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• Page 1
  VIESMANN Installation and service instructions for contractors Vitopend 100-W Type WH1D, 10.7 to 24.8 kW and 13.2 to 31 kW Gas system and combi boilers for balanced flue operation Natural gas and LPG version For applicability, see the last page VITOPEND 100-W Please keep safe.

• Page 2: Safety Instructions

  Safety instructions Safety instructions Please follow these safety instructions closely to prevent accidents and mate- rial losses. Safety instructions explained ■ the Code of Practice of relevant trade associations. Danger ■ all current safety regulations as This symbol warns against the defined by DIN, EN, DVGW, TRGI, risk of injury.

• Page 3
  Touch earthed objects, such as heating or water pipes, to dis- charge static loads. Repair work Please note Repairing components that fulfil a safety function can compromise the safe operation of your heating system. Replace faulty components only with original Viessmann spare parts.

• Page 4: Table Of Contents

  Repairs……………………. 38 Function description Control and display elements…………….44 Heating mode………………….. 44 DHW heating………………….44 Designs Connection and wiring diagram…………….46 Parts lists………………….48 Commissioning/service reports……………. 57 Specification………………….. 58 Certificates Declaration of Conformity for the Vitopend 100-W……….60 Keyword index………………..61…

• Page 5: Product Information

  Set up for operation with natural gas E. May be converted to alternative gas types with a conversion kit. The Vitopend 100-W should generally only be delivered to those countries specified on the type plate. For deliveries to alternative countries, an approved contractor, on his own initiative, must arrange individual approval in accordance with the law of the land.

• Page 6: Installing The Boiler And Making All Connections

  Installation sequence Installing the boiler and making all connections Please note To prevent equipment damage, install all pipework free of load and torque stresses. Note Prepare the gas, water and power connections using the installation template A supplied. Ø10 A Installation template…

• Page 7: Flue Gas Connection

  Installation sequence Installing the boiler and making all connections (cont.) Flue gas connection Prior to installation check whether a flue gas orifice plate is required (see the following table).

• Page 8
  Installation sequence Flue gas connection (cont.) Flue gas orifice plate (internal 7) Routing Type Bal- 24.8 kW 31 kW (de- anced Flue gas + Flue gas + sign) flue sys- ventilation stric- ventilation stric- air pipe air pipe tor 7 length length 60/100…
• Page 9
  Installation sequence Flue gas connection (cont.) Routing Type Bal- 24.8 kW 31 kW (de- anced Flue gas + Flue gas + sign) flue sys- ventilation stric- ventilation stric- air pipe air pipe tor 7 length length 60/100 ≤ 10 ≤ 10 Flue gas over the roof, ventilation air from a differ-…
• Page 10
  Installation sequence Flue gas connection (cont.) A Boiler flue connection bend for the Flue system installation instruc- horizontal installation of a flue sys- tions tem 60/100 B Flue gas orifice plate Note C Coaxial boiler flue connection for the An inspection piece with condensate vertical installation of the flue sys- trap must be installed in the balanced tems 60/100 and 80/125…

• Page 11: Gas Connection

  Installation sequence Flue gas connection (cont.) Opening the flue gas bypass Note Only carry out the flue gas emissions test with fitted cover panel. A Sheet steel knock-out Gas connection 1. Fix gas shut-off valve to gas connec- tion A. Torque 30 ±2 Nm.

• Page 12: Opening The Control Unit Casing

  Installation sequence Gas connection (cont.) 2. Carry out a tightness test. 3. Vent the gas line. Note For the tightness test, use only suita- ble and approved leak detecting agents (EN 14291) and devices. Leak detecting agents with unsuita- ble constituents (e.g. nitrides, sul- phides) can lead to material damage.

• Page 13: Electrical Connections

  Installation sequence Electrical connections PUMP FAN LN1 LN A Fuse 2.5 A (slow) D Potentiometer B Power supply E Accessories power supply (remove C Ionisation cable jumper when connecting) Low voltage plug Plug 230 V~ % Cylinder temperature sensor (if sup- sÖ…

• Page 14
  Installation sequence Electrical connections (cont.) ■ Connect water pipes to the equipoten- tial bonding of the house in question. ■ Max. fuse rating 16 A. ■ Recommended power cable: NYM-J 3 x 1.5 mm , max. fuse 16 A, 230 V~, 50 Hz. Power supply for accessories (on-site) If the boiler is installed in a wet area, the ■…
• Page 15
  Installation sequence Electrical connections (cont.) Note Step 1: Secure power cable to the con- trol unit support with the cable ties sup- plied. Close and flip up the control unit. Hook in and secure the front panel.

