84
<NR98 (-SV,-OD,-DVC / NC199 (-OD,-DVC) / N-0751M (-OD,-DV,-DVC)>
Manifold Gas Pressure Adjustment
DOWN
UP
* Manifold gas pressure values are subject to change without prior notice.
Please check the latest burner specification table.
When the manifold gas pressure is adjusted, the front cover will be off.
Adjust the manifold gas pressure to the value of "Cover Off" in the table
(because it is not possible to adjust the manifold gas pressure with the
front cover on).
Use the following procedure to adjust the manifold gas pressure only
if it can be done with a high flow rate through the unit.
Manifold Gas Pressure Maximum and Minimum Values
(When Circuit Board Type is ELV)
Press and hold the "Minimum Manifold Pressure Set Button".
Use the "Manifold Gas Pressure Increase and Decrease Buttons"
to adjust to the correct pressure.
With a manometer or pressure gauge connected to the manifold
pressure tap, press and hold the "Maximum Manifold Pressure
Set Button". Use the "Manifold Gas Pressure Increase and
Decrease Buttons" to adjust to the correct pressure.
NG
LPG
Gas type
NG
LPG
NR98-SV
N-0751M
Model Name
7.9
11.0
7.9
11.0
Supply
Pressure
(inch H
2
O)
Repeat steps (1) and (2) until both are at the correct pressure. (3)
(2)
(1)
Note 2)
Note 1)
Manifold Pressure (inch H
2
O)
Cover On
2.55
2.50
4.20
4.40
0.65
0.60
1.00
1.00
7.9NG
11.0LPG
3.00
4.70
0.70
1.08
NR98-OD
NC199-OD
N-0751M-OD
N-0751M-DV
Min. ValueMin. ValveMax. Value
Manifold Pressure (inch H
2
O)
Cover Off
Max. Value
4.69
3.23
4.17
4.17
2.68
2.76
0.75
0.75
1.10
1.06
0.91
1.14
Manifold Pressure (inch H
2
O)
Cover Off
2.95
3.54
4.69
4.17
Max. Value
2.99
4.17
* Manifold gas pressure values are subject to change without prior notice.
Please check the latest burner specification table.
N-0751M-DV
LPG
NG
11.0
7.9
4.70
3.30
1.08
0.65
Manifold Gas Pressure Maximum and Minimum Values
(When Circuit Board Type is ELV-A or ELW)
Supply
Pressure
(inch H
2
O)
Model Name
NR98-OD
NC199-OD
N-0751M-OD
NR98-SV
N-0751M
NG 7.9
NG
LPG
LPG
7.9
11.0
11.0
Gas type
Manifold Pressure (inch H
2
O)
Cover On
2.80
4.40
4.20
2.70
Max. Value
0.65
0.60
1.00
1.00
Min. Value
1.10
0.94
Min. Value
0.79
0.75
1.06
1.14
Manifold Gas Pressure
Pressure Set Button
Maximum Manifold
Pressure Set Button
Minimum Manifold
Decrease Button
Manifold Gas Pressure
Increase Button
Circuit Board Type
ELV, ELV-A or ELW
ELV
* Manifold gas pressure values are subject to change without prior notice.
Please check the latest burner specification table.
Manifold Gas Pressure Maximum and Minimum Values
(When Circuit Board Type is ELV-B)
NG
LPG
Gas type
NG
LPG
NR98-SV
N-0751M
Model Name
7.9
11.0
7.9
11.0
Supply
Pressure
(inch H
2
O)
Manifold Pressure (inch H
2
O)
Cover On
2.80
2.70
4.20
4.40
0.65
0.60
1.00
1.00
7.9NG
11.0LPG
3.30
4.70
0.65
1.08
NR98-OD
NC199-OD
N-0751M-OD
N-0751M-DV
Min. ValueMax. Value
Manifold Pressure (inch H
2
O)
Cover Off
4.69
3.54
4.25
4.25
2.95
2.99
0.75
0.94
1.06
1.06
0.79
1.12
Min. ValveMax. Value
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