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Installation
29
70457901ENR7
CE Orifices
.
Properties of CE Gases
Gas
Type
Gas
Family
Group
Gas
Designation
Supply Pressure
in. wc
(mbar, kPa)
Manifold
Pressure
in. wc
(mbar, kPa)
Capacity/
Model
Orifice Diameter
inch (mm)
Orifice Part
Number
Quantity
Natural
Gas
Second
I
2H(E)
G20
8/10
(20/25, 2/2.5)
3.57
(8.9, 0.89)
50
.1200
3.0
M401017
2
75
.1160
2.9
M401022
3
I
2L
G25
10
(25, 2.5)
5.06
(12.6, 1.26)
50
.1440
3.7
M400998
2
75
.1405
3.6
M401014
3
I
2E+
G20
8
(20, 2.0)
Unregulated
50
.1440
3.7
M400998
2
75
.1405
3.6
M401014
3
LP
Third
I
3B/P
G30
11,25/12
(28/30, 2.8/3.0)
Unregulated
50
.0820
2.1
M401027
2
75
.0785
2.0
M400999
3
G30
14,9/20
(37/50, 3.7/5.0)
12.05
(30, 3.0)
50
.0820
2.1
M401027
2
75
.0785
2.0
M400999
3
I
3+ / 3P
G30 / G31
11.25/14.9
(28/37, 2.8/3.7)
Unregulated
50
.0820
2.1
M401027
2
75
.0785
2.0
M400999
3
Table 1
Wi
Hi
Ws
Hs
d
Gas
Type
Gas
Family
Group
Gas
Description
Gas
Designation
Wobbe Index
(net)
Heating Value
(net)
Wobbe Index
(gross)
Heating Value
(gross)
Density
Btu/
ft
3
MJ/
m
3
Btu/
ft
3
MJ/
m
3
Btu/
ft
3
MJ/
m
3
Btu/
ft
3
MJ/
m
3
Natural
Gas
Second
I
2H,E
Not Applicable
G20
1226
45.67
913
34.02
1362
50.72
1014
37.78
0.555
I
2E+
2H
I
2L
Not Applicable
G25
1004
37.38
785
29.25
1115
41.52
872
32.49
0.612
I
2E+
2L
LP
Third
I
3B/P
Not Applicable
G30
2164
80.58
3117
116.09
2345
87.33
3378
125.81
2.075
I
3+
Pure Butane
I
3+
Pure Propane
G31
1898
70.69
2363
88
2063
76.83
2568
95.65
1.55
I
3P
LPG with
Propane
Table 2