Weishaupt W-FM 50 Supplement
X3-03 X3-05 X6-03 X4-02 X7-02 X9-04 X5-01 X5-02
BC
X56
X92CO X54FUEL X53
VSD X74
X64
AIR
LMV27.210A2WH
1P
Siemens Building Technologies
HVAC Products GmbH
Made in Germany
230 VAC
50 or 60 Hz
-20C to + 60C
- 4 F to +140 F
CE-xxxxxxxxxxxxx
Rg.xxxxxxxxxxxxxx
Refer to data sheet 7543
W-FM5
P
Best.-Nr.: 600402
S
Geräte-Nr.: 0503020021
VDE
DIN
FM
SIEMENS
FUSE 1
T6.3 IEC 60127-2/V
X3-04X7-01X8-02X8-04X5-03X3-02X10-06X10-05
X75 PE N L
111111111
PE
L
X8-02
•
N
V1
PE
N
LV2
X7-01
X3-0
VOLTAGE
LINE
SAFETY
LOOP
L
PE
N
L
FLAMEQRB/
QRB/C-
L
PE
ION
X10-05
COUNTER U
X75
FUEL
P air
L
X3-02X10-06
QRA
QRA
+
L
ON/OFF
X5-03
2
3
L
X8-0
OPERATION
RESET
PE
L
X9-04
PE
N
L
X7-02
V3/PV
PE
P
min
L
X5-01
P min
PE
N
L
X4-02
IGNITION
FLANGE
L
X3-03
L
L
L
X3-0
MOTO
ALARM
MOTOR
PE
N
L
X6-03
SV
PE
P
max
L
X5-02
P max/POC
P
LT
P LT
VSD esc
info
F – +A
S
P
V
i
h s %min
Installation and operating instruction
Combustion Manager W-FM 50 83250302 1/2018-08
Installation and operating instruction
Combustion Manager W-FM 50
83250302 1/2018-08 La 2-112
1 User instructions..............................................................................................................5
1.1 Target group.................................................................................................................. 5
1.2 Symbols.......................................................................................................................... 5
1.3 Guarantee and Liability............................................................................................... 6
2 Safety .....................................................................................................................................7
2.1 Designated application............................................................................................... 7
2.2 When gas can be smelled......................................................................................... 7
2.3 Safety measures........................................................................................................... 7
2.3.1 Normal operation...................................................................................................7
2.3.2 Electrical connection............................................................................................7
2.3.3 Gas supply..............................................................................................................8
2.4 Alterations to the construction of the equipment ................................................. 8
2.5 Noise emission ............................................................................................................. 8
2.6 Disposal ......................................................................................................................... 8
3 Product description ........................................................................................................ 9
3.1 Function.......................................................................................................................... 9
3.1.1 Burner Control.......................................................................................................9
3.1.2 Low gas programme.............................................................................................9
3.1.3 Valve proving....................................................................................................... 10
3.1.4 Variable speed drive.......................................................................................... 10
3.1.5 Calculation........................................................................................................... 11
3.1.6 Data backup ........................................................................................................ 11
3.1.7 Referencing the actuator.................................................................................. 12
3.1.8 Program sequence............................................................................................. 13
3.1.8.1 Operating phase..........................................................................................13
3.1.8.2 Gas direct ignition.......................................................................................14
3.1.8.3 Gas with ignition pilot valve ......................................................................15
3.1.8.4 Fuel oil EL modulating and multi-stage, heavy oil multi-stage ..........16
3.1.8.5 Medium and heavy oil modulating ...........................................................17
3.2 Inputs ............................................................................................................................18
3.2.1 Voltage supply .................................................................................................... 18
3.2.2 Safety circuit........................................................................................................ 18
3.2.3 Reset..................................................................................................................... 18
3.2.4 Air pressure switch............................................................................................ 18
3.2.5 Minimum pressure switch................................................................................. 19
3.2.6 Max. pressure switch......................................................................................... 19
3.2.7 Valve proving gas pressure switch ................................................................ 20
3.2.8 Heavy oil immediate start ................................................................................. 20
3.2.9 Flame sensor....................................................................................................... 21
3.2.10 Load controller analogue input..................................................................... 22
3.2.11 Load controller building management ........................................................ 22
3.2.12 Load controller via contacts.......................................................................... 23
3.2.13 Fuel Meter ......................................................................................................... 23
3.3 Outputs ........................................................................................................................24
3.3.1 Alarm..................................................................................................................... 24
3.3.2 Motor..................................................................................................................... 24
3.3.3 Ignition .................................................................................................................. 24
3.3.4 Frequency converter.......................................................................................... 24
Installation and operating instruction
Combustion Manager W-FM 50
83250302 1/2018-08 La 3-112
3.3.5 Analogue output................................................................................................. 25
3.4 Technical data.............................................................................................................26
3.4.1 Electrical data ..................................................................................................... 26
