Chappee EDENA CLASSIC E 35 User guide

1 Réf. : CH - 1254 - I - 0 - EN
Model : 35 - 43 - 53 - 64 kW
Gas Fired Floor Standing Boiler
EDENA CLASSIC E
INTALLATION AND SERVICING INSTRUCTIONS
N04266.DSF
Réf. : CH - 1254 - I - 0 - EN 09/05

2Réf. : CH - 1254 - I - 0 - EN
Contents
1.0 Introduction
2.0 General Layout
3.0 Technical Data
4.0 Dimensions
5.0 System Details
6.0 Site Requirements
7.0 Installation
8.0 Commissioning the boiler
9.0 Servicing the boiler
10.0 Changing Components
11.0 Illustrated Wiring Diagram
12.0 Fault Finding
13.0 Short Parts List

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1.0 INTRODUCTION
NOTE:This appliance must be installed in accordance
withthemanufacturer’sinstructionsandtheregulationsin
force.Readtheinstructionsfullybeforeinstallingorusing
the appliance.
Boilers are built in accordance with the following
Europeandirectives:
Directive “Low voltage” 73 / 23 / EEC
Directive “Electromagnetic 89 / 336 / EEC
compatibility”
Directive “Gas equipment” 90 / 396 / EEC
Directive “Output” 92 / 42 / EEC
Directive “Pressure vessels” 97 / 23 / EEC
This boiler and fittings included comply with the
directive,withouthoweverbeingsubjecttoECmarking
(according to Article 3.3).
BAXI declare that no substances harmful to health
are contained in the appliance or used during
appliance manufacture. Data badge
1.1 Description
1. Th Osprey 2 CFL is a fully automatic gas fired floor
standing conventionally flued boiler with a cast iron
heat exchanger.
2. Theboileris designed for use with fully pumped open
vented or sealed water systems with an indirect hot
water cylinder.
3. The boiler is available in outputs of 35.0, 43.0,52.8
and 64.5kW.
4. It is designed for use on Natural Gas (G20) and
propan (G 31).
5. Theboilerdatabadgeispositionedontheboilerinner
front panel.
6. The boiler is intended to be installed in residential /
commercial / light industrial E.M.C. environments on
a governed meter supply only.
7. All systems must be thoroughly flushed and treated
with inhibitor.
Inner Front
Panel
N04267.DSF

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Osprey 2
2.0 GENERALLAYOUT
2.1 Layout
1. Flue Spigot
2. Draught Diverter
3. Cable Clamp
4. Flue Safety Thermostat
5. Flow Connection
6. Return Connection
7. Burner
8. Gas Inlet Connection
9. Burner Ignition Control
10. Boiler Drain and Cap
11. Gas Valve
12. Burner Manifold
13. Pilot Feed Pipe
14. Pressure Test Point
15. Pilot
RESET
RESET ON/OFF
27 28 29 30
23 24 25 26
N04268.EPS
16. Overheat Thermostat
17. Boiler Thermostat
18. Inner Front Panel
19. Control Panel
20. Cleaning Brush
21. Heat Exchanger
22. Flue Hood
23. Boiler Safety Overheat Neon
24. Flame Failure Neon
25. Burner On Neon
26. Power On Neon
27. Boiler Safety Overheat Reset
28. Flame Failure Reset
29. On/Off Button
30. Temperature Control
21 22
1
2
3
4
5
8
6
7
9101112
13
14
15
16
17
18
19
20
N04358.EPS

