Weishaupt WTC-OB 18-B Manual
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Weishaupt WTC-OB 18-B Manual

Weishaupt WTC-OB 18-B Manual

Oil condensing boiler
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Installation and operating instruction
Oil condensing boiler WTC-OB 18-B
83311002 1/2018-03

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Summary of Contents for Weishaupt WTC-OB 18-B

  • Page 1 Installation and operating instruction Oil condensing boiler WTC-OB 18-B 83311002 1/2018-03...

  • Page 2: Table Of Contents

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B User instructions ...................... 5 1.1   Target group ........................ 5 1.2   Symbols ..........................  5 1.3   Guarantee and Liability .................... 6 Safety  .............................  7 2.1   Designated application .................... 7 2.2   What to do if flue gas can be smelled  .............. 7 2.3  ...
  • Page 3 Installation and operating instruction Oil condensing boiler WTC-OB 18-B 5.6   Electrical connection .................... 30 5.6.1   Wiring diagram  .................... 31 5.6.2   Connect external three way valve .............. 32 5.6.3   Connect external pump  .................. 33 Operation  ..........................  34 6.1   Operating interface .................... 34 6.1.1  ...
  • Page 4 Installation and operating instruction Oil condensing boiler WTC-OB 18-B Servicing .......................... 70 9.1   Notes on servicing  ..................... 70 9.2   Components  ....................... 72 9.3   Servicing display  ...................... 73 9.4   Service positions ...................... 74 9.4.1   Service position A  .................... 74 9.4.2   Service position B .................... 75 9.5  ...

  • Page 5: User Instructions

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 1 User instructions 1 User instructions This manual forms part of the equipment and must be kept on site. Translation of original Carefully read the manual prior to working on the appliance.

  • Page 6: Guarantee And Liability

    Weishaupt parts, force majeure, unauthorised modifications made to the appliance, the installation of additional components, which have not been tested with the...

  • Page 7: Safety

    2.2 What to do if flue gas can be smelled Switch off appliance and turn of the system. Open doors and windows. Notify your heating contractor or Weishaupt Customer Service. 2.3 Safety measures Safety relevant fault conditions must be eliminated immediately.

  • Page 8: Product Description

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 3 Product description 3 Product description 3.1 Type key Example: WTC-OB 18-B VERS. W-PEA Range: Weishaupt Thermo Condens Fuel: Oil Type of construction: floor standing Ratings size: 18 kW Construction VERS. W Version: heating mode and DHW mode VERS.

  • Page 9: Function

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 3 Product description 3.3 Function 3.3.1 Oil carrying parts 1 Nozzle body 2 Connect oil supply 3 Oil filter vent combination 4 Oil pump 9-132 83311002 1/2018-03 La...

  • Page 10: Water And Flue Gas Carrying Parts

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 3 Product description 3.3.2 Water and flue gas carrying parts Image: WTC-OB 18-B VERS. W-PEA 1 Heating circuit flow 2 Heating circuit return 3 Safety valve connection 4 Flue gas connection...

  • Page 11: Electrical Components

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 3 Product description 3.3.3 Electrical components Image: WTC-OB 18-B VERS. W-PEA 1 Flow sensor 2 Boiler electronics WCM-OB-CPU with electrical connection and appliance fuse 3 Combustion air sensor 4 Combustion chamber pressure sensor...

  • Page 12: Safety And Monitoring Functions

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 3 Product description 3.3.4 Safety and monitoring functions Flow sensor eSTB The fuel supply is shut off and the fan and the pump run-on are activated if the tem- perature exceeds 95 °C (W12). The appliance restarts automatically if the temperat- ure drops below the target supply value for 1 minute.

  • Page 13: Program Sequence

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 3 Product description 3.3.5 Program sequence Oil preheating At heat demand 1, the heat exchanger 2 heats the oil in the nozzle assembly. The display shows an H. When a temperature of approx. 45 °C is reached, the temper- ature switch 3 closes.

  • Page 14: Technical Data

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 3 Product description 3.4 Technical data 3.4.1 Approval data Method of installation DIN CERTCO 3R279/... 22349 France and Belgium only Not for Belgium Basic standards EN 267: 2011 EN 303-1: 2003...

  • Page 15: Emissions

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 3 Product description 3.4.5 Emissions Sound levels Dual number noise emission values Measured sound power level L (re 1 pW) dB(A) Uncertainty value K dB(A) Measured sound pressure level L (re 20 μPa)

  • Page 16: Hydraulic Data

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 3 Product description 3.4.7 Hydraulic data Water content version H 11 litres Water content version W and H-0 13 litres Boiler temperature max 85 °C Operating pressure max 3 bar Throughput limit...
  • Page 17 Installation and operating instruction Oil condensing boiler WTC-OB 18-B 3 Product description Resulting supply pressure version H-PEA 100 % 80 % 60 % 40 % 23 % 900 1050 1200 1350 1500 1 Throughput [l/h] 2 Resulting supply pressure [mbar]...