3.4.2 Ambient conditions............................................................................................ 26
3.4.3 Dimensions.......................................................................................................... 27
4 Installation ........................................................................................................................ 28
4.1 Electrical connection.................................................................................................28
5 Operation .......................................................................................................................... 30
5.1 Operating interface....................................................................................................30
5.1.1 Operating panel.................................................................................................. 30
5.1.2 Display .................................................................................................................. 31
5.2 Displaying and adjusting parameters ....................................................................33
5.2.1 Password ............................................................................................................. 34
5.2.2 Manual load ......................................................................................................... 35
5.3 Parameters ..................................................................................................................36
5.3.1 Password level.................................................................................................... 36
5.3.2 Info level ............................................................................................................... 44
5.3.3 Service level ........................................................................................................ 45
6 Commissioning.............................................................................................................. 46
6.1 Prerequisite .................................................................................................................46
6.2 Adjusting the burner..................................................................................................46
6.2.1 Adjusting gas side ............................................................................................. 47
6.2.2 Adjust modulation oil side................................................................................ 61
6.2.3 Adjust multi-stage oil side................................................................................ 75
6.3 Check combustion.....................................................................................................86
6.4 Calculate gas throughput.........................................................................................87
7 Servicing............................................................................................................................ 88
7.1 Notes on servicing.....................................................................................................88
7.2 Service plan.................................................................................................................89
8 Troubleshooting ............................................................................................................ 90
8.1 Procedures for fault conditions...............................................................................90
8.1.1 Display OFF......................................................................................................... 90
8.1.2 Display OFF S..................................................................................................... 90
8.1.3 Fault....................................................................................................................... 91
8.1.4 Lockout................................................................................................................. 91
8.2 Fault history .................................................................................................................92
8.3 Rectifying faults..........................................................................................................94
9 Technical documentation.......................................................................................102
9.1 Frequency converter............................................................................................... 102
9.1.1 Frequency converter Nord size I … III.........................................................102
9.1.2 Frequency converter Nord size IV ................................................................104
Installation and operating instruction
Combustion Manager W-FM 50
83250302 1/2018-08 La 4-112
10 Spares...............................................................................................................................106
11 Notes .................................................................................................................................108
12 Key word index ............................................................................................................109
Installation and operating instruction
Combustion Manager W-FM 50
1 User instructions
83250302 1/2018-08 La 5-112
1 User instructions
Translation of original
operating instructions
This manual forms part of the equipment and must be kept on site.
Carefully read the manual prior to working on the unit.
1.1 Target group
The manual is intended for the operator and qualified personnel. They should be
observed by all personnel working with the unit.
Work on the unit must only be carried out by personnel who have the relevant train-
ing and instruction.
Persons with limited physical, sensory or mental capabilities may only work on the
unit if they are supervised or have been trained by an authorised person.
Children must not play with the unit.
1.2 Symbols
DANGER
Immediate danger with high risk.
Non observance can lead to serious injury or death.
WARNING
Danger with medium risk.
Non observance can lead to environmental damage,
serious injury or death.
CAUTION
Danger with low risk.
Non observance can cause damage to the equip-
ment and injury to personnel.
Important information
Requires direct action
Result after an action
Itemisation
… Range of values
Installation and operating instruction
Combustion Manager W-FM 50
1 User instructions
83250302 1/2018-08 La 6-112
1.3 Guarantee and Liability
Guarantee and liability claims for personal and equipment damage are excluded, if
they can be attributed to one or more of the following causes:
non approved application,
non-observance of the manual,
operation with faulty safety equipment,
continual operation despite a fault,
improper installation, commissioning, operation and service,
repairs, which have been carried out incorrectly,
the use of non original Weishaupt parts,
force majeure,
unauthorised modifications made to the unit,
the installation of additional components, which have not been tested with the
unit,
the installation of combustion chamber inserts, which impede full flame forma-
tion,
unsuitable fuels,
defects in the inlet lines.
Installation and operating instruction
Combustion Manager W-FM 50
2 Safety
83250302 1/2018-08 La 7-112
2 Safety
2.1 Designated application
The combustion manager W-FM 50 is suitable for use with single fuel burners.
