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Use the following charts to match the correct
gas orifice spud with the burner location and
model being converted.
Natural Gas Orifice Spud Chart
Burner Models
Burner Rating
Stamp (A)
Size
6,000 BTU
110
1.10 mm
7,000 BTU
118
1.18 mm
9,100 BTU
134
1.34 mm
10,000 BTU
142
1.42 mm
12,000 BTU
155
1.55 mm
15,000 BTU
Outer
Inner
168
10
1.68 mm
0.5*0.82 mm
18,000 BTU
Outer
Inner
184
10
1.84 mm
0.5*0.82 mm
20,000 BTU
Outer
Inner
193
10
1.93 mm
0.5*0.82 mm
A. Size stamp
Model
No.
Right
front
Right
rear
Center
(outer)
Center
(inner)
Left
front
Left
rear
KFGS306
142
118
168
10
134
110
KFGS366
142
118
184
10
142
110
KFGU706
155
118
168
10
134
110
KFGU766
142
118
193
10
155
110
A
High Altitude Conversions
IMPORTANT:
You must convert LP gas with
LP gas high altitude or Natural gas with Natu-
ral gas high altitude. If you need to convert
LP gas to Natural gas high altitude or Natural
gas to LP gas high altitude you must convert
the pressure regulator, for this you must follow
steps 1, 2, and 3 of the respective conversion
that you need.
Natural Gas Orifice Spud Chart for High Altitude Conversion
Burner Models
Burner Rating
Stamp (A)
Size
6,000 BTU
105
1.05 mm
7,000 BTU
118
1.18 mm
9,100 BTU
128
1.28 mm
10,000 BTU
142
1.42 mm
12,000 BTU
148
1.48 mm
15,000 BTU
Outer
Inner
153
10
1.53 mm
0.5*0.82 mm*
18,000 BTU
Outer
Inner
173
10
1.73 mm
0.5*0.82 mm*
20,000 BTU
Outer
Inner
183
10
1.83 mm
0.5*0.82 mm*
A. Size stamp
Model
No.
Right
front
Right
rear
Center
(outer)
Center
(inner)
Left
front
Left
rear
KFGS306
142
118
153
10
128
105
KFGS366
142
118
173
10
142
105
KFGU706
148
118
153
10
128
105
KFGU766
142
118
183
10
148
105
A
5. Remove all burner caps and burner bases.
If necessary, remove the burner ring.
A. Burner cap
B. Igniter electrode
C. Burner base
D. Gas tube opening
E. Burner ring
B
D
C
E
A
A
B
C
D
Summary of Contents for Architect Series II KFGS306VSS
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