Wolf CGB-2 Series User manual

GB
IE
WOLF GMBH / POSTFACH 1380 / D-84048 MAINBURG / TEL. [phone] / FAX [phone] / www.WOLF.eu
Art.-Nr.: 3064810_201804 Subjecttotechnicalmodications
Installationinstructionsforcontractors
Wall mounted gas condensing boiler
CGB-2 wall mounted gas condensing boiler
CGB-2K wall mounted gas condensing combi boiler
CGB-2-14
CGB-2(K)-20
CGB-2(K)-24

2 3064810_201804
Tableofcontents
1. Information on documentation/standard delivery...............................3
2. Safety instructions .............................................................................5
3. Dimensions........................................................................................8
4. Specification ....................................................................................10
5. Layout.............................................................................................. 11
6. Electronic gas/air mixture ................................................................13
7. Casing .............................................................................................14
8. Standards and regulations...............................................................15
Installation
9. Positioning.......................................................................................18
10. Installation dimensions ....................................................................19
11. Installation .......................................................................................21
12. Gas connection................................................................................23
13. Fitting the trap..................................................................................24
14. Air/flue gas routing...........................................................................25
Control unit
15. Electrical connection........................................................................26
16 Flue gas damper/ventilation air damper electrical connection.........32
17. Display/programming module installation........................................33
18. Removing the display module/programming unit ............................34
19. AM display module ..........................................................................35
20. AM display module menu structure .................................................36
21. Operating mode/Boiler burner status...............................................37
22. BM-2 programming unit...................................................................38
23. HG control parameters ....................................................................39
24. Parameter description .....................................................................40
Commissioning
25. Filling the heating system/trap.........................................................52
26. Filling of optional appliance versions...............................................56
27. Draining the heating system............................................................57
28. Determining/changing the gas type.................................................58
29. Checking the gas supply pressure ..................................................60
30. Adjusting the maximum heating output ...........................................61
31. Checking the combustion parameters.............................................62
32. Converting from combi boiler to boiler with cylinder........................64
33. Setting the flow limiter .....................................................................65
34. High efficiency pump function description .......................................66
35. Commissioning report......................................................................68
Specication
36. Safety devices .................................................................................70
37. Technical information, air/flue gas routing .......................................71
38. Technical information, underfloor heating/DHW circulation.............86
39. Reset ...............................................................................................87
40. Technical maintenance and design data .........................................88
41. Troubleshooting...............................................................................89
42. Troubleshooting warning messages................................................97
43. HCM-2 wiring diagram.....................................................................99
44. Product fiche according to Regulation (EU) No. 811/2013 ............101
45. Technical parameters according to EU regulation no. 813/2013...103
46. Notes .............................................................................................104
EU DECLARATION OF CONFORMITY................................................107

3064810_201804 3
1. Informationondocumentation/
standarddelivery
1.1 Otherapplicabledocuments
- Operating instructions for the user
- Maintenance instructions
- System and operating log
The instructions for all accessory modules and other accessories also apply where
relevant.
1.2 Safekeepingofthesedocuments
The system user or operator should ensure the safekeeping of all instruction manuals
and documents.
► Handovertheseinstallationinstructionsaswellasallotherapplicablemanuals
to the system user or operator.
1.3 Instructingthesystemuser
- Instruct the system user to take out an inspection and maintenance contract with
an approved contractor.
- Inform the system use that the annual inspection and maintenance may only be
performed by an approved contractor.
- Inform the system use that repair work may only be performed by an approved
contractor.
- Inform the system user that only original spare parts may be used.
- Inform the system user that no technical changes may be made to the boiler or
control unit.
- Inform the system user that they are responsible for the safety, environmental com-
patibility and energy quality of the heating system (German Immission Control Act/
Energy Saving Ordinance) [Germany].
- Inform the system user that these instructions and the other applicable documents
must be kept in a safe place.
- Instruct the system user how to operate the heating system.
1.4 Applicabilityoftheseinstructions
These installation instructions apply to the CGB-2(K) gas condensing boilers.
1.5 Acceptance
Within 4 weeks of commissioning the combustion system, the operator must notify
the local flue gas inspector accordingly [check local regulations]. According to Bun-
des KÜO (German Federal Sweeping and Inspection Act), tests and inspections are
only required every 3 years [Germany].
1.6 Recyclinganddisposal
- Old equipment may only be disconnected from the gas and electricity supply by a
qualified contractor.
- Always dispose of materials according to environmental, recycling and waste man-
agement standards.
- Old equipment, worn parts, defective components and liquids and oils which are a
hazard to the environment must be disposed of or recycled according to the appli-
cable waste disposal regulations in an environmentally compatible manner.
Theymustnotbedisposedofashouseholdwaste.
- Dispose of packaging made of cardboard, recyclable plastics and synthetic filler
materials in an environmentally compatible manner through appropriate recycling
systems or a recycling centre.

