ope- W-FC 5.0
to monitor each flame separately via a rational situation.
load-independent on and off threshold
for each fuel. The CFC3... flame sensor All versions meet EN 298 continuous
functions in series with the QRA73 flame operation requirements.
sensor on the W-FM 100/200 combus-
tion manager.

Note: If a turndown in excess of >1:4 or

single-burner operation is required, the For plant with various flame sources, such as
higher specification W-FC 5.0 must be waste and biomass incineration, process plant,
selected. etc.

W-FC 5.0 is for plant with multiple W-FC 6.0

CFC3... flame sensor Flame root Combustion zone CFC3..

M
M
FU

M
M
M M

Amplitude W-FM 200 VLoad

VLoad

For plant with extreme NOx requirements, e.g.

Frequency hot air, thermal fluid, etc
The constructive alignment of the CFC3... allows the detection range to be optimised

9
Ignition variants for every fuel and rating
Variant A Variant B Variant C
Standard ignition for liquid fuels Standard ignition for gaseous fuels Ignition option for liquid fuels on
on WKL/WKMS40-70 and WKL80. on WKG(L/MS)40-70 and WKG(L)80.3) WKMS40-70.
Liquid fuels are ignited directly by the The pilot line feeds a controlled amount The pilot line feeds a controlled amount
high-voltage ignition electrodes. of gas to the ignition electrodes for of LPG to the ignition electrodes for
ignition. The main gas line is released ignition. This pilot flame ignites the
and ignited after a short delay. main liquid fuel upon release.

Ignition electrodes Ignition electrodes Ignition electrodes

Oil nozzle Ignition pilot Oil nozzle Ignition pilot Oil nozzle

Ignition variant A Ignition variant B with ignition pilot Ignition variant C with ignition pilot

A B C
V1 V2
LPG
Main gas line

Gas valve train with ignition variant B Gas valve train with ignition variant C

Weishaupt offers various ignition

Variant G
variants in order to ensure
Optional light-oil ignition burner Ignition electrodes are used to ignite
maximum reliability of ignition
for liquid fuels on WKMS80. the oil injected by the pilot burner. The
A reliable solution for the ignition of pilot burner is then used to ignite the
high-viscosity liquid fuels when gas is main flame upon fuel release.
not available or not permitted.

G
Light-oil ignition burner
P

Oil nozzle Ignition variant G with light-oil ignition burner

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Variants D to F
Optimal ignition for high-viscosity Flame monitoring is via a separate
liquid fuels on WK(G)MS80, using a ionisation probe, which necessitates the
high-quality ignition burner use of a W-FM 200 combustion
This variant facilitates reliable ignition manager.
at a considerably reduced rating. Ignition electrode
This reliable solution was developed
An ignition electrode is used to ignite especially for heavy and special fuel
Ionisation electrode
the pilot burner’s gas mixture. The oils with widely varying characteristics.
pilot burner is then used to ignite the It is also suitable for extreme ignitions, Front view:
main flame upon fuel release. such as cold-starting plant that utilises Ignition electrode
pre-heated combustion air.
A typical LPG bottle (11/33 kg) is
adequate for ensuring reliable ignition.
For example, an 11 kg LPG bottle is
sufficient for well over 300 ignitions. Ignition variants D to F with ignition burner

D P P
W-MF
E P P
W-MF
F W-MF

LPG Gas LPG

V1 V2 V1 V2
Main gas line Main gas line

Gas valve train with ignition variant D Gas valve train with ignition variant E Gas valve train with ignition variant F

WK…40–70 WK…80
WKL WKG 3) / WKGL WKL WKMS WKMS WKG WKGMS WKGMS
WKMS WKGMS < 17,5 MW WKGL < 17,5 MW

A l l l 2)

B l l l 2)

C l (WKMS)

D l 1) l 1)

E l 1) l 1)

F l 1)
l 1)

G l l

Accessories for variants C to E 1 Complete set (Part No. 271 805 2601 2) comprising:
2 1 Pressure regulator for 11/33 kg LPG bottle
3
2 Hose-rupture protection
3 3 m hose

l Standard l Optional 1)
W-FM 200 combustion manager required 2)
1SF version excluded 3)
WKG 40-70 ZM(H)-LN burners ignite from main gas line - no pilot

11
The right mixing assembly for every application
Burner NOx Class 1)

regulation in the M.A.3)

Mixing assembly type Flame geometry Fuels

Load-dependent air
type EN 676 EN 267

Maintenance-friendly construction: On all burner versions, the

Length Diameter

Oil (light oil)

Natural gas

Natural gas
standard-length combustion head (i.e. the flame tube and mixing

Heavy oil
assembly) can be inserted and withdrawn through the service

Light oil
opening in the burner housing. To further assist removal, the

LPG

LPG
mixing assemblies on WK80 burners are guided by rail.

ZM(H)
Mixing assembly for gas, oil,
WK 40-50  ○ ○ ○ ○ – – –
and dual-fuel burners. WK 70/1  ● ○ ● ○ 1 – 1
For plant with no particular WK 80/3  – – ● ○ – – 1
NOX requirements.

ZM(H)-NR
Gas-side NOX reduction WK 50  ○ ○ ○ ○ – – –
compared to ZM version. WK 70/1  ● ● ● ○ 2 3 2
WK 70/3  ● ● ● ○ 3 3 1
WK 80/3  ● ● ● ○ 3 3 1

ZM(H)-1LN
Low-NOX mixing assembly for
gas and dual-fuel burners. WK 50 – ○ ○ ○ – – – –
WK 70 – ● ● ● – 3 3 2
For plant with gas and oil-side
NOX requirements.

ZM(H)-LN
Low-NOX mixing assembly for
gas burners. WK 40 – ○ ○ – – – – –
WK 70 – ● ○ – – 3 – –
Further reduction in NOX
emissions compared to 1LN-
version burners.

(ZMH)-3LN
Low-NOX mixing assembly for
gas, oil, and dual-fuel burners.
WK 40-50  ○ ○ ○ – – – –
For plant with extremely low WK 70  ● ● ● – 3 3 3
NOX limits. Lowest NOX WK 80  ● – ● – 3 3 3
emissions in comparison with
all other versions.

1)
Combustion-air temperatures < 40 °C
2)
Minimum requirements for the combustion-chamber geometry must be agreed with Weishaupt’s headquarters
3)
Mixing assembly

12
 Burner NOx Class 1)

regulation in the M.A.3)

Mixing assembly type Flame geometry Fuels

Load-dependent air
type EN 676 EN 267

Length Diameter

Natural gas

Natural gas

Oil (light oil)

Heavy oil
Light oil
LPG

LPG
ZM(H)-1SF
Mixing assembly for gas, oil,
and dual-fuel burners.
WK 40-
 ○ ○ ○ ○ – – –
80/3
Mixing assembly for extremely
short combustion chambers in
water-tube boilers.

ZM(H) - VSF
Mixing assembly for gas
burners, type WKG80/4 to
80/6.

Mixing assembly for extremely

short combustion chambers WK 80/4  ● ● – – 3 3 –
(WKG80/4 and 80/5) and for
elongated, D-type combustion
WK 80/5  ● – – – 2 – –
chambers in water-tube boilers WK 80/6  ○ – – – – – –
with low cross-sectional loads
(WKG80/4 to WKG80/6). The
flame geometry of the
WKG80/4 and 80/5 can be
optimised by internal fittings
(circular blanks). 2)

● Type tested / CSEI certified ○ CSEI certified

EN emission classes
Fuel Natural Gas (EN 676) LPG (EN 676) Light Oil (EN 267)

Emission Class 1 2 3 1 2 3 1 2 3

NOx emissions in
≤ 170 ≤ 120 ≤ 80 ≤ 230 ≤ 180 ≤ 140 ≤ 250 ≤ 185 ≤ 120
mg/kWh

Maximum turndown
Burner Version Natural Gas/LPG Light Oil HFO

WK 40 / WK 50 ZM... 4:1 3:1 3:1

ZM(H) / ZM(H)-NR / ZM(H)-1LN /

WK 70 / WK 80 8:1 5:1 3.5 : 1
ZM(H)-LN / ZM(H)-3LN / ZM(H)-VSF

WK 70 / WK 80 ZM(H)-1SF 8:1 4:1 3:1

Basic conditions:
Without excess air limitations. Combustion values not guaranteed throught the entire turndown range. All operational points must lie within the burner’s capacity chart.
Higher turndowns may be achievable in certain cases (subject to agreement with Weishaupt’s headquarters).

