Final Inspection And Initial Start-Up; Final Inspection; Initial Start-Up - Webasto BlueHeat Installation Instructions Manual

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2.14

Final Inspection and Initial Start-up

2.14.1

Final Inspection

Inspect installation for:
• loose fasteners.
• exhaust system routing and clamp tightness.
• combustion air intake tube routing and clamp tightness.
• loose coolant line clamps.
• pinched coolant lines.
• routing of coolant lines and coolant lines securely tied and protected against chaffing and related damage.
• loose fuel line clamps.
• routing of fuel lines and fuel lines securely tied and protected against chaffing and related damage.
• loose wiring connections and battery connections.
• routing of wiring harness and wiring harness securely tied and protected against chaffing and related damage.
• check operation of vehicle heater fan with Webasto heater OFF.
2.14.2

Initial Start-up

1. Top off cooling system with coolant per engine/vehicle manufacturers recommendations.
2. Set interior heater control to maximum heat position (hot) and switch off air conditioning system.
3. Start the vehicle engine and run on fast idle for 5 minutes to purge any remaining air from the Webasto heater and
coolant system. While the engine is running check:
• hose connections for leaks.
• coolant level in expansion tank. Add coolant as needed.
4. Switch off the engine.
More than one start-up attempt of the heater may be required to purge air from fuel system before heater will start.
Cycle heater Off and On after each failed start attempt until heater starts successfully. If heater should go into the
control unit lock-out mode, which is possible after three start attempts, refer to section 3 "Troubleshooting" and follow
directions in sub-section 3.2 "Heater Lockout Reset Procedure." No further start attempts are possible until the control
unit lockout condition is cleared.
5. Switch on the Webasto heater by means of the instant heat button on timer and check:
• timer panel and instant heat indicator illuminates.
• circulating pump in operation.
• initiation of start-up sequence.
• successful start-up and operation.
6. Allow heater to run for 20 minutes or until coolant is heated to temperature. Re-tighten all hose clamps.
Coolant temperature must be below 30 °C (86 °F) before heater will attempt to start.
Engine coolant temperature gauge may read lower than actual Webasto heater output temperature. This is due to the
location of the temperature gauge sensor on engine.
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