6 720 607 909
Altitude adjustments
33
6 Altitude adjustments
Above 4,000 feet, adjustment of air restrictor might be
required.
B Install air restrictors according to tables 6, 7 and 8.
To reduce the natural derate, increase the gas manifold
pressure and then check to ensure the CO
2
is within
the limits in table 17.
i
If the appliance is not powered off and
then back on again, it returns to normal
working conditions after 5 minutes.
Appliance CO
2
(%)
GWH-345-ESR-N 6.8 - 7.2
GWH-345-ESR-L 7.5 - 8.0
GWH-450-ESR-N 6.5 - 7.0
GWH-450-ESR-L 7.0 - 7.5
Table 17 CO
2
levels at max. input
Warning: do not exceed 9.5” W.C. for
LP or 4.0” W.C. for NG at maximum
input. Always test gas pressure and
CO
2
in Diagnostic Mode.
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