4 3064810_201804
1. Informationondocumentation/
standarddelivery
1 x Gas condensing boiler ready to connect, in casing
1 x Suspension bracket for wall mounting
1 x Installation instructions for contractors
1 x Operating instructions for users
1 x Service instructions
1 x Commissioning checklist
1 x Label "G31/G30" (for conversion to LPG)
2 x Cold water/DHW connection elbow (only for combi boiler)
Standarddelivery
Accessories The following accessories are required for installing the gas condensing boiler:
- Air/uegasaccessories(seetechnicalinformation)
- Control unit for room temperature-dependent or weather-compensated control
(AM/BM-2)
- Condensate drain outlet with hose retainer
- Maintenanceshut-offvalvesforheatingowandreturn
- Gasballvalvewithreprotection
- Heating side safety valve
- Safety assembly for DHW
- Locking caps for cylinder connection
(only when using appliances without DHW function)
Other accessories as per pricelist

3064810_201804 5
2. Safetyinstructions
Danger:ifyousmellgas
- Close the gas tap.
- Open the windows.
- Do not operate any electrical switches.
- Extinguish naked flames.
- Phone the gas supply utility company and an ap-
proved contractor from an external location.
Danger:ifyousmelluegas
- Switch OFF the appliance.
- Open windows and doors
- Notify an approved contractor.
Authorised personnel should read these instructions
beforeanyinstallation,commissioningorservicework.
Adhere to the specications in this document. Failure
to observe these installation instructions will void any
WOLFwarranty.
Insomecountries,theinstallationofagasboilermust
benotiedtoandapprovedbytherelevantgassupply
company.
Pleasenotethatregionalpermitsmayberequiredfor
theuesystemandconnectingthecondensatedrainto
thepublicsewer.
Beforeinstallationworkbegins,thelocaluegas
inspectorandwastewaterauthoritymustbeinformed
[checklocalregulations].
The gas condensing boiler must be installed, commis-
sionedandmaintainedbyqualiedandtrainedpersonnel
only.InaccordancewithVDE0105Part1,workonelec-
tricalcomponents(e.g.controlunit)mustonlybecarried
outbyqualiedelectricians.
VDE/ÖVEregulationsandthoseofyourlocalpowersup-
ply utility are applicable to electrical installation work
[Germany/Austria].
Operatethegascondensingboileronlywithinitsoutput
range, which is stated in the technical documentation
suppliedby WOLF.Intended use of the boilerincludes
exclusiveuseforhotwaterheatingsystemsinaccordance
with DIN EN 12828.
Neverremove,bypassorotherwisedisableanysafetyor
monitoringequipment.Operatetheboileronlyifitisin
perfecttechnicalcondition.
Anyfaultsordamagewhichimpactormightimpactupon
safetymustberemediedimmediatelybyaqualiedcon-
tractor.Replacefaultycomponentsandequipmentonly
withoriginalWOLFspareparts.
Dangerfrom„live“electricalcomponents
Nevertouchelectricalcomponentsorcontacts
whentheON/OFFswitchisintheONposition.
Thereisadangerofelectrocution,resultingin
arisktohealthordeath.Themainterminalsare
‘live’,evenwhentheON/OFFswitchisintheOFF
position.
Riskofscalding
Boilersmaycontainhotwater.
Hotwatercancauseseverescalding.
Beforeworkingonpartswhichareincontact
withwater,allowtheappliancetocooltobelow
40°C,shutoffallvalvesand,ifnecessary,drain
the appliance.
Riskofburns
Boilercomponentsmaybeextremelyhot.
Hotcomponentscancauseburns.
Beforeworkingontheopenedupappliance,al-
lowittocoolbelow40°Corwearsuitablegloves.
Symbols
The following warning symbols are used in these instructions.
These relate to personal safety and operational reliability.
Instructions that must be followed precisely in order
to prevent risk and injury to persons.
Instructions that must be followed precisely in order
to prevent risk and injury to persons from live electri-
cal components.
Indicates technical instructions that must be
observed to prevent damage to the boiler and
malfunctions.
Please
note

