elco VECTRON G 1.85 Operating Instructions Manual

elco
Brand
elco
Model
VECTRON G 1.85
Type
Operating Instructions Manual

This manual is also suitable for

01/2009 - Art. Nr. 4200 1016 3900A
Bedieningshandleiding
Voor de gespecialiseerde vakman
Aangeblazen gasbrander...................... 2-17
Operating instructions
For specialist installation engineers
Gas burners ......................................... 18-33
VECTRON G 1.40
VECTRON G 1.55
VECTRON G 1.85
de, fr, it................................. 4200 1015 8200
nl
en
............................................. 4200 1016 3800
01/2009 - Art. Nr. 4200 1016 3900A18
Overview
Contents
Page
Overview Contents.................................................................. 18
Important notes....................................................... 18
Burner description................................................... 19
Operation Gas train VR4625 / MB-DLE407............................. 20
Automatic combustion control unit.......................... 21
Allocation chart, connection socket......................... 22
Operation, safety functions ..................................... 23
Assembly Burner assembly, burner installation position ......... 24
Gas connection, installation location....................... 24
Liquefied Petroleum Gas, electrical connection ..... 25
Commissioning Checks before commissioning ................................ 26
Ionisation current measurement ............................. 26
Adjustment data, air regulation ............................... 27
Setting the VR4625 compact gas unit..................... 28
Setting the MB-DLE407 compact gas unit .............. 29
Setting the air pressure switch................................ 30
Setting the gas pressostat, operating check ........... 30
Service Maintenance ........................................................... 31
Troubleshooting ...................................................... 32
Maintenance frequency indicator ............................ 33
Important notes
VECTRON G1.40/55/85 burners are
designed for the low-pollutant
combustion of natural gas and Liquefied
Petroleum Gas. The design and function
of the burners comply with standard
EN676. They are suitable for use with all
heat generators complying with EN 303
or for use with hot air generators
complying with DIN 4794, and DIN
30697 within their respective
performance range. Use for any other
application requires the approval of
ELCO. Assembly and commissioning
must be carried out only by authorised
specialists and all applicable guidelines
and directives must be observed.
Burner description
The VECTRON G1.40/55/85 are single-
stage, fully automatic, monoblock type
burners. The special design of the
burner head provides low-polluting
combustion with high efficiency. In line
with testing as defined by EN676, the
values comply with emissions class 3 -
the most stringent standard - and also
fulfils the requirements of national
environmental legislation:
AT: KFA 1995, FAV 1997
CH: LRV 2005
DE: 1.BImSChV
NL: EN676, emission class 3
Emissions values may differ, depending
on combustion chamber dimensions,
combustion chamber load and the firing
system (three-pass boilers, U-fired
boilers). For specifying warranty values,
the conditions for the measuring
equipment, tolerances and humidity
must be observed.
Scope of delivery
The burner packaging also contains:
1 gas connection flange
1 compact gas train with gas filter
1 Burner flange with insulation
1 bag containing installation fittings
1 bag containing Technical
Documentation
The following standards should be
observed in order to ensure safe,
environmentally sound and energy-
efficient operation:
EN 676
Forced-draught gas burners
EN 226
Connection of vaporising oil and forced-
draught gas burners to the heat
generator
EN 60335-2
Safety of electrical equipment for
domestic use
Gas lines
When routing gas lines and trains,
observe the general installation
regulations and directives as well as
national guidelines:
CH: - SVGW gas directives G1
- EKAS Form.1942 Liquefied
Petroleum Gas- directive, part 2
- Regulations on cantonal
instances (e.g. fire department
regulations)
DE: - DVGW-TVR/TRGI
Place of installation
The burner must not be used in rooms
exposed to aggressive vapours (e.g.
hairspray, tetrachloroethylene or carbon
tetrachloride), large amounts of dust, or
high levels of air humidity (e.g. in laundry
rooms). An air inlet must be present
with:
DE: up to 50 kW: 150 cm
2
per additional kW: + 2.0 cm
2
CH: QF [kW] x 6= ...cm
2
; but at least
200 cm
2
.
Variations may arise as a result of local
regulations.
We can accept no warranty liability
whatsoever for loss, damage or injury
caused by any of the following:
- Inappropriate use.
- Incorrect assembly or repair by the
customer or any third party, including
the fitting of non-original parts.