  • Page 18: Flue Gas System Data

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 3 Product description 3.4.8 Flue gas system data Stage 1 Stage 2 Residual supply pressure at flue gas outlet 40 Pa 60 Pa Flue gas mass flow rate 4.8 g/s 7.1 g/s Flue gas temperature at 80/60 °C...

  • Page 19: Dimensions

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 3 Product description 3.4.10 Dimensions 680 mm 730 mm 46 mm 125 mm 159 mm 78 mm 1 Flow fresh water storage G1 2 Return fresh water storage G1 3 Inlet and outlet tap / expansion vessel G¾...

  • Page 20: Installation

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 4 Installation 4 Installation 4.1 Installation conditions Prior to installation ensure that: the minimum distance is maintained [ch. 4.2], the condensate can drain away, the transport route is free and stable [ch. 3.4.11],...
  • Page 21 Installation and operating instruction Oil condensing boiler WTC-OB 18-B 4 Installation Transport The following carrying handles can be used for transport. Screw ¾" pipes to the transport points 1. Minimum clearance Observe minimum distance to the wall for service work.

  • Page 22: Installation

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 5 Installation 5 Installation 5.1 Requirements for the heating water In support of VDI guideline 2035 the following requirements are applicable for heating water. Untreated fill and top-up water must be of domestic water quality (colourless, clear and without any sedimentation).

  • Page 23: Fill Water Quantity

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 5 Installation 5.1.2 Fill water quantity If information about the fill water quantity is not available, the following table can be used to estimate the quantity. For systems with buffer vessels, the buffer content must be taken into account.

  • Page 24: Hydraulic Connection

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 5 Installation 5.2 Hydraulic connection Flush the heating system with at least twice the total system content. Contaminants are removed. Close flow and return (install shut off devices). Fit safety valve.
  • Page 25 Installation and operating instruction Oil condensing boiler WTC-OB 18-B 5 Installation Filling with water Contamination of drinking water Topping up without system separator can contaminate the drinking water. A direct connection between heating and drinking water is not permitted. WARNING Top up heating water via system separator.

  • Page 26: Condensate Connection

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 5 Installation 5.3 Condensate connection Danger of poisoning by escaping flue gas Flue gas can escape if the siphon is not filled. Inhalation leads to dizziness, nausea and eventually death. DANGER...
  • Page 27 Installation and operating instruction Oil condensing boiler WTC-OB 18-B 5 Installation Install siphon Install siphon 1, while pressing the termination well slightly downwards. If there is another siphon downstream of the condensing boiler: Remove cap 2 from the ventilation opening using a knife.

  • Page 28: Oil Supply

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 5 Installation 5.4 Oil supply Observe EN 12514-2, DIN 4755, TRÖI and local regulations. The oil supply is intended for single pipe suction operation. An oil filter vent combination is integrated in the appliance.

  • Page 29: Air Supply / Flue Gas Duct

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 5 Installation 5.5 Air supply / flue gas duct Air supply duct The combustion air can be supplied: from the installation room (room air dependent operation), through concentric piping systems (room air independent operation), through separate air duct in the room (ducted air intake).

  • Page 30: Electrical Connection

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 5 Installation 5.6 Electrical connection Risk of electric shock Working on the device when voltage is applied can lead to electric shock. Isolate the device from the power supply prior to starting any work.

  • Page 31: Wiring Diagram

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 5 Installation 5.6.1 Wiring diagram Observe the instructions for the electrical installation [ch. 5.6]. The maximum total current from all external loads must not exceed 4.5 A. WCM - OB - CPU µC - Unit...

  • Page 32: Connect External Three Way Valve

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 5 Installation 5.6.2 Connect external three way valve Observe the instructions for the electrical installation [ch. 5.6]. Control via output MFA1 or MFA2 Connect three way valve to wiring diagram whilst observing actuator manual.

  • Page 33: Connect External Pump

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 5 Installation 5.6.3 Connect external pump Observe the instructions for the electrical installation [ch. 5.6]. Connect pump to output MFA1, MFA2 or VA1 according to the wiring diagram. Set parameter 13, 14 or 15 to the desired function.

  • Page 34: Operation

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 6 Operation 6 Operation 6.1 Operating interface 6.1.1 Operating panel Open flap on boiler control panel. reset 1 [Enter] select; confirm entry 2 Dial knob navigation through parameter structure; chan- ging values...

  • Page 35: Display

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 6 Operation 6.1.2 Display The display shows the current operating statuses and operating data. Symbols are shown or hidden depending on the system variation. If a remote control (e. g. WCM-FS) is connected, the temperature control is carried out by the remote control.