• Page 16: Steps — Commissioning, Inspection And Maintenance

  Commissioning, inspection, maintenance Steps — commissioning, inspection and maintenance For further information regarding the individual steps, see the page indicated Commissioning steps Inspection steps Maintenance steps Page • • • 1. Filling and venting the heating system……18 • • •…

• Page 17: Commissioning Steps

  Commissioning, inspection, maintenance Steps — commissioning, inspection and… (cont.) Commissioning steps Inspection steps Maintenance steps Page • • 22. Checking the flue gas routing • 23. Instructing the system user……….. 34…

• Page 18: Filling And Venting The Heating System

  The antifreeze manufacturer must verify its suitability, since oth- erwise damage to gaskets and diaphragms can occur as well as noise dur- ing heating operation. Viessmann accepts no liability for damage or conse- quential damage as a result.

• Page 19: Checking The Gas Type

  Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) ■ Turn rotary selector «tw» approx. 6. Close fill tap in the heating return (on 3 s into the control range and then site). back again. 7. Close the shut-off valves on the heat- The servomotor of the diverter valve ing water side.

• Page 20
  Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Note The cover plate must be fitted to prevent air infiltrating. Operation with LPG Flush the LPG tank twice during commissioning or replacement. Vent the tank and gas supply line thoroughly after flushing. 1.

• Page 21: Checking The Nozzle Pressure

  Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Supply pressure (flow pressure) Action For natural gas H For LPG P Below 17 mbar Below 25 mbar Do not start the boiler. Notify your gas supply utility or LPG supplier. 17 to 25 mbar 25 to 45 mbar Start the boiler.

• Page 22
  Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) 05. Select the upper heating output: 08. Selecting the lower heating out- put: Note Adjust the upper rated heating out- put before selecting the lower rated heating output. The operation with the lower rated heating output is automatically cancelled after approx.
• Page 23
  Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) 13. Turn the rotary selectors «tw» and 14. Open the gas shut-off valve and «tr» back to their original posi- start the appliance. tions. Danger Gas escaping from the test nipple leads to a risk of explosion.

• Page 24: Setting The Maximum Heating Output

  Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Note ■ Air pressure: 1013 mbar The values in the nozzle pressure table ■ Temperature: 15 °C apply to the following ambient condi- tions: Wobbe index see page 19. Setting the maximum heating output Note The maximum output for heating operation can be limited.

• Page 25
  Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) 07. Close and flip up the control unit. 08. Switch OFF the ON/OFF switch on the control unit, close the gas shut- off valve, remove the pressure gauge and close test nipple A. 09.

• Page 26: Checking The Balanced Flue System For Tightness (Annular Gap Check)

  Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Checking the balanced flue system for tightness (annular gap check) The flue pipe is deemed to be sufficiently gas-tight if the CO concentration in the combustion air is no higher than 0.2% or the O concentration is at least 20.6%.

• Page 27
  Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Note Clean the burner if required with com- pressed air or with a soapy solution. Flush with clean water. Installation with new gaskets.

• Page 28: Checking The Diaphragm Expansion Vessel And System Pressure

  Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Checking the diaphragm expansion vessel and system pressure Check the diaphragm expansion vessel pre-charge pressure at test nipple A and recharge if required. Note At the top-up valves, the gas combi boiler can be topped-up using key B supplied.

• Page 29: Checking And Cleaning The Flue Gas Heat Exchanger

  Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Checking and cleaning the flue gas heat exchanger When undoing the fittings on the heating Note water side, counterhold the torque with a Clean the flue gas heat exchanger if second open-ended spanner.

• Page 30: Checking And Adjusting The Ignition And Ionisation Electrodes

  Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Checking and adjusting the ignition and ionisation electrodes +2.5 -3.5 ±2.5 -0.3 Note Clean the ignition electrodes with a small brush or sandpaper.

