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This page is only for boilers using a gas burner. If an oil burner is being used,
please refer to page 18 for the proper setup of the burner.
Riello
Boiler Model
Burner Model
B-4
R200
B-5
R200
B-6
R200
B-7
R400
B-8
R400
Carlin
Boiler Model
Burner Model
B-3
EZ-GAS
B-4
EZ-GAS
B-5
EZ-GAS
B-6
EZ-GAS
Heat Wise
Boiler
Burner
Model
Model
B-3
SU-2A
B-4
SU-2A
B-5
SU-2A
B-6
SU-2A
B-7
SU-2A
B-8
SU-3
B-9
SU-3
Burners in the shaded chart
are discontinued. Specs are
shown for reference only.
Note: Consult burner manufacturers literature for gas manifold diagram and controls.
To determine how much gas is coming into the
burner, or to set the gas meter correctly, the
following formula can be used.
3
Ft
/hr = [3600/(sec. Per rev.)]*(Size of gas meter)
The chart to the right can be used to determine
the flow rate depending upon the time per
revolution and the size of the gas meter dial.
8.2 Gas Burner Setup
Input
Man. Pres.
(MBH)
(W.C.)
110
1.06"
140
1.20"
175
1.46"
207
1.22"
248
1.26"
Input
(MBH)
80
110
140
175
Input
Man. Pres.
(MBH)
(W.C.)
80
3.5"
115
3.5"
140
3.2"
175
3.5"
215
3.3"
272
1.7"
308
2.3"
Natural Gas
Head
Air
Setting
Gate
2.2
2.8
2.8
2
2.3
Natural Gas
Man. Pres.
Orifice
(W.C.)
3.50"
#11 (.191")
3.50"
#1 (.228")
3.50"
Let F (.257")
3.50"
5/16" (.312")
Natural Gas
Head
Air
Orifice
Setting
Gate
18
closed
3/16
12
3
7/32
15
8.3
9/32
10
13.5
21/64
3
15
27/64
1
3.25
No orifice
1
6.75
No orifice
Seconds per
Revolution
20
25
30
35
40
45
50
55
60
Propane
Man. Pres.
Head
(W.C.)
Setting
1
1.32"
2
2
1.76"
2.7
3
2.34"
2.9
0
1.48"
2
1
1.64"
2.3
Air
Man. Pres.
Gate
(W.C.)
30%
3.50"
40%
3.50"
20%
3.50"
36%
3.50"
Propane
Man. Pres.
Head
(W.C.)
Setting
2.0"
22
2.3"
12
1.8"
15
2.3"
10
2.0"
3
1.3"
1
1.7"
2
Size of Gas Meter Dial
(Cubic Foot)
0.5
90
180
72
144
60
120
51
103
45
90
40
80
36
72
33
65
30
60
Air
Gate
1
2
3
0
1
Propane
Air
Orifice
Gate
#25 (.150")
30%
#15 (.180")
48%
#5 (.206")
20%
1/4" (.250")
41%
Air
Orifice
Gate
closed
3/16
3
7/32
7.75
9/32
13.5
21/64
15
27/64
3.25
No orifice
6.5
No orifice
1
2
360
288
240
206
180
160
144
131
120
Page 19
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