  • Page 36: User Level

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 6 Operation 6.2 User level Various information can be called up and values set in the User level. Symbols are shown or hidden depending on the system variation. If a remote control (e. g. WCM-FS) is connected, the temperature control is carried out by the remote control.

  • Page 37: User Level Settings

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 6 Operation 6.2.2 User level settings Turn dial knob. Tool bar appears. Turn dial knob. Selection cursor alternates between the symbols. Press [ENTER]. Value set will be shown flashing. Change values using the dial knob and confirm with [Enter].

  • Page 38: Heating Engineer Level

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 6 Operation 6.3 Heating engineer level Activate heating engineer level Turn dial knob. Tool bar appears. Turn the dial knob and set the selection cursor below the spanner symbol. Press [ENTER].
  • Page 39 Installation and operating instruction Oil condensing boiler WTC-OB 18-B 6 Operation 6.3.1 Info level Display system values (i) Activate Info level [ch. 6.3]. Turn dial knob. System values can be read. Depending on system variation, specific values are shown or hidden.
  • Page 40 Installation and operating instruction Oil condensing boiler WTC-OB 18-B 6 Operation Info Actuators Unit Power consumption ignition module (min 70 %) i 25 return signal temperature switch oil preheating – i 28 0: no return signal 1: return signal present...

  • Page 41: Parameter Level

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 6 Operation 6.3.2 Parameter level Display parameter (P) Activate parameter level [ch. 6.3]. Turn dial knob. System values can be read. Depending on system variation, specific parameters are shown or hidden. Change values Press [ENTER].
  • Page 42 Installation and operating instruction Oil condensing boiler WTC-OB 18-B 6 Operation Parameters Basic configuration Setting range Factory setting Function variable output 0: operating retransmission P 15 1: forward reporting of faults 2: feeder pump upstream of hydraulic de-couple 3: heating circuit pump without WCM-FS 4: DHW load pump;...
  • Page 43 Installation and operating instruction Oil condensing boiler WTC-OB 18-B 6 Operation Parameters Heat exchanger Setting range Factory setting Burner capacity stage 1 10 … 70 kW P 36 11.5 for: oil meter calculation Burner capacity stage 2 10 … 70 kW P 37 17.5...
  • Page 44 Installation and operating instruction Oil condensing boiler WTC-OB 18-B 6 Operation Parameters DHW Setting range Factory setting Temperature increase 5 … 30 K P 50 during DHW operation Switching differential -3 … -10 K P 51 Maximum DHW operat- 10 … 60 min...

  • Page 45: Manual Start Up

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 6 Operation 6.4 Manual start up Turn dial knob. Tool bar appears. Set the selection cursor below the chimney sweep symbol. Press [ENTER]. The appliance starts according to the program sequence [ch. 3.3.5].

  • Page 46: Start Manual Configuration

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 6 Operation 6.5 Start manual configuration Manual configuration is used to match the settings with unit version. All sensors and actuators are re-entered during this process [ch. 7.2]. Activate parameter level [ch. 6.3].

  • Page 47: Control Options

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 6 Operation 6.6 Control options Temperature remote control 4 … 20 mA Connect analogue signal 4 … 20 mA to input B1, observe the polarity [ch. 5.6.1]. Signal is interpreted as flow setpoint. In the configuration, t is displayed.

  • Page 48: Constant Flow Temperature

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 6 Operation 6.7 Control options 6.7.1 Constant flow temperature No additional sensors or thermostats are required for this control. The flow temperature is controlled at the value set in the user level [ch. 6.2.2].

  • Page 49: Dhw Operation

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 6 Operation A change in the normal room temperature or setback room temperature by 1 °C leads to a parallel translation of the heating characteristic by approx. 1.5 … 2.5 °C.

  • Page 50: Buffer Control With One Sensor

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 6 Operation 6.7.4 Buffer control with one sensor This type of control makes sense, when only the top part of the buffer is to be filled. The loading of the bottom part of the buffer is carried out by an external heat source.

  • Page 51: Couple Control

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 6 Operation 6.7.6 De-couple control The appliance modulates the capacity in heating operation based on the de-couple temperature. With this control option, the pump modulates between the de-couple sensor B11 and the flow sensor depending on the differential temperature. The function can be adapted to the conditions of the system via parameter 47 .

  • Page 52: Circulation Pump

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 6 Operation 6.8 Circulation pump 6.8.1 General information The appliance (version W) is equipped with a speed controlled pump, which feeds the heating and DHW circuits via a three-way valve. Heating operation The pump remains activated as long as heat demand prevails.

  • Page 53: Speed Controlled Pump

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 6 Operation 6.8.2 Speed controlled pump Standard control With this type of control, the pump capacity is assigned to the required burner stage. When the burner is off, the pump operates at the capacity set in para- meter 44 .

