SEAT Workshop Service and Repair Manuals > Leon Mk2 > Heating, ventilation, air conditioning system | Supplementary heating | Aux. heater/heater booster | Auxiliary heater -D3W- (supplementary heater), vehicles: ? 05.00 | Coolant hose routing on vehicles with 2nd?heat exchanger

Coolant hose routing on vehicles with 2nd heat exchanger

Note

The arrows in the illustration show the coolant flow direction.

1 -	Coolant hose, return

q	From standard equipment heater heat exchanger

2 -	Coolant hose, supply

q	To standard equipment heater heat exchanger

3 -	Coolant hose, supply

q	From coolant distributor to heater unit

4 -	Coolant pipe, supply

5 -	Coolant pipe, return

6 -	Heater unit

7 -	Coolant hose, return

q	From heater unit to coolant pipe

8 -	Coolant hose, supply

q	From coolant pipe to heater unit

9 -	To 2nd heat exchanger

10 -	From 2nd heat exchanger

11 -	Coolant hose

To engine

12 -	Coolant hose, return

q	From coolant pipe to coolant distributor

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