Improper use could:
endanger the health and safety of the user or third parties,
cause damage to the unit or other material assets.
2.2 When gas can be smelled
Avoid open flames and spark generation, for example:
do not operate light switches,
do not operate electronic equipment,
do not use mobile telephones.
Open doors and windows.
Close gas isolating valve.
Warn the inhabitants, do not ring door bells.
Leave the building.
Inform the heating contractor or gas supplier from outside of the building.
2.3 Safety measures
Safety relevant fault conditions must be eliminated immediately.
Components, which show increased wear and tear or whose design lifespan is or
will be exceeded prior to the next service should be replaced as a precaution.
The design lifespan of the components is listed in the service plan [ch.7.2].
2.3.1 Normal operation
All labels on the unit must be kept in a legible condition.
Stipulated settings, service and inspection work should be carried out at regular
intervals.
Only operate the unit with its cover closed.
Do not touch moving parts during operation.
Do not touch the oil carrying parts of medium and heavy oil burners during oper-
ation.
2.3.2 Electrical connection
For work carried out on live components:
Observe the accident prevention instructions DGUVRegulation3 and adhere to
local directives,
tools in accordance with EN 60900 should be used.
Installation and operating instruction
Combustion Manager W-FM 50
2 Safety
83250302 1/2018-08 La 8-112
2.3.3 Gas supply
Only the gas supply company or an approved agent may carry out installation, al-
teration and maintenance work on gas appliances in buildings and properties.
Pipework must be subject to a combined load and valve proving test and/or us-
ability testing relative to the pressure range intended, e. g. DVGW-TRGI, work-
sheet G 600.
Inform the gas supply company about the type and size of plant prior to installa-
tion.
Local regulations and guidelines must be observed during installation, e. g.
DVGW-TRGI, worksheet G 600; TRF Band 1 and Band 2.
The gas supply pipework should be suitable for the type and quality of gas and
should be designed in such a way that it is not possible for liquids to form, e. g.
condensate. Observe vaporisation pressure and vaporisation temperature of li-
quid petroleum gas.
Use only tested and approved sealing materials, whilst observing all process in-
formation.
Re-commission the appliance when changing to a different type of gas.
Carry out soundness test after each service and fault rectification.
2.4 Alterations to the construction of the equipment
All conversions require written approval from Max Weishaupt GmbH.
No additional components may be fitted, which have not been tested for use
with the equipment.
Do not use combustion chamber inserts, which hinder flame burnout.
Use only original Weishaupt replacement parts.
2.5 Noise emission
The noise emissions are determined by the acoustic behaviour of all components
fitted to the combustion system.
Prolonged exposure to high noise levels can lead to loss of hearing. Provide oper-
ating personnel with protective equipment.
Noise emissions can further be reduced with a sound attenuator.
2.6 Disposal
Dispose of all materials and components in a safe and environmentally friendly way
at an authorised location. Observe local regulations.
Installation and operating instruction
Combustion Manager W-FM 50
3 Product description
83250302 1/2018-08 La 9-112
3 Product description
3.1 Function
3.1.1 Burner Control
A burner control for oil and gas burners is integrated in the combustion manager.
It controls the sequence of operation, monitors the flame and communicates with all
components.
3.1.2 Low gas programme
The low gas pressure switch monitors the gas connection pressure from operating
phasePh22. If the gas pressure set at the low gas pressure switch is not
achieved, the combustion manager initiates a safety shutdown and starts the low
gas programme.
In the low gas programme the combustion manager carries out a safety shutdown
and initiates a restart after the low gas waiting time (10 seconds). This low gas
waiting time doubles after every unsuccessful start attempt. If the start attempts ex-
ceed the repetition limit value (parameter 223) the combustion manager goes to
lockout. The repetition counter and the low gas waiting time are automatically reset
when the burner starts.
Installation and operating instruction
Combustion Manager W-FM 50
3 Product description
83250302 1/2018-08 La 10-112
3.1.3 Valve proving
The valve proving gas pressure switch checks if the valves are tight. It signals the
combustion manager if the pressure increases or decreases to an impermissible
level during valve proving.
Valve proving is carried out automatically by the combustion manager:
after every controlled shutdown,
prior to burner start following lockout or power outage.
1. Test phase (function sequence for valve proving valve1):
Valve1 remains closed, valve2 opens,
the gas escapes and the pressure between valve1 and valve2 reduces,
valve 2 closes again,
both valves remain closed for 10 seconds.