13
Overview of capacities
Gas burners
Version ZM
WKG natural-gas and LPG burners
Burner type Version Fuel Rating kW 0 5.000 10.000 15.000 20.000 25.000 30.000
2.500 7.500 12.500 17.500 22.500 27.500
ZMH / ZM

WK 40/1-A ZM(H) Nat. gas 300 – 1800 / 2200 min. full load (kW) ZM/ZMH
LPG 300 – 1800 / 2200 1000 / 1000

WK 40/2-A ZM(H) Nat. gas 400 – 2500 / 3000

LPG 400 – 2500 / 3000

WK 50/1-B ZM(H) Nat. gas 600 – 3200 / 4000

LPG 600 – 3200 / 4000

WK 50/2-A ZM(H) Nat. gas 800 – 5000 / 6000

LPG 800 – 5000 / 6000

WK 70/1-B ZM(H) Nat. gas 900 – 6100 / 7700

Version NR
WKG natural-gas and LPG burners
Burner type Version Fuel Rating kW 0 5.000 10.000 15.000 20.000 25.000 30.000
2.500 7.500 12.500 17.500 22.500 27.500
ZMH / ZM

WK 50/1-B ZM(H)-NR Nat. gas 600 – 3200 / 4000 min. full load (kW) ZM/ZMH
LPG 600 – 3200 / 4000 2000 / 2000

WK 50/2-A ZM(H)-NR Nat. gas 800 – 5000 / 6000

LPG 800 – 5000 / 6000

WK 70/1-B ZM(H)-NR Nat. gas 1100 – 6100 / 7700

LPG 1100 – 6100 / 7700

WK 70/3-A ZM(H)-NR Nat. gas 1400 – 9600 / 12000

LPG 2000 – 9600 / 12000

WK 80/3-A ZM(H)-NR Nat. gas 2200 –17600 / 22000

LPG 3200 –17600 / 22000

Version 1LN
WKG natural-gas and LPG burners
Burner type Version Fuel Rating kW 0 5.000 10.000 15.000 20.000 25.000 30.000
2.500 7.500 12.500 17.500 22.500 27.500
ZMH / ZM

WK 50/1-B ZM(H)-1LN Nat. gas 600 – 3000 / 3600 min. full load (kW) ZM/ZMH
LPG 600 – 3000 / 3600 2000 / 2000

WK 50/2-A ZM(H)-1LN Nat. gas 800 – 4800 / 5500

LPG 950 – 4800 / 5500

WK 70/1-B ZM(H)-1LN Nat. gas 900 – 5600 / 7000

LPG 1000 – 5600 / 7000

WK 70/2-A ZM(H)-1LN Nat. gas 1100 – 9600 / 12000

LPG 1400 – 9600 / 12000

Burner-selection criterion:
The minimum full-load rating within a burner’s capacity range corresponds to the maximum rating of the next smallest size of the same version burner.

14
Version LN
WKG natural-gas burners
Burner type Version Fuel Rating kW 0 5.000 10.000 15.000 20.000 25.000 30.000
2.500 7.500 12.500 17.500 22.500 27.500
ZMH / ZM

WK 40/2-A ZM(H)-LN Nat. gas 500 – 2500 / 3000 min. full load (kW) ZM 1800 / ZMH 1800

WK 70/1-B ZM(H)-LN Nat. gas 1200 – 5600 / 7000

WK 70/2-A ZM(H)-LN Nat. gas 1750 – 8800 / 11000

Version 3LN multiflam®

WKG natural-gas burners
Burner type Version Fuel Rating kW 0 5.000 10.000 15.000 20.000 25.000 30.000
2.500 7.500 12.500 17.500 22.500 27.500
ZMH / ZM

WK 70/1-B (ZMH)-3LN Nat. gas 1000 – 9400 / 10000 min. full load (kW) ZM/ZMH
LPG 1550 – 9400 / 10000 5000 / 5000

WK 70/3-A (ZMH)-3LN Nat. gas 1100 –12200 / 13000

LPG 1750 –12200 / 13000

WK 80/1-A (ZMH)-3LN Nat. gas 1800 –16000 / 17000

LPG 2000 –16000 / 17000

Version ZM 1SF
WKG natural-gas and LPG burners
Burner type Version Fuel Rating kW 0 5.000 10.000 15.000 20.000 25.000 30.000
2.500 7.500 12.500 17.500 22.500 27.500
ZMH / ZM

WK 50/2-A ZM(H)-1SF Nat. gas 800 – 4800 / 6000 min. full load (kW) ZM 4000 / ZMH 3200

WK 70/1-B ZM(H)-1SF Nat. gas 1000 – 6400 / 8000

WK 70/2-A ZM(H)-1SF Nat. gas 1300 – 9600 / 12000

Version ZM VSF
WKG natural-gas and LPG burners
Burner type Version Fuel Rating kW 0 5.000 10.000 15.000 20.000 25.000 30.000
2.500 7.500 12.500 17.500 22.500 27.500 32.500
ZMH / ZM

WK 80/4 ZM(H)-VSF Nat. gas 2200 – 17600 / 22000 min. full load (kW) ZM/ZMH
LPG 3200 – 17600 / 22000 12000 / 9600

WK 80/5 ZM(H)-VSF Nat. gas 2700 – 21600 / 27000

WK 80/6 ZM(H)-VSF Nat. gas 3200 – 25600 / 32000

Version ZM: Combustion-air temperatures up to 40 °C See the planning and installation handbook for fan selection and arrangement,
Version ZMH: Combustion-air temperatures up to 100 °C gas valve trains, special equipment, technical data, and dimensions.
Version ZMH: Combustion-air temperatures up to 250 °C

15
Overview of capacities
Oil burners
Version ZM
WKL and WKMS light and heavy-oil burners
Burner type Version Fuel Rating kW 0 5.000 10.000 15.000 20.000 25.000 30.000
2.500 7.500 12.500 17.500 22.500 27.500
ZMH / ZM

WK 40/1-A ZM(H) Light oil 450 – 1800 / 2200 min. full load (kW) ZM/ZMH
Heavy oil 550 – 1800 / 2200 1200 / 1200

WK 40/2-A ZM(H) Light oil 650 – 2500 / 3000

Heavy oil 750 – 2500 / 3000

WK 50/1-B ZM(H) Light oil 712 – 3200 / 4000

Heavy oil 1012 – 3200 / 4000

WK 50/2-A ZM(H) Light oil 1125 – 5000 / 6000

Heavy oil 1700 – 5000 / 6000

WK 70/1-B ZM(H) Light oil 1200 – 6100 / 7700

Heavy oil 1800 – 6100 / 7700

WK 70/3-A ZM(H) Light oil 1800 – 9600 / 12000

Heavy oil 2150 – 9600 / 12000

WK 80/3-A ZM(H) Light oil 3200 –17600 / 22000

Heavy oil 3800 –17600 / 22000

Version 3LN multiflam®

WKGL light-oil burners *
Burner type Version Fuel Rating kW 0 5.000 10.000 15.000 20.000 25.000 30.000
2.500 7.500 12.500 17.500 22.500 27.500
ZM

WK 70/1-B* 3LN Light oil 1550 –10000 min. full load (kW) ZM 5000

WK 70/3-A* 3LN Light oil 1790 –13000

WK 80/1-A* 3LN Light oil 2380 –17000

* 3LN-version WK 70 and WK 80 burners are not available as single-fuel oil burners. However, the WKGL dual-fuel burners are available in a special
“oil only” execution without gas-side components. Refer to the price list for the appropriate price reduction.

Version 1SF
WKL and WKMS light and heavy-oil burners
Burner type Version Fuel Rating kW 0 5.000 10.000 15.000 20.000 25.000 30.000
2.500 7.500 12.500 17.500 22.500 27.500
ZMH / ZM

WK 50/2-A ZM(H)-1SF Light oil 1125 – 4800 / 6000 min. full load (kW) ZM/ZMH
Heavy oil 1700 – 4800 / 6000 4000 / 3200

WK 70/1-B ZM(H)-1SF Light oil 1800 – 6400 / 8000

Heavy oil 1800 – 6400 / 8000

WK 70/2-A ZM(H)-1SF Light oil 2500 – 9600 / 12000

Heavy oil 2500 – 9600 / 12000

WK 80/3-A ZM(H)-1SF Light oil 3200 –15200 / 19000

Heavy oil 3200 –15200 / 19000

16
Overview of capacities
Dual-fuel burners
Version ZM
WKGL and WKGMS dual-fuel burners
Burner type Version Fuel Rating kW 0 5.000 10.000 15.000 20.000 25.000 30.000
2.500 7.500 12.500 17.500 22.500 27.500
ZMH / ZM

WK 40/1-A ZM(H) Nat. gas 300 – 1800 / 2200 min. full load (kW) ZM/ZMH
LPG 300 – 1800 / 2200 1000 / 1000
Light oil 450 – 1800 / 2200 min. full load (kW) ZM/ZMH
Heavy oil 550 – 1800 / 2200 1200 / 1200

WK 40/2-A ZM(H) Nat. gas 400 – 2500 / 3000

LPG 400 – 2500 / 3000
Light oil 650 – 2500 / 3000
Heavy oil 750 – 2500 / 3000

WK 50/1-B ZM(H) Nat. gas 600 – 3200 / 4000

LPG 600 – 3200 / 4000
Light oil 712 – 3200 / 4000
Heavy oil 1012 – 3200 / 4000

WK 50/2-A ZM(H) Nat. gas 800 – 5000 / 6000

LPG 800 – 5000 / 6000
Light oil 1125 – 5000 / 6000
Heavy oil 1700 – 5000 / 6000

WK 70/1-B ZM(H) Nat. gas 900 – 6100 / 7700

Light oil 1200 – 6100 / 7700
Heavy oil 1800 – 6100 / 7700

Burner-selection criterion:
The minimum full-load rating within a burner’s capacity range corresponds to the maximum rating of the next smallest size of the same version burner.