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60
80
100
120
40
20
0
0102030405060
180
220
70 80 90 100 110 120
3.0 TECHNICALDATA
Hyfraulic Resistance Charts
Pressure Drop (mbar)
Flow Rate (l/min) Flow Rate (l/min)
Pressure Drop (mbar)
35 and 43
53 and 64
N04269.EPS
60
40
20
0
0102030405060
125
150
70 80
N04359.EPS
35
43 53
64
Model 35 43 53 64
CE N° 1312BM3629 1312BM3628 1312BM3626 1312BM3627
Applliance Type B11BS
Appliance Categorie gas II 2H 3P
Heat input kW 43,07 47,83 58,34 71,83
Heat Ouput kW 35,0 43,0 52,8 64,5
Gas rate G 20 - 20 mbar m3/h 4,0 5,06 6,0 7,3
Burner pressure G 20 - 20 mbar mbar 11,2 ±0,4 11,4 ±0,4 11,0 ±0,4 11,8 ±0,4
Burner injector G 20 mm Ø 2,6
Pilot injector G 20 mm Ø 0,45
Gas rate G 31 - 37 mbar g/h 2950 3640 4440 5470
Burner pressure G 31 - 37 mbar mbar 36 36 36 36
Burner injector G 31 mm Ø 1,7
Pilot injector G 31 mm Ø 0,24
Maximum working head bar 4
NOx Class 32
Maximum flow temperature °C 85
Gas supply Inch 1/2"
Flue connection mm 140 154 181 201
Water connection Inch 1" 1/4
Water Content litres 24 29 33 38
Electrical Suply 230 V - 50 Hz
Power Consumption (excluding pump) W 25
External Fuse Rating A 3
Electriical Protection IP20
Weights kg 140 170 200 230

6Réf. : CH - 1254 - I - 0 - EN
Model
35
43
53
64
4.0 DIMENSIONS
A
B
C
D
511
850
A
600
695
790
885
B
332,5
380
427,5
475
C
600
600
650
650
D
140
154
181
201
N04270.DSF

7 Réf. : CH - 1254 - I - 0 - EN
5.0 SYSTEM DETAILS
5.1 Primary Circuit
1. The appliance is suitable for fully pumped systems
only. The system can be open vented or sealed.
2. A sealed system must incorporate the following :
• Safety Valve
• Pressure Gauge
• Expansion Vessel
• Filling Point
Treatment of Water Circulating System
• All recirculatory water systems will be subject to corro-
sion unless an appropriate water treatment is applied.
This means that the efficiency of the system will
deteriorate as corrosion sludge accumulates within the
system,riskingdamagetopumpandvalves,boilernoise
and circulation problems.
Failure to flush and add inhibitor to the system may
invalidate the appliance warranty.
• It is important to check the inhibitor concentration after
installation, system modification and at every service
in accordance with the manufacturer’s instructions.
(Test kits are available from inhibitor stockists.).
5.2 Bypass
1. The boiler is fitted with a pump overrun device which
allowstheremovalofresidualheatfromtheboiler.The
systemdesign musttherefore alwaysprovideanopen
circuittoallowwatercirculationbetweentheboilerflow
and return.
2. Any bypass must be capable of allowing a minimum
flow rate of 8l/min and be able to dissipate at least
2kW.
5.3 System Control
1. The boiler is intended for use in a heating system that
incorporates external controls, i.e. a minimum of a
timer device.
2. For optimum operating conditions and maximum
economy the fitting of room and cylinder thermostats
is recommended.
3. The boiler should be controlled so that it operates on
demand only.

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6.0 SITE REQUIREMENTS
6.1 B.S. Codes of Pracitice
WARNING : The addition of anything that may interfere
with the normal operation of the appliance without the
express written permission of BAXI could invalidate
the appliance warranty and infringe the GasSafety
(Installation and Use) Regulations.
700 mm
200 mm 700 mm
123456789012345678901234567890121234567890123456789
1
2345678901234567890123456789012123456789012345678
9
123456789012345678901234567890121234567890123456789
Minimum Front &
Rear Clearances
700 mm
150 mm 150 mm
Minimum Side
Clearances
123456789012345678901234567890
1
2345678901234567890123456789
0
123456789012345678901234567890
N04270.DSF