Provision of the system and the
operating instructions
The firing system manufacturer must
supply the operator of the system with
operating and maintenance instructions
on or before final delivery. These
instructions should be displayed in a
prominent location at the point of
installation of the heat generator, and
should include the address and
telephone number of the nearest
customer service centre.
Notes for the operator
The system should be inspected by a
specialist at least once a year. It is
strongly recommended to take out a
service contract to guarantee regular
servicing.
Declaration of conformity
for forced draught gas burners
We, as the factory accredited with
no. AQF030,
F-74106 ANNEMASSE Cedex
declare under our sole responsibility
that the products
VECTRON G1.40
VECTRON G1.55
VECTRON G1.85
comply with the following standards:
EN 50165
EN 60335
EN 60555-2
EN 60555-3
EN 55014
EN 676
Belgian royal decree dated 08/01/2004
These products bear the CE mark in
accordance with the stipulations of the
following European Directives
90/396/EEC Gas pressure device
guidelines
89/336/EEC EMC directive
2006/95/EC Low Voltage Directive
92/42/EEC Efficiency directive
These products bear the CE marking.
Annemasse, 1st October 2008
Mr SPONZA
01/2009 - Art. Nr. 4200 1016 3900A 19
Overview
Burner description
A1 Control and safety unit
A4 Display
B10 Ionisation bridge
F6 Air pressure switch
GP Sealing washer for Liquefied
Petroleum Gas
M1 Electric motor
pL Air pressure nipple
T1 Ignition transformer
3 Gas train connecting flange
5 Fastening screws for equipment plate
7 Securing device (service)
8 Housing
9 Electrical connection (covered)
14 Release knob
15 Gas head adjusting screw
16 Cover
17 Burner connecting flange
18 Burner tube
103B Air regulation
113 Air intake box
en
01/2009 - Art. Nr. 4200 1016 3900A20
Function
Gas train VR4625 / MB-DLE 407
The compact unit VR4625 with
integrated gas pressure regulation is
suitable for the operation of single-stage
forced-draught gas burners.
The compact gas train is registered
under the no.: CE-0063AP3090
Technical specifications
Inlet pressure 15-60 mbar
Ambient temperature 0 to +60 °C
Voltage 230 V / 50 Hz
Power consumption 19 W
Protection level IP40
Gas connection Rp 1/2"
Operation
When voltage is applied to the magnet
coils, valve Y12 and valve Y13 open.
The valve seating is protected against
contamination by an upstream fine
screen. The installed pressure regulator
controls the desired outlet pressure.
The required adjustment values for:
- Gas pressostat
- Gas pressure regulator
- Initial gas pressure (MB-DLE407)
can be set using the adjusting screw.
Inlet and outlet pressure can be
measured at the measuring nipples.
F4 Pressure switch (adjusting
screw under the cover)
Y12 Safety valve
Y13 Main valve
2 Valve electrical connection
8 Inlet flange
9 Pressure switch electrical
connection
104/C Setting screw for pressure
regulator
106 Gas screen
119 Measuring nipple for gas inlet
119.1 Measuring nipple for gas
pressure in valve space
119pBr Measuring nipple for gas outlet
VR4625
MB-DLE 407
The compact unit with integrated MB-
DLE 407 gas pressure regulation is
suitable for the operation of single-stage
forced-draught gas burners.
The compact gas train is registered
under the no.: CE-0085AP3156
Technical specifications
Inlet pressure 13-360 mbar
Ambient temperature -15 to +60 °C
Voltage 230 V / 50 Hz
Power consumption 46 W
Protection level IP54
Gas connection Rp 3/4"
01/2009 - Art. Nr. 4200 1016 3900A 21
Function
Automatic control unit TCG 1xx
Pressing and
holding the R
button for ...
... leads to ...
… 1 second... Unlocking of the
control unit
... 2 seconds.... Locking of the
control unit
... 9 seconds.... Clearance of control
unit statistics
The TCG 1xx automatic gas combustion
control unit controls and monitors the forced-
draught burner. The microprocessor-
controlled programme sequence ensures
maximum stability of time periods, regardless
of fluctuations in the power supply or ambient
temperature. The automatic combustion
control unit is designed to cope with
brownouts, guaranteeing system operation
even in the event of extreme power failures.