6 3064810_201804
2. Safetyinstructions
Dangerfrompressurisedwater
Boilersaresubjecttohighwaterpressure.
Waterpressurecancausesevereinjuries.
Beforeworkingonpartswhichareincontact
withwater,allowtheappliancetocooltobelow
40°C,shutoffallvalvesand,ifnecessary,drain
the appliance.
Note:
Sensorscanbeincontactwithwaterandthere-
foreexposedtopressure.
Workingonthesystem
- Close the gas shut-off valve and secure it against uninten-
tional reopening.
- Isolate the system from the power supply (e.g. by remov-
ing the separate mains fuse or by means of a main switch
or a heating emergency stop switch) and check to ensure
there is no voltage.
- Safeguard the system against reconnection.
Inspectionandservice
- Ensure the correct operation of the gas boiler by having a
contractor carry out inspections at least once a year and
maintenance/repair when required.
- (DVGW - TRGI 2008 - G600).
We recommend arranging a suitable maintenance contract.
- The operator is responsible for the safety, environmental
compatibility and energy quality of the heating system
(German Immission Control Act/Energy Saving Ordi-
nance) [Germany].
- Only use genuine WOLF spare parts.

3064810_201804 7
2. Safetyinstructions
Fig: Ignition transformer, high voltage ignition electrode, combustion
chamber
Danger from 'live' electrical components, risk of burning from hot
components
Fig: Gas combination valve
Danger from 'live' electrical components
Risk of poisoning or explosion in the event of gas escaping
Gaskombiventil
Fig: Gas connection: Risk of poisoning or explosion in the event of
gas escaping
Fig: Terminal box: Danger from electrical voltage

8 3064810_201804
Darstellung A3 auf 1:9
TEB-lan
8614060
1
1
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TW05046/14
CGB-2-14
Catia V5 R19
17.07.14 Lan
1:5
344
84
100100
70
440
654
40
31
70
165 261
190
790
378
48
Darstellung A3 auf 1:9
TEB-lan
8614060
1
1
.0,000
TW05046/14
CGB-2-14
Catia V5 R19
17.07.14 Lan
1:5
344
84
100100
70
440
654
40
31
70
165 261
190
790
378
48
3. Dimensions
CGB-2
Wallmountedgascondensingboiler
Ø 60/100
Ø 80/125
Cylinder return
G¾”
Cylinderow
G¾”
Heatingow
G¾”
Heating return
G¾”
Gas connection
R½”
*
Darstellung A3 auf 1:9
TEB-lan
8614060
1
1
.0,000
TW05046/14
CGB-2-14
Catia V5 R19
17.07.14 Lan
1:5
344
84
100100
70
440
654
40
31
70
165 261
190
790
378
48

3064810_201804 9
Darstellung A3 auf 1:9
TEB-lan
V.0000303958
1
1
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23.07.14 Lan
1:9
V.0000303958
84
261
40
31 165
654
70
100100
440
344
7
70
48
378
190
790
3. Dimensions
CGB-2K
Wallmountedgascondensingcombiboiler
Cold water
connection with
connection elbow
G¾”
DHW connection with
connection elbow
G¾”
Heatingow
G¾”
Heating return
G¾”
Gas connection
R½”
*
Darstellung A3 auf 1:9
TEB-lan
V.0000303958
1
1
.0,000
23.07.14 Lan
1:9
V.0000303958
84
261
40
31 165
654
70
100100
440
344
7
70
48
378
190
790
Ø 60/100
Ø 80/125
Darstellung A3 auf 1:9
TEB-lan
V.0000303958
1
1
.0,000
23.07.14 Lan
1:9
V.0000303958
84
261
40
31 165
654
70
100100
440
344
7
70
48
378
190
790

