Silly question-coolant

[Tpeti]

The car: 2004 1,4 petrol
Silly question coming:
Want to change the coolant, found the bleed screws, I cant find on the cylinder block.
Also the haynes states: shouldnt go any air to the system. On my bike I dont worry because as it gets warmer fluid and air go out to the reservoir bottle. I reckon the same happens here. Is it right?
Cheers

[Kokain]

There is only one bleed screw, don't worry about what Haynes said. It's the one next to the bulkhead, heater, wipers etc. You unscrew it then you start filling up till the bubbles disappear/consistent stream appears, could also help a bit with massaging the radiator hose.
Now there is only one way to drain the coolant completely and that is to remove the thermostat. And I'm talking 30-40% remains of the old one if you don't. Then your next worry is bleeding the system past the thermostat. I don't have this problem (because race car) but in general you should start the car and get it to 90. The amount needed written in Haynes is also a joke. It's far less for some reason.