Horizontal 3” Boiler Instructions v1.2
Copyright - Chiltern Model Steam Engines
Page 2.
Boiler General
THE BOILER MUST BE OPERATED IN A WELL VENTILLATED AREA TO PREVENT THE BUILD UP OF
CARBON MONOXIDE. NEVER LEAVE THE BOILER UNATTENDED WHEN THE BURNER IS LIT - ALWAYS
TURN OFF THE GAS. NOT SUITABLE FOR CHILDREN UNDER 16 YEARS OLD.
The 3 inch Horizontal Model Steam Engine Boiler Kit is suitable for driving our single cylinder engines
under light load or other similar size model steam engines.
See the demonstration YouTube videos of the boiler driving our Beam engine
https://www.youtube.com/watch?v=-ZET-58BWwA
https://www.youtube.com/watch?v=XBPHYm4m3XQ
The boiler has a simple cylinder design made of 3.5mm thick aluminium alloy, heated from
underneath by a ceramic gas burner. There are no cross tubes, flue or chimney unlike our other
boilers which have higher output.
These boilers are provided as a kit of fully machined, unpainted parts that can be easily assembled
with simple tools. It is designed to operate at a pressure not exceeding 20 psi.
Boiler Assembly
Using 4 M3 screws loosely attach each base side to the end supports and place the main cylinder
between the end supports and attach it using 4 M3 screws, as shown in the following diagram;