Whenever the supply voltage drops below its
rated minimum level, the control unit shuts
down - even in the absence of a malfunction
signal. The control unit switches itself back on
again once the voltage has returned to
normal levels.
Locking and unlocking the system
The control unit can be locked (switched to
malfunction) and unlocked (malfunction
cleared) by pressing the R reset button,
provided the system is connected to the
mains power supply.
Always disconnect the power supply
before installing or removing the
control unit. Do not attempt to open or
carry out repairs on the control unit.
A4 display
BP1 push-button 1
Request: fault code
BP2 push-button 2
Request: values
Symbol Designation
Waiting for heat request
Valve leak check
(by gas pressure measurement in valve space)
Waiting for air pressure switch during burner start
Burner motor on
Ignition transformer on
Flame present
Functional sequence phases:
1: No voltage
2: Power supply on, no heat request
3: Heat request, check air pressure switch
idle position
4: Motor on, check air pressure
5: First phase: sealing test
6: Test time 1 (valve space depressurised)
7: Second phase - valve check
8: Test time 2 (valve space filled)
9: Preventilation
9: Pre-ignition, activation of unauthorised
flame monitoring
10: Flame formation, safety period
11: Post-ignition time
12: Operation
13: Burner stop
14: Standby
enen
01/2009 - Art. Nr. 4200 1016 3900A22
Function
Allocation chart
Connection socket
Connector
no.
Terminal
Terminal
Connecto
r no.
Flame monitor
Remote
unlocking
Firing
Burner motor
Air pressure
switch
Gas pressostat L1 power supply
Malfunction light
Solenoid valve
Earth
Earth
Terminal Designation Connector no. Terminal Designation Connector no.
1 Flame monitor signal
11
14 Ignition transformer phase
5
2 Neutral 15 Neutral
3 Live 16 Burner motor phase
4
4 Remote release signal
20
17 Earth
5 Live 18 Neutral
6Live
8
19 Neutral
21
7 Gas pressostat signal 20 Fault display phase
8 Air pressure switch signal
10
21 Safety valve phase
1
9 Live 22 Neutral
10 Live
24
23 Earth
11 Earth 24 Main gas valve phase
12 Neutral 25 Earth
13 Earth
01/2009 - Art. Nr. 4200 1016 3900A 23
Function
Operating function
Safety function
Compact train
Note for Switzerland
A gas safety valve (item1) is to be
installed in the main gas inlet pipe in
accordance with SVGW gas guidelines.
Note for Germany
The draft combustion ordinance
requires that gas-fired installations be
equipped with a thermally triggered
shut-off valve (item1).
Description of functions
When the system is switched on for the
first time, after a power failure or safety
shutdown, after a lack of gas or after the
system has been out of operation for 24
hours, a sealing test is performed on the
gas valves with the blower motor
running before the burner is started.
After the leak check, the pre-ventilation
period of 24 seconds begins.
During pre-purge period
- Blower pressure is monitored.
- The combustion chamber is monitored
for flame signals.
At the end of the pre-purge period
- Ignition is switched on
- main and safety valve are opened
- burner starts
Monitoring
The flame is monitored by an ionisation
sensor. The sensor is insulated and
fitted to the gas head and is routed
through the baffle plate into the flame
zone. The sensor must not have any
electrical contact with earthed parts. The
burner switches to malfunction if a short
circuit occurs between the sensor and
the burner earth.
During burner operation, an ionised
zone is produced in the gas flame
through which a rectified current flows
from the sensor to the burner tip. The
ionisation current must be at least 8 µA.
Safety functions
- If no flame is produced when the
burner is started (gas release), the
burner will be switched off at the end
of the safety period, lasting no more
than 3 seconds, and the gas valve will
close.
- If the flame goes out during operation,
the gas supply is interrupted within
one second. A restart takes place.
Once the burner starts, operation is
continued. Otherwise, a safety
shutdown is triggered.
- If there is a lack of air during pre-
ventilation or operation, a safety
shutdown is triggered.
- If there is a lack of gas, the burner
does not begin operation or switches
off. A waiting time of 2 minutes
follows. This is followed by a further
start attempt. If there is still no gas
pressure, a further waiting time of 2
minutes follows. The waiting time can
only be reset by interrupting the power
supply to the burner.
