Bosch AquaStar 125B LPL Installation And Operating Instructions Manual page 14

HOT WATER TEMPERATURE FLUCTUATES
1. Cold water is mixing with the hot water between
the AquaStar and the outlet (if not being used with
a circulator pump)
See #5 under "Burners do Not Ignite When Hot Water Turned
On".
2. Storage in tank (recirculating system) has not fully
recovered
Storage capacity in tank is inadequate. Increasing tank
size, setting slide control higher for a fast recovery or adding
a second 125BL for even a faster recovery is suggested.
3. Insufficient gas pressure
Note required gas pressures (page 2) and consult gas ser-
vice person.
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