the page from the manual that you posted appears to be from the Factory Service Manual for the 91 USDM CRX Si with D16A6 engine which uses an electronic controlled FICV which receives a signal from the ECU at low temperature causing the valve to open which allows air to bypass the throttle plate into the intake manifold which causes the idle to increase (like having a vacuum leak) - it is not a thermowax operated valve and has no coolant connections - i must admit that i am only familiar with the JDM ZC1 and am not sure if the European version is the same - does your intake manifold have the Fast Idle Valve on the back like the picture that i posted? it is controlled by the temperature of the coolant passing through it and is the thermowax type
back to your other question - yes, the Fast Idle Valve increases the idle when the coolant temperature is low and the idle drops as the coolant temp increases - it should only increase about 200rpm - the idle control solenoid valve increases the idle slightly at start-up and controls the idle speed with regard to load on the engine, such as when you turn on the lights, A/C, etc. which causes more load on the alternator and tries to drag the engine down
generally speaking, high idle is usually caused by a vacuum leak - if your engine has the Fast Idle Valve like the picture, here is how you check it:
(Note: the valve is factory adjusted and should not be disassembled)
1. start the engine when it is cold (coolant temp below 30*C, 86*F)
2. remove the cover on top of the Fast Idle Valve (2 screws)
3. place your finger on the valve seat area and make sure that there is air flow with engine idling.
4. if no air flow, the valve is bad.
5. allow engine to warm up to normal operating temp (cooling fan comes on)
6. as coolant temp increases, the plunger inside will rise.
7. check that the valve is completely closed. if it is not closed, an air suction sound can be heard in the valve seat area.
8. if any suction is heard, the valve is leaking and needs to be replaced.