9 Réf. : CH - 1254 - I - 0 - EN
6.2 Location
1. The boiler must be positioned on a flat and level floor
or base which must be capable of supporting the full
operational weight of the boiler. The flue must pass
through an outside roof or wall and discharge to
atmosphere in a position permitting satisfactory
removal of combustion products.
2. The boiler should be fitted within the building unless
otherwise protected by a suitable enclosure i.e. ga-
rage or outhouse.
3. If the boiler or any part of the system is located in an
area that may be subjected to low ambient tempera-
tures, it is recommended that a suitable frost protec
tion device is incorporated into the control system.
6.3 Gas Supply
1. The gas installation should be in accordance with
reglementation.
2. The connection to the appliance is 1/2" Rp
Donot use pipes ofasmaller diameter than theboiler
gas connection
6.4 Electrical Supply
1. External wiring must be correctly earthed.
2. The mains supply is 230V ~ 50Hz fused at 3A.
NOTE:Themethodofconnectiontothe electricitysupply
must facilitate complete electrical isolation of the
appliance.
Connection may be via a fused double-pole isolator with
a contact separation of at least 3mm in all poles and
servicing the boiler and system controls only.
6.5 Flues & Ventilation
1. The room or space of installation must be ventilated
toensure the correct and safe operation of the boiler.
2. Thefluesystem shouldbelinedthroughoutitslength.
3. Minimum flue length is 1m. There should be at least
1m of vertical flue from the boiler flue socket, and
horizontal runs and 90°bends should be avoided.
4. If an existing chimney is used it must be fully swept
before lining or connecting the boiler. Precautions
should be taken to avoid condensation forming in the
flue.
5. Theflue diameter mustbeat least the samediameter
as the connection on the boiler draught diverter.
6. Theflueterminal must be of anapprovedtypeand be
positioned above roof level.
N04358.EPS
Gas
Connection

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LNLHT
SWL
LNLHT
SWL
N04339.DSF
7.0 INSTALLATION
7.1 Initial Preparation
The gas supply, gas type and pressure must be
checked for suitability before connection.
1. Ensure that the floor or base on to which the boiler is
to be fitted is clean and free from debris.
2. Installany pipeworkthatwill bebehindthe boiler,and
any appropriate flue components.
3. Manoeuvre the boiler into position, seeking assis
tance as necessary. Check the clearancesas shown
in Section 6.1.
4. Connectthe gas supplypipeandthe system flowand
return connections to the boiler.
5. Connect the flue systemt. Any flue pipe must be at
least the same diameter as the connection on the
boiler draught diverter.
7.2 Making the Electrical
1. Undothe twosecuringscrews fromtherear ofthe top
panel. Remove the panel
2. Swivel the two retaining plates through 90°. Lift the
control box slightly and allow it to hinge forwards.
Undo the two retaining screws and remove the cover
panel.
3. The input wiring to the boiler and the pump feed from
the boiler should be routed through the grommet/
clamps in the control box rear panel.
4. Remove the clamps from the panel and slit the
grommets with a suitable knife or blade.
5. Determine the length of the wiring and secure in the
clamps.
6. Connectlive,neutral, earth, and switched livetoL,N,
& SL of the terminal strip. The pump live, neutral and
earth should be connected to PL, PN & of the
terminal strip.
Gas Inlet
Return Connection
Terminal strip Earth Point
Burner
Control
Connection Cable Clamps
Safety Thermostat Temperature Control Thermostat
Grommet
Front Panel
Magnets
Top Panel
Securing
Screws
Flow Connection
N04327.DSF
002163-01
N02164.DSF
N04329.EPS
Cover Panel
N04358.EPS
Boiler draught
Diverter connection