Version ZM: Combustion air temperatures up to 40 °C See the planning and installation handbook for fan selection and arrangement,
Version ZMH: Combustion air temperatures up to 250 °C gas valve trains, special equipment, technical data, and dimensions.

17
Overview of capacities
Dual-fuel burners
Version NR
WKGL and WKGMS dual-fuel burners
Burner type Version Fuel Rating kW 0 5.000 10.000 15.000 20.000 25.000 30.000
2.500 7.500 12.500 17.500 22.500 27.500
ZMH / ZM

WK 50/1-B ZM(H)-NR Nat. gas 600 – 3200 / 4000

LPG 600 – 3200 / 4000 min. full load (kW) ZM/ZMH
Light oil 712 – 3200 / 4000 3000 / 2500
Heavy oil 1000 – 3200 / 4000

WK 50/2-A ZM(H)-NR Nat. gas 800 – 5000 / 6000

LPG 800 – 5000 / 6000
Light oil 1125 – 5000 / 6000
Heavy oil 1700 – 5000 / 6000

WK 70/1-B ZM(H)-NR Nat. gas 1100 – 6100 / 7700

LPG 1100 – 6100 / 7700
Light oil 1100 – 6100 / 7700
Heavy oil 1800 – 6100 / 7700

WK 70/3-A ZM(H)-NR Nat. gas 1400 – 9600 / 12000

LPG 2000 – 9600 / 12000
Light oil 1800 – 9600 / 12000
Heavy oil 2000 – 9600 / 12000

WK 80/3-A ZM(H)-NR Nat. gas 2200 –17600 / 22000

LPG 3200 –17600 / 22000
Light oil 3200 –17600 / 22000
Heavy oil 3800 –17600 / 22000

Version 1LN
WKGL dual-fuel burners
Burner type Version Fuel Rating kW 0 5.000 10.000 15.000 20.000 25.000 30.000
2.500 7.500 12.500 17.500 22.500 27.500
ZMH / ZM

WK 50/1-B ZM(H)-1LN Nat. gas 600 – 3000 / 3600

min. full load (kW) ZM/ZMH
LPG 600 – 3000 / 3600
2000 / 2000
Light oil 800 – 3000 / 3600

WK 50/2-A ZM(H)-1LN Nat. gas 800 – 4800 / 5500

LPG 950 – 4800 / 5500
Light oil 1125 – 4800 / 5500

WK 70/1-B ZM(H)-1LN Nat. gas 900 – 5600 / 7000

LPG 1000 – 5600 / 7000
Light oil 1370 – 5600 / 7000

WK 70/2-A ZM(H)-1LN Nat. gas 1100 – 9600 / 12000

LPG 1400 – 9600 / 12000
Light oil 1900 – 9600 / 12000

Burner-selection criterion:
The minimum full-load rating within a burner’s capacity range corresponds to the maximum rating of the next smallest size of the same version burner.

18
Version 3LN multiflam®
WKGL dual-fuel burners
Burner type Version Fuel Rating kW 0 5.000 10.000 15.000 20.000 25.000 30.000
2.500 7.500 12.500 17.500 22.500 27.500
ZM

WK 70/1-B 3LN Nat. gas 1000 – 10000

LPG 1550 – 10000 min. full load (kW) ZM 5000
Light oil 1550 – 10000

WK 70/3-A 3LN Nat. gas 1100 – 13000

LPG 1750 – 13000
Light oil 1790 – 13000

WK 80/1-A 3LN Nat. gas 1800 – 17000

LPG 2000– 17000
Light oil 2380– 17000

Version 1SF
WKGL and WKGMS dual-fuel burners
Burner type Version Fuel Rating kW 0 5.000 10.000 15.000 20.000 25.000 30.000
2.500 7.500 12.500 17.500 22.500 27.500
ZMH / ZM

WK 70/1-B ZM(H)-1SF Nat. gas 1000 – 6400 / 8000

min. full load (kW) ZM/ZMH
Light oil 1800 – 6400 / 8000
6000 / 5000
Heavy oil 1800 – 6400 / 8000

WK 70/2-A ZM(H)-1SF Nat. gas 2500 – 9600 / 12000

Light oil 2500 – 9600 / 12000
Heavy oil 2500 – 9600 / 12000

WK 80/3-A ZM(H)-1SF Nat. gas 2500 –15200 / 19000

Light oil 3200 –15200 / 19000
Heavy oil 3200 –15200 / 19000

Version ZM: Combustion air temperatures up to 40 °C See the planning and installation handbook for fan selection and arrangement,
Version ZMH: Combustion air temperatures up to 250 °C gas valve trains, special equipment, technical data, and dimensions.

19
Burner selection based on steam boiler rating
Steam rate t/h 15
Steam pressure bar 10 16 25

Steam temperature °C 180 201 300 400 224 300 400

Feed-water temperature °C 80 104 80 104 80 104 80 104 80 104 80 104 80 104

Firing rate MW 10.4 10.0 10.5 10.0 11.5 11.0 12.4 12.0 10.5 10.1 11.4 10.9 12.3 11.9
Oil flow rate (LHV=11.86 kWh/kg) kg/h 876 840 881 845 967 931 1046 1009 884 848 958 922 1040 1004

Gas flow rate (LHV =10.35 kWh/m³) m³/h 1004 963 1010 968 1108 1067 1198 1157 1013 972 1098 1057 1192 1151
Min. gas supply pressure * mbar 200 200 200 200 200 200 200 200 200 200 200 200 200 200

Gas flow rate (LHV = 8.83 kWh/m³) m³/h 1177 1128 1184 1135 1299 1250 1404 1356 1188 1139 1287 1238 1397 1349
Min. gas supply pressure * mbar 200 200 200 200 200 200 200 200 200 200 200 200 200 200
Burner:

Oil burner WK(L/MS) 70/3 ZM 70/3 ZM 70/3 ZM 70/3 ZM 70/3 ZM 70/3 ZM 80/3 ZM 70/3 ZM 70/3 ZM 70/3 ZM 70/3 ZM 70/3 ZM 80/3 ZM 70/3 ZM

Gas burner WKG.. 70/3 ZM-NR 70/3 ZM-NR 70/3 ZM-NR 70/3 ZM-NR 70/3 ZM-NR 70/3 ZM-NR 80/3 ZM-NR 70/3 ZM-NR 70/3 ZM-NR 70/3 ZM-NR 70/3 ZM-NR 70/3 ZM-NR 80/3 ZM-NR 70/3 ZM-NR
80/4 ZM-VSF 80/4 ZM-VSF

Dual-fuel burner WKGL.. 70/3 ZM-NR 70/3 ZM-NR 70/3 ZM-NR 70/3 ZM-NR 70/3 ZM-NR 70/3 ZM-NR 80/3 ZM-NR 70/3 ZM-NR 70/3 ZM-NR 70/3 ZM-NR 70/3 ZM-NR 70/3 ZM-NR 80/3 ZM-NR 70/3 ZM-NR
WKGMS.. 70/3 ZM-NR 70/3 ZM-NR 70/3 ZM-NR 70/3 ZM-NR 70/3 ZM-NR 70/3 ZM-NR 80/3 ZM-NR 70/3 ZM-NR 70/3 ZM-NR 70/3 ZM-NR 70/3 ZM-NR 70/3 ZM-NR 80/3 ZM-NR 70/3 ZM-NR

Combustion air fan:

Air volume m³/h 14000 13500 14000 13500 15500 15000 17000 16000 14000 13500 15500 15000 17000 16000

Steam rate t/h 20

Steam pressure bar 10 16 25

Steam temperature °C 180 201 300 400 224 300 400

Feed-water temperature °C 80 104 80 104 80 104 80 104 80 104 80 104 80 104

Firing rate MW 13.9 13.3 13.9 13.4 15.3 14.7 16.5 16.0 14.0 13.4 15.2 14.6 16.5 15.9
Oil flow rate (LHV=11.86 kWh/kg) kg/h 1169 1120 1175 1127 1289 1241 1394 1346 1179 1131 1278 1229 1387 1339

Gas flow rate (LHV =10.35 kWh/m³) m³/h 1339 1284 1347 1291 1477 1422 1598 1542 1351 1295 1464 1409 1590 1534
Min. gas supply pressure * mbar 200 200 200 200 200 200 200 200 200 200 200 200 200 200

Gas flow rate (LHV = 8.83 kWh/m³) m³/h 1570 1505 1578 1513 1732 1667 1873 1808 1583 1518 1716 1651 1863 1798
Min. gas supply pressure * mbar 200 200 200 200 250 200 250 250 200 200 250 200 250 250

Burner:

Oil burner WK(L/MS) 80/3 ZM 80/3 ZM 80/3 ZM 80/3 ZM 80/3 ZM 80/3 ZM 80/3 ZM 80/3 ZM 80/3 ZM 80/3 ZM 80/3 ZM 80/3 ZM 80/3 ZM 80/3 ZM

