The heating water tank can be connected with a hose. When the warm air is not turned on, the warm air water tank, like the pipeline, cools the engine through the fan of the water tank. It has nothing to do with the warm air tank, but there is no warm air connected to the pipeline. The original design of the warm air tank can draw out the side of the warm air tank, remove the instrument panel, and draw out the pipe in two sections. This is the design of F3. The heating water tank pipe of 620 is relatively long, which can be pulled out or cut off. During installation, it is also used in two stages and needs to be connected with hoses.
Warm air tank
It is said that the silicone tube is soft, and its head is connected to the water tank, so it is not necessary to directly connect it to the engine with hot water. I didn't take pictures because it was too cold. This process is very simple. I removed the original water tank and connected a new pipe. I first put the pipe into the engine room through the hole under the dashboard, then connect it to the water tank, and then iron the pipe at the other end of the engine room to connect it to the engine.