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8.0 COMMISSIONINGTHEBOILER
8.1 Commisioning the Boiler
1. Open the water supply to the boiler.
2. The system must be flushed, (see Section 5.1 of
these instructions and the flushing agent manufactu-
rer's instructions).
3. Turn the gas supply on and purge the system.
4. Test for gas soundness.
8.2 Checking the Burner Pressure
1. Slacken the pressure test point sealing screw and
connect a pressure gauge.
2. Turn on the gas and electrical supplies to the boiler
and ensure that all external controls are calling for
heat.
3. Set the temperature control to maximum.
4. Check the burner setting pressure (see Section 3.0
“Technical Data”).
5. If necessary adjust the pressure by removing the gas
valvegovernorcoverandturningthescrewtoachieve
the required pressure.
6. Turn the boiler off and reassemble in reverse order.
Tighten the pressure test point sealing screw .
8.3 Completion
1. Flush the system again and treat it,(see Section 5.1
ofthese instructions and the flushing agent and
inhibitor manufacturer’s instructions).
2. Instructthe user in theoperationof the boiler controls
and the function and resetting of the various safety
devices.
3. Refit the outercase front and top panels.
N04266.DSF
Thermostat Knod
Burner Pressure Test Point
Inlet Pressure
Test Point
Govemor Cover Screw
LH View of Gas
Valve
N04331.DSF
N04330.TIF
Front Panel
Magnets
Top Panel
Securing
Screws
N04327.DSF

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9.0 SERVICING THE BOILER
9.1 Annual Servicing
1. Forreasonsofsafetyandeconomy,itisrecommended
thatthe boiler is servicedannually.Servicing must be
performed by a competent person.
2. Ensure that the boiler is cool.
3. Ensure that both the gas and electrical supplies
to the boiler are isolated.
4. Undothe twosecuringscrews fromtherear ofthe top
panel. Remove the panel.
5. Disengagethe frontpanelfromtheretainingmagnets
andhinge forwards. Unhook the panel from the lower
hinge pins and place to the right hand side, taking
care not to stretch the earth wire.
6. Undo the wing nuts securing the combustion box top
panel. Remove the panel.
7. Undothedisconnectinguniononthegasinlet.Remove
the screw securing the burner ignition control to the
gas valve. Draw the control off the valve.
8. Undo the two nuts securing the valve, injector mani
fold and burner assembly to the boiler.
9. Hold the manifold and carefully draw the assembly
away from the boiler. Retain the washer from the gas
inlet connection.
10. Brush any dirt or debris from the burner skins. Exa-
minethe burnersforblocked ports.Anyblockage can
be removed using a fine wire brush.
11. Inspect the pilot assembly, electrodes and injectors.
Replace if necessary.
12. Ensure that the spark and sensing leads are clipped
into the separation brackets and do not cross over
each other.
13. Slide a suitable sheet of paper or cloth undert he
boiler heat exchanger.
14. Unclip the brush from the top edge of the left hand
side panel clean between the boiler fins. Check for
any blockage.
15. Carefully withdraw the sheet and dispose of in a
proper manner. Check under the boiler and remove
any fallen dirt or debris.
16. Reassemble in reverse order of dismantling and
recommission.
Front Panel
Magnets
Top Panel
Securing
Screws
N04327.DSF
CombustionBox
Top Panel
Wing Nuts
N04332.DSF
Gas Cock
Sealing Washer
Disconnecting
Union
Gas Valve
Securing
Screw
Burner
Ignition
Control
Cleaning Brush
Burner
Skin
Securiting
Nuts (x2)
Manifold
Sheet of
Paper
Heat Exchangeur
Fins
Pilot assembly
N04334.TIF
N04338.TIF

