Horizontal 3” Boiler Instructions v1.2
Copyright - Chiltern Model Steam Engines
Page 3.
Gradually tighten each screw ensuring the supports are not twisted and sits flat on a mounting board
(customer supplied).
Place the insulation sheet, which protects the mounting board from the heat of the burner, loosely
within the supports and screw the boiler securely to the mounting board using the lugs on the
support sides.
The boiler cylinder is normally supplied with the Outlet and Safety Valves already fitted. These can
be removed by unscrewing the long cylinder M5 socket head screws. This will allow splitting the
cylinder body into two halves and the centre joining section. Remove the valve nuts which are on
the inside of the cylinder and then unscrew the respective valves from the cylinder body from the
outside.
Assembly is a reverse of the above but ensure that the two O ring seals lubricated and are in their
proper place.
Painting
It is recommended that the base sides and ends are coated with heat proof/high temperature
aerosol paint such as that used on barbeques or car brake callipers. The boiler cylinder can be left or
sprayed black to match.
Boiler Mounting
The boiler should be secured to a base mounting board using the 4 lungs on the sides. Allow plenty
of space around the boiler’s base to ensure a free flow of air to the burner.
Gas Burner
The BIX ceramic gas burner when lit gets very hot so always use protective gloves when handling
and allow to cool before making any adjustments.
Take care not to damage the ceramic burner
element or gas jet.
The boiler kit is supplied with a brass gas jet carrier which sits in the brass burner mixer tube and is
secured with a locking screw, as shown in the photo.
Burner Mixer
Tube
Gas Jet
Gas Jet Carrier
Gas Jet Carrier
Connection Nut
Locking
Screw
