Manual 2100-587J - Bard WG Series Installation Instructions Manual

Factory Standard Gas Heat* Value
Input BTU/Cu. Ft.
25000 BTU
Per Burner
1000-1049**
1050-1100
Pressure Switch
(2.40) is the standard factory-installed orifice size
Optional
Gas Heat* Value
10% Field
BTU/Cu. Ft.
Converted Derate
22500 BTU
Per Burner
1000-1049**
1050-1100
Pressure Switch
[2.30] orifices are shipped with the unit for field-installed optional
10% input rate
* At standard conditions: 30.00 inches Mercury, 60F, saturated, .60 specific gravity.
** All Natural Gas factory orifice sizing and standard input ratings based on nominal 1025 BTU/cu ft gas and sea level conditions
All other orifice sizes shown are available as individual items. See orifice tables below for part numbers and number required.
Bard Part No.
9010-092
9010-088
9010-087
9010-086
9010-082
9010-085
9010-079
9010-084
9010-093
9010-094
9010-095
9010-096
9010-097
9010-098

Manual 2100-587J

Page 30 of 59
Natural Gas Orifice Tables
Up to 6,000' No
Changes Except
for BTU Content
700-749 2.90
750-799 2.80
800-849 2.70
850-899 2.60
900-949 2.50
950-999 2.45
(2.40)
[2.30]
Standard (.55)
Up to 6,000' No
Changes Except
for BTU Content
700-749 2.75
750-799 2.70
800-849 2.60
850-899 2.50
(2.40)
900-949
950-999 2.35
[2.30]
2.25
Standard (.55)
Orifice Size (mm)
2.10
2.15
2.20
2.25
2.30
2.35
2.40
2.45
2.50
2.60
2.70
2.75
2.80
2.90
TABLE 8
6,001' to 8,000'
Requires Pressure Switch
Change and Orifice
Change Based on BTU
Order 8620-189 High Altitude Pressure Switch Kit (.42)
[2.30] orifices are shipped with the unit for field-installed
optional 10% derate
6,001' to 8,000'
Requires Pressure Switch
Change and Orifice
Change Based on BTU
Order 8620-189 High Altitude Pressure Switch Kit (.42)
(2.40) is the factory-installed orifice size for full rated
input
Orifice Diameter
0.0826
0.0846
0.0866
0.0885
0.0905
0.0925
0.0945
0.0964
0.0984
0.1024
0.1063
0.1082
0.1102
0.1142
8,001' to 10,000'
Requires Pressure Switch
Change and Orifice Change
Based on BTU Content
Content
2.80
2.70
2.60
2.50
2.45
(2.40)
2.35
2.25
8,001' to 10,000'
Requires Pressure Switch
Change and Orifice Change
Based on BTU Content
Content
2.70
2.60
2.50
2.45
2.35
[2.30]
2.25
2.25
No. of Orifices Required
Based on Unit Input Rating
45,000 (2)
50,000 (2)
68,000 (3)
75,000 (3)
90,000 (4)
100,000 (4)
113,000 (5)
125,000 (5)
2.70
2.60
2.50
2.45
(2.40)
2.35
[2.30]
2.20
2.60
2.50
(2.40)
[2.30]
2.25
2.20
2.20