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10.0 CHANGING COMPONENTS
IMPORTANT : When changing components ensure
thatboth the gas and electrical supplies to the boiler are
isolated before any work is started.
Undo the two securing screws from the rear of the top
panel. Remove the panel.
Disengage the retaining magnets at the top of the front
panel and hinge forwards. Unhook the panel from the
lower hinge pins.
10.1 Boiler Thermostat
1. Swivel the two retaining plates through 90°. Lift the
control box slightly and allow it to hinge forwards.
Undothetworetaining screwsandremovethecover
panel
2. After noting their position remove the wires from the
thermostat body. Turn the thermostat knob fully
anticlockwise and pull it off.
3. Remove the screws securing the thermostat to the
control panel and pull off the earth wire.
4. Pullthespringclipoffthethermostatpocket.Withdraw
both the boiler and overheat thermostat phials and
the spacer tube from thepocket.
5. Takethe new thermostat and turn the operating shaft
fully anticlockwise.
6. Reassemble in reverse order. The securing screw
incorporating the pin must be used on the right.
Ensure both phials and the spacer tube are pushed
fullyintothethermostatpocketandthecapillariesare
retained by the clip.
10.2 Boiler Safety Thermostat
1. Swivel the two retaining plates through 90°. Lift the
control box slightly and allow it to hinge forwards.
Undo the two retaining screws and remove the cover
panel.
2. After noting their position pull the wires from the
thermostat body .
3. Remove the locknut securing the thermostat to the
control panel.
4. Pullthespringclipoffthethermostatpocket.Withdraw
both the boiler and overheat thermostat phials and
the spacer tube from the pocket.
5. Reassemble in reverse order, ensuring both phials
andthespacer tube are pushed fully into thethermos
tat pocket and the capillaries are retained by the clip.
Front Panel
Magnets
Top Panel
Securing
Screws
N04327.DSF
Cover Panel
N04339.DSF
002163-01
N02164.DSF
Spring
Clip
Thermostat
Phials
Spacer
Tube
Thermostat
Securing Pin
Screw
ControlKnob
Securing Screw
Earth Wire
Lock Nut
Safety Thermostat
N04336.TIF
N04335.TIF

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10.3 Gas Valve
1. Undothedisconnectinguniononthegasinlet.Remove
the screw securing the burner ignition control to the
gas valve. Draw the control off the valve.
2. Undo the two nuts securing the valve, injector mani-
fold and burner assembly to the boiler.
3. Hold the manifold and carefully draw the assembly
away from the boiler. Retain the washer from the gas
inlet connection.
4. Undo the pilot feed pipe from the gas valve, and
slacken it at the pilot burner to allow it to swing clear.
5. Undo the four screws securing the gas valve to the
injector manifold. Remove the valve and seal.
6. Check the condition of the seal previously removed
before fitting the new valve to the injector manifold.
Replace as necessary.
7. Reassemble in reverse order and check the condi-
tionofthesealtobeusedonthe disconnectingunion.
Replace as necessary.
10.4 Burner (s)
1. Undo the disconnecting union on the gas inlet.
Removethescrewsecuringtheburnerignitioncontrol
to the gas valve. Draw the control off the valve.
2. Undo the two nuts securing the valve, injector mani-
fold and burner assembly to the boiler.
3. Hold the mani fold and carefully draw the assembly
away from the boiler. Retain the washer from the gas
inlet connection.
4. Carefully draw the insulation piece away over the
burners .
5. Undothescrewssecuringtheburner(s)tobereplaced.
Remove the burner(s).
6. Reassembleinreverseorder,replacingtheinsulation
piece if it is damaged.
10.5 Injector(s)
1. Using a suitable spanner undo from the manifold the
injector(s) to be replaced.
2. Reassemble in reverse order using a new sealing
washer for each injector.
10.6 Pilot Assembly
1. Disconnect and remove the pilot feed pipe. Pull the
electrode leads off the gas valve burner ignition
controlandunclipthemfrom theseparation brackets.
2. Undothepilotbracketsecuringscrews.Withdrawthe
bracket from the burner mounting plate. Carefully
remove the pilot injector from the bracket.
3. Inspect the injector and replace if it is blocked or
damaged. Check the condition of the pilot bracket
sealing gasket and replace if necessary.
4. The new pilot assembly must be fitted as shown, with
the spark electrode to the right.
5. Clip the electrode leads into the separation brackets.
Ensure that the leads do not cross over each other.
6. Reassemble in reverse order.
Gas Cock
Sealing Washer
Disconnecting
Union
Gas Valve
Securing
Screw
Burner
Ignition
Control
Securiting
Nuts (x2)
Manifold
N04334.TIF
N04338.TIF
Gas Valve
QuadSeal
Valve Securing
Screws
Burner Manifold
Securiting
Nuts (x3)
Manifold
Insulation
Burner
Injector and Washer
Sealing Gasket
Spark
Electrode
Insulation
Pilot Bracket
Pilot Feed Pipe
N04340.TIF
N04337.TIFN04342.TIF