Gas burner WKG.. 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR
80/4 ZM-VSF 80/4 ZM-VSF 80/4 ZM-VSF 80/4 ZM-VSF 80/4 ZM-VSF 80/4 ZM-VSF 80/4 ZM-VSF 80/4 ZM-VSF 80/4 ZM-VSF 80/4 ZM-VSF 80/4 ZM-VSF 80/4 ZM-VSF 80/4 ZM-VSF 80/4 ZM-VSF

Dual-fuel burner WKGL.. 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR
WKGMS.. 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR

Combustion air fan:

Air volume m³/h 19000 18000 19000 18000 21000 20000 22000 22000 19000 18000 21000 20000 22000 22000

Steam rate t/h 25

Steam pressure bar 10 16 25

Steam temperature °C 180 201 300 400 224 300 400

Feed-water temperature °C 80 104 80 104 80 104 80 104 80 104 80 104 80 104

Firing rate MW 17.3 16.6 17.4 16.7 19.1 18.4 20.7 20.0 17.5 16.8 18.9 18.2 20.6 19.8
Oil flow rate (LHV=11.86 kWh/kg) kg/h 1461 1400 1469 1408 1612 1551 1743 1682 1474 1413 1597 1537 1734 1674

Gas flow rate (LHV =10.35 kWh/m³) m³/h 1674 1605 1683 1614 1847 1778 1997 1928 1689 1619 1830 1761 1987 1918
Min. gas supply pressure * mbar 250 250 250 250 250 250 250 250 250 250 250 250 250 250

Gas flow rate (LHV = 8.83 kWh/m³) m³/h 1962 1881 1973 1892 2165 2084 2341 2259 1979 1898 2145 2064 2329 2248
Min. gas supply pressure * mbar 300 300 300 300 300 300 500 300 300 300 300 300 500 300

Burner:

Oil burner WK(L/MS) 80/3 ZM 80/3 ZM 80/3 ZM 80/3 ZM 80/3 ZM 80/3 ZM 80/3 ZM 80/3 ZM 80/3 ZM 80/3 ZM 80/3 ZM 80/3 ZM 80/3 ZM 80/3 ZM

Gas burner WKG.. 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR
80/4 ZM-VSF 80/4 ZM-VSF 80/4 ZM-VSF 80/4 ZM-VSF 80/4 ZM-VSF 80/4 ZM-VSF 80/4 ZM-VSF 80/4 ZM-VSF 80/4 ZM-VSF 80/4 ZM-VSF 80/4 ZM-VSF 80/4 ZM-VSF 80/4 ZM-VSF 80/4 ZM-VSF

Dual-fuel burner WKGL.. 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR
WKGMS.. 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR

Combustion air fan:

Air volume m³/h 24000 23000 24000 23000 26000 25000 28000 27000 24000 23000 26000 25000 28000 27000

*) Total resistance < 30 mbar (boiler, flue-gas heat exchanger, and flue gas system) o. a. = on application Saturated steam Superheated steam

20
 Guidelines at 98 % boiler efficiency
Installation altitude < 500 m, combustion-air temperature < 40 °C

Steam rate t/h 30

Steam pressure bar 10 16 25

Steam temperature °C 180 201 300 400 224 300 400

Feed-water temperature °C 80 104 80 104 80 104 80 104 80 104 80 104 80 104

Firing rate MW 20.8 19.9 20.9 20.0 22.9 22.1 24.8 23.9 21.0 20.1 22.7 21.9 24.7 23.8
Oil flow rate (LHV=11.86 kWh/kg) kg/h 1753 1680 1763 1690 1934 1861 2091 2019 1768 1696 1917 1844 2081 2008

Gas flow rate (LHV =10.35 kWh/m³) m³/h 2009 1925 2020 1937 2216 2133 2396 2313 2026 1943 2196 2113 2385 2301
Min. gas supply pressure * mbar 300 300 300 300 300 300 300 300 300 300 300 300 300 300

Gas flow rate (LHV = 8.83 kWh/m³) m³/h 2354 2257 2368 2270 2598 2500 2809 2711 2375 2278 2574 2477 2795 2697
Min. gas supply pressure * mbar 500 300 500 500 500 500 500 500 500 500 500 500 500 500
Burner:

Oil burner WK(L/MS) 80/3 ZM 80/3 ZM 80/3 ZM 80/3 ZM – – – – 80/3 ZM 80/3 ZM – 80/3 ZM – –

Gas burner WKG.. 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/5 ZM-VSF 80/5 ZM-VSF 80/5 ZM-VSF 80/5 ZM-VSF 80/3 ZM-NR 80/3 ZM-NR 80/5 ZM-VSF 80/3 ZM-NR 80/5 ZM-VSF 80/5 ZM-VSF
80/4 ZM-VSF 80/4 ZM-VSF 80/4 ZM-VSF 80/4 ZM-VSF 80/4 ZM-VSF 80/4 ZM-VSF 80/4 ZM-VSF

Dual-fuel burner WKGL.. 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR – – – – 80/3 ZM-NR 80/3 ZM-NR – 80/3 ZM-NR – –
WKGMS.. 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR

Combustion air fan:

Air volume m³/h 28000 27000 28000 27000 31000 30000 33000 32000 28000 27000 31000 30000 33000 32000

Steam rate t/h 35

Steam pressure bar 10 16 25

Steam temperature °C 180 201 300 400 224 300 400

Feed-water temperature °C 80 104 80 104 80 104 80 104 80 104 80 104 80 104

Firing rate MW 24.3 23.2 24.4 23.4 26.8 25.8 28.9 27.9 24.5 23.5 26.5 25.5 28.8 27.8
Oil flow rate (LHV=11.86 kWh/kg) kg/h 2045 1960 2056 1972 2256 2172 2440 2355 2063 1978 2236 2152 2428 2343

Gas flow rate (LHV =10.35 kWh/m³) m³/h 2343 2246 2356 2259 2586 2489 2796 2699 2364 2267 2562 2465 2782 2685
Min. gas supply pressure * mbar 300 300 300 300 500 300 500 500 300 300 500 300 500 500

Gas flow rate (LHV = 8.83 kWh/m³) m³/h 2747 2633 2762 2648 3031 2917 3277 3163 2771 2657 3004 2890 3261 3147
Min. gas supply pressure * mbar 500 500 500 500 500 500 500 500 500 500 500 500 500 500

Burner:

Oil burner WK(L/MS) – – – – – – – – – – – – – –

Gas burner WKG.. 80/5 ZM-VSF 80/5 ZM-VSF 80/5 ZM-VSF 80/5 ZM-VSF 80/5 ZM-VSF 80/5 ZM-VSF 80/6 ZM-VSF 80/6 ZM-VSF 80/5 ZM-VSF 80/5 ZM-VSF 80/5 ZM-VSF 80/5 ZM-VSF 80/6 ZM-VSF 80/6 ZM-VSF
80/6 ZM-VSF 80/6 ZM-VSF

Dual-fuel burner WKGL.. – – – – – – – – – – – – – –

WKGMS.. – – – – – – – – – – – – – –

Combustion air fan:

Air volume m³/h 33000 31000 33000 32000 36000 35000 39000 38000 33000 32000 36000 34000 39000 37000

Steam rate t/h 40

Steam pressure bar 10 16 25

Steam temperature °C 180 201 300 400 224 300 400

Feed-water temperature °C 80 104 80 104 80 104 80 104 80 104 80 104 80 105

Firing rate MW 27.7 26.6 27.9 26.7 30.6 29.4 33.1 31.9 28.0 26.8 30.3 29.2 32.9 31.8
Oil flow rate (LHV=11.86 kWh/kg) kg/h 2337 2240 2350 2253 2579 2482 – 2692 2358 2261 2556 2459 – 2678

Gas flow rate (LHV =10.35 kWh/m³) m³/h 2678 2567 2693 2582 2955 2844 – 3084 2702 2591 2929 2818 – 3068
Min. gas supply pressure * mbar 500 500 500 500 500 500 – 500 500 500 500 500 – 500

Gas flow rate (LHV = 8.83 kWh/m³) m³/h 3139 3009 3157 3027 o. a. o. a. – o. a. 3167 3037 o. a. o. a. – o. a.
Min. gas supply pressure * mbar 500 500 500 500 o. a. o. a. – o. a. 500 500 o. a. o. a. – o. a.