If the pressure increases to above the value set during these 10 seconds, valve1 is
leaking. The combustion manager initiates a controlled shutdown.
2. Test phase (function sequence for valve proving valve2):
Valve 1 opens, valve 2 remains closed,
pressure between valve1 and valve2 increases,
valve 1 closes again,
both valves remain closed for 10 seconds.
If the pressure decreases to below the value set during these 10 seconds, valve2
is leaking. The combustion manager initiates a controlled shutdown.
V1
V2
P
P
3 s 10 s 10 s3 s
80 81 82 83
12
4
1
2
3
4
5
1Valve 1
2Valve 2
3Pressure between valve 1 and valve 2
4Valve proving gas pressure switch
5Operating phases
3.1.4 Variable speed drive
Via an analogue output, the W-FM controls the frequency converter of the fan mo-
tor and matches the speed to the burner capacity. This reduces electrical con-
sumption.
The speed and the rotation direction are monitored by an inductive proximity switch
and an asymmetrical transmitter disc.
Installation and operating instruction
Combustion Manager W-FM 50
3 Product description
83250302 1/2018-08 La 11-112
3.1.5 Calculation
A calculation can be triggered in modulating commissioning, if P1 and P9 are pro-
grammed. During a calculation, a straight line is generated from the operating point
displayed to P1 or P9. The values on the straight are adopted as the new operating
points.
Initiate a calculation after P9: Press and hold[+] key for 3…5seconds.
Initiate a calculation after P1: Press and hold[–] key for 3…5seconds.
If during commissioning only P1 and P9 are programmed, the combustion manager
initiates an automatic calculation when exiting P1 and calculates P2 to P8.
P1
P2
P3
P4
P5
P6
P7
P8
P9
P1
P2
P3
P4
P5
P6
P7
P8
P9
1 2
1Automatic calculation
2Calculation from P5 to P9
3.1.6 Data backup
In the ABE, the settings of the combustion manager can be saved via para-
meter050 (Backup). If the unit needs to be replaced, or if the parameters have
unintentionally been altered, the data can be transferred back to the combustion
manager.
Data transfer (Restore) from ABE to the combustion manager is only possible if the
burner data is identical [ch.5.3].
WARNING
Soot and CO formation because no combustion analysis has been carried
out.
At heat demand, the burner starts automatically approx. 30seconds after the data
transfer (Restore).
Directly following the data transfer (Restore):
Check sequence of operation.
Carry out a combustion analysis at all load point.
Only in conjunction with frequency converter
Following data transfer (Restore) a speed standardisation with subsequent adjust-
ment must be carried out.
Installation and operating instruction
Combustion Manager W-FM 50
3 Product description
83250302 1/2018-08 La 12-112
3.1.7 Referencing the actuator
In operating phasePh10 (Home Run) the combustion manager references the
actuators, whereby the actuator drives over a reference marker. The actuator then
drives back and determines the inner edge of the reference marker. All settings are
referenced to this position.
The combustion manager references the fuel actuators to the reference
markerOPEN and the air actuator to the reference markerCLOSED. The setting
range of the air damper shaft is limited mechanically, therefore the air actuator can-
not drive to reference markerOPEN.
If the actuators have been mixed up, a reference fault is identified (fault code85).
