Wolf CGB-35 Installation Instructions Manual
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Wolf CGB-35 Installation Instructions Manual

Gas fired condensing boilers
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Installation instructions

Gas fired condensing boilers
CGB-35 Boiler
CGB-50 Boiler
Wolf GmbH · Postfach 1380 · 84048 Mainburg · Tel. 08751/74-0 · Fax 08751/741600 · Internet: www.wolf-heiztechnik.de
Document no.: 3061490_0709 Subject to technical modifications.
GB

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Summary of Contents for Wolf CGB-35

  • Page 1: Installation Instructions

    Installation instructions Gas fired condensing boilers CGB-35 Boiler CGB-50 Boiler Wolf GmbH · Postfach 1380 · 84048 Mainburg · Tel. 08751/74-0 · Fax 08751/741600 · Internet: www.wolf-heiztechnik.de Document no.: 3061490_0709 Subject to technical modifications.

  • Page 2: Table Of Contents

    Index Index ................................Page Safety instructions ..............................3 Standards and regulations..........................4-5 Control unit / Function / Operation ........................6-7 Delivered condition / Standard delivery ......................... 8 Layout ..................................9 Positioning information ............................10 Assembly ................................11 Dimensions / Installation dimensions ........................12 Installation ..............................13-16 Installation of a balanced flue system ....................... 17 Power supply ............................18-21 Filling the siphon ............................22 Filling the system............................23 Checking the gas supply pressure .......................24-25 Commissioning ............................26 Setting the BUS address ...........................

  • Page 3: Safety Instructions

    Safety instructions The following symbols are used in conjunction with these important instructions concerning personal safety, as well as technical reliability. "Safety instructions" are instructions with which you must comply exactly, to prevent injury and material losses. Fig.: Terminal box: Danger from electric power Danger through 'live' electrical compon- ents.

  • Page 4: Standards And Regulations

    Wolf Standards: gas fired boilers [where appropriate]. BS 5440: Flues and ventilation of gas fired boilers not Wolf gas fired boilers must only be installed by a re- exceeding 70 kW net: cognised heating contractor. This heating contractor - Part 1: Flues...
  • Page 5 73/23/EEC (Low Voltage Directive), and 89/336/EEC (EMC Directive), with electronic ignition and electronic flue gas temperature monitoring, for low temperature heating and DHW production in heating systems with flow temperatures up to 95 °C and 3 bar design pressure according to DIN EN 12828 part 3. The Wolf gas fired boiler is also approved for installation in garages. Open flue gas fired condensing boilers must only be installed in a room which complies with the appropriate ventilation requirements. Otherwise there is a risk of Fig.: Wolf gas fired condensing boiler...

  • Page 6: Control Unit / Function / Operation

    Control unit / Function / Operation Thermometer ON/OFF switch Reset button DHW temperature selector Pressure gauge Heating water tem- Illuminated ring perature selector ON/OFF switch The gas fired 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 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, flame steady Flashing red Fault DHW temperature selector When gas fired 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 thermostat becomes ineffective when the system is used in conjunction with a...
  • Page 7 Control unit / Function / Operation Setting Winter mode (position 2 to 8) In winter mode, the boiler heats to the temperature selected at the heating water thermostat. According to the pump operating mode, the circulation pump opera- tes 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 position . 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.

  • Page 8: Delivered Condition / Standard Delivery

    Delivered condition / Standard delivery As delivered condition Accessories Gas fired condensing boiler The following accessories are required for the installation of this gas fired condensing boiler: The standard delivery comprises: - Balanced flue accessories 1 Gas fired condensing boiler, fully wired, including casing (see design information) 1 Safety valve, central heating side - Room temperature-dependent or 1 Expansion vessel connection weather-compensated control unit 1 Wall mounting bracket - Condensate drain outlet with hose retainer 1 Installation instructions - Maintenance shut-off valves for 1 Operating instructions primary flow and return 1 Maintenance instructions - Gas ball valve with fire protection facility Additional accessories in accordance with the pricelist.