  • Page 54: Frost Protection

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 6 Operation 6.9 Frost protection Boiler frost protection Flow temperature < 8 °C: burner is operated at minimum load, pump is in operation. Supply temperature > 8 °C plus switching differential (parameter 32): burner switches off, pump run-on is activated (parameter 41).

  • Page 55: Inputs/Outputs

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 6 Operation 6.10 Inputs/outputs The inputs and outputs can be configured for various functions. Output MFA1, MFA2 and VA1 Setting parameters 13, 14, 15 Description 0: Forward reporting of operation The contact closes as soon as heat demand is present.

  • Page 56: Commissioning Programs (Parameter 73)

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 6 Operation 6.11 Commissioning programs (parameter 73) General information: Parameter 73 is activated for only 8 minutes after switching on the appliance. If necessary switch on the appliance again, all programs can be terminated by pressing the [reset] button or via OFF . Af- terwards parameter 73 can no longer be selected.
  • Page 57 Installation and operating instruction Oil condensing boiler WTC-OB 18-B 6 Operation Pr8: release combustion chamber pressure for storing During initial commissioning, the current combustion chamber pressures (i 17 and i 18) are automatically stored when exiting program Pr3 and Pr5.

  • Page 58: Special System Parameters

    0.1 … 10.0 Post-purge speed 40 … 100 max flue damper run time 3 … 25 Parameter is safety relevant. Alterations are only permitted following consultation with the Weishaupt service de- partment. 58-132 83311002 1/2018-03 La...

  • Page 59: Chimney Sweep

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 6 Operation 6.13 Chimney sweep The function is used for flue gas measurement. During the chimney sweep function, the appliance runs at maximum capacity. Activate chimney sweep function Turn dial knob.

  • Page 60: Commissioning

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 7 Commissioning 7 Commissioning 7.1 Prerequisite Commissioning must only be carried out by qualified personnel. Only correctly carried out commissioning ensures the operational safety. Prior to commissioning ensure that: all assembly and installation work has been carried out correctly,...

  • Page 61: Connect Measuring Devices

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 7 Commissioning 7.1.1 Connect measuring devices Pressure measuring device for mixing pressure Open pressure test point for mixing pressure 1 and connect pressure measur- ing device. Oil pressure measuring devices on oil pump Vacuum gauge for suction resistance/supply pressure.

  • Page 62: Adjust Condensing Boiler

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 7 Commissioning 7.2 Adjust condensing boiler During commissioning, make sure that: maximum possible water throughput is ensured, heat up at stage 1 is carried out with low flow temperatures. Open fuel shut off devices.
  • Page 63 Installation and operating instruction Oil condensing boiler WTC-OB 18-B 7 Commissioning 3. Carry out commissioning programs (parameter 73) The commissioning programs facilitate professional commissioning during which: the system is vented on the water side, the electrical anti siphon valve is activated to purge the oil lines, stage 1 and stage 2 are set.
  • Page 64 Installation and operating instruction Oil condensing boiler WTC-OB 18-B 7 Commissioning Pr3: set stage 1 Risk of electric shock Touching the ignition device can lead to electric shock. Do not touch ignition device during the ignition process. DANGER Press [ENTER]. Turn dial knob until Pr3 is displayed.

  • Page 65: Check Soundness Of Flue Gas System

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 7 Commissioning 4. Concluding work Oil leakage from oil pressure measuring devices due to constant load Oil pressure measuring devices could be damaged and cause environmental pollu- tion through leakage. WARNING Remove oil measuring devices once commissioning is complete.

  • Page 66: Check Rating

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 7 Commissioning 7.4 Check rating 7.4.1 Delivery status The table shows the delivery status. The burner must be set during commissioning. Stage 1 Stage 2 Burner capacity approx. 11.5 kW approx. 17.5 kW Mixing head ME 1.17 B...

  • Page 67: Readjustment Of Combustion

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 7 Commissioning 7.5 Readjustment of combustion If necessary, the combustion values can subsequently be corrected. Parameter 73 can only be activated within 8 minutes of switching on the appli- ance. Switch on the appliance once again, if necessary.
  • Page 68 Installation and operating instruction Oil condensing boiler WTC-OB 18-B 7 Commissioning 7.6 Check combustion Determine excess air Slowly reduce O content until the combustion limit is reached (CO content approx. 100 ppm or smoke number approx. 1). Measure and document O content.

  • Page 69: Shutdown

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 8 Shutdown 8 Shutdown For breaks in operation: Switching off the appliance. Close fuel shut off devices. If there is a risk of frost drain the system. 69-132 83311002 1/2018-03 La...

  • Page 70: Servicing

    Inspect the system at least once a year, carry out servicing and any repairs as ne- cessary. Clean the heat cell at least every 2 years. Weishaupt recommends annual cleaning. Components, which show increased wear and tear or whose design lifespan is or will be exceeded prior to the next service should be replaced as a precaution [ch. 9.2].
  • Page 71 Installation and operating instruction Oil condensing boiler WTC-OB 18-B 9 Servicing Following servicing Risk of electric shock Touching the ignition device can lead to electric shock. Do not touch ignition device during the ignition process. DANGER Check tightness of oil carrying components.

