Laars MagnaTherm MGH1600 Installation And Operation Instructions For page 83

MagnaTherm Boilers and Water Heaters
Model Gas Type
Natural
1,600
Propane
Natural
2,000
Propane
Natural
2,500
Propane
Natural
3,000
Propane
Natural
3,500
Propane
Natural
4,000
Propane
* - Only check the pressures if there are problems getting the CO
Table 24. CO RangeandPressureDifferential
2
Gas Valve
High fire adjustment
Low fire adjustment
Figure 46. High and Low Fire Adjustments on the Gas Valve
High Fire CO Low Fire CO
2
9.0% ± 0.2 .25 lower than high fire CO
10.0% ± 0.2 .25 lower than high fire CO
9.0% ± 0.2 .25 lower than high fire CO
10.0% ± 0.2 .25 lower than high fire CO
9.0% ± 0.2 .25 lower than high fire CO
10.0% ± 0.2 .25 lower than high fire CO
9.0% ± 0.2 .25 lower than high fire CO
10.0% ± 0.2 .25 lower than high fire CO
9.0% ± 0.2 .25 lower than high fire CO
10.0% ± 0.2 .25 lower than high fire CO
9.0% ± 0.2 .25 lower than high fire CO
10.0% ± 0.2 .25 lower than high fire CO
Pressure Differential
2
0.5" to 1.2" wc*
2
0.5" to 1.2" wc*
2
0.5" to 1.2" wc*
2
0.5" to 1.2" wc*
2
0.9" to .09" wc
2
0.9" to .09" wc
2
0.5" to 1.2" wc
2
0.5" to 1.2" wc
2
0.5" to 1.2" wc*
2
0.5" to 1.2" wc*
2
0.5" to 1.2" wc*
2
0.5" to 1.2" wc*
2
and CO values in range.
2
Page 79
Shown is a model 3000.
All units have a similar
design with the gas valve
similarly located.