  • Page 9: Layout

    Layout CGB-35 / CGB-50 Flue pipe Ionisation chamber housing Gas restrictor Fan motor Gas fan Gas:air mixing chamber Intermediate flange with non-return valve Quick-acting air vent valve Ignition and monitoring limiter Temperature electrodes Flow Burner Temperature limiter Combustion chamber Heating water heat exch. Flue gas sensor Insulating ring Displacer body Flow sensor Return sensor Heating circuit pump (auto venting) Gas combination valve Condensate siphon Overflow valve Safety valve plug-in type Connection Power cable Expansion vessel Heating return...

  • Page 10: Positioning Information

    Positioning General notes The CGB wall mounted gas fired condensing boiler is supplied fully wired to a power supply plug. A clearance of 400 mm to the ceiling is recommended to enable inspection and maintenance work on the boiler to be carried out, otherwise adequate inspection and function tests on components cannot be ensured during maintenance. Secure the drain hoses safely with their retaining plate above the drain outlet (siphon). The drain should be able to be inspected easily. The gas fired boiler may only be installed in rooms which are protected from frost. Clearance between the boiler and com- The combustion air supplied to the boiler bustible materials or components is not must be free from chemicals, e.g.

  • Page 11: Assembly

    Assembly Opening the casing lid We recommend you remove the casing lid during ins- tallation. - Pivot the control unit lid down. - Unlock the casing lid with the l.h. and r.h. rotating locking screw. - Release the lower part of the casing lid and unhook at the top. L.h. rotating locking screw R.h. rotating locking screw Mounting the boiler with a mounting bra- Fig.: Open the rotating locking screws cket During the boiler installation ensure that the fixing components are sufficiently strong to carry its weight.

  • Page 12: Dimensions / Installation Dimensions

    Dimensions / Installation dimensions Fig.: Connections 1 Heating flow 2 Gas connection 3 Heating return 4 Condensate drain Fig.: Dimensions Fig.: Dimensions 3061490_0709...

  • Page 13: Installation

    An exception would be cap valves upstream of the Expansion vessel connection expansion vessel. Safety valve There is no factory-fitted safety valve. Route the blow- off line into a drain funnel. Minimum system pressure Fig.: Safety valve, expansion vessel connection 0.75 bar. CGB-35 and CGB-50 are approved exclusively for sealed systems up to 3 bar. The maximum flow tempe- rature is factory-set to 75 °C and may be adjusted to 85 °C, if required. The expansion vessel must be adequately sized in accordance with DIN 4708. Click the control unit into position The control unit can be pivoted into a position of approx. 180° for better access during work behind the unit. 3061490_0709...

  • Page 14: Heating Water

    Dirt trap If appropriate, start with the screed drying program. Install the dirt trap for all systems on site in the return pipe to protect the boiler and pump from coarse dirt and sediments. Sludge separator Install a sludge separator upstream of the boiler in the return pipe of all older systems which are predominantly equipped with steel pipework. Air separator An additional air separator can be installed in larger systems. For CGB-35, the maximum permissible flow rate is 2000 l/h and 2800 l/h for the CGB-50; therefore, never install an additional pump. When using pipes which are permeable to oxygen, e.g. underfloor heating systems, provide system separation by using a heat exchanger. Unsuitable heating water increases the risk of sludge formation and corrosion. This may lead to faults and heat exchanger damage. 3061490_0709...

  • Page 15: Condensate Connection

    Siphon Fig.: Siphon Observe the relevant instructions if you install a neutra- lising system (accessory). Fig.: Neutralising system (accessory) Connection of a 200 litre Wolf DHW cylin- der or third party cylinder Connect the DHW flow and return with a three-way diverter valve or the return pipe of the gas fired boiler. Use a DHW sensor from the Wolf accessory range when connecting a DHW cylinder made by third parties. A detailed description is included with the connection set (accessories).

  • Page 16: Gas Connection

    Install a gas shut-off valve with fire pro- tection in the gas supply line upstream of the Wolf gas fired boiler. Otherwise ex- plosions may occur during a fire. Size the gas supply line in accordance with current regulations.

  • Page 17: Installation Of A Balanced Flue System

    Installation of a balanced flue system For concentric air/flue pipes (balanced flue systems), use only original Wolf com- ponents. Please observe the technical information regarding balanced flue systems prior to installing the flue pipe or the ventilation air connection. Different countries have different regulations.