Waiting times: 3 x 2 min, then 1 hour
In the event of controller shutdown
- Controller thermostat interrupts heat
request
- Gas solenoid valves close
- Flame goes out
- Blower motor runs on (14 sec)
- Valve leak check performed
- Burner motor switches off
- Burner is ready for operation
F4 Gas failure detection
F6 Air failure detection
Y13 Main solenoid valve
Y12 Safety solenoid valve
1 Thermally-triggered safety
shut-off valve (installation-
resident)
104 Gas pressure regulator
106 Screen
108 Gas ball valve (installation-
resident)
119pBr Measuring point for gas outlet
pressure
119.1 Measuring point for gas
pressure in valve space
119.2 Air pressure measuring point
enenen
01/2009 - Art. Nr. 4200 1016 3900A24
Assembly
Burner assembly
Burner installation position
Gas connection, installation location
Burner assembly
The burner flange 3 is equipped with
elongated holes and can be used with a
hole circle diameter of 150 - 170 mm.
These dimensions comply with EN 226.
The burner flange gasket and the
fastening screws are included with the
burner.
Sliding the pipe bracket
2
on the burner
pipe makes it possible to adjust the
installed depth of the combustion head to
the geometry of the combustion chamber
concerned. The installed depth remains
the same during fitting and removal.
Pipe bracket 2 secures the burner to the
connecting flange and therefore to the
boiler. This completely seals off the
combustion chamber.
Installation:
• Secure connecting flange 3 to the
boiler using screws 4
• Fit pipe bracket 2 to the burner pipe
and secure using screw 1. Tighten
screw 1 to a maximum torque of 6 Nm.
• Turn the burner slightly, guide it into
the flange and secure using screw 5.
Removal:
• Loosen screw 5.
• Turn the burner out and pull it out of
the flange.
Gas connection
The gas line diameter should be chosen
in such a way that the pressure losses
do not exceed 5 % of the distribution
pressure.
Gas train assembly
• Remove plugs on A, B and C.
• Check that ring seal J1 is present and
correctly fitted to flange C.
• Secure gas train on the right and left
(see below for other installation
locations).
VG1.40 shutter assembly
(see table opposite)
• Install the gas ball valve upstream of
the gas train.
Note
Allow sufficient space for access to the
different adjusting points. Bleed the gas
supply line thoroughly. Check all
connections for leaks.
Permissible installation locations for
gas valves
VG
1.40
Natural gas Shutter F
(metal)
Liquefied
Petroleum
Gas
Shutter F
(black)
Shutter
GP
VG
1.55
/85
Natural gas
Liquefied
Petroleum
Gas
Shutter
GP
01/2009 - Art. Nr. 4200 1016 3900A 25
Assembly
Liquefied Petroleum Gas operation
Electrical connection
VR4625
MB-DLE 407
Burner boiler electrical connection
The electrical installation and
connection work must only be carried
out by an authorised specialist.
All applicable rules and regulations must
be observed.
• Check to ensure that the power supply
voltage is as specified (230 V, 50 Hz)
• Burner fuse: 10 A.
The burner and heat generator are
connected by a 7-pin connector 1.
Compact burner unit electrical
connection
• The compact gas unit is connected via
two connectors prewired to the burner
terminal block.
• Connect connectors A and B to the
corresponding equipment connectors
on the compact gas unit and secure
using the screws.
Connector A: Gas pressostat
Connector B: gas valve
Main gas safety valve (Switzerland)
electrical connection
The gas safety valve (installation site) is
located on connector C.
Setting the ionisation probe and
ignition electrode
See diagram
Diagram 1:
Standard setting
Diagram 2:
Burner head setting for older heating
boilers with tendency toward CO
emissions
• Fit the two plates C between baffle
plate A and natural gas shutter D.
Liquefied Petroleum Gas operation
For operation with Liquefied Petroleum
Gas, it is necessary to replace the
natural gas shutter with a Liquefied
Petroleum Gas shutter secured to the
equipment plate.
To do so:
• Remove gas head (see Maintenance).
• Loosen baffle plate D and remove
natural gas shutter.
• Install Liquefied Petroleum Gas
shutter GP with stamp facing upwards
and screw on baffle plate tightly.
