Webasto Dual Top ST 6 Installation Instructions Manual
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Webasto Dual Top ST 6 Installation Instructions Manual

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Installation Instructions
Dual Top ST 6
English

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Summary of Contents for Webasto Dual Top ST 6

  • Page 1 Installation Instructions Dual Top ST 6 English...

  • Page 2: Table Of Contents

    Fuel pump ...............  14 12.3 Fuel extraction............ 15 12.4 Fuel lines .............. 16 12.5 Fuel filter .............. 16 13 Combustion air supply ......  16 13.1 General.............. 16 13.2 Combustion air intake line ........ 17 9026389C II Dual Top ST 6...

  • Page 3: Installation / Repair

    Only use genuine Webasto parts. Refer to the Webasto Spare The Dual Top ST 6 complies with all applicable standards for this type of product. When installing the Dual Top ST 6 heaters Parts List, the Air and water heaters accessory catalogue, and and related components, you must follow all local regulations, the motorhome catalogue for more information.

  • Page 4: Excerpt From The Regulations Ece-R 122 Points 5 (Part I)

    Requirement from ECE-R 122, point 5.3.3.2. See eur- lex.europa.eu document 42010X0630(08) for more informa- tion. A notice, indicating that the heater must be shut down before refuelling, must be affixed to the filler neck of the vehicle. [...] 4 / 32 9026389C II Dual Top ST 6...

  • Page 5: Additional Safety Instructions

    If the Dual Top ST heater suffers any impact damage, for example by falling onto the floor, you must return it to Webasto for safety inspection/repair. n You must not paint or repaint the Dual Top heater in part or completely. 9026389C II Dual Top ST 6 5 / 32...

  • Page 6: Installation Example

    Dual Top ST Rubber bellows Combustion air intake silencer Cooling air and drainage water drain Exhaust silencer Drinking water tank Water pump Fuel pump Fuel tank connector Fuel tank Hot air ducts Control panel Fig. 1 6 / 32 9026389C II Dual Top ST 6...

  • Page 7: Heater Installation

    The heater must be removable. n The heater must be accessible and the housing cover with the inlet interfaces removable. Webasto recommends installing the heater on the exterior of the vehicle to save space. See also chapter 6.6, "Additional in- Fig. 2 formation for exterior installation"...

  • Page 8: Connecting The Wiring Harness

    (see Fig. 10) is included in the scope of delivery. Opening for electric heater wiring harness n To minimize energy loss, Webasto recommend that the hot (Dual Top ST 8 only) air hoses which run outside the vehicle be insulated.
  • Page 9 NOTE CAUTION To guarantee proper, secure positioning of the heater Use the foam seal approved by Webasto to seal off the and the foam seal, Webasto recommend that you use heater, and the exhaust pipe in particular, to the out- the Dual Top Interior Installation Kit.

  • Page 10: Type Label

    The Dual Top ST 6 complies with all applicable standards for The internal diameter of the hot water lines should be this type of product. When installing the Dual Top ST 6 heaters at least 8 mm. and related components, you must follow all local regula-tions,...

  • Page 11: Installation Information For Submersible Pump Systems

    Never try to open the heater if you are not certified. In- Dual Top ST heater submersible pump version stallation and repair may only be carried out by persons trained and certified in a Webasto training course. Submersible pump Vehicle’s fresh drinking water tank Check valve The numbers in Fig.

  • Page 12: Hot Air System

    Use the control panel to adjust the interior temperature 41 to mount an air grille on the heating air intake. 95 ºF (5 to 35 ºC). Heat is generated with a diesel-operated Webasto recommend to position the inlet sufficiently above burner. The floor level.

  • Page 13: Hot Air Distribution

    Seal the gap between floor and hot air hose if the hot air hose is going from the exterior to the interior of the vehicle. Mount the Webasto air outlets at the end of each hot air hose. Fig. 24 Hot air distribution...

  • Page 14: Boiler Drainage And Pressure Relief System

    To completely drain the entire water system and the boiler, h1 ft (m) pmax psi (bar) Webasto advise using clean compressed air according to ISO 8573-1:2010, “Compressed air - Part 1: Contaminants and pur- -1.5 to +7.25 (-0.1 to +0.5) h1 = 0 ity classes”.

  • Page 15: Fuel Extraction

    Fig. 29 Fuel pump DP40 installation position The next picture shows the installation position for the fuel pump DP 42.4 Fig. 31 Connection to vehicle's fuel line using a Webasto fuel connector 9026389C II Dual Top ST 6 15 / 32...

  • Page 16: Fuel Lines

    They must be installed in such a way that they cannot be damaged by flying road chippings or high temperatures (ex- haust line). The fuel lines must be secured at the connections using hose clips to prevent them from detaching. 16 / 32 9026389C II Dual Top ST 6...