  • Page 18: Power Supply

    Power supply General notes The installation must be carried out by a The power supply terminals are 'live' even licensed electrical contractor. Observe when the ON/OFF switch has been swit- local regulations and those of the power ched OFF. supply company. Terminal box The control, regulating and safety equipment are fully wired and tested.

  • Page 19: Dhw Sensor Connection

    - Observe the cylinder installation instructions. Fig.: Blue plug, cylinder sensor connection Connection DHW circulation pump/ external accessories (230 V AC) Netz MAINS Insert the cable glands into the terminal box. Insert and secure the cable through the cable gland. Connect the DHW circulation pump 230 V AC, which is part of the Wolf accessory range, to terminals L1, N Fig.: Connection DHW circulation pump/external accesso- ries Connection output A1 (230 V AC; 200 VA) Netz MAINS Insert the cable glands into the terminal box. Insert and secure the connecting cable through the cable gland. Connect the cable to terminals L1, N and The parameters for output A1 are described in the table on the following page.
  • Page 20 Power supply The functions of output A1 can be scanned and adjusted with Wolf control accessories with eBUS capability. The following functions can be allocated to output A1: Code Explanation No activation of output A1 DHW circulation pump 100% Controller (e.g. BM) activate output A1 when DHW is enabled. Output A1 is constantly activated when no controller is installed. DHW circulation pump 50% Controller (e.g. BM) cycles output A1, when DHW is enabled. 5 minutes ON and 5 minutes OFF. Output A1 is cycled constantly in 5 minute intervals when no controller is installed. DHW circulation pump 20% Controller (e.g. BM) cycles output A1, when DHW is enabled. 2 minutes ON and 8 minutes OFF.
  • Page 21 Connection input E1 (24 V) Connect the cable for input 1 at terminals E1 in ac- cordance with the wiring diagram; first remove the jum- per between a and b from the respective terminals. Fig.: Connection of room thermostat The functions of input E1 can be scanned and adjusted with Wolf controllers with eBUS capability. The following functions can be allocated to input E1: Code Explanation No function Input E1 is not taken into consideration by the control unit.

  • Page 22: Filling The Siphon

    Filling the siphon Filling the siphon - Remove the siphon. - Fill the siphon with water. - Install the siphon. Siphon Fig.: Siphon 3061490_0709...

  • Page 23: Filling The System

    Filling the system Fill the system and vent it properly, to safeguard the perfect function of the gas fired condensing boiler. Before connecting the gas fired conden- sing boiler to the heating system, flush the entire system to remove residues such as welding pearls, hemp, putty, ON/OFF switch Reset button Thermomanometer etc.

  • Page 24: Checking The Gas Supply Pressure

    Checking the gas supply pressure Checking the gas supply pressure Work on gas components MUST ONLY be preformed by a registered gas fitter. Work which is carried out incorrectly may lead to gas escaping, resulting in a risk of ex- plosion, asphyxiation or poisoning.
  • Page 25 Checking the gas supply pressure Natural gas: If the supply pressure lies outside the 18 to 25 mbar range, adjustments must not be carried out and the boiler must not be taken into use. There is a risk of the equipment malfunctioning.

  • Page 26: Commissioning

    Commissioning The initial start-up and operation of the boi- ler as well as the user instruction must only be carried out by a qualified contractor. - Check the boiler and system for leaks. Prevent water leaks. - Check the location and seating of all fitted parts.

  • Page 27: Setting The Bus Address

    Setting the BUS address Setting the BUS address (only for the KM controller) When operating several boilers (number of boilers >1) in conjunction with a cascade module KM, set the eBUS address of each boiler in accordance with the table below. BUS address setting: Hold down the reset button; after 5 seconds, the corresponding flashing code will be displayed (see table). Select the corresponding address with the DHW temperature rotary selector. Release the reset button again. Boiler BUS address Rotary selector position Illuminated ring display Individual boiler flashing green (factory setting) Boiler cascade Boiler 1 flashing red Boiler 2 flashing yellow Boiler 3 flashing yellow/red Boiler 4 flashing yellow/green 3061490_0709...

