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Summary of Contents for Webasto BBW 46
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Page 1: Water Heaters
Water Heaters Installation Instructions BBW 46 DBW 46 Be sure to read these Operating Instructions prior to putting the heater into operation. 9/1998... -
Page 2: Table Of Contents
BBW 46 / DBW 46 Table of Contents Page Installation Instructions Legal Provisions Installation Location Installation Example BBW 46 / DBW 46 Connection to the Cooling System 5 Re-Positioning of Circulating Pump 5 Fuel Circuit Connection Combustion Air Supply Exhaust Gas Pipe... -
Page 3: Installation Instructions
Traffic for the BBW 46 and DBW 46 water heaters with the driver’s cab or vehicle. nuine replacement parts have been used. -
Page 4: Installation Location
Water outlet Water inlet Exhaust gas outlet Heater mount Combustion air inlet Fig 2: Installation Drawing BBW 46 / DBW 46 Fig 1: Installation Positions Mount Type Plate The heater mount must be fitted to the vehicle body or the... - Page 5 Fuel line Heater fuel line Exhaust gas line Water circuit Fig 3: Installation example of BBW 46 / DBW 46 heating device in a passenger car (inline integration) Radiator Control unit Digital timer Cooling water thermostat Relay (for vehicle fan)
- Page 6 Fuel line Heater fuel line Exhaust gas line Water circuit Fig 4: Installation example of BBW 46 / DBW 46 heating device in a passenger car (thermostat integration) Radiator Fuse holder Fuse bank in vehicle Cooling water thermostat Control unit...
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Page 7: Connection To The Cooling System
Fuel system integration without non-return valve tem in accordance with Figs 3, 4, 5 and 6. A minimum of 4 As a rule, the water hoses supplied by Webasto with the in the tank litres of coolant must be maintained in the cooling circuit. - Page 8 BBW 46 / DBW 46 Fuel Supply Details on the permissible pressure at the fuel extraction point are contained in the table below. Permissible at max. permissible fuel feed height H (m) overpressure (bar) in fuel line 0.00 1.25 2.50 3.75...
- Page 9 BBW 46 / DBW 46 If the heater is installed in vehicles with petrol injection sys- Connecting Two Pipes Using a Hose tems it must therefore be determined whether whether the fuel pump is mounted inside or outside the tank.
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Page 10: Combustion Air Supply
NOTE: Any condensation water that may have collected in the ex- Operation of the BBW 46 / DBW 46 heater is also per- haust pipe must be drained immediately. If necessary, it is missible without silencer. permitted to drill a condensation water drain hole. -
Page 11: Installation Of Telestart Receiver
NOTE: NOTE: - Briefly press the ”Start” button. The BBW 46 / DBW 46 water heaters can be retrofitted Each receiver can be allocated 2 handheld transmitters. with the T60 Telestart remote control. Start - Place batteries in battery compartment. - Page 12 BBW 46 / DBW 46 Installation of Antenna - Route antenna cable to receiver. - Establish plug connection at receiver and tighten con- NOTE: nector hand-tight. Preferably, the antenna should be installed in the interior - Secure antenna cable using cable ties.
- Page 13 X1 F3 8 10 12 9 11 (75) 15 sw/rt F2 F1 X1 Y1 bl/ge gn/ws X2 Y2 ws/sw ϑ ϑ Fig 16: Automatic control circuit BBW 46 / DBW 46, 12V digital timer and Telestart T6 (legend see page 12)
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Page 14: Circuit Diagrams
BBW 46 / DBW 46 Wire Colours Pos. Designation Remarks Wire Cross-Sections Heater BBW 46 / DBW 46 blue < 7.5 m 7.5 - 15 m brown Electronic control unit SG 1560 0.5 mm 0.75 mm yellow Telestart receiver green Flame detector 0.75 mm... -
Page 15: Initial Start-Up
BBW 46 / DBW 46 Initial Operation Malfunctions Fault Lock-Out Due to Undervoltage In the case of an undervoltage of 9.5 ± 0. V (in the case of NOTE: Fault Lock-Out Due to Malfunctions of the Heater 12-volt heaters) or 19 ± 1 V (in the case of 24-volt... -
Page 16: Technical Data
BBW 46 / DBW 46 Technical Data Unless tolerances are shown within the technical data Heater Operating BBW 46 DBW 46 table, a tolerance of ± 10% applies at an ambient tempera- Mode ture of +20°C and at the rated voltage. -
Page 17: Version
BBW 46 / DBW 46 Version Type DBW 46 Supplementary Heater Water heater for ”diesel” fuel Type BBW 46 Supplementary Heater Water heater for ”petrol” fuel The BBW 46 / DBW 46 water heaters are designed for 12-volt or 24-volt operation.
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