Burner:

Oil burner WK(L/MS) – – – – – – – – – – – – – –

Gas burner WKG.. 80/6ZM-VSF 80/5ZM-VSF 80/6ZM-VSF 80/5ZM-VSF 80/6ZM-VSF 80/6ZM-VSF – 80/6ZM-VSF 80/6ZM-VSF 80/5ZM-VSF 80/6ZM-VSF 80/6ZM-VSF – 80/6ZM-VSF
80/6ZM-VSF 80/6ZM-VSF 80/6ZM-VSF

Dual-fuel burner WKGL.. – – – – – – – – – – – – – –

WKGMS.. – – – – – – – – – – – – – –

Combustion air fan:

Air volume m³/h 37000 36000 38000 36000 41000 40000 – 43000 38000 36000 41000 39000 – 43000

*)
Total resistance < 30 mbar (boiler, flue-gas heat exchanger, and flue gas system) o. a. = on application Saturated steam Superheated steam

21
Burner selection based on steam boiler rating
Steam rate t/h 15
Steam pressure bar 10 16 25

Steam temperature °C 180 201 300 400 224 300 400

Feed-water temperature °C 80 104 80 104 80 104 80 104 80 104 80 104 80 104

Firing rate MW 11.3 10.8 11.4 10.9 12.5 12.0 13.5 13.0 11.4 10.9 12.4 11.9 13.4 13.0
Oil flow rate (LHV=11.86 kWh/kg) kg/h 954 915 960 920 1053 1013 1139 1099 963 923 1044 1004 1133 1093

Gas flow rate (LHV =10.35 kWh/m³) m³/h 1094 1048 1100 1054 1207 1161 1305 1259 1103 1058 1196 1151 1298 1253
Min. gas supply pressure * mbar 200 200 200 200 200 200 200 200 200 200 200 200 200 200

Gas flow rate (LHV = 8.83 kWh/m³) m³/h 1282 1229 1289 1236 1414 1361 1529 1476 1293 1240 1402 1349 1522 1469
Min. gas supply pressure * mbar 200 200 200 200 200 200 200 200 200 200 200 200 200 200

Burner:

Oil burner WK(L/MS) 70/3 ZM 70/3 ZM 70/3 ZM 70/3 ZM 80/3 ZM 70/3 ZM 80/3 ZM 80/3 ZM 70/3 ZM 70/3 ZM 80/3 ZM 70/3 ZM 80/3 ZM 80/3 ZM

Gas burner WKG.. 70/3 NR 70/3 NR 70/3 NR 70/3 NR 80/3 NR 70/3 NR 80/3 NR 80/3 NR 70/3 NR 70/3 NR 80/3 NR 70/3 NR 80/3 NR 80/3 NR

Dual-fuel burner WKGL.. 70/3 NR 70/3 NR 70/3 NR 70/3 NR 80/3 NR 70/3 NR 80/3 NR 80/3 NR 70/3 NR 70/3 NR 80/3 NR 70/3 NR 80/3 NR 80/3 NR
WKGMS.. 70/3 NR 70/3 NR 70/3 NR 70/3 NR 80/3 NR 70/3 NR 80/3 NR 80/3 NR 70/3 NR 70/3 NR 80/3 NR 70/3 NR 80/3 NR 80/3 NR

Combustion air fan:

Air volume m³/h 15500 14500 15500 15000 17000 16000 18000 18000 15500 15000 17000 16000 18000 18000

Steam rate t/h 20

Steam pressure bar 10 16 25

Steam temperature °C 180 201 300 400 224 300 400

Feed-water temperature °C 80 104 80 104 80 104 80 104 80 104 80 104 80 104

Firing rate MW 15.1 14.5 15.2 14,6 16.7 16.0 18.0 17.4 15.2 14.6 16.5 15.9 17.9 17.3
Oil flow rate (LHV=11.86 kWh/kg) kg/h 1272 1220 1280 1227 1404 1351 1518 1465 1284 1231 1391 1339 1511 1458

Gas flow rate (LHV =10.35 kWh/m³) m³/h 1458 1398 1466 1406 1609 1548 1740 1679 1471 1411 1594 1534 1731 1671
Min. gas supply pressure * mbar 200 200 200 200 200 200 250 200 200 200 200 200 250 200

Gas flow rate (LHV = 8.83 kWh/m³) m³/h 1709 1638 1719 1648 1886 1815 2039 1968 1724 1653 1869 1798 2029 1958
Min. gas supply pressure * mbar 250 250 250 250 250 250 300 300 250 250 250 250 300 300

Burner:

Oil burner WK(L/MS) 80/3 ZM 80/3 ZM 80/3 ZM 80/3 ZM 80/3 ZM 80/3 ZM 80/3 ZM 80/3 ZM 80/3 ZM 80/3 ZM 80/3 ZM 80/3 ZM 80/3 ZM 80/3 ZM

Gas burner WKG.. 80/3 NR 80/3 NR 80/3 NR 80/3 NR 80/3 NR 80/3 NR 80/3 NR 80/3 NR 80/3 NR 80/3 NR 80/3 NR 80/3 NR 80/3 NR 80/3 NR
80/4 VSF 80/4 VSF 80/4 VSF 80/4 VSF 80/4 VSF 80/4 VSF 80/4 VSF 80/4 VSF 80/4 VSF 80/4 VSF 80/4 VSF 80/4 VSF 80/4 VSF 80/4 VSF

Dual-fuel burner WKGL.. 80/3 NR 80/3 NR 80/3 NR 80/3 NR 80/3 NR 80/3 NR 80/3 NR 80/3 NR 80/3 NR 80/3 NR 80/3 NR 80/3 NR 80/3 NR 80/3 NR
WKGMS.. 80/3 NR 80/3 NR 80/3 NR 80/3 NR 80/3 NR 80/3 NR 80/3 NR 80/3 NR 80/3 NR 80/3 NR 80/3 NR 80/3 NR 80/3 NR 80/3 NR
Combustion air fan:

Air volume m³/h 21000 20000 21000 20000 23000 22000 24000 24000 21000 20000 22000 22000 24000 23000

Steam rate t/h 25

Steam pressure bar 10 16 25

Steam temperature °C 180 201 300 400 224 300 400

Feed-water temperature °C 80 104 80 104 80 104 80 104 80 104 80 104 80 104

Firing rate MW 18.9 18.1 19.0 18.2 20.8 20.0 22.5 21.7 19.0 18.2 20.6 19.8 22.4 21.6
Oil flow rate (LHV=11.86 kWh/kg) kg/h 1591 1525 1599 1534 1755 1689 1898 1832 1605 1539 1739 1673 1888 1822

Gas flow rate (LHV =10.35 kWh/m³) m³/h 1823 1747 1833 1757 2011 1936 2174 2099 1839 1763 1993 1918 2164 2088
Min. gas supply pressure * mbar 250 250 250 250 300 300 300 300 250 250 300 250 300 300

Gas flow rate (LHV = 8.83 kWh/m³) m³/h 2136 2048 2148 2060 2357 2269 2549 2460 2155 2067 2336 2248 2536 2448
Min. gas supply pressure * mbar 300 300 1000 300 1000 1000 1000 1000 1000 300 1000 1000 1000 1000

Burner:

Oil burner WK(L/MS) 80/3 ZM 80/3 ZM 80/3 ZM 80/3 ZM 80/3 ZM 80/3 ZM - 80/3 ZM 80/3 ZM 80/3 ZM 80/3 ZM 80/3 ZM - 80/3 ZM

Gas burner WKG.. 80/3 NR 80/3 NR 80/3 NR 80/3 NR 80/3 NR 80/3 NR 80/5 VSF 80/3 NR 80/3 NR 80/3 NR 80/3 NR 80/3 NR 80/5 VSF 80/3 NR
80/4 VSF 80/4 VSF 80/4 VSF 80/4 VSF 80/4 VSF 80/4 VSF 80/4 VSF 80/4 VSF 80/4 VSF 80/4 VSF 80/4 VSF 80/4 VSF

Dual-fuel burner WKGL.. 80/3 NR 80/3 NR 80/3 NR 80/3 NR 80/3 NR 80/3 NR - 80/3 NR 80/3 NR 80/3 NR 80/3 NR 80/3 NR - 80/3 NR
WKGMS.. 80/3 NR 80/3 NR 80/3 NR 80/3 NR 80/3 NR 80/3 NR - 80/3 NR 80/3 NR 80/3 NR 80/3 NR 80/3 NR - 80/3 NR

Combustion air fan:

Air volume m³/h 26000 25000 26000 25000 28000 27000 30000 29000 26000 25000 28000 27000 30000 29000

*) Total resistance < 30 mbar (boiler, flue-gas heat exchanger, and flue gas system) o. a. = on application Saturated steam Superheated steam

22
 Guidelines at 92 % boiler efficiency
Installation altitude < 500 m, combustion-air temperature < 40 °C

Steam rate t/h 30

Steam pressure bar 10 16 25

Steam temperature °C 180 201 300 400 224 300 400

Feed-water temperature °C 80 104 80 104 80 104 80 104 80 104 80 104 80 104

Firing rate MW 22.1 21.2 22.3 21.4 24.4 23.5 26.4 25.5 22.3 21.4 24.2 23.3 26.3 25.4
Oil flow rate (LHV=11.86 kWh/kg) kg/h 1867 1790 1878 1800 2060 1983 2228 2150 1884 1806 2042 1964 2217 2139

Gas flow rate (LHV =10.35 kWh/m³) m³/h 2140 2051 2152 2063 2361 2272 2553 2464 2158 2070 2340 2251 2540 2451
Min. gas supply pressure * mbar 300 300 300 300 300 300 500 300 300 300 300 300 500 300

Gas flow rate (LHV = 8.83 kWh/m³) m³/h 2508 2404 2522 2418 2767 2663 2992 2888 2530 2426 2742 2639 2977 2873
Min. gas supply pressure * mbar 500 500 500 500 500 500 500 500 500 500 500 500 500 500

Burner:

Oil burner WK(L/MS) – 80/3 ZM – 80/3 ZM – – – – – 80/3 ZM – – – –

Gas burner WKG.. 80/5 ZM-VSF 80/3 ZM-NR 80/5 ZM-VSF 80/3 ZM-NR 80/5 ZM-VSF 80/5 ZM-VSF 80/5 ZM-VSF 80/5 ZM-VSF 80/5 ZM-VSF 80/3 ZM-NR 80/5 ZM-VSF 80/5 ZM-VSF 80/5 ZM-VSF 80/5 ZM-VSF
80/4 ZM-VSF 80/4 ZM-VSF 80/6 ZM-VSF 80/4 ZM-VSF 80/6 ZM-VSF

Dual-fuel burner WKGL.. - 80/3 ZM-NR – 80/3 ZM-NR – – – – – 80/3 ZM-NR – – – –

WKGMS.. 80/3 ZM-NR 80/3 ZM-NR 80/3 ZM-NR

Combustion air fan:

Air volume m³/h 30000 29000 30000 29000 33000 32000 36000 34000 30000 29000 33000 31000 35000 34000

Steam rate t/h 35

Steam pressure bar 10 16 25

Steam temperature °C 180 201 300 400 224 300 400

Feed-water temperature °C 80 104 80 104 80 104 80 104 80 104 80 104 80 104

Firing rate MW 25.8 24.8 26.0 24.9 28.5 27.4 30.8 29.8 26.1 25.0 28.3 27.2 30.7 29.6
Oil flow rate (LHV=11.86 kWh/kg) kg/h 2178 2088 2191 2100 2404 2313 2599 2509 2198 2107 2382 2292 2586 2496

Gas flow rate (LHV =10.35 kWh/m³) m³/h 2496 2393 2510 2407 2754 2651 2978 2875 2518 2415 2730 2626 2963 2860
Min. gas supply pressure * mbar 300 300 300 300 500 500 500 500 500 300 500 500 500 500

Gas flow rate (LHV = 8.83 kWh/m³) m³/h 2926 2805 2942 2821 3228 3107 o. a. o. a. 2952 2831 3199 3078 o. a. o. a.
Min. gas supply pressure * mbar 500 500 500 500 500 500 o. a. o. a. 500 500 500 500 o. a. o. a.

Burner:

Oil burner WK(L/MS) – – – – – – – – – – – – – –

Gas burner WKG.. 80/5 ZM-VSF 80/5 ZM-VSF 80/5 ZM-VSF 80/5 ZM-VSF 80/6 ZM-VSF 80/6 ZM-VSF 80/6 ZM-VSF 80/6 ZM-VSF 80/5 ZM-VSF 80/5 ZM-VSF 80/6 ZM-VSF 80/6 ZM-VSF 80/6 ZM-VSF 80/6 ZM-VSF
80/6 ZM-VSF

Dual-fuel burner WKGL.. – – – – – – – – – – – – – –

WKGMS.. – – – – – – – – – – – – – –

Combustion air fan:

Air volume m³/h 35000 33000 35000 34000 38000 37000 41000 40000 35000 34000 38000 37000 41000 40000

Steam rate t/h 40

Steam pressure bar 10 16 25

Steam temperature °C 180 201 300 400 224 300 400

Feed-water temperature °C 80 104 80 104 80 105 80 104 80 104 80 104 80 104

Firing rate MW 29.5 28.3 29.7 28.5 32.6 31.4 35.2 34.0 29.8 28.6 32.3 31.1 35.1 33.8
Oil flow rate (LHV=11.86 kWh/kg) kg/h 2490 2386 2503 2400 – 2644 – – 2512 2408 – 2619 – –

Gas flow rate (LHV =10.35 kWh/m³) m³/h 2853 2735 2869 2751 – 3030 – – 2878 2760 – 3001 – –
Min. gas supply pressure * mbar 500 500 500 500 – 500 – – 500 500 – 500 – –

Gas flow rate (LHV = 8.83 kWh/m³) m³/h o. a. 3205 o. a. o. a. – o. a. – – o. a. o. a. – o. a. – –

Min. gas supply pressure * mbar o. a. 500 o. a. 500 – o. a. – – o. a. 500 – o. a. – –

Burner:

Oil burner WK(L/MS) – – – – – – – – – – – – – –

Gas burner WKG.. 80/6 ZM-VSF 80/6 ZM-VSF 80/6 ZM-VSF 80/6 ZM-VSF – 80/6 ZM-VSF – – 80/6 ZM-VSF 80/6 ZM-VSF – 80/6 ZM-VSF – –

Dual-fuel burner WKGL.. – – – – – – – – – – – – – –

WKGMS.. – – – – – – – – – – – – – –

Combustion air fan:

Air volume m³/h 40000 38000 40000 38000 – 42000 – – 40000 38000 – 42000 – –

*)
Total resistance < 30 mbar (boiler, flue-gas heat exchanger, and flue gas system) o. a. = on application Saturated steam Superheated steam

23
Correctly sized gas valve trains
save money and trouble
Low-pressure gas supply
Rating FRS regulator PE <300 mbar SKP25 regulator PE <360 mbar
Gas shut-off valve assembly Gas shut-off valve assembly
DMV - Dungs VGD - Siemens VGD - Siemens

QF WKG(L) ΔP WKG ΔP DN80 DN100 DN125 DN150 DN125 DN150

Burner Burner PE PA PE PA PE PA PE PA PE PA PE PA
MW ZM-NR mbar ZM-VSF mbar mbar mbar mbar mbar mbar mbar mbar mbar mbar mbar mbar mbar

Nat. gas E LHV = 10.35 kWh/mn3; d = 0.606

8 70/3 20 – – 182 101 101 66 75 56 63 53 – – – –
9 70/3 25 – – 229 127 126 83 94 70 79 66 – – – –
10 70/3 31 – – 282 157 155 101 115 87 96 81 – – – –
11 70/3 38 – – – – 187 122 138 104 115 98 – – – –
12 70/3 45 – – – – 221 145 164 124 136 116 – – – –
13 80/3 31 80/4 29 – – 219 130 151 105 119 96 125 79 109 79
14 80/3 33 80/4 30 – – 242 139 163 110 126 100 133 81 114 82
15 80/3 37 80/4 32 – – 267 149 176 116 134 104 141 82 120 83
16 80/3 41 80/4 34 – – 293 160 190 122 142 108 150 83 126 92
17 80/3 45 80/4 36 – – – – 213 136 158 120 168 92 141 104
18 80/3 50 80/4 38 – – – – 239 153 178 135 189 104 158 116
19 80/3 55 80/4 41 – – – – 266 170 198 151 210 116 176 128
20 80/3 61 80/4 45 – – – – 294 188 219 167 232 128 194 140
21 80/3 67 80/4 49 – – – – – – 240 183 254 140 213 140
22 80/3 74 80/4 54 – – – – – – 263 200 279 154 233 154
23 – – 80/5 52 – – – – – – 248 180 – – 215 129
24 – – 80/5 55 – – – – – – 269 195 – – 233 140
25 – – 80/5 57 – – – – – – 290 210 – – 251 150
26 – – 80/5 60 – – – – – – – – – – 270 160
27 – – 80/5 63 – – – – – – – – – – 289 171
28 – – 80/6 39 – – – – – – – – – – o. a. o. a.
29 – – 80/6 41 – – – – – – – – – – o. a. o. a.
30 – – 80/6 43 – – – – – – – – – – o. a. o. a.
31 – – 80/6 44 – – – – – – – – – – – –
32 – – 80/6 45 – – – – – – – – – – – –
Nat. gas LL LHV = 8.83 kWh/mn3; d = 0.641
8 70/3 20 – – 265 149 147 97 110 83 92 78 – – – –
9 70/3 25 – – – – 185 122 137 105 115 98 – – – –
10 70/3 31 – – – – 227 150 168 128 141 121 – – – –
11 70/3 38 – – – – 273 181 202 155 169 145 – – – –
12 70/3 45 – – – – – – 240 183 200 172 – – – –
13 80/3 31 80/4 29 – – – – 210 144 164 131 172 108 149 108
14 80/3 33 80/4 30 – – – – 228 152 174 136 183 109 156 109
15 80/3 37 80/4 32 – – – – 246 159 184 142 195 110 164 110
16 80/3 41 80/4 34 – – – – 266 167 195 147 208 111 173 111
17 80/3 45 80/4 36 – – – – 297 186 217 163 231 123 192 123
18 80/3 50 80/4 38 – – – – – – 244 184 260 138 215 138
19 80/3 55 80/4 41 – – – – – – 272 205 290 154 240 154
20 80/3 61 80/4 45 – – – – – – 300 226 – – 265 170
21 80/3 67 80/4 49 – – – – – – – – – – 290 186
22 80/3 74 80/4 54 – – – – – – – – – – –
23 – – 80/5 52 – – – – – – – – – – – –
24 – – 80/5 55 – – – – – – – – – – – –
25 – – 80/5 57 – – – – – – – – – – –
26 – – 80/5 60 – – – – – – – – – – – –
27 – – 80/5 63 – – – – – – – – – – – –
28 – – 80/6 39 – – – – – – – – – – – –
29 – – 80/6 41 – – – – – – – – – – – –
30 – – 80/6 43 – – – – – – – – – – – –
31 – – 80/6 44 – – – – – – – – – – – –
32 – – 80/6 45 – – – – – – – – – – –