  • Page 28: Displaying/Modifying Control Parameters

    To prevent damage to the heating system, Modifications must only the carried out by cancel night setback when outside tempe- a recognised heating contractor or by Wolf ratures fall below -12 ° C. If this rule is not customer service.

  • Page 29: Adjusting The Modulating Pump

    Settings of column 1 are suitable for control accessories ART and AWT. Settings of column 2 are suitable for Wolf control systems with BM (programming unit) modulating pump Grundfos modulating pump class A Wilo Parameter Unit Factory setting Factory setting GB16 HG16 Minimum pump speed, CGB-35: 20 CGB-35: 55 CGB-50: 35 CGB-50: 55 heating mode GB17 HG17 Minimum pump speed, CGB-35: 43 CGB-35: 82 CGB-50: 63 CGB-50: 86...

  • Page 30: Limiting The Maximum Output

    Limiting the maximum output CGB-35/CGB-50 Output setting (parameter GB04) The output setting can be modified with Wolf control accessories with eBUS capability. The heating output will be determined by the gas fan speed. By reducing the gas fan speed in accordance with the table, the maximum output will be matched at 80/60°C for natural gas E / H/LL and LPG. CGB-35 Heating output (kW) Display value CGB-50 Heating output (kW) Display value Table: Output setting Limiting the maximum output relative to a flow/return temperature of 80/60 °C Settings for parameter GB04 with Wolf connection accessories with eBUS capability in [%] 3061490_0709...

  • Page 31: Testing The Combustion Parameters

    Testing the combustion parameters Test the combustion parameters with the boiler doors closed. Testing the combustion air - Remove the screw from the r.h. test port. Flue gas Air supply test port test port - Open the gas shut-off valve. - Insert the test probe. - Start the gas fired condensing boiler and turn the heating water temperature selector to the emissions test symbol (illuminated status display ring flashes yellow).

  • Page 32: Settings

    CO2 settings Adjusting the gas:air mixture Carry out the adjustments in the following sequence: At the factory, the gas combination valve has been adjusted for the gas type stated on the type plate. Only adjust the gas combination valve after the system has been changed to a different gas type.
  • Page 33 CO2 settings B) CO adjustment at the lower load (soft start) - Remove the protective screw above the zero point screw with a large screwdriver. - Restart the boiler by pressing the reset button. - Check and correct (if required) the CO2 con- tent approx. 20 s after burner start with the CO2 meter, by fine adjusting the zero point adjusting screw in accordance with the table below. Make this adjustment within 180 s after burner start.

  • Page 34: Commissioning Report

    Commissioning report Commissioning steps Test values or confirmation 1.) Gas type Natural gas H Wobbe-Index ________________ kWh/m³ Betriebsheizwert ________________ kWh/m³ 2.) Gas supply pressure checked? 3.) Gas soundness test carried out? 4.) Balanced flue system checked? Water connections checked for leaks? Fill the siphon 7.) Vented boiler and system? System pressure 1.5 - 2.5 bar? 9.) System flushed? 10.) Heating water hardness between 2 and 11 °dH? 11.) No chemical additives (inhibitors; antifreeze) added? 12.) Entered type of gas and output onto label? 13.) Function test carried out? 14.) Flue gas test: ________________ (°C) Gross flue gas temperature ________________ (°C) Ventilation air temperature ________________...

  • Page 35: Technical Conversion Options Of This Gas Fired Condensing Boiler

    Technical conversion options of this gas fired condensing boiler Wolf offer you the option of matching your gas fired condensing boiler to changing conditions via conversion sets. Conversion to other gas types: from CGB-35 CGB-50 Natural gas H LPG P 86 11 508 86 11 510 LPG P Natural gas H 86 11 507 86 11 509 Gas type conversion High limit safety cut-out STB Boiler Gas type Gas restrictor Flue gas STB...

  • Page 36: Technical Maintenance And Design Information

    Technical maintenance and design information Residual head of the boiler pump An heating circuit pump is integrated into the CGB-35 and CGB-50 which is modulated subject to the burner load. See diagrams for residual head. CGB-35 Residual head with modulated pump Grundfos Maximum modulation level 100% CGB-35 Heating Minimum water/DHW modu- modulation lation level 43% level 20% Flow rate [l/h] CGB-35 Residual head with modulated pump class A...
  • Page 37 Technical maintenance and design information Sensor resistances Temperature [°C] Temperature/pressure drop 0°C / 16325 15°C / 7857 30°C / 4028 60°C / 1244 5°C / 12697 20°C / 6247 40°C / 2662 70°C / 876 10°C / 9952 25°C / 5000 50°C / 1800 80°C / 628 Types of connection...

