Wolf CGB-2 Series Istruzioni operative
GB
IE
WOLF GMBH / POSTFACH 1380 / D-84048 MAINBURG / TEL. +49.0.875174-0 / FAX +49.0.875174-1600 / www.WOLF.eu
Art.-Nr.: 3064812_201804 Subjecttotechnicalmodications
Serviceinstructionsforcontractors
Gas condensing boilers
CGB-2 (K)
CGW-2
CGS-2 L/R
from 2016 on
2 3064812_201804
Tableofcontents
1. Safety instructions...................................................................................3
2. Checking fault messages ........................................................................6
3. CGB-2 appliance description...................................................................7
4. CGB-2K appliance description ................................................................8
5. CGW-2 appliance description..................................................................9
6. CGS-2L appliance description...............................................................10
7. CGS-2R appliance description.............................................................. 11
8. Maintenance equipment
Maintenance spare parts set.................................................................12
9. Preparing for inspection/
maintenance..........................................................................................13
10. Opening the combustion chamber ........................................................14
11. Checking the burner..............................................................................15
12. Checking the ionisation and ignition electrodes ....................................17
13. Cleaning the heat exchanger ................................................................18
14. Assembling the heat exchanger............................................................20
15. Checking DHW heating.........................................................................22
16. Checking the combustion parameters...................................................23
17. HG control parameters..........................................................................24
18 Maintenance Report..............................................................................25
19 Notes.....................................................................................................26
3064812_201804 3
1. Safetyinstructions
Danger:ifyousmellgas
- 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:ifyousmelluegas
- 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 specications in this document. Failure
to observe these installation instructions voids any
WOLF warranty.
The gas condensing boiler must be installed, commis-
sioned and maintained by qualied and trained person-
nel only. In accordance with VDE 0105 Part 1, work on
electrical components (e.g. control unit) may be carried
out only by qualied electricians.
VDE/ÖVE regulations [Germany/Austria] and those of
your local power supply utility are applicable to electri-
cal installation work.
Only operate the gas condensing boiler 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 accord-
ance with 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 contractor. Replace faulty components and equip-
ment only with original WOLF spare parts.
Dangerfrom„live“electricalcomponents
Nevertouchelectricalcomponentsorcontacts
whentheON/OFFswitchisintheONposition.
Thereisadangerofelectrocution,resultingin
arisktohealthordeath.Themainterminalsare
‘live’,evenwhentheON/OFFswitchisintheOFF
position.
Riskofscalding
Boilersmaycontainhotwater.
Hotwatercancauseseverescalding.
Beforeworkingonpartswhichareincontact
withwater,allowtheappliancetocooltobelow
40°C,shutoffallvalvesand,ifnecessary,drain
theappliance.
Riskofburns
Boilercomponentsmaybeextremelyhot.
Hotcomponentscancauseburns.
Beforeworkingontheopenedupappliance,allow
ittocoolbelow40°Corwearsuitablegloves.
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
4 3064812_201804
1. Safetyinstructions
Dangerfrompressurisedwater
Boilersaresubjecttohighwaterpressure.
Waterpressurecancausesevereinjuries.
Beforeworkingonpartswhichareincontact
withwater,allowtheappliancetocooltobelow
40°C,shutoffallvalvesand,ifnecessary,drain
theappliance.
Note:
Sensorscanbeincontactwithwaterandthere-
foreexposedtopressure.
Workingonthesystem
- 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.
Inspectionandservice
- 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 Ordinance)
[Germany].
- Only use genuine WOLF spare parts.
3064812_201804 5
1. Safetyinstructions
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
Escaping gas may cause poisoning or an explosion
Gaskombiventil
Fig: Gas connection: Risk of poisoning or explosion in
the event of gas escaping
Fig: Terminal box: Danger from 'live' electrical compo-
nents
6 3064812_201804
2. Checkingfaultmessages
Any faults that have occurred during operation can be called up on the ‘Contrac-
tor’ level under ‘Message history’. Press rotary selector 5, select ‘Contractor’,
enter the code and call up ‘Message history’. The last 40 fault messages will be
displayed which can provide the contractor with information for maintenance.
Messagehistoryin
AM or BM-2
Either an AM display module or a BM-2 programming unit can be installed in
the front panel for operating the appliance.
The ON/OFF switch (integrated in the Wolf logo) switches the appliance off
across all poles.
ON/OFFswitch
Operatingmode
Heating mode
Burnerstatus
ON
Status
1
2
3
4
5
Status display Function display
1 - 4 Quick start keys
5Rotary selector with pushbutton function
Front panel with integral
ON/OFF switch
3064812_201804 7
3. CGB-2appliancedescription
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
8 3064812_201804
4. CGB-2Kappliancedescription
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
3064812_201804 9
5. CGW-2appliancedescription
CGW-2
Gascondensingcentre
4
2
1
3
19
17
18
20
21
22
24
26
25
27
28
23
5
6
7
9
8
10
13
11
12
14
15
16
1 Flue pipe
2 Combustion chamber cover HLSC (thermostat)
3 Combustion chamber temperature sensor
(eHLSC sensor)
4 Gas fan
5 Expansion vessel
6 Mixing valve
7 Gas valve
8 Trap
9 3-way valve
10 Control unit enclosure
(GBC-e burner control unit, top)
(HCM-2 control unit PCB, bottom)
11 Plate heat exchanger
12 DHW outlet temperature sensor
13 Non-return valve
14 Heating ow (accessory)
15 Gas supply pipe
16 Heating return (accessory)
17 Burner
18 Heating water heat exchanger
19 Flue gas temperature sensor
20 Pressure sensor
21 Return temperature sensor
22 Boiler water temperature sensor
23 Heating circuit pump with air vent valve
24 Cylinder temperature sensor
25 DHW connection
26 BDF valve/DHW circulation connection
27 Cold water connection
28 Cylinder primary pump
10 3064812_201804
6. CGS-2Lappliancedescription
CGS-2L
Gascondensingcentre
1
19
17
14
18
15
16
20
21
22
24
25
27
26
29
28
30
23
2
3
4
6
5
7
8
9
10
11
12
13
1 Gas fan
2 Expansion vessel
3 Mixing valve
4 Gas valve
5 3-way valve
6 Trap
7 Control unit enclosure
(GBC-e burner control unit, top)
(HCM-2 control unit PCB, bottom)
8 Plate heat exchanger
9 DHW outlet temperature sensor
10 Heating ow
11 Gas supply pipe
12 Heating return
13 DHW circulation connection
14 Flue pipe
15 Combustion chamber cover HLSC (thermostat)
16 Combustion chamber temperature sensor
(eHLSC sensor)
17 Burner
18 Heating water heat exchanger
19 Flue gas temperature sensor
20 Pressure sensor
21 Return temperature sensor
22 Boiler water temperature sensor
23 Heating circuit pump with air vent valve
24 Heating circuit safety valve
25 Non-return valve
26 Cold water connection
27 Cylinder primary pump
28 DHW connection
29 Protective anode
30 Cylinder temperature sensor
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