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10.7 Flue Safety Thermostat
1. Undo the nut securing the Flue Safety Thermostat to
the draught diverter. Ease the cable clamp from the
slot in the draught diverter.
2. Undo the screw retaining the earth wire to the boiler
anddisconnect the plug on the Flue Safety Thermos-
tat cable from the boiler harness.
3. Reassembleinreverseorder.Check the operation of
theSafetyThermostatbycappingtheflue.The boiler
should extinguish within three minutes.
10.8 Burner Ignition Control
1. Removethescrewsecuringtheburnerignitioncontrol
to the gas valve. Draw the control off the valve.
2. Pulltheelectrodeleadsofftheburnerignitioncontrol.
3. Prise apart the three barbs securing the control
cover. Remove the cover.
4. Undo the screws securing the cable clamp to the
control and disconnect the edge connector from the
control P.C.B.
5. Fit the new burner ignition control and reassemble in
reverse order. Cable
Clamp
Flue Safety
Thermostat
N04327.DSFN04331.DSF N04344.TIF
N04341.TIF
Flue Safety
Thermostat
Earth Retaining
Screw
Draught Diverter
Securing Nut
Burner Ignition
Control
Sensing Electrode
Spark Electrode
Cable Clamp
Edge Connector
N04343.TIF

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L
N
SL
w 21
w 20
w 28
w 40
w 72
w 71
w 42
w 42
w 61
w 67
b 50
b 50
w 29
w 28
b 50
w 27
b 30
b 50
w 66
b
bb
11.0 ILLUSTRATED WIRING DIAGRAM
N04345.TIF
Safety Thermostat
Flame Failure
Rest Button
Flame Failure
Neon (Red)
Burner ON
Neon (green)
Power ON Neon
(orange)
ON / OFF
Button
Safety Thermostat Neon
(Red) Control Thermostat
Burner Ignition
Control External
Pump
Pilot Assembly
Flue Products
Safety Thermostat
Key to Wiring
b : blue
w : white

17 Réf. : CH - 1254 - I - 0 - EN
12.0 FAULT FINDING
1. This page shows the configuration of the plug and
socket on the Burner Ignition Control supply. The
socket is part of the boiler harness and the plug is on
the lead connected to the Burner Ignition Control.
2. Illustrates the layout of the edge connector on the
Burner Ignition Control.
Position
A
B
C
D
E
F
G
H
J
K
L
M
Wire Identitication
W20
W41 (linked to H)
W66
B50
W29
B30
Neutral to "N" on Terminal Strip
W41 (linked to B)
W28
W67
Earth
W61
BCDA
FGHE
KLMJ
10 42
68
12 3
11 1
12 11 10 9 8 7 6 5 4 3 2 1
View of Socket end on
View of Harness Plug end on
Layout of Edge Connector on Ignition Controller Harness
Burner Ignition Controller Harness Plug
Numbers refer to pin position on edge
connector at Burner Ignition Controller
to which this plug is connected. Dotted
lines indicate link wires.
Numbers correspond to pins on
Burner Ignition Controller 1 & 11 - Neutral 5 & 9 - Linked
7 - Unused
12 - Earth
Boiler Harness Burner Ignition Controller Socket
Thefollowingtable indicateswhichwiresfromthemain
harness are connected to the socket.
N04346.TIF
N04347.TIF
N04348.TIF
N04349.TIF

