Figure 32
Gas/Oil Burner Firing Head Cutaway View
Showing Direct Spark Ignition On Oil, Gas Pilot Main Gas Flame Ignition - Using A Common Scanner For Both Fuels
Figure 34
C6 Gas Gun Assembly
28.344 [28
11
/
32
] Initial Setting Full Foward
5
/
32
” Diameter Orifice
Pilot Extends Thru Diffuser 0.125 [
1
/
8
]
2.250 [2
1
/
4
] I.D.
7.816 [7
13
/
16
] O.D.
As Shown Fig. 37
1.500 [1
1
/
2
]
Front
Side View
Top View
*NOTE: Blade Setting May Change For
Specific Boiler Models (Consult Factory)
1
/
2
” Blade Setting*
+1
/
16
” Blade Tips After Adj.
Must Be Within
1
/
16
” of
a Flat Plane
-
View
Figure 33
C5B Gas Gun Assembly
6.938 [ 6
Figure 35
C5B-C6 Gas/Oil Gun Assembly
Side View
*NOTE: Blade Setting May Change For Specific Boiler Models (Consult Factory)
As Shown Fig. 37
Front
View
Top View
Initial Setting 31.875 [31
7
/
8
] C6
Initial Setting 31.310 [31
5
/
16
] C5B
7.816 [7
13
/
16
]O.D. C6 /6.938 [6
15
/
16
]O.D. C5B
2.250 [2
1
/
4
] I.D.
Max. Insertion Lock Collar Must Be Set
To Prevent Diff. From Falling Out Forward
1
/
2
” Blade Setting*
1
/
16
” Blade Tips After Adj.
Must be Within
1
/
16
” of A Flat Plane
Mark Pipe With Saw For Full
Forward
Pilot Extends Thru Diffuser 0.125 [
1
/
8
]
5
/
32
” Diameter Orifice
+
-
Gas Inlet
Oil Nozzle
Choke Assembly
Boiler Flange
NOMINAL FAN DIFFUSER OPENINGS: C1-
1
/
4
”, C2 -
3
/
8
”, C3 through C8 -
5
/
8
”
JOB CONDITIONS such as high altitude may require adjustment of diffuser blades to alternate settings. Certain OEM applications may
require settings of diffuser blades or electrodes not listed or shown. Setting of electrodes closer to center of nozzle and or farther forward
may be required.
Scanner Pipe
Gas
Pilot
Initial Setting 28.344 [28
11
/
32
]
5
/
32
” Diameter Orifice
Pilot Extends Thru Diffuser 0.125 [
1
/
8
]
From Front of Nozzle Adpt. to
Back of Diff 2.000 [2]
1
/
2
” Blade Setting*
+1
/
16
” Blade Tips After Adj.
Must be Within
1
/
16
” of A Flat Plane
2.375 [2
3
/
8
] I.D.
As Shown Fig. 37
Front
Side View
Top View
*NOTE: Blade Setting May
Change For Specific Boiler
Models (Consult Factory)
15
/
16
] O.D.
View
Boiler Flange
Gas Pilot
Scanner
Pipe
Stainless
Steel
Diffuser
Choke
Assembly
Electrode Support
Blast Tube
Ignition Elec-
trode
Air
Air
Air
Gas
Bypass
Oil Line
Oil
Supply
Air
1”
C36
Rev.304