  • Page 38: Design Information - Balanced Flue System

    Design information Flue gas/ventilation air routing options C13x C33x C43x C33x C53x C93x C43x C83x C83x C93x C33x 3061490_0709...
  • Page 39 Note: Systems C 33x and C 83x are also suitable for installation in garages. Where necessary, adapt the installation examples to the relevant Building Regulations and requirements of your country/region. Discuss any questions relating to the installation, in particular regarding the installation of inspection parts and ventilation apertures, with your local heating engineer. For concentric air/flue pipes (balanced flue systems), only use original Wolf components. 3061490_0709...
  • Page 40 Design information Minimum duct sizes applicable to open and balanced flue operation >30 >20 C93x balanced flue C33x balanced flue B23/B33 open flue inside duct DN 80 or DN 110 inside duct DN 80/125 inside duct DN 80 or DN 110 C93 x balanced flue system DN 80/125 horizontal DN 100 or DN 80 vertical Balanced flue routing; (rigid) inside a duct Minimum duct sizes Round Ø Rectangular DN 80 150 mm 130 mm DN 110 190 mm...
  • Page 41 General notes If no specific fire resistance is required for the ceiling, route the combustion air supply Particularly for safety reasons, use only original Wolf and flue gas pipes between the top edge of components for concentric air/flue pipes (balanced the ceiling and the roof skin inside a duct flue systems).
  • Page 42 Design information Flue gas temperature limiter Calculating the balanced flue pipe length The calculated length of a balanced flue system or the The electronic flue gas temperature limiter switches flue pipe is derived from the straight pipe length and the the boiler off when the flue gas temperature exceeds 110 °C. length of the installed pipe bends. In this calculation, a 90° bend or a 90° tee piece is calculated as being The boiler restarts when the reset button is pressed.
  • Page 43 Design information Balanced flue routing, vertical and concentric (examples) 1 Gas fired condensing boiler 2 Gas fired condensing boiler con- nection DN 80/125 3 Balanced flue incl. inspection aperture DN 80/125 (250 mm long) 4 Balanced flue DN80/125 500 mm 1000 mm 2000 mm 5 Spacer clip 6 Fixing bracket DN125...
  • Page 44 Design information Horizontal concentric balanced flue pipe C33x, C53x and B33 and flue pipe on an outside wall (examples) Dormer 1 Gas fired condensing boiler 2 Gas fired condensing boiler connection DN 80/125 Horizontal balanced flue rou- ting through a pitched roof 3 Balanced flue incl. inspection aperture DN80/125 (250 mm long) 4 Balanced flue DN80/125...
  • Page 45 - Flue DN 80 - Concentric balanced flue DN 80/125 - Flue DN 110 - Concentric balanced flue (on an external wall) DN 80/125 - Flue, flexible DN 83 The necessary type plates are supplied with the respective WOLF accessory. Observe all additional installation instructions included with accessories. Otherwise there is a risk of equipment malfunction and damage. 3061490_0709...
  • Page 46 Design information Eccentric balanced flue Install the balanced flue distributor 80/80 mm eccentri- The flue pipe can be routed in DN 80, following the cally (31) for separate air supply and flue pipe routing. support bend (23), inside the duct. A flexible flue pipe When connecting a balanced flue which has Building DN 83 can be connected downstream of the support Regulations approval, observe the certification of the bend (23).
  • Page 47 Design information Supplementary installation notes min. Flat: Affix the ceiling outlet approx. Ø 130 mm (14) in Install all horizontal flue pipes with the roof cover. approx. 3° slope (6 cm/m) towards Pitched: At (11), observe the installation instructions on the the boiler. Any condensate must hood, regarding roof pitches. be returned to the boiler. Install the centring triangles near Insert the roof outlet (13) from above through the roof and the end of the pipe. secure vertically with (9) on a rafter or on the brickwork. During installation, slide the separator (8) fully into the coupling. Install the roof outlet only in its original condition. Push the next balanced flue pipe (4) 50 mm (dim. "S") into the Modifications are not permissible. coupling of the separator, and secure in this location, e.g. with pipe clips DN 125 (5) or a fixing screw on the air inlet side. Secure the support bend (23) on the support rail (22) Secondary ventilation If an inspection aperture is required for the balanced flue pipe, * Observe the installation instructions for the flue gas...
