A change in any one of the three types of motion affects the other two. Imagine three lines running through an airplane and intersecting at right angles at the airplaneâs center of gravity. 1  Rotation around the front-to-back axis is called roll.  Rotation around the side-to-side axis is called pitch.
A system boiler heats your central heating system directly and produces hot water for your cylinder. A system boiler, just like a regular (conventional) boiler works on the principle of stored hot water.However, a system boiler differs from a regular boiler in some important respects.n example of a central heating and hot water system layout using a system boiler with an open-vented hot water cylinder. View our system boilers. An example of a central heating and hot water system layout using a system boiler with a pressurised unvented hot water cylinder. View our system boilers.
Boiler thermostat. Your boiler thermostat sets the temperature of the water that will be pumped from the boiler through the radiators to heat your home. The higher this is set, the quicker the system will heat your home.hatever the age of your boiler, fitting a boiler thermostat, a timer or programmer, a room thermostat and thermostatic radiator valves (TRVs) can help you save money on your fuel bills. Correct boiler controls can also help to ensure that your system meets the requirements of Part L of the Building Regulations.