10 3064810_201804
4. Specication
Type CGB-2 14 20 24 - -
CGB-2K - - - 20 24
Rated heating output at 80/60 °C kW 13.5 18.9/22.2 1)
23.8/27.11)
(23.83))
18.9/22.2 1) 23.8/27.11)
(23.83))
Rated heating output at 50/30 °C kW 15.2 20.4 25.8 20.4 25.8
Rated heat input kW 14.0 19.6/23.0
24.6/28.0
(24.6 3))
19.6/23.0 24.6/28.0
(24.6 3))
Lowest heating output (modulating) at 80/60 °C kW 1.8/4.6 2) 3.8/6.8 2) 4.8/6.8 2) 3.8/6.8 2) 4.8/6.8 2)
Lowest heating output (modulating) at 50/30 °C kW 2.1/5.4 2) 4.4/7.4 2) 5.6/7.4 2) 4.4/7.4 2) 5.6/7.4 2)
Lowest heat input (modulating) kW 1.9/4.9 2) 3.9/6.9 2) 4.9/6.9 2) 3.9/6.9 2) 4.9/6.9 2)
Heatingowconnection G ¾" (DN20) ¾" (DN20) ¾" (DN20) ¾" (DN20) ¾" (DN20)
Heating return connection G ¾" (DN20) ¾" (DN20) ¾" (DN20) ¾" (DN20) ¾" (DN20)
DHW connection/DHW circulation G ¾" ¾" ¾" ¾" ¾"
Cold water connection G ¾" ¾" ¾" ¾" ¾"
Gas connection R ½" ½" ½" ½" ½"
Balancedueconnection mm 60/100 60/100 60/100 60/100 60/100
Dimensions Depth mm 378 378 378 378 378
Width mm 440 440 440 440 440
Height mm 790 790 790 790 790
Air/uegasrouting Type B23P, B33P, C13(x), C33(x), C43(x), C53(x), C63(x), C83(x), C93(x)
Gas supply details
Natural gas E/H
(Hi [net cv] = 9.5 kWh/m³ = 34.2 MJ/m³)
m³/h 1.44 2.06/2.42 2.52/2.95 2.06/2.42 2.52/2.95
Natural gas LL
(Hi [net cv]=8.6 kWh/m³ = 31.0 MJ/m³)
m³/h 1.59 2.28/2.67 2.79/3.25 2.28/2.67 2.79/3.25
LPG P (Hi[net cv] = 12.8 kWh/m³=46.1 MJ/m³) kg/h 1.07 1.53/1.80 1.87/2.19 1.53/1.80 1.87/2.19
Natural gas supply pressure (permiss. min./max.) mbar 20 (17-25) 20 (17-25) 20 (17-25) 20 (17-25) 20 (17-25)
LPG supply pressure (permiss. min./max.) mbar
50 (42.5-57.5) 50 (42.5-57.5) 50 (42.5-57.5) 50 (42.5-57.5) 50 (42.5-57.5)
Stdseasonalefciency[toDIN]at40/30°C
(Hi[net cv]/Hs[gross cv])
% 110/99 110/99 110/99 110/99 110/99
Std.seasonalefciency[toDIN]at75/60°C
(Hi[net cv]/Hs[gross cv])
% 107/96 107/96 107/96 107/96 107/96
Efciencyatratedloadat80/60°C
(Hi[net cv]/Hs[gross cv]) % 98/88 98/88 98/88 98/88 98/88
Efciencyat30%partialloadandTR=30°C
(Hi[net cv] /Hs[gross cv])
% 109/98 109/98 109/98 109/98 109/98
Flow temperature, factory setting °C 75 75 75 75 75
Flow temperature up to approx. °C 90 90 90 90 90
Max. overall pressure bar 3.0 3.0 3.0 3.0 3.0
Max. residual head for heating circuit: HE pump (EEI <0.23)
 600l/hpumprate(14kWat∆t=20K) mbar 550 550 550 550 550
 860l/hpumprate(20kWat∆t=20K) mbar - 430 430 430 430
 1030l/hpumprate(24kWat∆t=20K) mbar - - 280 - 280
DHWowrate l/min - - - 2.0-6.5 2.0-8.0
MinimumowpressuretoEN625 bar - - - 0.4 0.65
Specicwaterthroughput"D"at∆t=30K l/min - - - 10.3 13.0
Max. permissible positive DHW pressure bar - - - 10 10
DHW temperature range (adjustable) °C - - - 45-65 45-65
Hot water content of htg. water heat exchanger l 1.3 1.3 1.3 1.3 1.3
Expansion vessel, total capacity l 10 10 10 10 10
Expansion vessel, pre-charge pressure bar 0.75-0.95 0.75-0.95 0.75-0.95 0.75-0.95 0.75-0.95
Flue gas temperature 80/60-50/30 at Qmax °C 62-45 70-50 76-50 70-50 76-50
Flue gas temperature 80/60-50/30 at Qmin °C 30-25 30-25 33-27 30-25 33-27
FluegasmassowrateatQmax g/s 6.2 8.8/10.7 1) 10.9/13.0 1) 8.8/10.7 1)
10.9/13.0 1)
FluegasmassowrateatQmin g/s 0.9 1.8 2.3 1.8 2.3
Available gas fan draught at Qmax Pa 125 135 180 135 180
Available gas fan draught at Qmin Pa 10 14 17 14 17
Flue gas category G52 G52 G52 G52 G52
NOx class 6 6 6 6 6
Amount of condensate at 50/30 °C l/h approx. 1.4 approx. 2.0 approx. 2.4 approx. 2.0 approx. 2.4
pH value of condensate approx. 4.0 approx. 4.0 approx. 4.0 approx. 4.0 approx. 4.0
Power consumption in standby W 3 3 3 3 3
Maximum power consumption W 17-59/45 1) 17-51/63 1) 17-62/88 1) 17-51/63 1)
17-62/88 1)
IP rating IP IPX4D IPX4D IPX4D IPX4D IPX4D
Power supply/fuse/MCB protection 230 V/50 Hz/16 A/B
Total weight kg 33 33 33 35 35
CE designation CE-0085CO0098
ÖVGW quality symbol [Austria] G 2.990
SVGW No. [Switzerland] 14-026-4
1) Heating mode/DHW mode
2) Natural gas/LPG (G31)
3) Applies only to Switzerland
Meets the requirements of proKlima and KfW.

