MODEL 200-AO
REMOVING THE BURNER ASSEMBLY
While there is rarely any cause to remove the entire Burner Assembly since such items as Burner Nozzle,
Electrodes, Transformer, Flame Detector Control and Cad Cell can be replaced without removal of the complete
unit.
However, should the Burner Assembly be removed for replacement or `Bench' overhaul the following procedure
should be followed:
WARNING
Before attempting this procedure make certain all service (Electric & Water) has been
secured and both Fuel and Plumbing Systems have been relieved of all pressure. FAILURE
TO D0 SO COULD RESULT IN SEVERE OR FATAL INJURY TO PERSONNEL.
1.
Removing the Burner Assembly:
a)
After making sure unit is no longer connected to any electrical source, lift Flame Detector
Control, item 1, from Its Mounting Box, item 2, by loosening the slotted screws anchoring
control upon the Mounting Box. Disconnect wire leads at Burner Junction Box, item 2, open
Squeeze Clamp to permit removal of Burner Switch Wiring, re-attach Flame Detector Control to
Mounting Box.
Turn
`Off' Fuel Filter Valve, item 6 , and disconnect "Fuel Filter to Fuel Pump" Hose, item
b)
and "Fuel Return, Pump to Tank" Hose, item 4. Disconnect 1/4" Copper Tube lead, item
5,
8,
at Hydro/Fuel Safety Modulator, item 9, and 1/4" Copper Tube Lead, item 7, from
Fuel
Pump to Fuel Pressure Gauge.
The Burner Assembly is fastened to the Heater End Bell by three bolts welded directly to the
c)
Heater End Bell. After Removing the three stud nuts and washers, the Burner Assembly can be
withdrawn, being careful not to tip the air tube during withdrawal to avoid damaging the
Burner Drumhead MOUlded Insulation.
NOTE #1 :
It may be advisable to have help when removing the Burner Assembly which
weighs approximately fifty pounds,
2.
To reinstall a new or repaired Burner Assembly, reverse the directions as given in paragraph one
(1) above.
NOTE #2:
As explained in the first paragraph above, most components of the Burner
Assembly are not repairable, only replaceable, Including the Fuel Pump,
item 10, Part No. 1175-21-05. However, the replacement Fuel Oil Pump is
factory supplied as a single tube bypassing system along with a small plug
to install to convert the Fuel Oil Pump into a dual tube (supply & return)
fuel pump to make the fuel system self-priming.
Before installing a factory supplied Fuel Oil Pump replacement, first
install the supplied plug fully into the threaded port as shown below.
(This is the lower right-hand port opening (return line port) when
facing the fuel pump side of the Burner Assembly)