  • Page 72: Components

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 9 Servicing 9.2 Components In addition to the servicing steps listed in the inspection card, the following com- ponents must be tested for their design lifespan. Components, which show increased wear and tear or whose design lifespan is or will be exceeded prior to the next service should be replaced as a precaution.

  • Page 73: Servicing Display

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 9 Servicing 9.3 Servicing display The time interval to the next service can be set. A flashing spanner will appear in the display when the set interval has expired. Customer service is displayed, if the remote control station WCM-FS is used.

  • Page 74: Service Positions

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 9 Servicing 9.4 Service positions 9.4.1 Service position A Observe notes on servicing [ch. 9.1]. Removing Remove air hose 3 from intake manifold 4, if necessary squeeze air hose to re- lease. Remove hexagonal nuts 1 and remove burner.

  • Page 75: Service Position B

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 9 Servicing 9.4.2 Service position B Observe notes on servicing [ch. 9.1]. Removing Remove air hose 4 from intake manifold 5, if necessary squeeze air hose to re- lease. Remove hose 2 from threaded socket.

  • Page 76: Cleaning The Heat Cell

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 9 Servicing 9.5 Cleaning the heat cell Observe notes on servicing [ch. 9.1]. When cleaning use only plastic brushes (no metal brushes). Make sure that no residues can enter any existing condensate lift pump and / or neutralisation device.
  • Page 77 Installation and operating instruction Oil condensing boiler WTC-OB 18-B 9 Servicing Cleaning the siphon Remove condensate hose 1 Remove siphon 2, while pressing the termination well slightly downwards. Clean siphon. Cleaning the condensate pan Remove disc nuts 1. Slowly lower the condensate pan bracket 4.

  • Page 78: Set Nozzle Distance

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 9 Servicing 9.6 Set nozzle distance Observe notes on servicing [ch. 9.1]. The nozzle distance must be set to 2.5 mm. Place burner into service position A [ch. 9.4.1]. Insert setting gauge and check dimension A (2.5 mm).

  • Page 79: Set Ignition Electrodes

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 9 Servicing 9.8 Set ignition electrodes Observe notes on servicing [ch. 9.1]. Place burner into service position A [ch. 9.4.1]. Set ignition electrodes with the help of the setting gauge, paying attention to the type of mixing head [ch. 7.4.1].

  • Page 80: Replace Oil Nozzle

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 9 Servicing 9.10 Replace oil nozzle Observe notes on servicing [ch. 9.1]. Do not clean nozzles, always fit new nozzles. Place burner into service position A [ch. 9.4.1]. Unplug ignition cable 3. Undo screw 2 and remove mixing head 1.

  • Page 81: Removing And Refitting Nozzle Shut Off

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 9 Servicing 9.11 Removing and refitting nozzle shut off Observe notes on servicing [ch. 9.1]. Removing Remove nozzle. Counter-hold the nozzle assembly 4 using a spanner and remove nozzle holder Remove valve piston 2 and compression spring 3 using a suitable tool (e. g.

  • Page 82: Removing Heat Exchanger And Temperature Switch

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 9 Servicing 9.12 Removing heat exchanger and temperature switch Observe notes on servicing [ch. 9.1]. Unplug plug number 2 and 9. Undo oil lines 5. Remove screw 3 and remove nozzle assembly 2. Remove nozzle [ch. 9.10].

  • Page 83: Removing And Refitting Air Nozzle

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 9 Servicing 9.13 Removing and refitting air nozzle Observe notes on servicing [ch. 9.1]. Removing Place burner into service position A [ch. 9.4.1]. Remove screws 1 and remove air nozzle. Refitting Refit air nozzle in reverse order.

  • Page 84: Removing And Refitting Oil Pump

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 9 Servicing 9.14 Removing and refitting oil pump Observe notes on servicing [ch. 9.1]. Removing Unplug plug number 3 and 4. Remove oil hoses 6, screwed union5 and oil hose 1. Undo screws 4 and remove oil pump.

  • Page 85: Remove Pump Motor

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 9 Servicing 9.15 Remove pump motor Observe notes on servicing [ch. 9.1]. Remove the oil pump [ch. 9.14]. Place burner into service position A [ch. 9.4.1]. Unplug plug number 5. Remove screws 1 and motor.

  • Page 86: Removing And Refitting Fan

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 9 Servicing 9.16 Removing and refitting fan Observe notes on servicing [ch. 9.1]. Removing Unplug plug number 1 and 10. Remove nuts 1 and nuts 6. remove fan and seal 7. Remove screws 2, intake manifold 4 and O ring 5.

