Wolf CGB-11 Manuale utente
Installation instructions
Gas red condensing boilers
CGB-11 Boiler
CGB-20 Boiler
CGB-K-20 Combi boiler
CGB-24 Boiler
CGB-K-24 Combi boiler
Art.-Nr. 3061344_201509 Subject to technical modications GB
Wolf GmbH · Postfach 1380 · 84048 Mainburg · Tel. 08751/74-0 · Fax 08751/741600 · Internet: www.wolf-heiztechnik.de
23061344_201509
Index
Safety instructions ........................................................................................................3
Standards and regulations........................................................................................ 4-5
Control unit / Function / Operation............................................................................ 6-7
Dimensions / Transport dimensions ......................................................................... 8-9
Layout....................................................................................................................10-11
Positioning..................................................................................................................12
Assembly....................................................................................................................13
Installation ............................................................................................................ 14-17
Installation of a balanced ue system......................................................18
Power supply ..................................................................................... 19-22
Filling the system.....................................................................................23
Commissioning .................................................................................. 24-25
Checking the gas supply pressure...........................................................26
Filling the siphon / Checking the gas supply pressure.............................27
Displaying / modifying control parameters...............................................28
Limiting the maximum output...................................................................29
Selecting the pump stage ........................................................................30
Testing the combustion parameters.........................................................31
CO2 settings...................................................................................... 32-33
Commissioning report..............................................................................34
Technical conversion options for gas red condensing boiler CGB............................35
Conversion of combi boilers to boilers with cylinder...................................................36
Maintenance......................................................................................................... 37-51
Modulating pump (class A) .........................................................................................52
3-stage-pump .............................................................................................................53
Design information................................................................................................ 54-67
Underoor heating system..........................................................................................68
Technical maintenance and engineering details.........................................................69
Wiring diagram ...........................................................................................................70
Specication ...............................................................................................................71
Troubleshooting..........................................................................................................72
Product che according to Regulation (EU) no. 811/2013..........................................73
Technical parameters according to EU regulation no. 813/2013................................75
EC-Declaration of Conformity to Type........................................................................76
3
3061344_201509
The following symbols are used in conjunction with these
important instructions concerning personal safety as well
as technical reliability.
Safety instructions
This indicates technical instructions which you
must observe to prevent material losses and
boiler malfunctions.
NB
Danger through ‚live‘ electrical components.
Please note: Switch OFF the ON/OFF switch
before removing the casing.
Never touch electrical components or contacts
when the ON/OFF switch is in the ON position.
This brings a risk of electrocution, which may
result in injury or death.
The main supply terminals are ‚live‘ even when
the ON/OFF switch is in the OFF position.
„Safety instructions“ are instructions with which
you must comply exactly, to prevent injury and
material losses.
Fig.: Gas connection: Escaping gas may cause poisoning or the risk
of explosion
Fig.: Terminal box:
Danger from electric power
Fig.: Ignition transformer, high voltage ignition electrode, combustion
chamber
Risk through ‚live‘ electrical components, risk of burning through hot
components
Fig.: Gas combination valve
Danger from electric power
Escaping gas may cause poisoning or the risk of explosion
43061344_201509
Standards and regulations
Note: Please read these instructions carefully before
the installation and keep them in a safe place.
Please also note the technical information in
the appendix.
Requirements
The installation of the boiler must be in accordance with the
relevant requirements of Gas Safety (Installation and Use)
Regulations 1998, Health and Safety Document No. 635 (The
Electricity at Work Regulations 1989), BS 7671 (IEE Wiring
Regulations) and the Water Supply (Water Fitting) Regula-
tions 1999, or The Water Bylaws 2000 (Scotland). It should
also be in accordance with the relevant requirements of the
Local Authority, Building Regulations, including amendments
to the Approved Documents Part L and J 2002, The Building
Regulations (Scotland), The Building Regulations (Northern
Ireland) and the relevant recommendations of the following
British Standards:
BS 5440: Flues and ventilation of gas red boilers not ex-
ceeding 70 kW net:
- Part 1: Flues
- Part 2: Ventilation
BS 5449: Specication for forced circulation hot water for
domestic premises.