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START Is the “Power On” neon
illuminated ? Is there 230V at SWL & N on terminal strip?
Electrical fault external to
boiler Is there permanent live
to the boiler?
Is there 230V at L & N
connections on the neon?
Internal electrical fault on
boiler
Replace neon
Check supply from
externalcontrols
Does the On/Off button
illuminate when pressed in?
Is there 230V at L & N of
the On/Off button?
Check boiler internal
wiring
Replace On/Off Button
CARRY OUT THE FOLLOWING PRELIMINARY CHECKS BEFORE
COMMENCING FAULT FINDING
1. Check that gas, water and electrical supplies are available at the boiler.
Electrical supply = 230V ~ 50 Hz. The preferred minimum gas pressure is
19.5mbar (natural gas).
2. Carry out electrical system checks, i.e. Ground Continuity, Resistance to
Ground, Short Circuit and Polarity with a suitable meter. Note: Repeat these
checks after servicing or fault finding.
3. Ensure all external controls are calling for heat and check all external and
internal fuses. Before servicing or replacement of parts ensure the gas and
electrical supplies are isolated.
YES
NO NO
NO
NO
NO
YES
YES
YES
YESYES
NO

19 Réf. : CH - 1254 - I - 0 - EN
Does the pump run ?
Is there 230V at PL & PN
on the terminal strip?
Check pump or pump
wiring
Check boiler internal
wiring
Replace pump
Is there a spark at the
electrode?
Is the Boiler Safety
Overheat neon illuminated?
Unscrew the cover and
press the reset button
Check and clean the
spark electrode
Check the spark gap is
3.0 ±0.5mm
Check condition of spark
lead and connection at
burner ignition control
Replace pilot assembly if
lead is damaged
If sparking does not start
is there 230V at L & N
connections on the Boiler
Safety Overheat neon ?
Replace the neon
If boiler overheated
establish cause
Check continuity of wiring
Replace Safety
OverheatThermostat
Check boiler flow temperature
Check continuity of wiring
ReplaceTemperature
Control Thermostat
Check flue for blockage or
adverseconditions
Check continuity of wiring
Replace Flue Safety
Thermostat
Is there continuity across
SafetyOverheat
Thermostatconnections
W28 & W29?
Is there continuity across
TemperatureControl
Thermostatconnections
W20 & W21?
Is there continuity across
Flue Safety Thermostat at
connections T & H on
terminal strip?
YES
YES YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NONO
NO

20Réf. : CH - 1254 - I - 0 - EN
Does the pilot burner
flame light ?
Does the spark continue
for 25 seconds?
Is the flame failure neon
illuminated?
Press reset button
Is there 230V at L & N
connections on the neon?
Replace the neon
Is there 20mb pressure at
Gas Valve inlet?
Check & rectify supply
Is there gas at the pilot
feed tapping on the Valve?
Remove Burner Ignition
Control from valve
Is resistance across pilot
solenoid connections V1
4.3 kohm ±10%?
If not, replace gas valve
Is the Pilot Feed Pipe or
Pilot Burner Injector
blocked?
If so, clean or replace
Do the main burners light ?
Is there 20mb pressure at
Gas Valve inlet?
Check & rectify supply
Is there gas at the burner
pressure test point?
Remove Burner Ignition
Control from valve
Is resistance across main
solenoid connections V2
3.9 kohm ±10%?
If not, replace gas valve
Remove cover from
Burner Ignition Control
Is there 230V across pins
10 & 11 of edge connector?
Check boiler internal wiring
Does the boiler shut down
when the flow
temperature reaches 85°?
BOILER
OPERATING
CORRECTLY
Ensure control knob is fully
clockwise and the
thermostat phial is correctly
fitted in the pocket
ReplaceTemperature
Control Thermostat
Check and adjust the
burner pressure to that
stated in Technical Data
Replace gas valve
Replace Burner Ignition
Control
NO
YES
YES
NO
YES
NO
YES
NO
YES
NOYES
NO
YES NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
Pilot Solenoid Connections
Main Solenoid Connections