  • Page 17: Combustion Air Intake Line

    5/32 in (4 mm) at the lowest point of mm). The exhaust pipe has to be connected to the heater using the pipe. a Webasto exhaust clamp. You can use an exhaust assembly in- See Fig. 38. cluding a special bracket to mount the silencer on the heater.
  • Page 18 Make sure that the end of the exhaust is cut horizontally to avoid ambient wind entering. Fig. 41 Elbows: cast pipe (left) and bent pipe (right) 18 / 32 9026389C II Dual Top ST 6...

  • Page 19: Electrical Connections

    Fuse 15 A Fuse 15 A Fuel pump Interior temperature sensor Wiring interior temperature sensor Fig. 45 Schematic diagram of electrical connections Dual Top ST 6 Description Dual Top ST 8 Not Available In North America Wiring harness (external) Programmable control panel Vehicle’s service battery...

  • Page 20: Supply Voltage Connection

    Make sure that the inside temperature sensor is not positioned: n in the direct current of hot air (from the vehicle heating sys- tem or from the Dual Top ST heater). 20 / 32 9026389C II Dual Top ST 6...

  • Page 21: Connection To Programmable Control Panel

    Webasto Thermo Test PC-diagnosis Webasto Telestart. NOTE You can easily retrofit the Dual Top ST 6 heater with the programmable control panel. This provides you with additional comfort functions, such as a programmable digital timer, which are not available from the manual control panel.
  • Page 22 Heater 1 Heater 2 Fig. 54 Number Description 230 V, phase 230 V, neutral Blue Brown Yellow green Black Relay box Wiring 230 V Wiring harness (external) with connector X6 Wiring harness electric heater 22 / 32 9026389C II Dual Top ST 6...

  • Page 23: Wiring Diagrams

    Wiring diagrams | 16 Wiring diagrams Fig. 55 Circuit diagram Dual Top ST 6 Fig. 56 Circuit diagram Dual Top ST 8 9026389C II Dual Top ST 6 23 / 32...

  • Page 24: Legend For Wiring Diagrams

    Plug con- to relay box (for Dual Top ST 8 only) nector, 8-pin Plug con- to Dual Top ST 6 / 8 heater nector, 12-pin Wire end 4X to relay box, 1 to earth (for Dual Top ST 8 only)

  • Page 25: Manual Control Panel

    To unlock a Dual Top ST heater with a programmable control panel, use the steps in chapter 18.2, "Programmable control panel" on page 26 or use Webasto Thermo Test (WTT) PC-Diagnosis software. If a fault occurs, the heater will stop. However, failure of an electrical safety / drainage valve fault (indicated by 17 red flashing pulses) will not stop the heater, you can still heat the interior.

  • Page 26: Programmable Control Panel

    Wait at least 5 s. and then insert the fuse again. The heater is now reset. You can also delete failures by using the Webasto Thermo Test (WTT) PC-Diagnosis. If a fault occurs, the heater will stop. However, failure of electrical safety/drainage valve (message 28 and 29) will not stop the heater and will not be shown during heater operation.
  • Page 27 / short circuit. crushed, Check the connector behind the control panel. Reset heater by pressing OK or switching off for at least 5 sec. Replace the interior temperature sensor. Message 19 9026389C II Dual Top ST 6 27 / 32...
  • Page 28 No relevant temperature in- water tap or heavy leakage. crease detected. Check cable 230 V from relay box to heater and corresponding connectors. Contact a Webasto Service Centre. n/a = not available 28 / 32 9026389C II Dual Top ST 6...

  • Page 29: Warranty And Customer Service

    After changing to low-temperature fuel, you must operate the heater for approximately 15 minutes for the fuel system to be filled with the new fuel. 9026389C II Dual Top ST 6 29 / 32...

  • Page 30: Technical Data

    Maximum ter supply Length: 20.87 in (530 mm) Heater dimensions Width: 13.9 in (352 mm) Height:10 in (256 mm) 50.7 lbs (23 kg) 52.9 lbs (24 kg) Weight (w/o water contents) 30 / 32 9026389C II Dual Top ST 6...

  • Page 31: Declarations | 21

    – Trinkwasserverordnung – TrinkwV 2018 regulation on the quality of water for consumption. – UBA KTW Leitlinie - Guideline for the hygienic assessment of organic materials in contact with drinking water 9026389C II Dual Top ST 6 31 / 32...
  • Page 32 These are the original instructions. The English language is binding. You can request your language if it is missing. The telephone number of each country can be found in the Webasto ser- vice centre leaflet or the website of the respective Webasto representative of your country.

This manual is also suitable for:

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