• Page 31: Flow Limiter

  Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Flow limiter If required, flush flow limiter A with clean water. Identification of flow limiter A Rated heating output Flow rate Colour 10.7 to 24.8 kW 10 l/min Black 13.2 to 31 kW 12 l/min Red Checking all gas equipment for tightness at operating pressure Danger…

• Page 32: Flue Gas Emissions Test

  Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Flue gas emissions test Coaxial boiler flue connection 3. Select the upper heating output (see page 22). Measure the CO or O and CO con- tent. Record the values in the «Reports»…

• Page 33: Checking The Ionisation Current

  Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Checking the ionisation current A Adaptor cable (available as acces- sory) 1. Connect the tester in accordance 4. Switch OFF the ON/OFF switch on with the diagram. the control unit. Operation with the upper rated heat- 2.

• Page 34: Instructing The System User

  Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Instructing the system user The system installer must hand the oper- ating instructions to the system user and instruct him/her in the operation of the system.

• Page 35: Function Sequence And Possible Faults

  Troubleshooting Function sequence and possible faults Display Action Control unit issues Increase set value a heat demand and ensure heat is drawn off Fan starts After approx. 51 s Check the air pres- fault «F5» sure switch, fan, fan connecting ca- bles and power at the fan Ignition…

• Page 36: Fault Messages On The Display

  Troubleshooting Function sequence and possible faults (cont.) Burner in opera- Stops below the set Check the flue sys- tion boiler water tem- tem for tightness perature and re- (flue gas recircula- starts immediately tion) and check the gas flow pressure Fault messages on the display Faults are indicated by a flashing fault code (e.g.

• Page 37
  Troubleshooting Fault messages on the display (cont.) Displayed System characteris- Cause Measures fault code tics Burner in a fault Flame signal is al- Check ionisation elec- state ready present at trode and connecting ca- burner start ble. Switch ON/OFF switch 8 OFF and ON again (or reset, see F2).

• Page 38: Repairs

  Troubleshooting Fault messages on the display (cont.) Displayed System characteris- Cause Measures fault code tics No DHW heating Lead break, cylin- Check the sensor (see der temperature page 40). sensor (gas sys- tem boiler) No DHW heating Lead break, outlet Check the sensor (see temperature sen- page 40).

• Page 39
  Troubleshooting Repairs (cont.) 45° E Heating water flow G Cold water F Heating water return H DHW Check the connections on the DHW side 2. Turn the stepper motor adaptor B for scale build-up and the connections on with stepper motor A anti-clockwise the heating water side for contamination.
• Page 40
  Troubleshooting Repairs (cont.) 4. Install plate heat exchanger D in 5. Reassemble the boiler in reverse order. reverse order using new gaskets. Fixing screw torque: 5.5 Nm. 6. Fill the boiler with water, flush (vent) and check for leaks. Note During installation, ensure that fixing holes are aligned and gaskets seated correctly.
• Page 41
  Troubleshooting Repairs (cont.) % Cylinder temperature sensor (gas system boiler) 1. Temperature limiter: Check the temperature limiter, if the burner control unit cannot be reset after a fault shutdown, although the boiler water temperature is below approx. 90 °C. ■ Pull the leads from the sensor. ■…
• Page 42
  Troubleshooting Repairs (cont.) 2. Boiler water temperature sensor: 4. Cylinder temperature sensor (gas ■ Pull the leads from the sensor. system boiler): ■ Check the sensor resistance and ■ Pull plug % from the control unit compare actual values with the cable harness.
• Page 43
  Troubleshooting Repairs (cont.)

• Page 44: Control And Display Elements

  Function description Control and display elements A Pressure gauge D Rotary selector for heating water B Display temperature E ON/OFF switch C Rotary selector for DHW tempera- ture Heating mode The set boiler water temperature adjus- The boiler water temperature will be ted at rotary selector «tr»…

• Page 45
  Function description DHW heating (cont.) Gas combi boiler If the flow switch recognises that DHW is drawn off (> 3 l/min), the burner and cir- culation pump are switched ON and the three-way valve changes over to DHW heating. The burner modulates to reach the DHW outlet temperature and is limited on the boiler side by the temperature limiter (84 °C).

