Installation manual

www.webasto.us 17 Webasto Thermo & Comfort N.A., Inc.

Thermo Pro 90 Connection to the Vehicle Cooling System

Figure 14: System configured with an additional auxiliary heat exchanger connected in “series / parallel” with rear heat

exchanger circuit.

1. Coolant supply connection

2. Vehicle heat exchangers

3. Coolant pump

4. Thermo Pro 90 heater

5. Coolant return connection

6. Engine coolant pump

7. Thermostat

8. Automated control valve

9. Wye connectors

10. N/A

11. Auxiliary heat exchanger