  • Page 87: Removing And Refitting Oil Pump Filter

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 9 Servicing 9.17 Removing and refitting oil pump filter Observe notes on servicing [ch. 9.1]. Removing Close fuel shut off devices. Remove bolts 1. Remove pump cover. Replace filter 3 and gasket 2.

  • Page 88: Removing And Refitting Oil Filter Insert

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 9 Servicing 9.18 Removing and refitting oil filter insert Observe notes on servicing [ch. 9.1]. Removing Place oil filter vent combination into service position. Close fuel shut off device 1. Open clamping ring 3.

  • Page 89: Removing And Refitting Three Way Valve

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 9 Servicing 9.19 Removing and refitting three way valve Observe notes on servicing [ch. 9.1]. Removing Close water side shut off devices to the heating system. Drain the appliance on the water side.

  • Page 90: Troubleshooting

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 10 Troubleshooting 10 Troubleshooting 10.1 Procedures for fault conditions Check prerequisites for operation: Voltage supply available. Heating switch is set to On. Remote control station set correctly. The appliance electronics detect irregularities from the appliance and displays them flashing.
  • Page 91 Installation and operating instruction Oil condensing boiler WTC-OB 18-B 10 Troubleshooting Resetting Damage resulting from incorrect fault repair Incorrect fault repair can cause damage to the equipment and injure personnel. Do not carry out more than 2 lockout resets successively.

  • Page 92: Fault Memory

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 10 Troubleshooting 10.2 Fault memory The last 16 faults and the system status at the time of the faults are recorded in the fault history. Display faults Activate the fault level [ch. 6.3].
  • Page 93 Installation and operating instruction Oil condensing boiler WTC-OB 18-B 10 Troubleshooting Interrogating system status Select fault with dial knob. Press [ENTER]. System status when fault occurred is displayed. Turn dial knob to interrogate information. Info System Unit Operating phase –...

  • Page 94: Warning Codes

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 10 Troubleshooting 10.3 Warning codes The following faults must only be rectified by qualified personnel: Warning codes Cause Rectification Temperature at flow sensor > 95 °C Check the water flow (system goes to lockout after 12warnings with...
  • Page 95 Installation and operating instruction Oil condensing boiler WTC-OB 18-B 10 Troubleshooting The following faults must only be rectified by qualified personnel: Warning codes Cause Rectification DHW outlet sensor (B12) defective Check the sensor and cable and replace if ne- cessary...

  • Page 96: Fault Codes

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 10 Troubleshooting The following faults must only be rectified by qualified personnel: Warning codes Cause Rectification Communication to EM#8 or WCM-FS#8 is Check address faulty Check the connection Replace the extension module...
  • Page 97 Installation and operating instruction Oil condensing boiler WTC-OB 18-B 10 Troubleshooting The following faults must only be rectified by qualified personnel: Fault codes Cause Rectification Flame failure during operation Check oil nozzle, if necessary replace (see also W22) [ch. 9.10] Check oil supply Check oil pump, if necessary replace [ch. 9.14]...
  • Page 98 Installation and operating instruction Oil condensing boiler WTC-OB 18-B 10 Troubleshooting The following faults must only be rectified by qualified personnel: Fault codes Cause Rectification Data record error burner Interrupt the voltage supply temporarily, reset appliance if necessary Reset appliance, replace boiler electronics WCM-OB-CPU if occurring re-...
  • Page 99 Installation and operating instruction Oil condensing boiler WTC-OB 18-B 10 Troubleshooting The following faults must only be rectified by qualified personnel: Fault codes Cause Rectification Data record error BCC Replace coded plug Transferring data from coded plug to boiler electronics WCM-OB-CPU: switch off appliance using switch S1.

  • Page 100: Operating Problems

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 10 Troubleshooting 10.5 Operating problems The following faults must only be rectified by qualified personnel: Observation Cause Rectification Oil pump makes severe mech- Oil pump sucks air Ensure oil supply is tight...

  • Page 101: Technical Documentation

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 11 Technical documentation 11 Technical documentation 11.1 Probe and sensor variables DHW outlet sensor Flow sensor Flue gas sensor Buffer sensor De-couple sensor Combustion air sensor External sensor DHW sensor (B3) NTC 5 kΩ...

  • Page 102: Wiring Diagram

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 11 Technical documentation 11.2 Wiring diagram 11.2.1 Burner connection console E-Bus Fan voltage supply Heat exchanger oil preheating Stage 2 oil solenoid valve Stage 1 oil solenoid valve Pump motor Ignition unit Reserve...

  • Page 103: Boiler Electronics Wcm-Ob-Cpu

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 11 Technical documentation 11.2.2 Boiler electronics WCM-OB-CPU 1 Switch S1 (WCM-CUI) 2 Condensate lift pump 3 Circulation pump voltage supply 4 Three way valve actuator (version W) 5 Fan voltage supply 6 Heat exchanger oil preheating 7 Stage 2 oil solenoid valve...

