15
Pull the gas train out of the burner. The orifice is located on the end of the gas train and looks like a brass plug. Remove
the orifice with a 11/16 inch wrench (Figure 8).
FIGURE 8: ORIFICE LOCATION
To drill the orifice, place it face down in a vice and drill through the back side. The back side is tapered and will make
lining up the drill bit easier. Deburr the orifice and mark new size on orifice with permanent marker. Reinstall the orifice
and secure the gas pipe train to the back of the burner using the nuts.
Record drilled orifice size in installation log in
manual.
NOTE: Numbered and lettered drill sizes are valid bit sizes. They are machinist’s drill bits.
The burner is now ready to be connected to the gas supply piping; see instructions in next section.
Summary of Contents for P250 series
Page 35: ...35 FIGURE 23 WIRING DIAGRAMS FOR GAS BURNER WITH DIRECT IGNITION FENWAL...
Page 36: ...36 FIGURE 24 WIRING DIAGRAMS FOR GAS BURNER WITH ELECTRONIC PILOT HONEYWELL...
Page 37: ...37 FIGURE 25 WIRING DIAGRAMS FOR GAS BURNER WITH ELECTRONIC PILOT NO T STAT...
Page 38: ...38 FIGURE 26 WIRING DIAGRAMS FOR GAS BURNER WITH ELECTRONIC PILOT FENWAL...
Page 46: ...46 NOTES...