• The overall resistance (combustion chamber and flue gas resistance) in mbar must be added to the minimum gas pressure determined from the above chart.
ATTENTION
NOTE

24
High-pressure gas supply
Rating High-pressure regulator PE 500 - 4000 mbar 1)
Gas shut-off valve assembly
DMV - Dungs VGD - Siemens

QF WKG(L)ΔP WKG ΔP DN80 DN100 DN125 DN150

Burner Burner PE PA PE PA PE PA PE PA
MW ZM-NR mbar ZM-VSF mbar mbar mbar mbar mbar mbar mbar mbar mbar

Nat. gas E LHV = 10.35 kWh/mn3; d = 0.606

8 70/3 20 – – 500-4000 101 500-4000 66 500-4000 56 500-4000 53
9 70/3 25 – – 500-4000 127 500-4000 83 500-4000 70 500-4000 66
10 70/3 31 – – 500-4000 157 500-4000 101 500-4000 87 500-4000 81
11 70/3 38 – – 500-4000 189 500-4000 122 500-4000 104 500-4000 98
12 70/3 45 – – – – 500-4000 145 500-4000 124 500-4000 116
13 80/3 31 80/4 29 – – 500-4000 130 500-4000 105 500-4000 96
14 80/3 33 80/4 30 – – 500-4000 139 500-4000 110 500-4000 100
15 80/3 37 80/4 32 – – 500-4000 149 500-4000 116 500-4000 104
16 80/3 41 80/4 34 – – 500-4000 160 500-4000 122 500-4000 108
17 80/3 45 80/4 36 – – 500-4000 179 500-4000 136 500-4000 120
18 80/3 50 80/4 38 – – 500-4000 201 500-4000 153 500-4000 135
19 80/3 55 80/4 41 – – 500-4000 225 500-4000 170 500-4000 151
20 80/3 61 80/4 45 – – 500-4000 248 500-4000 188 500-4000 167
21 80/3 67 80/4 49 – – 500-4000 272 500-4000 207 500-4000 183
22 80/3 74 80/4 54 – – 500-4000 299 500-4000 226 500-4000 200
23 – – 80/5 52 – – 500-4000 288 500-4000 209 500-4000 180
24 – – 80/5 55 – – 500-4000 312 500-4000 226 500-4000 195
25 – – 80/5 57 – – 500-4000 337 500-4000 244 500-4000 210
26 – – 80/5 60 – – – – 500-4000 262 500-4000 226
27 – – 80/5 63 – – – – 500-4000 280 500-4000 241
28 – – 80/6 39 – – – – 500-4000 299 500-4000 257
29 – – 80/6 41 – – – – 500-4000 318 500-4000 273
30 – – 80/6 43 – – – – – – 500-4000 289
31 – – 80/6 44 – – – – – – 500-4000 305
32 – – 80/6 45 – – – – – – 500-4000 322
Nat. gas LL LHV = 8.83 kWh/mn3; d = 0.641
8 70/3 20 – – 500-4000 149 500-4000 97 500-4000 83 500-4000 78
9 70/3 25 – – 500-4000 187 500-4000 122 500-4000 105 500-4000 98
10 70/3 31 – – – – 500-4000 150 500-4000 128 500-4000 121
11 70/3 38 – – – – 500-4000 181 500-4000 155 500-4000 145
12 70/3 45 – – – – 500-4000 – 500-4000 183 500-4000 172
13 80/3 31 80/4 29 – – 500-4000 181 500-4000 144 500-4000 131
14 80/3 33 80/4 30 – – 500-4000 194 500-4000 152 500-4000 136
15 80/3 37 80/4 32 – – 500-4000 208 500-4000 159 500-4000 142
16 80/3 41 80/4 34 – – 500-4000 223 500-4000 167 500-4000 147
17 80/3 45 80/4 36 – – 500-4000 248 500-4000 186 500-4000 163
18 80/3 50 80/4 38 – – 500-4000 279 500-4000 209 500-4000 184
19 80/3 55 80/4 41 – – 500-4000 311 500-4000 233 500-4000 205
20 80/3 61 80/4 45 – – – – 500-4000 257 500-4000 226
21 80/3 67 80/4 49 – – – – 500-4000 282 500-4000 248
22 80/3 74 80/4 54 – – – – 500-4000 309 500-4000 271
23 – – 80/5 52 – – – – 500-4000 286 500-4000 245
24 – – 80/5 55 – – – – 500-4000 310 500-4000 265
25 – – 80/5 57 – – – – – – 500-4000 286
26 – – 80/5 60 – – – – – – 500-4000 302
27 – – 80/5 63 – – – – – – 500-4000 315
28 – – 80/6 39 – – – – – – 500-4000 329
29 – – 80/6 41 – – – – – – – –
30 – – 80/6 43 – – – – – – – –
31 – – 80/6 44 – – – – – – – –
32 – – 80/6 45 – – – – – – – –

OF = Burner rating, PE = Pressure before ball valve, PA = Regulated gas pressure, o. a. = on application
PE / PA see page 28/29, 1) See accessories list for special 0.5-4/5/10 bar regulators and spring selections >240 mbar
• See planning handbook for LPG selection values up to 22 MW.

25
Fuel systems
Oil burners
WKL40, integral pump WKMS40, integral pump and preheater

13 3 6 8 2 13 3 4 10 6 8

P P

115V
115V

230V
115V 115V
P M P M

M 9 7 12 11 M 9 7 12 5 11

1 1

WKL50, 70, 80 WKMS50, 70, 80

3 6 8 2 3 4 10 6 8

P P

115V
115V

230V
115V 115V
P M P M

M M
9 7 12 11 9 7 12 5 11

1a 14 1a 14

26
WKL multiflam® Light-oil ignition burner, WKMS 80

14 3 6 8 8 11b 6 8 8 11b

P P

115V 115V

115V 115V
P M
M

M
1 13 26

1a 14 9 9 7 12 11a

LPG ignition pilot, WKMS 40 to 70

15 16 17 18 19 24 20 23 25

1 Oil pump
LPG LPG LPG
1a External pump station with pressure maintenance
26 2 Oil preheater
3 Strainer
Oil-firing burner with gas ignition 4 Temperature sensor in supply
5 Temperature sensor in return
6 Low-pressure switch
7 High-pressure switch
8 Solenoid valve in supply (fitted in the direction of flow)
LPG ignition burner, WKMS 80 9 Solenoid valve in return (fitted against the direction of flow)
10 Bypass solenoid valve (normally open)
11 Solenoid valve assembly
15 16 17 18 19 20 21 22 25 11a Nozzle head with secondary nozzles
11b Nozzle head with primary nozzle
P P 12 Oil regulator
13 Pressure regulating valve
14 Filter
15 LPG bottle (supplied by others)
16 LPG pressure regulator (accessory)
17 Hose rupture protection (accessory)
LPG 18 Ball valve
19 Pressure gauge with push-button valve
26
20 Low-gas-pressure switch
Oil-firing burner with gas ignition 21 High-gas-pressure switch
22 W-MF multi-function assembly
23 DMV gas solenoid valve assembly
24 FRS gas pressure regulator
25 Burner
26 Sub-assembly fitted to burner at works

27
Fuel systems
Gas and dual-fuel burners
Gas side, WKG(L) 40 – 80, WKGMS 40 – 70
A B C Versions ZM / NR / 1LN / 3LN / 1SF / VSF
Gas shut-off assembly type

9b 9b 10 11
High-pressure regulator
High-pressure supply with
Nominal valve train size

Low-pressure supply with

Low-pressure supply with

SKP regulator on VGD
WK burner size

FRS governor

A PE PA
assembly

P PP P
40 50 70 80
PE 1 2 3a 4a 4b 5 6 7 8
PE PE
> 300-
≤ 300 ≤ 360
4000
mbar mbar
mbar 1)
PA PA
PA
≤ 250 ≤ 210 /
≤ 200
mbar 240 mbar
Gas side, WKG(L) 80
mbar 2) 1) Versions NR / 3LN / 1SF / VSF

9b 9b 10 11
1 1/2“
W-MF
512
l l

DMV l l
2“
525/12
B PE PA

DN 65
DMV
5065/12
l l P P PP

1 2 5 6 7 3a 4d 5 8

DN 80
DMV
5080/12
l l
2)
Spring for PA > 250 mbar on application

Gas side, WKG(L) 40 – 80, WKGMS 40 – 70

DN 100
DMV l l Versions ZM / NR / 1LN / 3LN / 1SF / VSF
5100/12

9a 9a 10 11

DN 125
VGD
40.125
l l l

DN 150
VGD l l l
C PE PA
40.150

PE = Pressure before ball valve PA = Regulated pressure P P P

l Standard
1 2 3b 4c 5 6 7 8
l Optional SKP25 regulator for burner type WK 80, including
stabilisation section (suitable for horizontal burner installations only)
1) See accessories list for special 0.5-4/5/10 bar regulators and spring selections > 240 mbar