  • Page 48 Connection to a moisture-resistant balan- Original Wolf components have been optimised over ced flue chimney type C43x (LAS) many years and are matched to Wolf gas fired con- densing boilers. When using third party equipment, Straight balanced flue pipes may be a maximum of...
  • Page 49 Design information General considerations on hydraulics Notes A variable speed pump is integrated into the boiler. This - Residual head: pump modulates subject to burner output. An overflow If the residual head of the boiler is insufficient, use valve ensures the minimum circulation and largely pre- a low loss header or connect one mixer circuit per vents flow noises in the system. The integral pump and injection control. the overflow valve result in the previously illustrated residual head. - Underfloor heating: Provide system separation in underfloor heating systems with plastic pipes which are permeable to oxygen.
  • Page 50 Design information Prohibited designs Direct connection of an external pump Reason: - The flow velocities inside the boiler exceed the per- missible values. - Raising the pump rate by directly connecting an ex- ternal pump serves no purpose. It is more effective to use a low loss header or an injection control. - This type of connection affects the boiler flow moni- toring. The boiler may malfunction. Direct connection of a mixer circuit without hydraulic decoupling Reason: - The permissible boiler flow velocity will be exceeded if the three-way mixer is fully opened. - This affects the boiler flow monitoring. The boiler may malfunction. Install a sufficiently large bypass between the flow and return in the mixer circuit to provide the decoupling (see the description of the injection control). 3061490_0709...
  • Page 51 Direct connection of a mixer circuit via injection control Applications Vital installation requirements: The injection control will be used if a mixer circuit with - Insert a dummy plug into the three-way mixer (see pump is to be directly connected (i.e. without low loss diagram). header) to a CGB-35/50. The injection control offers many benefits compared with a conventional dual shunt - Size the mixer circuit pipework correctly (see table). pump control. - Match up the mixer circuit and possibly any existing consumer circuits (see diagram) with reducers, the- Description reby preventing supply shortages for the individual...
  • Page 52 Design information Design example - Injection control The safety valve is in- tegrated into the boiler Abb. Product Boiler type CGB-35/50 Check valve - opening pressure 20 mbar Heating circuit connection set comprising: 2 ball valves 1" HKAS 2 fill & drain valves Dirt trap 1¼“ DV 1,2 Reducer Ball valve 1" Dummy plug - same internal diameter as the mixer up to 45 kW with injection control DN 20 k 6,3 (heating curve distance 10 K) Three-way mixer > 45 kW with injection control DN 25 k (heating curve distance 10 K) Mixer motor Flow sensor (part of the standard delivery of the MM control unit - weather-compensated thermostat incl. flow sensor Pipework...
  • Page 53 Design information Design example - Low loss header Applications The use of a low loss header as an alternative to the injection control is advisable if particularly high flow rates are to be employed on the central heating side and if an external pump without mixer is connected. Furthermore use a low loss header, if several CGB-35 or CGB-50 are to be joined together into one hydraulic cascade. Diagram Abb. Product Boiler type CGB-35/50 Flat packing 1¼“ Reducer Check valve / Gravity brake The safety valve Heating circuit connection set is integrated into comprising: the boiler HKAS 2 ball valves 1" 2 fill & drain valves Pipework Dirt trap 1¼“ Ball valve 1“ Low loss header up to 4.5 m³/h Low loss header up to 10 m³/h control unit - weather-compensated thermostat Important installation requirements Install a reducer into the boiler circuit for matching the flow rate to requirements. This avoids the need for undesirable...

  • Page 54: Wiring Diagram

    Wiring diagram 3061490_0709...