3064810_201804 11
5. Layout
1 Gas fan
2 Expansion vessel
3 Mixing valve
4 Gas valve
5 Trap
6 3-way valve
7 Control unit enclosure
(GBC-e burner control unit, top)
(HCM-2 control unit PCB, bottom)
8 Flue pipe
9 Combustion chamber cover HLSC (thermostat)
10 Combustion chamber temperature sensor
(eHLSC sensor)
11 Burner
12 Heating water heat exchanger
13 Flue gas temperature sensor
14 Pressure sensor
15 Return temperature sensor
16 Boiler water temperature sensor
17 Heating circuit pump with air vent valve
22 Heating return
23 Cylinder return
24 Gas supply pipe
25 Cylinderow
26 Heatingow
CGB-2
Wallmountedgascondensingboiler
1
8
9
10
11
12
13
14
15
16
17
22
23
25
24
26
2
3
4
6
5
7

12 3064810_201804
5. Layout
1 Gas fan
2 Expansion vessel
3 Mixing valve
4 Gas valve
5 Trap
6 3-way valve
7 Control unit enclosure
(GBC-e burner control unit, top)
(HCM-2 control unit PCB, bottom)
8 Flue pipe
9 Combustion chamber cover HLSC (thermostat)
10 Combustion chamber temperature sensor
(eHLSC sensor)
11 Burner
12 Heating water heat exchanger
13 Flue gas temperature sensor
14 Pressure sensor
15 Return temperature sensor
16 Boiler water temperature sensor
17 Heating circuit pump with air vent valve
18 Plate heat exchanger
19 Flow limiter
20 Flow sensor
21 DHW outlet temperature sensor
22 Heating return
23 Cold water connection
24 Gas supply pipe
25 DHW connection
26 Heatingow
CGB-2K
Wallmountedgascondensingcombiboiler
1
8
9
10
11
12
13
14
15
16
17
18
19
20
21
2
3
4
6
5
7
22
23
25
24
26

3064810_201804 13
6. Electronicgas/airmixture
Gas-adaptivecombustionaircontrol
Principle:
The relationship between the actual ionisation current and
excess air is used for combustion control.
The system carries out a continuous set/actual comparison
for the ionisation current.
The control unit adjusts the gas throughput via the electronic
gas valve to match the actual ionisation current to the set value.
Set values for the ionisation current for every output value are
stored in the system.
Calibration:
For all gases, the ionisation current is at
its maximum when Lambda λ(air ratio) = 1
● Thesystemcalibratesautomaticallybybrieyshiftingto
Lambda 1.
● BrieyincreasedCOemissions
Whendoesthesystemcalibrate?
1. Each time the mains supply is switched on.
2. Cyclically after a certain number of burner starts and a
certain burner runtime.
3. After certain faults such as "Flame failure during operation".
CO emissions may be increased during cali-
bration.
Please
note
Fig: Ionisation current control diagram
λ=1,35λ=1
Luftzahl [λ]
Ionisationsstrom [Io]
Io
soll
Regelbereich
Io
max
Airratio[λ]
Ionisationcurrent[Io]
Control range
SET