0° -8°
-6°
90°
112° 108°
1
3
4
2
1Reference range CLOSED
2Reference marker CLOSED (air actuator)
3Reference range OPEN
4Reference marker OPEN (fuel actuator)
Installation and operating instruction
Combustion Manager W-FM 50
3 Product description
83250302 1/2018-08 La 13-112
3.1.8 Program sequence
3.1.8.1 Operating phase
Ph00 Lockout phase
Ph02 Safety phase
Ph10 Home run
Ph12 Standby
Ph22 Fan / safety valve ON
Ph24 Pre-purge position
Ph30 Pre-purge
Ph36 Ignition position
Ph38 Pre-ignition
Ph39 Test low gas pressure switch (fuel valve 1 opens, only with Gas)
Ph40 Fuel release
Ph42 Ignition OFF
Ph44 Flame Signal
Ph50 Flame stabilisation (only with Gas with pilot ignition)
Ph52 Ignition pilot valve OFF (only with Gas with pilot ignition)
Ph60 Operating setting 1
Ph62 Operating setting 2
Ph70 Post burn time
Ph72 Post-purge position
Ph74 Post-purge
Ph78 Post-purge
Ph80 Venting valve train (only during valve proving)
Ph81 Test without pressure (only during valve proving)
Ph82 Fill valve train (only during valve proving)
Ph83 Test with operating pressure (only during valve proving)
Ph90 Low gas waiting time
Installation and operating instruction
Combustion Manager W-FM 50
3 Product description
83250302 1/2018-08 La 14-112
3.1.8.2 Gas direct ignition
X3-03:1, X3-04:1
X5-03:1
X10-05:2
X3-02:1
X5-01:2
X9-04:2
X3-05:1
X4-02:3
X6-03:3
X8-02:1
X7-01:3
X5-02:2
90838281807874727062424039383630242212100200 6044
1
2
3
4
5
6
7
8
9
0
q
w
e
Signal at input / output actuated
No signal on input
Input without influence
1Operating phases
2Safety circuit
3Heat demand controller
4Flame Signal
5Air pressure switch
6Minimum pressure switch
7Max. pressure switch
8Valve proving pressure switch
9Fan motor
0Ignition unit
qSafety valve
wFuel valve 1
eFuel valve 2
Installation and operating instruction
Combustion Manager W-FM 50
3 Product description
83250302 1/2018-08 La 15-112
3.1.8.3 Gas with ignition pilot valve
908382818074 7872706260444240383630242212100200 5250
X5-03:1
X10-05:2
X3-02:1
X5-01:2
X9-04:2
X3-05:1
X4-02:3
X6-03:3
X8-02:1
X7-01:3
X7-02:3
X5-02:2
X3-03:1, X3-04:1
1
2
3
4
5
6
7
8
9
0
q
w
e
r
Signal at input / output actuated
No signal on input
Input without influence
1Operating phases
2Safety circuit
3Heat demand controller
4Flame Signal
5Air pressure switch
6Minimum pressure switch
7Max. pressure switch
8Valve proving pressure switch
9Fan motor
0Ignition unit
qSafety valve
wFuel valve 1
eFuel valve 2
rIgnition pilot valve
Installation and operating instruction
Combustion Manager W-FM 50
3 Product description
83250302 1/2018-08 La 16-112
3.1.8.4 Fuel oil EL modulating and multi-stage, heavy oil multi-
stage
X3-03:1, X3-04:1
X5-03:1
X10-05
X3-02:1
X5-02:2
X3-05:1
X4-02:3
X6-03:3
X8-02:1
X7-01:3
X7-02:3
X5-01:2
74 7872706260444240383630242212100200
(1
(2
1
2
3
4
5
6
7
8
9
0
q
w
e
(1 Only with heavy oil and long pre-ignition phase (parameter 281).
(2 Only with operating mode12 (oil modulating).
Signal on input / output activated
No signal on input
Input without influence
1Operating phases
2Safety circuit
3Heat demand controller
4Flame Signal
5Air pressure switch
6Minimum pressure switch
7Max. pressure switch
8Fan motor
9Ignition unit
0Safety valve
qFuel valve 1
wFuel valve 2
eFuel valve 3
Installation and operating instruction
Combustion Manager W-FM 50
3 Product description
83250302 1/2018-08 La 17-112
3.1.8.5 Medium and heavy oil modulating
X5-01:2
X5-03:1
X3-04:1
X10-05
X3-02:1
X5-02:2
X9-04:2
X3-05:1
X4-02:2
X6-03:2
X8-02:1
X7-01:2
X7-02:2
74 7872706260444240383630242212100200
(1
1
2
3
4
5
6
7
8
9
0
q
w
e
r
(1 Only for evaluation in operating phase PH38…PH62 (para-
meter286).
Signal on input / output activated
No signal on input
Input without influence
1Operating phases
2Safety circuit
3Heat demand controller
4Flame Signal
5Air pressure switch
6Minimum pressure switch
7Max. pressure switch
8Heavy oil immediate start
9Fan motor
0Ignition unit
qSafety valve
wFuel valve 1
eFuel valve 2
rFuel valve 3
Installation and operating instruction
Combustion Manager W-FM 50
3 Product description
83250302 1/2018-08 La 18-112
3.2 Inputs
3.2.1 Voltage supply
1
2
3
4
5
X3-04
PE
N
L
L
PE
N
L
The voltage supply is connected to inputsX3-04:3-5.
The mains frequency is set in parameter 125.
3.2.2 Safety circuit
1
2
3
4
5
X3-04
PE
N
L
L
1
2
X3-03
L
In the diagnostic code, the inputsX3-03:1/2 and X3-04:1/2 are combined as
safety circuit. If one of the inputs is open the W-FM carries out at least one safety
shutdown. If the repetition value is exceeded an open input leads to lockout.