• Refit the gas head.
en
01/2009 - Art. Nr. 4200 1016 3900A26
Start up
Checks before start-up
Ionisation current measurement
Checks before start-up
Before commissioning the burner, the
following checks and inspections are to
be carried out
- Operating instructions of the heat
generator manufacturer
- Setting of
- temperature regulator
- pressure regulator
- limiter
- safety guard
- Gas connection pressure min. 20 mbar
flow pressure.
- Leaks in the gas supply elements
- venting of the fuel supply pipes.
- Open flue gas ducts, an adequate
supply of fresh air.
Burner program sequence test
without flame formation
The burner control unit activates the first
time the sealing test is activated. Gas
pressure is required for this. In order to
check the entire sequence test initially
without flame formation, close the gas
manual shut-off valve again once the
sealing test is complete.
Proceed as follows:
• Open the manual shut-off valve
• Activate the boiler controller to start
the heat generator
• Follow the sealing test as performed
on the display
• Once the second valve is open, close
the manual shut-off valve again.
• The program sequence test runs until
a safety shutdown is triggered
(malfunction lamp lights up) once the
safety period has elapsed or a
shortage of gas occurs
• Disconnect the power supply to the
burner
• Open the manual shut-off valve again,
supply the burner with voltage again, if
necessary unlock and restart.
Ionisation current measurement
The ionisation current can be measured
at the measuring point intended for this
purpose. To do this, remove measuring
bridge B10 and connect a multimeter
with a measuring range of 0-100 µA.
The monitoring current must be at least
8 µA.
01/2009 - Art. Nr. 4200 1016 3900A 27
Start up
Adjustment data
Air regulation
The air intake adjuster 6 is set at the
factory to 1.
Position 1 = max. blower pressure
Position 5 = min. blower pressure
In cases where a higher blower pressure
proves a disadvantage, e.g. large
negative pressure in the combustion
chamber, the pressure can be reduced
by adjusting the air intake adjuster:
• Loosen adjustment screw 7
• Set air intake adjuster to the new value
• Tighten the screw again.
The adjustment data listed above are the default settings. The factory-set adjustment values are outlined in bold. These adjustment
values are normally suitable for commissioning the burner. Always check the adjustment values on a case by case basis. System-
specific corrections may be necessary.
Air is regulated at two points:
- On the pressure side of the ventilator
via an air metering drum
- In the burner head via the baffle plate
and burner pipe nozzle.
The air metering drum has a linear
regulating characteristic and is operated
by turning regulating knob 103B. The
value set can be checked on the control
dial.
The regulation of air in the burner head
influences not only the airflow but also
the mixing zone and the air pressure in
the burner pipe. Turn screw 15
- clockwise = less air
- anti-clockwise = more air
The position of the baffle plate can be
controlled on dial Y.
Type
of
gas
Burner
head gas
pressure
119 pBr
(daPa)
Air flap
position
103 B
0 to 18
Burner
head
air
pressure
pL
(daPa)
Dimension
Y
(mm)
Gas
pressostat
setting
(daPa)
Air intake
adjuster
setting
152241310 1
253671420 1
35 69 10 19 25 1
40 36 11 26 25 1
50 44 15 27 30 1
62 76 10 46 25 -
76 104 12 45 30
-
86 126 18 55 35 -
15 34 3 5 22 1
258471225 1
35 156 11 20 30 1
40 50 12 28 25 1
50 63 18 29 30 1
59 76 10 45 25 -
70 93 13 45 30 -
85 123 18 56 35 -
100
(1)
100
(1): Default setting
G31
G20
G25
Burner
power
(kW )
VG1.40
VG1.55
VG1.85
VG1.40
VG1.55
VG1.85
en
01/2009 - Art. Nr. 4200 1016 3900A28
Start up
Setting the VR4625 compact gas unit
Setting the compact gas unit
Loosen screw plugs at measuring points
119 and 119 pBr and connect
measuring devices.
Pressure controller setting
The pressure regulator (screw C) is set
at the factory and sealed.
If the gas pressure has been wrongly set
or is too low, in order to get the desired
power, proceed as follows:
On the burner:
• Set the burner head and air flap
according to the table.
On the valve:
• Remove the protective cap on the
pressure regulator (104/C).
• Turn screw C:
- clockwise: more power
- anti-clockwise: less power
(Caution! No stop! The full adjustment
range is 10 turns. One turn =
60 daPa).