BS 5546: Specication for gas hot water supplies for do-
mestic premises.
BS 6700: Services supplying water for domestic use within
buildings and their curtilages.
BS 6798: Specication for installation of gas red boilers
not exceeding 60 kW input.
BS 6891: Specication for installation of low pressure gas
pipework up to 28 mm (R1“) in domestic premises
(2nd family gas).
BS 7593: Treatment of water in domestic hot water central
heating systems.
Institute of Gas Engineers Publication IGE/UP/7/1998:
„Guide for gas installations in timber framed housing“
Important: The appliance must be installed and serviced by
a competent person as stated in the Gas Safety (Installation
and Use) Regulations 1998. In IE, the installation must be in
accordance with the current edition of I.S,813 ´Domestic Gas
Installations´, the current Building Regulations and reference
should be made to the current ECI rules for electrical instal-
lation.
When tightening or loosening threaded connections always use
suitable open-ended spanners (not pipe wrench, or extensions,
etc.). Incorrect use and/or unsuitable tools can lead to damage
(e.g. gas or water leaks)!
Any damage or loss resulting from technical modi-
cations to the control unit or to the control compo-
nents are excluded from our liability.
Incorrect use can lead to a risk to life and limb or
to a risk of material losses.
Obtain the permission of your mains gas supplier and ue
gas inspector prior to the installation of Wolf gas red
boilers [where appropriate].
Wolf gas red boilers must only be installed by a recognis-
ed heating contractor. This heating contractor will also be
responsible for the proper installation and commissioning of
the heating system.
The following regulations, rules and guidelines must be ob-
served during installation:
- VDE 0722 / EN50165 Electrical equipment of heat gene-
rators with non-electrical heating
systems.
- DIN EN 12828 Heating systems in buildings, desi-
gning hot water heating systems
- EN 60335-1 Safety of electrical equipment for
domestic use and similar purposes
- VDE 0470 / EN 60529 Protection through housings
5
3061344_201509
Gas red condensing boiler CGB-...
Gas red condensing boilers according to DIN EN 297 / DIN
3368 T5,T6,T7,T8 / DIN EN 437 / DIN EN 483 (draft)/ DIN EN
677 (draft) / DIN EN 625 and Gas Appliance Directive 90/396/
EEC (Gas Consumer Equipment), 92/42/EEC (Boiler Efciency
Directive), 2006/95/EG (Low Voltage Directive), and 89/336/
EEC (EMC Directive), with electronic ignition and electronic
ue gas temperature monitoring, for low temperature heating
and DHW production in heating systems with ow temperatures
up to 95 °C and 3 bar design pressure according to DIN EN
12828 part 3.
The Wolf gas red boiler is also approved for installation in
garages.
Standards and regulations
Open ue gas red condensing boilers must
only be installed in a room which complies with
the appropriate ventilation requirements. Other-
wise there is a risk of asphyxiation and poiso-
ning. Read these installation and maintenance
instructions before installing the boiler. Also
take the Technical Guide into consideration.
Poorly vented LPG tanks can lead to ignition
problems. In such cases, contact your local
LPG supplier.
Fig.: Wolf gas red condensing boiler
To save energy and protect against scaling if
the total hardness is greater than 2.5 mol/m³,
the DHW temperature may be set to a maximum
of 50 °C.
If the total hardness is greater than 3.58 mol/m³,
we recommend using a water treatment facility
in the cold water supply line for DHW heating,
to prolong the maintenance interval (descaling
DHW heat exchanger).
63061344_201509
Control unit / Function / Operation
DHW temperature selector
When gas red condensing boilers are combined with a DHW cylinder, setting 1 - 9
corresponds to a cylinder temperature of 15 - 65 °C. The setting on the DHW thermo-
stat becomes ineffective when the system is used in conjunction with a digital room
thermostat or a weather-compensated controller. The temperature will then be selected
at the controller (accessories). With combi boilers, setting 1 - 9 corresponds to a DHW
temperature of 40 - 60 °C.