28
Gas side, WKG 40 – 70 Gas side, WKGMS 80 3) Versions ZM / NR / 1SF
Version LN
15 12 13 1 9a 4e 5 14 11

9a 9b 11 P P

16 14
LPG

PE PA
9b

PE PA V1 V2
P PP P

1 2 3a 4a 4b 5 6 7 8
PP P

1 2 3a 4b 5 6 7 8

Gas side, WKGMS 80 3) Versions ZM / NR / 1SF 1 Ball valve

2 Gas filter
15 12 13 1 9a 4e 5 14 11 3a Low-pressure regulator
3b High-pressure regulator incl. SAV / SBV
P P 4a High-gas-pressure switch on screwed valve trains
(mounted immediately after the low-pressure regulator)
4b High-gas-pressure switch on flanged valve trains
(mounted on the inlet of the valve assembly)
4c High-gas-pressure switch on screwed and flanged valve trains
16 14
LPG (mounted on the outlet-side of the high-pressure regulator assembly)
4d High-gas-pressure switch on flanged valve trains
9b (mounted on the outlet of the VGD assembly)
4e High-gas-pressure switch
(mounted on the LPG ignition-burner assembly)
PE V1 V2 PA 5 Low-gas-pressure switch
6 Valve-proving pressure switch
7 Double shut-off valve assembly
8 Gas butterfly valve
P P PP 9a Pressure gauge with push-button valve (standard)
9b Pressure gauge with push-button valve (accessory)
1 2 5 6 7 3a 4d 5 8 10 Pilot-line solenoid valve
11 Burner
12 LPG pressure regulator (accessory)
Gas side, WKGMS 80 3) Versions ZM / NR / 1SF 13 Hose rupture protection (accessory)
14 W-MF multi-function assembly
15 12 13 1 9a 4e 5 14 11
15 LPG tank (by others)
P P 16 Sub-assembly fitted to burner at works

Layout of the valve train (vertical burner installation)

The “offset gas butterfly and solenoid valves” option is strongly recommended
because of the increased heat radiation due to the vertical boiler design and the
9a 9a 16 14 high temperatures of media such as thermal fluid.
LPG
Note: This variant is not available with the SKP25 pressure regulator due to the
need for a stabilisation section.

Compensator
To enable a tension free mounting of the valve train, the fitting of a compensator is
PE PA V1 V2 recommended.

Optional thermal shut off (when required by local regulations)

Integrated into the ball valve on screwed valve trains. A separate component with
P P P
HTB seals fitted before the ball valve on flanged valve trains.
1 2 3b 4c 5 6 7 8 3)
LPG or natural gas pilot line as required (see page 11 for options).

29
Key dimensions at a glance
Ambient combustion air (ZM...)
l3

h3
G 3/4“

DN h1 h2
60 ZM-..
l2
l1
Optional
l6
compensator l4 l5
l9 l10

l7
l8

h3

l11
l12

Preheated combustion air (ZMH...) RD 2 cooling-air fan

120 ZMH-..
Ø90

l13 l14
Type DN l1 l2 l3 l4 l5 l6 l7 l8 l9 l10 l11 l12 l13 l14 h1 h2 h3
WK.. 40 65 388 116 116 313 340 140 226 336 264 368 452 1046 231 255 444 384 400
WK.. 50 80 528 158 158 373 404 165 270 403 370 495 452 1212 258 311 518 464 540
WK.. 70 100 730 188 313 454 466 205 418 548 500 630 650 1689 300 360 628 589 700
WK.. 80 150 1023 368 522 486 524 283 556 670 556 670 697 2124 393 410 708 741 850

Weishaupt reserve the right to make changes in light of future developments. Additional burner dimensions and oil-side connection details are available on request.

30
Heat-exchanger mounting
Typ Ausf. d1 d2 d3 l15 1)
l15 WK.. 40/1 ZM(H) 250 280 290 260
60°-90° WK.. 40/2 ZM(H) 261 280 290 260
WK.. 40/2 ZM(H)-LN 296 280 290 424

WK.. 50/1 ZM(H)-NR/ZM(H)-1LN 290 380 390 307

WK.. 50/2 ZM(H)-NR 350 380 390 337
d1 d2 d3
WKG(L) 50/2 ZM(H)-1LN 350 380 390 452
WKL(MS) 50/1 ZM(H) 290 380 390 337
WKL(MS) 50/2 ZM(H) 350 380 390 392
WK.. 50/2 ZM(H)-1SF 350 380 390 337

The space between the combustion head and the refractory WK.. 70/1 ZM(H)-NR 400 518 530 347
should be filled with a resiliant, non-solid insulating material, WK.. 70/2 ZM(H)-NR 480 518 530 362
such as Cerafelt.
WK.. 70/3 ZM(H)-NR 480 518 530 462
WKG 70/1 ZM(H)-LN 406 518 530 457
Maintenance-friendly combustion head: WKG(L) 70/1 ZM(H)-1LN 406 518 530 439
On all burner versions, the standard-length combustion head can be inserted
WKG(L) 70/2 ZM(H)-LN/ZM(H)-1LN 480 518 530 477
and withdrawn through the service opening in the burner housing.
WKG(L) 70/1 ZM(H)-3LN 444 518 530 475
WKG(L) 70/3 ZM(H)-3LN 480 518 530 475
WK.. 70/1 ZM(H)-1SF 400 518 530 347
WK.. 70/2 ZM(H)-1SF 480 518 530 362
WKL(MS) 70/1 ZM(H) 400 518 530 417
WKL(MS) 70/2 ZM(H) 480 518 530 422

WK.. 80/3 ZM(H)-NR 590 590 640 500

WKG(L) 80/1 ZM(H)-3LN 540 558 640 510
WK.. 80/3 ZM(H)-1SF 600 600 640 480
WKG 80/4-5 ZM(H)-VSF 590 590 640 500
WKG 80/6 ZM(H)-VSF 618 618 650 500
1) Combustion head extension on application.

Mounting-plate drilling dimensions

Ø(412) Ø(560) Ø735 Ø875

360 490 Ø770
°

°
30

30
245
180

3 0°

3 0°
270
200

3 0°

3 0°

M12 M12 M16 ° M16 °

30 30

Ø290 Ø390 Ø530 Ø640 (WK80/3-5)

Ø650 (WK80/6)

WK 40 WK 50 WK 70 WK 80

31
Overview of options, installation
positions, and weights
Vertically firing Weishaupt burners have been
especially designed for use on vertical plant,
such as steam boilers, thermal fluid heaters,
Vertical execution
l18
and process applications.

Reliable operation: Safety-critical components

such as the gas butterfly valve, stepping motor, gas
shut-off valves, and gas pressure switches, are
securely located away from high-temperature
zones to ensure their reliable operation. The offset
position of the gas pilot valve protects it from high
levels of radiant heat from the heat exchanger.
133

h6
h4

l16
l19
Optional

l18

133

h5

h6

l17
Optional l20
Extended option (with accessory components)

32
Vertical-execution dimensions
Burner flange to butterfly Gas valve assembly
valve outlet DN DN l16 1) l17 l18 l19 1) l20 h4 h5 h6
WK.. 40 65 1 1/2" 492 686 641 841 2) 1035 2) 116 502 382
2" 492 686 641 881 2) 1075 2) 116 502 382
65 492 686 641 784 978 116 502 382
80 492 686 641 991 2) 1185 2) 124 510 382
100 - 686 641 - 1237 2) - 521 382
125 - 686 641 - 1317 2) - 533 382

WK.. 50 80 2" 469 801 697 858 2) 1190 2) 158 594 424
65 469 801 697 948 2) 1280 2) 165 601 424
80 469 801 697 781 1113 158 594 424
100 469 801 697 1030 2) 1362 2) 169 605 424
125 469 801 697 1105 2) 1437 2) 181 617 424

WK.. 70 100 65 589 1001 760 1080 2) 1492 2) 207 723 579
80 589 1001 760 1110 2) 1522 2) 199 715 579
100 589 1001 760 941 1353 188 704 579
125 589 1001 760 1227 2) 1639 2) 201 717 579
150 589 1001 760 1320 2) 1732 2) 215 731 579

WK.. 80 150 100 522 976 815 1123 2) 1577 2) 395 1121 788
125 522 976 815 1176 2) 1630 2) 382 1108 788
150 522 976 815 1004 1458 368 1094 788

1) Including horizontal intermediate flange (not shown) 2) Including concentric reducer (not shown)

Burner weights (kg)

WKG WKL WKMS WKGL WKGMS
WK.. 40 120 140 3) / 125 5) 165 3,4) / 130 5,6) 150 3) / 135 5) 170 3,4) / 140 5,6)
WK.. 50 165 160 165 165 170
WK.. 70 290 290 300 310 320
WK.. 80 440 420 430 460 470

3) Burner-mounted oil pump 4) Burner-mounted oil preheater 5) Separate oil pump 6) Separate oil preheater

Combustion-air fan: housing arrangement

Type L 90 Type L 180 Type L 270 Type L 360

Type R 90 Type R 180 Type R 270 Type R 360

Viewed from the drive-side of the fan.

33
Combustion test chamber at the
Schwendi Research & Development Institute

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 Max Weishaupt GmbH
88475 Schwendi
Tel +49 7353 830
Fax +49 7353 83358
www.weishaupt.de

Print No. 83213002, March 2014

Printed in Germany. All rights reserved.

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