• Set pressure pBr via screw C.
• Measure gas pressure at point 119
and 119pBr.
Example:
To set a power of 25 kW with a G1.40,
apply the following settings:
- Setting for burner head: 20 mm
- Air flap setting: 7
- Set the gas pressure to
pBr= 42 daPa with screw C.
Checking the controllability
• Run burner at rated load.
• Measure gas pressure at point 119
and 119 pBr.
• Close the ball valve upstream of the
compact unit slowly until the gas input
pressure at 119 falls to 20 daPa.
The gas outlet pressure at 119pBr
must not fall by more than 10 %.
Otherwise the setting is to be checked
and corrected.
The system must not be operated
when the controllability is insuffi-
cient.
• Open the 90° manual shut-off valve.
• Fit the protective cap on the pressure
regulator.
Electrical connection
Warning: if the grey connector on the
gas pressostat is not fitted correctly
(image 2), the burner will go into
malfunction mode and the fault
"Awaiting gas pressure" will be
displayed.
1
2
01/2009 - Art. Nr. 4200 1016 3900A 29
Start up
Setting the MB-DLE407 compact gas unit
Locking
screw
Sealed
screw
Initial load flow adjustment - rapid
stroke adjustment
• Twist off protective cap 5 and turn it
through 180° to use it as an
adjustment tool.
• Turn the adjustment spindle towards
the minus symbol, then turn it back
towards the plus symbol to the middle
position (approximately 3 half turns).
The initial gas flow is now set to
around half open.
• To achieve smooth start-up
characteristics, the initial gas flow
should be adapted to the pressure
characteristics of the heat generator.
Pressure controller setting
The adjusting screw has a path of 60
turns for adjusting the output pressure.
Three turns clockwise or anti-clockwise
increases or reduces pressure by 1
mbar respectively.
At commissioning:
• Turn the screw at least 20 turns
clockwise (+)
• The gas pressure downstream of the
regulator pa should be:
12-15 mbar (can be measured at the
gas pressostat measuring nipple)
119.1).
Setting the rated load
• Loosen the locking screw until the
rotary knob 6 becomes adjustable. Do
not loosen the sealed screw on the
opposite side.
• Reduce the main flow by turning knob
6 clockwise or increase it by turning it
anti-clockwise. The total path to adjust
from minimum to maximum flow is
approximately 4.5 turns.
• Retighten the locking screw following
the adjustment.
• Measure the gas pressure at
measuring point 119pBr (for factory
setting, see page 12).
Optimising combustion values
Optimum combustion values can be
achieved by adjusting the position of the
baffle plate (dimension Y) if necessary.
Doing this can have an effect on starting
characteristics, pulsation and
combustion values. Any reduction in
scale value Y increases the CO
2
value.
However, starting characteristics
become harsher. Compensate for the
change in airflow if necessary by
adjusting the air flap position.
N.B.: Observe the minimum required
flue gas temperature specified by the
boiler manufacturer and the
requirements demanded of flue gas
ducts for avoiding condensation.
Checking the controllability
• Operate burner at rated load.
• Measure gas pressure at point 119
and 119pBr.
• Close the ball valve upstream of the
compact unit slowly until the gas input
pressure at 119 falls to 20 daPa.
The gas outlet pressure at 119pBr
must not fall by more than 10 %.
Otherwise the setting is to be checked
and corrected.
The system must not be operated
when the controllability is
insufficient.
• Open the 90° manual shut-off valve.
en
01/2009 - Art. Nr. 4200 1016 3900A30
Air pressure switch adjustment
Factory setting: 1.0 mbar
The switching point must be tested and
reset during adjustment.
• Install the pressure measuring device,
for this install a T-piece in the pressure
tube.
• Switch on the burner.
• Adjust the switching point
approximately 15 % below the
triggering pressure that is now set.
Start up
Air pressure switch adjustment
Setting the gas pressostat
Operating check
Setting the gas pressostat
• To set the shut-off pressure: Remove
the cover of the gas pressostat.
• Connect a device for measuring gas
pressure pa.
• Start the burner.
• Reduce the gas pressure upstream of
the train by closing the manual shut-
off valve until either:
- Gas pressure pa downstream of the
train reduces to 70 %
- Flame stability noticeably
decreases
- The CO value increases
- The flame signal worsens
considerably
• Turn the dial clockwise until the gas
pressostat shuts down the burner.