Heating water temperature selector
The factory setting range 2 - 8 corresponds to a heating water temperature of 20 - 75 °C.
The setting on the heating water thermostat becomes ineffective when the system is used
in conjunction with a digital room thermostat or a weather-compensated controller.
ON/OFF switch
The gas red boiler is OFF in position 0.
Reset
A fault is reset by pressing the reset button which will also restart the system. Pressing
the reset button reactivates the system, if there was no fault.
Illuminated ring as status indicator
0I
9
1
28
37
46
5
28
3
7
4
6
5
Display Explanation
Flashing green Standby (power supply ON, no heat demand)
Constant green Heat demand: pump running, burner OFF
Flashing yellow Emissions test mode
Constant yellow Burner ON, ame steady
Flashing red Fault
ON/OFF switch DHW temperatu-
re selector
Pressure gauge
Reset
button
Heating water tem-
perature selector
Illuminated ring
Thermometer
7
3061344_201509
Control unit / Function / Operation
Note: The number of times the gas boiler can be started in heating mode is limited electro-
nically. This limit can be bypassed by pressing the reset button. Then, the equipment
starts immediately, as soon as a heating demand is present.
In summer mode, the circulation pump operates for approx. 30 seconds after a maximum
idle period of 24 hours.
Anti-seizing
pump protection
Thermomanometer
The current heating water temperature is displayed in the top half. The water pressure
in the heating system is displayed in the lower half. In normal use, the water pressure
should be between 2.0-2.5 bar.
Setting Winter mode (position 2 to 8)
In winter mode, the boiler heats to the temperature selected at the heating water thermo-
stat. According to the pump operating mode, the circulation pump operates constantly
(factory setting) or only in parallel with the burner activation/run-on time.
Summer mode
Winter mode is deactivated by rotating the heating water temperature selector into po-
sition . In other words, the equipment will then operate in summer mode. Summer
mode (central heating OFF) means = only DHW heating. Frost protection for the central
heating system and pump anti-seizing protection are, however, assured.
Emissions test mode
The emissions test mode is activated by rotating the heating water temperature selector
into position . The illuminated ring ashes yellow. After the emissions test mode
has been activated, the boiler will heat to the selected maximum heating output. Any
previous cycle block will be cancelled. The emissions test mode terminates after 15
minutes or when the maximum ow temperature has been exceeded. For a renewed
activation, turn the heating water temperature selector anti-clockwise and then back
into position .
°C
bar
2
13
120 0
4
0
60
3090
83061344_201509
Dimensions / Transport dimensions
CGB
CGB combined with CSW-120
Fig.: DimensionsFig.: Dimensions
Fig.: Dimensions
200
440
154 144
640 281
32
344
654
40
54
Fig.: Connections
1263 45
DHW ow
Heating ow
Heating return
Heating return
DHW return
Condensate drain
190
855
48
393
270-420790
440
344
810
1800-1950
9
3061344_201509
CGB-K
Dimensions / Transport dimensions
Fig.: DimensionsFig.: Connections
Heating ow
DHW connection (on site)
DHW connection
Gas connection
Cold water inlet
Cold water inlet (on site)
Heating return
Condensate drain
Fig.: Dimensions
70
54 640
65440
32
281
120
200
440
344
Fig.: Dimensions
190
855
48
393
200
120
10
73
165
35 162 min.400
758 281
22
14
123
4567
8
10 3061344_201509
Layout
CGB
Manual air-vent valve
Flue pipe
Limit thermostat
Burner
Heating water heat exch.
Return sensor
Three-way diverter valve
Heating return
DHW ow
Gas supply pipe
Fan motor
Gas fan
Expansion vessel
Gas:air mixing chamber
Inlet pipe
Gas combination valve
Heating circuit pump
(auto venting)
Overow valve
Heating ow
DHW return
TBV/ow sensor
Flue gas temperature limiter
Gas restrictor
Condensate siphon
Limit thermostat
(only for CGB-24)
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