Basic Boiler Anatomy
Below is a typical Boiler Anatomy – This explains what each part does.
1) LOCKING NUT
Material: Stainless Steel
Locking nut to secure the boiler coils inside the Boiler Housing
2) FLAT WASHER
Material: Stainless Steel
A washer used with locking nut to secure the boiler coils inside the Boiler Housing
3) BOILER SURROUND
Material: Black Steel or Stainless Steel
Inside this cover allows Air to flow through the boiler coils between Pos 4 & 3 allowing correct combustion.
Outside of SS cover remains cool even when boiler is operating continuously
Note: Fan Motor (Pos. 29) is typical mounted to Boiler Surround.
4) INTERNAL BOILER COIL
Material: Steel
This inside chamber, Houses the coil and channels the air flow through the coils for correct combustion
5) COIL COVER
Material: Steel
Houses Internal Boiler Coil (Pos. 4) & sits inside the base to contain boiler flames and retains heat, along with Insulating Disk (Pos 6) & Flame Containment Ring (Pos 7)
6) INSULATING DISK
Material: Fibre or Concrete
A flame retardant disc that sits below the coil.
7) FLAME CONTAINMENT RING
Material: Steel or Stainless Steel
Steel centraliser for internal of coil locator inside boiler
8) WATER BOILER COIL
Material: Steel or Stainless Steel
A Seemless double wound boiler coil (Available in various sizes for different flow rates)
9) INTERNAL BOILER FLUTE
Material: Steel or Stainless Steel
A very important steel part for quality combustion, Seals the boiler coils top arrangement and directs the Air flow through boilers coils
10) EXTERNAL BOILER COVER
Material: Stainless Steel
Top Boiler cover stainless steel, seals the complete boiler to atmosphere and houses the ignition assembly
11) FUEL SUPPORTING NOZZLE
Material: Stainless Steel
Diesel fuel nozzle Holder, mounts onto EXTERNAL BOILER COVER (Pos 10)
12) ATOMISATION FUEL NOZZLE WITH FILTER
Material: Bronze
Diesel Fuel nozzle & Filter (The Nozzle is sized to boiler capacity & manufacturers design)
13) NOZZLE HOLDER
Material: Bronze
Nozzle extension threaded both ends
14) INSPECTION BOILER GLASS
Material: Glass
Viewing Glass for boiler flames while operating
15) CIRCLIP RING Material: Steel
Circlip retaining the Eye Glass
16) BOILER MOUNTING PLATE
Material: Stainless Steel
Mounting Cover that houses (Pos 12,13,14,15 & 22)
17) HT LEADS
High tension leads carry High voltage 11,000 to 20,000 volts from ignition transformer to diesel burner Igniters
18) CRIMPED CONNECTORS
Material: Brass
Connector crimped on to the High tension leads core wire to pass the HV to the electrodes
19) DOUBLE ELECTRODE COVER
Material: Rubber
Weather Protection from atmosphere and safety protection from touching
20 & 22) FUEL LINE ELBOW & FUEL LINE CONNECTOR
Material: Copper
Generally copper tube and fittings carrying diesel fuel to Nozzle for atomisation
21) FUEL LINE
Material: Copper
Generally copper tube and fittings carrying diesel fuel to Nozzle for atomisation
23) ELECTRODES
carry the High Voltage to the 2 x Electrode tips located in front of the fuel nozzle to ignite the flame
24) DIESEL FUEL SOLENOID
Available in: 12VDC , 24VAC , 240VAC
This operate the flow of diesel fuel to fuel nozzle on demand.
25) FUEL SUPPLY LINE FITTING
Connects Fuel Line (Pos21) to Diesel Fuel Pump (Pos 26)
26) DIESEL FUEL PUMP
Rotary Gear positive displacement pump with internal adjustable bypass safety relief. Setting around 110 Psi to 150 Psi
27) FUEL PUMP ADAPTOR
This adaptor can be sacrificial if diesel fuel pump is run dry
28) BURNER FAN MOTOR
Available in: 12VDC, 120V, 240V, 415V
Come in many sizes general 120 watts to 200 Watts Voltage. Generally runs at 3000RPM
29) FAN BLADE
Available in: Left or Right Rotation
Boosts air into combustion chamber driven by Burner Fan Motor (Pos 28)
Generally runs at 3000RPM
30) IGNITION TRASFORMER
Available in: 12VDC, 240VAC
Transforms voltage to 11,000volts Dc and 20,000Vdc ignites diesel fuel through Electrodes (Pos 23)