• Turn it clockwise again to set the gas
pressostat 10 % above the
predetermined shutdown value.
The gas pressostat adjustment value
must be higher than the blower pressure
but lower than the gas pressure
downstream of the gas valve.
Check the switch-off point:
• Open the manual shut-off valve
• Burner start
• Close the manual shut-off valve
The gas shortage program should start
without the burner control unit triggering
a safety shutdown.
Operating check
Flame monitoring must be checked for
safety as part of initial commissioning
and also after servicing or if the system
has been out of operation for any
significant period of time.
- Start attempt with closed gas valve:
The automatic combustion control unit
must switch to gas shortage or
malfunction after the end of the safety
period.
- Start-up with air pressure switch
closed:
Burner switches to malfunction after a
test time of 8 sec.
- Start-up attempt with air pressure
switch open:
Automatic firing device switches to
malfunction after a wait time of 60 sec.
- Start-up attempt with briefly-open air
pressure switch during preventilation:
Automatic firing device starts the
preventilation program again if air
pressure builds up again within 60
seconds, otherwise a safety shutdown
is triggered.
01/2009 - Art. Nr. 4200 1016 3900A 31
Service
Maintenance
Burner and boiler servicing must only
be carried out by a trained heating
specialist. The system operator is
advised to take out a service contract
to guarantee regular servicing.
Please observe the following points:
• Disconnect the electrical supply and
close the gas shut-off valve before
carrying out any maintenance or
cleaning work.
Checking the exhaust gas
temperature
• Check the flue gas temperature at
regular intervals.
• Clean the boiler if the flue gas
temperature is more than 30 K above
the value measured at the time of
commissioning.
• To simplify the check, use a flue gas
temperature indicator.
Burner maintenance positions
After removing the screws 5, the
equipment plate can be hung in the
maintenance positions.
Gas head disassembly
• Remove lock nut C of the pipe bracket,
screw in dome nut E
• Pull out gas pipe to the right and
downwards
• Undo ignition and ionisation cables.
• When refitting, make sure that the
cable is routed correctly and that
O-rings J1 and J2 are correctly
seated.
Maintenance work on the burner
• Check gas supply components (tubes,
lines) and their connections for leaks
or signs of wear, replace if necessary.
• Check electrical connections and
connection cables for damage,
replace if necessary.
• Check gas filter, clean or replace as
necessary.
• Clean blower wheel and housing and
check for damage.
• Check and clean the mixing unit.
• Check ignition electrodes block,
readjust or replace as necessary.
• Start burner, check flue gas data,
correct burner settings if necessary.
• Check the setting for air pressure
switch and gas pressostat.
• Check the gas train controllability.
• Carry out an operating check.
Blower wheel assembly
Observe the positioning diagram below
when replacing the motor and blower
wheel. The inside flange A of the blower
wheel must be fitted at the same level as
the equipment plate B. Insert a straight
edge between the wing of the blower
wheel and set A and B to the same
height, tighten the set screw on the
blower wheel (maintenance position 2).
en
01/2009 - Art. Nr. 4200 1016 3900A32
Maintenance
Troubleshooting
Fault diagnosis and repair
Faults
In the event of a malfunction, first check
that the prerequisites for correct
operation are fulfilled:
1. Is the system connected to the
power supply?
2. Is there any gas pressure?
3. Is the gas shut-off valve open?
4. Are all control and safety devices,
such as the boiler thermostat, low
water level detector, limit switch,
etc. adjusted correctly?
If the malfunction persists, use the
following table.
It is not permitted to repair any
components relevant to safety. These
components must be replaced by parts
with the same order number.
Only use original spare parts.
NB:
After each operation:
• Under normal operating conditions
(doors closed, hood fitted, etc.), check
combustion and check the individual
lines for leaks.
• Record the results in the relevant
documents.
Symbol Symbol Fault Cause Remedy
No heat request Thermostats defective or incorrectly adjusted Adjust the thermostats, replace if
necessary.
Burner does not start after
thermostat shutdown.
No malfunction indicated on the
automatic combustion control unit.
Drop in supply voltage or power failure.
Control unit malfunction.
Check the cause of the fall in voltage or
the power failure.
Replace the control unit.
