Altitude Adjustments - Bosch GWH 345 ESR-N Manual

Temperature modulated with electronic ignition suitable for heating recirculating potable water
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If the appliance is not powered off and
i
then back on again, it returns to normal
working conditions after 5 minutes.
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
the limits in table 17.
Appliance
GWH-345-ESR-N
GWH-345-ESR-L
GWH-450-ESR-N
GWH-450-ESR-L
Table 17 CO
levels at max. input
2
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
in Diagnostic Mode.
2
6 720 607 909
is within
2
CO
(%)
2
6.8 - 7.2
7.5 - 8.0
6.5 - 7.0
7.0 - 7.5
Altitude adjustments
33

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