Operating instructions

4.6.2 Plumbing the TTC into The Coolant System
Fig. 403: Engine Block Preheating
Engine Block Preheating:
1. Remove radiator pressure cap and release system pressure.
2. Drain coolant from engine.
3. Plumb the Webasto system as shown above.
4. Refill engine coolant as per engine manufacturer's recommendations and reinstall the radiator
pressure cap.
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Thermo Top C (TTC) 4 Installation