The installation instructions should tell you what's required for a safe installation. The things you need to look for in the instructions are any needed clearances around specific parts of the stove, and special materials recommended to provide heat barriers, if there are any. There may sometimes be an instruction about "venting" the surrounding spaces. (A few stoves, self-cleaning or otherwise, may recommend a hole in the counter top or other means of allowing hot air to circulate out of an enclosed space if the space is small.)
biLL -
The heating elements commonly used in stoves have a Nichrome or similar wire that gets hot. The maximum temperature at which the wire can be operated without melting or rapid burnout is generally given as 1700 F, or ~925 C.
The top cooking surface "burners" are generally controlled in an "open loop" fashion in which a small heater in the control knob is heated by the current delivered to the cooking area, and when the knob gets hot the current is cut off. In most stoves, nobody knows "how hot" a given "burner" is, as there's no sensor to tell you and the temperature depends on what you're cooking on it, so they warn that the "cooking surface may reach 1700 F (~900 C). This only happens if there's no pot on the burner, and in actual practice even then the exposed surfaces are unlikely to get to that temperature.
Most ovens have a temperature sensor in the oven that controls when the power turns on or off, so that you can actually set a temperature and that's what you'll get. (Althought few ovens actually settle within about 15C of what the knob says.) I haven't heard of a self-cleaning oven that uses an actual oven temperature higher than about 650 F (about 350 C). The heaters in the oven may cycle fairly rapidly at that tempeature, and in each cycle the elements may get close to your 900 C, but I doubt if the actual oven temperature gets anywhere close to that. The "cleaning temperature" generally is close to the hottest baking temperature you can set, but isn't likely to be all that much higher.
Putting an oven thermometer in the oven during a cleaning cycle isn't recommended, since the radiant heat would likely bring the thermometer to quite a bit higher temperature than the actual oven air temp. Destruction of the thermometer is likely, and a reading wouldn't be accurate anyway. 600 F (315 C) is red hot, but only if you turn the room lights down so you can see it. (It's a very dim red.)