  • Page 104: Project Planning

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 12 Project planning 12 Project planning 12.1 Oil supply Observe EN 12514-2, DIN 4755, TRÖI and local regulations. General information relating to the oil supply Do not use cathode protection system with steel tanks.
  • Page 105 Installation and operating instruction Oil condensing boiler WTC-OB 18-B 12 Project planning Elevated oil level If the suction line is leaking the tank can be siphoned dry. An electric anti siphon valve 1 can prevent this. Observe manufacturers instructions regarding pressure loss caused by anti si- phon valve.

  • Page 106: Spares

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 13 Spares 13 Spares 1.01 1.03 1.28 1.40 1.41 1.39 1.45 1.42 1.02 1.43 1.32 1.44 1.46 1.48 1.04 1.49 1.30 1.02 1.47 1.29 1.33 1.31 1.27 1.26 1.34 1.36 1.37 1.38...
  • Page 107 Installation and operating instruction Oil condensing boiler WTC-OB 18-B 13 Spares Pos. Description Order No. 1.01 Instrument panel 462 011 02 10 7 1.02 Washer Dm.34I x Dm.60A x 3 462 011 02 28 7 1.03 Edge trim plate 401 110 02 08 7 1.04...
  • Page 108 Installation and operating instruction Oil condensing boiler WTC-OB 18-B 13 Spares 1.01 1.03 1.28 1.40 1.41 1.39 1.45 1.42 1.02 1.43 1.32 1.44 1.46 1.48 1.04 1.49 1.30 1.02 1.47 1.29 1.33 1.31 1.27 1.26 1.34 1.36 1.37 1.38 1.25 1.16...
  • Page 109 Installation and operating instruction Oil condensing boiler WTC-OB 18-B 13 Spares Pos. Description Order No. 1.31 Plug – 230V black 716 275 – 230V grey 716 284 – M1 white 716 285 – H1 turquoise 716 276 – H2 red 716 286 –...
  • Page 110 Installation and operating instruction Oil condensing boiler WTC-OB 18-B 13 Spares 2.25 2.02 2.20 2.03 2.24 2.21 2.01 2.03 2.22 2.14 2.05 2.18 2.13 2.06 2.19 2.20 2.07 2.23 2.42 2.19 2.41 2.18 2.40 2.17 2.09 2.10 2.26 2.27 2.49 2.28...
  • Page 111 Installation and operating instruction Oil condensing boiler WTC-OB 18-B 13 Spares Pos. Description Order No. 2.01 Heat exchanger insulation left 462 011 30 62 7 2.02 Heat exchanger insulation right 462 011 30 61 7 2.03 Heat exchanger insulation rear 462 011 30 64 7 2.04...
  • Page 112 Installation and operating instruction Oil condensing boiler WTC-OB 18-B 13 Spares 2.25 2.02 2.20 2.03 2.24 2.21 2.01 2.03 2.22 2.14 2.05 2.18 2.13 2.06 2.19 2.20 2.07 2.23 2.42 2.19 2.41 2.18 2.40 2.17 2.09 2.10 2.26 2.27 2.49 2.28...
  • Page 113 Installation and operating instruction Oil condensing boiler WTC-OB 18-B 13 Spares Pos. Description Order No. 2.43 Turbulator V form 462 011 30 50 7 2.44 Heat exchanger gasket set 462 011 30 47 2 2.45 Service cover complete 462 011 30 49 2 2.46...
  • Page 114 Installation and operating instruction Oil condensing boiler WTC-OB 18-B 13 Spares 3.10 3.40 3.41 3.14 3.29 3.13 3.02 3.06 3.03 3.04 3.05 3.08 3.09 3.07 3.08 3.12 3.19 3.01 3.22 3.20 3.16 3.15 3.43 3.21 3.17 3.24 3.23 3.42 3.38 3.11...
  • Page 115 Installation and operating instruction Oil condensing boiler WTC-OB 18-B 13 Spares Pos. Description Order No. 3.01 Heat exchanger gasket set 462 011 30 47 2 3.02 Flame tube MB 800 245 050 14 15 7 3.03 Boiler door insulation 246 050 01 12 7 3.04...
  • Page 116 Installation and operating instruction Oil condensing boiler WTC-OB 18-B 13 Spares 3.10 3.40 3.41 3.14 3.29 3.13 3.02 3.06 3.03 3.04 3.05 3.08 3.09 3.07 3.08 3.12 3.19 3.01 3.22 3.20 3.16 3.15 3.43 3.21 3.17 3.24 3.23 3.42 3.38 3.11...
  • Page 117 Installation and operating instruction Oil condensing boiler WTC-OB 18-B 13 Spares Pos. Description Order No. 3.44 Plug cable No. 1 fan/mains 246 050 12 01 2 3.45 Plug cable No.10 housing PWM/Hall 246 050 12 08 2 3.46 Flame sensor No.11 KLC 2002 246 050 12 18 2 3.47...
  • Page 118 Installation and operating instruction Oil condensing boiler WTC-OB 18-B 13 Spares 4.01 W-PEA 4.01 4.02 4.02 4.01 4.03 4.03 4.16 4.01 4.02 4.06 4.16 4.03 4.05 4.06 4.02 4.03 4.05 4.03 4.04 4.03 4.03 4.08 4.04 4.10 4.04 4.03 4.08 4.08...
  • Page 119 Installation and operating instruction Oil condensing boiler WTC-OB 18-B 13 Spares Pos. Description Order No. 4.01 Union nut G1 1/2 x 42.2 409 000 04 15 7 4.02 Connection socket G1A x 1 1/2 462 011 40 02 7 4.03 Washer Dm.34I x Dm.60A x 3...
  • Page 120 Installation and operating instruction Oil condensing boiler WTC-OB 18-B 13 Spares 5.01 5.02 5.03 5.05 5.04 5.06 5.07 5.08 5.09 5.09 120-132 83311002 1/2018-03 La...
  • Page 121 Installation and operating instruction Oil condensing boiler WTC-OB 18-B 13 Spares Pos. Description Order No. 5.01 Screwed union G3/8I-L8 x M14 x 1.5 x 47 462 011 30 15 7 5.02 Hexagonal nut BM14 x 1.5 DIN 439 411 701 5.03...
  • Page 122 Installation and operating instruction Oil condensing boiler WTC-OB 18-B 13 Spares 6.01 6.02 6.03 6.04 6.05 6.06 6.07 6.08 6.09 6.11 6.10 122-132 83311002 1/2018-03 La...
  • Page 123 Installation and operating instruction Oil condensing boiler WTC-OB 18-B 13 Spares Pos. Description Order No. 6.01 Plug cable boiler mains voltage 462 011 22 19 2 6.02 Plug cable 3 way change-over valve 462 012 22 18 2 6.03 Plug cable burner mains voltage 462 011 22 23 2 6.04...
  • Page 124 Installation and operating instruction Oil condensing boiler WTC-OB 18-B 13 Spares 7.01 7.02 7.03 7.05 7.04 7.06 7.07 7.08 7.09 7.10 7.10 7.10 7.10 124-132 83311002 1/2018-03 La...
  • Page 125 Installation and operating instruction Oil condensing boiler WTC-OB 18-B 13 Spares Pos. Description Order No. 7.01 Brush set 462 000 00 25 2 7.02 Cleaning kit 462 000 00 24 2 7.03 Cleaning tool straight 462 000 00 26 2 –...
  • Page 126 Installation and operating instruction Oil condensing boiler WTC-OB 18-B 13 Spares 8.01 126-132 83311002 1/2018-03 La...
  • Page 127 Installation and operating instruction Oil condensing boiler WTC-OB 18-B 13 Spares Pos. Description Order No. 8.01 Service kit 462 000 00 23 2 Consisting of: Oil nozzle Ignition electrode set Gasket condensate pan Burner housing gasket 127-132 83311002 1/2018-03 La...