14 3064810_201804
7. Casing
Casing
First, grip the control unit cover on the r.h. side and swivel to
the side. Then undo the two screws on the r.h. and l.h. sides
of the front casing. The front casing can then be released at
the top and removed.
Fig: Front view, control unit cover fully open
Fig: Front view, control unit cover slightly partially open
Allen screws SW 4

3064810_201804 15
8. Standardsandregulations
Observeallstandardsandguidelinesapplicabletotheinstallationandopera-
tionofthisheatingsysteminyourcountry.
Observetheinformationontheboilertypeplate.
Thefollowinglocalregulationsmustbecompliedwithduringinstallationand
operationoftheheatingsystem:
• Siting conditions
• Ventilation and exhaust air facilities and connection to a chimney
• Electrical connection to the power supply
• Technical regulations of the gas supply utility company regarding the connection of
the gas appliance to the local gas mains
• Regulations and standards regarding the safety equipment of the water heating
system
• DHW installation

16 3064810_201804
8. Standardsandregulations
Thefollowinggeneralregulations,rulesandguidelinesmustbeobservedfor
installationinparticular:
• (DIN)EN806Specicationsforinstallationsinsidebuildingsconveyingwaterfor
human consumption
• (DIN) EN 1717 Protection against pollution of potable water installations
• (DIN) EN 12831 Heating systems in buildings – Method for calculation of the de-
sign heat load
• (DIN) EN 12828 Heating systems in buildings – Design of water-based heating
systems
• (DIN)EN13384Chimneys-Thermalanduiddynamiccalculationmethods
• (DIN) EN 50156-1 (VDE 0116 Part 1) Electrical equipment for furnaces
• VDE 0470/(DIN) EN 60529 Degrees of protection provided by enclosures
(IP rating)
• VDI 2035 Prevention of damage in hot water heating systems
- Scale formation (Sheet 1)
- Corrosion by water (Sheet 2)
 -Corrosionbyuegases(Sheet3)

3064810_201804 17
8. Standardsandregulations
Toprotectagainstscaling,theDHWtemperatureshouldbe
settomax.50°Cwhenthetotalwaterhardnessis15°dH
(2.5mol/m³)orabove.
UndertheDrinking WaterOrdinance[Germany],this is
thelowestpermissiblevalueforDHWtemperatures,asit
practicallyrulesouttheriskoflegionellaproliferationwith
dailyuseofthehotwatersystem(whenaDHWcylinder
≤400lisinstalled–waterinthecylinderisfullyreplaced
within3daysthroughusage.)
Withatotalhardness of20°dHorhigher,theuseof a
watertreatmentfacilityinthecoldwatersupplylinewhen
heatingDHWisessential,inordertoextendmaintenance
intervals.
Evenifwaterhardnessisbelow20°dH,ahigherriskof
scalebuild-upmayoccurlocally,necessitatingsuitable
softeningmeasures.Failuretotakesuchmeasureswill
resultinprematurescalingoftheapplianceandareduc-
tionintheconvenientavailabilityofdomestichotwater.
Thecontractorresponsibleshouldalwayscheckthelocal
conditions.
Theadjustablecylinderwatertemperaturecan
exceed 60 °C. Short-term operation at tempera-
turesabove60°Cmustbesupervisedinorder
topreventscalding.Forpermanentoperation,
appropriate precautions should be taken to
preventdraw-offtemperaturesabove60°C,e.g.
thermostaticvalve.
Fig: Wolf wall-mounted gas condensing boiler
CGB-2...wallmountedgascondensingboiler
Gas condensing boiler to EN 437/EN 13203-1/EN 15502-1/
EN 15502-2-1/EN 60335-1/EN 60335-2-102/EN 62233/EN
61000-3-2/EN 61000-3-3/EN 55014-1, as well as 92/42/
EEC (Efciency Directive) / 2016/426/EU (GasAppliances
Directive), 2014/30/EU (EMC Directive) / 2014/35//EU (Low
Voltage Directive) / 2009/125/EC (ErP Directive) / 2011/65/
EU (RoHS Directive) / Commission Delegated Regulation
(EU) No 811/2013 / Commission Delegated Regulation (EU)
No813/2013,withelectronicignitionandelectronicuegas
temperature monitoring, for low temperature heating and DHW
heatinginheatingsystemswithowtemperaturesupto90°C
and 3 bar permissible operating pressure in accordance with
EN 12828.This Wolf gas condensing boiler is also approved
for installation in garages.
Gascondensingboilersoperatedwithanopen
uemaybeinstalledonlyinroomsthatcomply
withtheappropriateventilationrequirements.
Otherwisethereisariskofasphyxiationorpoi-
soning.Readtheinstallationandmaintenance
instructions before installing the boiler.Also
takeintoconsiderationalltechnicalinformation.
Whenoperatingthe boilerwithLPGuseonly
propane according to DIN 51 622, otherwise
faults may arise when starting and operating
thegascondensingboiler,whichmayleadto
damagetotheapplianceandpersonalinjury.
 ApoorlyventedLPGtankcanleadtoproblems
withignition.Insuchacase,contactthecom-
panythatllstheLPGtank.