  • Page 55: Specification

    Specification Type CGB-35 CGB-50 Nominal output at 80/60 °C 32.0 46.0 Nominal output at 50/30 °C 34.9 49.9 Rated thermal load 33.0 47.0 Lowest output (modulating at 80/60) Natural gas 11.7 Lowest output (modulating at 50/30) Natual gas 12.2 12.9 Lowest thermal load (modulating) Natural gas 11.7 12.4 SEDBUK Natural gas band band SAP Seasonal Efficiency Natural gas 90.4 90.3 91.4 91.4 Outside diameter heating flow 1¼" 1¼" Outside diameter heating return 1¼" 1¼"...

  • Page 56: Troubleshooting

    Troubleshooting All faults will be displayed as a fault code by Wolf controllers with eBUS capability. To these faults, cause and remedy may be allo- cated by means of the following table. This table is designed to allow your local heating contractor to trace the fault more easily. Fault Fault Cause Remedy code TBV Excess temperature The flow temperature has exceeded the limit for Check system pressure/heatingcircuit TBV shutdown. pump. Check the HC pump step switch. Vent the heating system. Press the reset Heat exchanger severely contaminated. button. Clean the heat exchanger. Water pressure too low Water pressure switch trips at < 1.0 bar pressure Check TB combustion chamber. Increase system pressure. No flame is established No flame established during the burner start. Check the gas supply pipe and open the gas shut-off valve, if necessary. Check the ignition electrode and cable. Press the reset button. Flame failure during Flame failure within 15 s after flame recognition. C heck CO values. operation C heck ionisation electrode and cable. Press the reset button. DHW excess tempera- The flow/return temperature has exceeded the Check system pressure. ture limit for TW shutdown.
  • Page 57 Troubleshooting CRC fault, BCC Faulty boiler coding card Replace parameter plug BBC missing Boiler coding card was removed Korrekten Parameterstecker wieder aufstecken CRC fault, BCC Faulty boiler coding card Replace parameter plug Incorrect BCC The boiler coding card is incompatible with the Refit the correct parameter plug control unit PCB BCC no. invalid Faulty boiler coding card Replace parameter plug BCC system error Faulty boiler coding card Replace parameter plug Flow monitoring Return temperature > flow + 25 K. Vent the heating system, check the sy- stem pressure.Check the heating circuit pump. Activation of boiler co- The parameter plug must still be enabled Press reset 2x ding card Activation of boiler co- The parameter plug must still be enabled Press reset 2x ding card Ionisation current The siphon or the flue gas system is blocked Clean siphon, check the flue gas system, fluctuates severe storm.

  • Page 58: Notes

    Notes 3061490_0709...
  • Page 59 Notes 3061490_0709...

  • Page 60: Ec Declaration Of Conformity

    Déclaration de conformité au modèle type CE Ci-joint, nous confirmons, que les chaudières murales à gaz Wolf et les chaudières a gaz Wolf sont conformes aux modèles type CE, et qu’elles correspondent aux exigences fondamentales en vigueur de la directive du 29-06-1990 par rapport aux installations alimentées de gaz (90/396/CEE). Dichiarazione di conformita campione di costruzione - EG Con la presente dichiariamo che le nostre caldaie Murali a Gas Wolf e le caldaie a Gas Wolf corrispondono al e campioni di costruzione, come sono descritte nel certificato di collaudo EG „campione di costruzione“ e che esse soddisfano le disposizioni in vigore nella normativa: 90/396/EWG apparecchiature a Gas. EG-konformiteitsverklaring Hierbij verklaren wij dat de Wolf gaswandketels alsmede de Wolf atmosferische staande gasketels gelijkwaardig zijn aan het model, zoals omschreven in het EG-keuringscertificaat, en dat deze aan de van toepassing zijnde eisen van de EG-richtlijn 90/396/EWG (Gastoestellen) d. d. 29.06.90 voldoen. Declaración a la conformidad del tipo - CE Por la presente declaramos que las calderas murales Wolf al igual que las calderas atmosfericas a gas corresponden a la certificacion CE y cumplen la directiva de gas 90/396/CEE del 29.06.1990. Wolf GmbH Industriestraße 1 D-84048 Mainburg Gerdewan Jacobs Dr. Fritz Hille Technical Manager Technical Director 3061490_0709...

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Cgb-50

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