Burner starts briefly when switched
on, switches off and the red LED
lights up.
Control unit was deliberately shut down. Unlock the unit.
Burner does not start. Air pressure switch: not in rest position
Incorrect adjustment
contact is welded
Readjust the pressure switch.
Replace the pressure switch.
Burner does not start.
Normal gas pressure
Insufficient gas pressure
Gas pressostat wrongly set or defective
Check gas lines.
Clean the filter.
Check the gas pressostat or replace the
compact gas unit.
Burner blower starts up. Burner
does not start.
Air pressure switch: the contact does not close Check the pressure transmitter (foreign
bodies) and wiring.
Burner blower starts up. Burner
does not start.
Flaring during pre-ventilation or pre-ignition. Check the valve. Check flame
monitoring.
The burner starts, the ignition
switches on, then failure
No flame at the end of the safety period.
Gas throughput set incorrectly.
Faulty flame monitoring circuit
No ignition arc.
Electrode(s) short-circuited.
Ignition cable damaged or defective.
Ignition transformer defective
Automatic combustion control unit.
Solenoid valves do not open.
Valves jamming.
Adjust the gas throughput.
Check the condition and position of the
ionisation sensor in relation to earth.
Check the condition and connections of
the ionisation circuit (cable(s) and
measurement bridges).
Adjust, clean or replace electrode(s).
Connect or replace the cable(s).
Replace the transformer.
Replace the control unit.
Check the cabling between the control
unit and external components.
Replace the compact gas unit.
Replace the valves.
The burner switches off during
operation.
Air pressure switch: contact opens during start-
up or during operation.
Flame failure during operation.
Adjust or replace the pressure switch.
Check the ionisation sensor circuit.
Check or replace the automatic
combustion control unit.
01/2009 - Art. Nr. 4200 1016 3900A 33
Servicing
Maintenance frequency indicator
After a certain period of operation, the
following information may be displayed:
This means that
maintenance must
be carried out by a
specialist.
If the fitter has
registered his
telephone number,
then this appears,
as well as the
number of the
completed service
contract (accessible
via the fault menu)
To change the telephone number
• Call up the fault menu by pressing BP1,
then keep pressing the button to scroll
through BP1 until the desired pictogram
is displayed.
• Press BP2 to enter a change in the
pictogram: the first figure flashes.
• Select the value (from 0 to 9) by
repeatedly pressing BP1.
• Confirm by pressing BP2.
• Repeat the operation until you reach the
last figure.
After confirming the last figure, the
complete pictogram is displayed for 5
seconds, then the control unit returns to
the operating screen.
To change the contract number
• Call up the fault menu by pressing BP1,
then keep pressing the button to scroll
through until the desired pictogram
«contract number» is displayed.
• Press BP2 to enter a change in the
pictogram: the first figure flashes.
• Select the value (from 0 to 9) by
repeatedly pressing BP1.
• Confirm by pressing BP2.
• Repeat the operation until you reach the
last figure.
After confirming the last figure, the
complete pictogram is displayed for 5
seconds, then the control unit returns to
the operating screen.
A4 Display
BP1 push-button 1
Request: fault code
BP2 push-button 2
Request: values
en
01/2009 - Art. Nr. 4200 1016 3900A34
01/2009 - Art. Nr. 4200 1016 3900A 35
01/2009 - Art. Nr. 4200 1016 3900A36
Hergestellt in der EU. Fabriqué en EU. Fabricato in EU.
Angaben ohne Gewähr. Document non contractuel. Documento non contrattuale.
Hotline
ELCO Austria GmbH
Aredstr.16-18
2544 Leobersdorf
0810-400010
ELCO Belgium nv/sa
Z.1 Researchpark 60
1731 Zellik
02-4631902
ELCOTHERM AG
Sarganserstrasse 100
7324 Vilters
0848 808 808
ELCO GmbH
Dreieichstr.10
64546 Mörfelden-Walldorf
0180-3526180
ELCO Italia S.p.A.
Via Roma 64
31023 Resana (TV)
800-087887
ELCO-Rendamax B.V.
Amsterdamsestraatweg 27
1410 AB Naarden
035-6957350
www.elco.net
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elco VECTRON G 1.85 Operating Instructions Manual

elco
Brand
elco
Model
VECTRON G 1.85
Type
Operating Instructions Manual
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