  • Page 128: Notes

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 14 Notes 14 Notes 128-132 83311002 1/2018-03 La...

  • Page 129: Key Word Index

    Installation and operating instruction Oil condensing boiler WTC-OB 18-B 15 Key word index 15 Key word index Connection console .......... 11, 102 Consumption................ 14 Actuator................. 11 Customer service.............. 73 Additives ................ 14 Adjustment .............. 21, 62 Air nozzle................ 83 Air number ................ 68 De-couple control ............ 51, 53 Air supply duct.............. 29...
  • Page 130 Installation and operating instruction Oil condensing boiler WTC-OB 18-B 15 Key word index Flow temperature control .......... 48 Method of installation............ 14 Flue gas connection ............ 10 MFA1 .................. 55 Flue gas mass flow rate............. 18 MFA2 .................. 55 Flue gas measurement............ 68 Minimum clearance............. 21 Flue gas sensor ............ 11, 12 Mixed bed procedure............ 23...
  • Page 131 Installation and operating instruction Oil condensing boiler WTC-OB 18-B 15 Key word index Pump...............  11, 33, 61 Storage.................. 14 Pump control logic.............. 52 Suction resistance ............ 28, 104 Pump filter................ 87 Supply air annular gap .......... 29, 65 Pump motor.............. 11, 85 Supply line .............. 28, 104 Pump pressure ............
  • Page 132 Max Weishaupt GmbH · 88475 Schwendi Weishaupt close by? Addresses, telephone numbers etc. can be found at www.weishaupt.de We reserve the right to make changes. All rights reserved. The complete program: Reliable technology and prompt, professional service W Burners up to 570 kW...

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