18 3064810_201804
9. Positioning
Lateral clearances min. 40 mm
Minimumclearances
We recommend observing minimum clearances to facilitate
inspection and maintenance work on the boiler. This ensures
that adequate inspection and function tests can be carried out
on the appliance.
Theboilermaybeinstalledonlyinroomsthat
areprotectedfromfrost.
The temperature in the installation room must be between
0°C and 40°C.
In addition, all components of the condensing boiler must be
freely accessible from the front. It must be possible to carry
outuegasemissionstests.Ifminimumclearancesandac-
cessibility are not observed, Wolf may stipulate accessibility
for on-site customer service attendance.
Clearancebetweentheboilerandcombustible
materials or components is not required, as
temperatureswillnotexceed85°Cattherated
boiler heating output. However, explosive or
readilyammablematerialsmustnotbeused
intheinstallationroomasthiswouldcausea
riskofreorexplosion.
Theinstallationroomandthecombustionair
supplied to the appliance must be free from
chemicals,e.g.uorineandchlorineorsulphur.
Suchmaterialsarecontainedinsprays,paints,
adhesives,solventsandcleaningagents.Under
unfavourable conditions, these may lead to
corrosion,includingintheuesystem.
Duringboilerinstallation,ensurethatnocon-
taminants(e.g.drillingdust)enterthegasboiler,
asthiscouldleadtoappliancefaults.
Please
note
First determine where the appliance is to be installed.
Forthis,takeintoaccounttheueoutlet,lateralclearances
towards walls and ceiling and any existing connections for gas,
central heating, DHW and electrics.
Operationinwetrooms
In the delivered condition and for room-sealed opera-
tion, the Wolf gas condensing boiler has IP rating IPx4D.
When installing it in wet rooms, the following conditions must
be met:
- Balancedueoperation
- Compliance with IP rating IP 4D
- All outgoing and incoming cables must be routed through
the strain relief cable glands and secured. Tighten the cable
glands securely, to ensure that no water can enter the casing.
Sound insulation: Under certain critical installation conditions
(e.g. installation on a drywall), additional measures may be
necessary to soundproof the boiler. In such conditions, use
anti-vibration rawl plugs and, if necessary, rubber mounts or
insulation strips.
Fig: Minimum clearances

3064810_201804 19
10.Installationdimensions
Flue system
component
60/100
Flue system component
80/125
Suspension bracket
Installation template
Installation panel for
unnishedwalls
Connection panel for
surface mounting
or
DHW Cold water
Heatingow Heating return
Trap connection
Gas connection

20 3064810_201804
10.Installationdimensions
Bild: Bohrlöcher für Einhängewinkel
Seite 12
Bild: Einhängeverstrebung an der Gastherme
1.Mark the Ø12 holes to be drilled for the suspension bracket,
taking into account the minimum clearances.
2.Inserttherawlplugsandtthesuspensionbracketusing
the screws supplied.
3.Hook the boiler onto the suspension bracket using the
mounting stay.
Mounting stay
Fig: Mounting stay on the combi boiler
Fig: Drill holes for suspension bracket
Securingtheappliancewiththesuspension
bracket
Wheninstallingtheappliance,ensurethatthexings
havesufcientload-bearingcapacity.Alsotakeinto
account the condition of the wall,as an escape of
gas or water might result in a risk of explosion and
ooding.
Bild: Bohrlöcher für Einhängewinkel
Seite 12
Bild: Einhängeverstrebung an der Gastherme
min. 552 mm
Ceiling