Volvo C30 2007 Service And Repair Manual page 538

Fig. 155: Identifying Engine Coolant Hose, Connector, Fuel Line And Holder
Courtesy of VOLVO CARS CORPORATION
Disconnect the engine coolant hose (1). Plug the opening to prevent the remaining coolant in the heater running
out in an uncontrolled way.
Place paper under the engine coolant heater to collect any engine coolant spillage.
Remove:
the connector (2) for the engine coolant heater

the fuel line (3) from the clip below the heater.

Open the holder (4) for the radiator hoses behind the engine to expose the lower radiator hose running down to
the water pump.
Remove the exhaust pipe from the engine coolant heater. See: FUEL FIRED BOOSTER HEATER
EXHAUST PIPE.
2012 Volvo C30 T-5
HVAC Climate Units - Removal, Replacement And Installation