• Page 46: Connection And Wiring Diagram

  Designs Connection and wiring diagram PCB inside the boiler Vitotrol 100, UTD Gas pressure switch (accessory) Vitotrol 100, UTD-RF Power supply CN8 Stepper motor for diverter valve Vitotrol 100, UTA Ignition transformer and ionisa- tion Vitotrol 100, RT…

• Page 47
  Designs Connection and wiring diagram (cont.) § Boiler water temperature sensor Gas solenoid valve Outlet temperature sensor (only Temperature limiter gas combi boilers) a-Ö Fan Cylinder temperature sensor (only aCA Air pressure switch gas system boilers) aVL Flow switch sÖ Internal circulation pump a:Ö…

• Page 48: Parts Lists

  Parts lists Parts lists Information for ordering spare parts 041 Gas manifold, natural gas Ls Quote the part no. and serial no. (see 042 Gas manifold, LPG type plate) and the position no. of the 043 Flow connection pipe required part (as per this parts list). 044 Return connection pipe Standard parts are available from your 045 Gas supply pipe…

• Page 49
  Parts lists Parts lists (cont.) 108 O-ring 8 x 2 (5 pce) 336 Angle valve for cold water 109 Oval cap seal (5 pce) 337 Locking ring fittings 7 15 and 111 Diaphragm grommet (5 pce) 18 mm 112 Cable grommet (5 pce) 113 Gas connection diaphragm grom- Wearing parts met (5 pce)
• Page 50
  Parts lists Parts lists (cont.)
• Page 51
  Parts lists Parts lists (cont.)
• Page 52
  Parts lists Parts lists (cont.)
• Page 53
  Parts lists Parts lists (cont.)
• Page 54
  Parts lists Parts lists (cont.)
• Page 55
  Parts lists Parts lists (cont.)
• Page 56
  Parts lists Parts lists (cont.)

• Page 57: Commissioning/Service Reports

  Commissioning/service reports Commissioning/service reports Setting and test val- Set value Commis- Mainte- sioning nance/serv- Date: Static pressure mbar max. 57.5 mbar Supply pressure (flow pressure) = for natural gas H mbar 17-25 mbar = for LPG P mbar 25-45 mbar Tick gas type Carbon dioxide con- tent CO…

• Page 58: Specification

  Specification Specification Rated voltage 230 V Temperature control- Rated frequency 50 Hz 40 to 76 °C Rated current 2.5 A Power consumption Safety category incl. circulation IP rating IP X 4 D to pump EN 60529 ■ 10.7 — 24.8 kW max.

• Page 59
  Specification Specification (cont.) Connection values 13.2 to 31 kW Rated heating 13.2 output Rated heat in- 14.5 16.7 20.0 23.3 26.7 30.0 33.3 Connection values relative to the max. load Natural gas H 1.53 1.77 2.12 2.47 2.82 3.17 3.53 l/min 25.29 29.18…

• Page 60: Declaration Of Conformity For The Vitopend 100-W

  Certificates Declaration of Conformity for the Vitopend 100-W We, Viessmann Werke GmbH & Co KG, D-35107 Allendorf, confirm as sole respon- sible body that the product Vitopend 100-W complies with the following standards: EN 297 EN 55 014 EN 483…

• Page 61: Keyword Index

  Keyword index Keyword index Function sequence……35 Annular gap check……26 Fuse………..42 Boiler flue connection……32 Gas connection……..11 Boiler flue connection bend….32 Gas solenoid valve……13 Boiler water temperature sensor..40 Gas supply pressure……20 Burner……….26 Gas train ………..20 Gas type……….19 Circuit breaker……..13 Circulation pump……..13 Heating mode……..44 Commissioning……..18 Heating output, max……24 Connection diagrams……46…

• Page 62
  Keyword index Keyword index (cont.) Small softening system……18 Upper heating output……22 Specification ……..58 Static pressure……..20 Supply pressure………19 Wiring diagram……..46 System pressure……..18 Wobbe index……..19 Temperature limiter……40 Test pressure……..12 Tightness test……..26…
• Page 64
  7427735 7427736 7428244 7428246 7441834 7441883 7441884 7441885 7464530 7464531 Viessmann Middle East FZE Viessmann Werke GmbH&Co KG E-Wing, Office 603 D-35107 Allendorf HQ Building Telephone: +49 6452 70-0 Dubai Silicon Oasis Fax: +49 6452 70-2780 PO Box 341330 www.viessmann.com…