The repetition value can be set in parameter 215.
At inputX3-04:1/2 all external components of the safety circuit are switched in se-
quence, these include:
Emergency-Off switch
Safety time limiter (STL)
Low water safety interlock, etc.
The burner flange limit switch is connected to inputX3-03:1/2.
3.2.3 Reset
1
2
3
4
5
X3-04
PE
N
L
L
PE
N
L
1
2
X8-04
RESET
OPERATION
1
2
3
X3-05
MOTOR
ALARM
MOTOR CONT
(1 (2
A reset button can be connected to inputX8-04:1. Pressing this button in lockout
for 1…6 seconds will reset the combustion manager. Pressing the button for a
longer or shorter period will be ignored by the combustion manager and therefore
has no effect.
With lockout function(1
If the push button is also required for manual lockout, it must be connected to
mains inputX3-04:5(L). If the combustion manager is in an operating phase,
pressing the push button for 1 to 6 seconds will initiate a manual lockout.
Without lockout function(2
If the push button is not required to carry out manual lockout it must be connected
to alarm outputX3-05:2.
3.2.4 Air pressure switch
1
2
X3-02
L
P
The closing contact of the air pressure switch is connected input X3-02. If the sig-
nal is missing once the fan has started, the combustion manager initiates a lockout.
The air pressure switch must have been deactivated, contact open, prior to the fan
starting.
Installation and operating instruction
Combustion Manager W-FM 50
3 Product description
83250302 1/2018-08 La 19-112
3.2.5 Minimum pressure switch
1
2
3
X5-01
L
PE P
min
The closing contact of the min. pressure switch is connected to input X5-01.
For burners without min. oil pressure switch, a bridge has to be connected to ter-
minal 2 and terminal 3.
Low gas pressure switch
In gas operation, the combustion manager expects a signal at input X5-01:2 from
operating phase Ph22 . If the pressure drops below the value set, the pressure
switch contact opens and the combustion manager starts the low gas programme
[ch.3.1.2].
Minimum oil pressure switch
In oil operation, the combustion manager expects a signal at inputX5-01:2 from
operating phase Ph38 or operating phase Ph40 (depending on para-
meter276). If the pressure drops below the value set, the pressure switch contact
opens and the combustion manager initiates a lockout. Lockout occurs in operating
phase Ph38 (pre-ignition) after a delay of 30 seconds. In all subsequent phases,
lockout occurs immediately.
3.2.6 Max. pressure switch
1
2
3
X5-02
L
PE
min P
The opening contact of the max. pressure switch is connected to inputX5-02.
For burners without max. oil pressure switch, a bridge has to be connected to ter-
minal 2 and terminal 3.
High gas pressure switch
The combustion manager expects a signal at inputX5-02:2 from operating
phasePh40. If the value set at the pressure switch is exceeded, the pressure
switch contact opens and the combustion manager initiates a lockout.
Maximum oil pressure switch
The combustion manager expects a signal at inputX5-02:2 from operating
phasePh22 . If the value set at the pressure switch is exceeded, the pressure
switch contact opens and the combustion manager initiates a lockout. Lockout oc-
curs in operating phasePh22 (fanON) after a delay of 30seconds. In all sub-
sequent phases, lockout occurs immediately.
Installation and operating instruction
Combustion Manager W-FM 50
3 Product description
83250302 1/2018-08 La 20-112
3.2.7 Valve proving gas pressure switch
1
2
3
X9-04
L
PE
min P
The opening contact of the valve proving gas pressure switch is connected to in-
putX9-04. InputX9-04 is only activated during valve proving [ch.3.1.3]. The time
of valve proving can be set in parameter241 .
If the pressure set is not achieved in operating phasePh81 (test without pres-
sure), the contact closes.
If the pressure set is exceeded in operating phasePh83 (test with operating
pressure), the contact opens.
3.2.8 Heavy oil immediate start
1
2
3
X9-04
L
PE
min
The input is only activates for the return flow temperature sensor on heavy oil burn-
ers. The release contact of the return flow temperature sensor is connected to in-
putX9-04.
In modulating heavy oil operation, the combustion manager carries out a nozzle cir-
culation for maximum 45seconds. If the signal is present at X9-04 before this time
has elapsed, the nozzle circulation is shortened accordingly. If the signal is missing
after this time has elapsed, the combustion manager initiates a home run with sub-
sequent repetition.
During operation, the signal is monitored according to the setting of para-
meter286.
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