Manualshelf

Installation Manual

ManualsBrandsBosch ManualsPlumbingTherm 18" Natural Gas Tankless Water Heater With 199,000 BTU Max Input, Energy Star Rated, Electronic Ignition, 150 PSI Max Water Pressure, Non-Condensing, In Grey
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Installation instructions
21
Adjusting minimum power fan speed (P2)
To select fan speed:
B Press ON/OFF button into OFF.
B Press and hold "Program" button and press
ON/OFF button to turn appliance ON.
Fig. 27
B As soon as '188' is displayed, release "Program"
button , and the display should read P2.
B Press or to choose the fan speed suitable
with your installation, see Table 19 or 20.
B Press and hold (± 5 sec.) “Program” button until
the display flashes, then the selected value is memo-
rized.
Adjusting maximum power fan speed (P1)
To select fan speed:
B Press ON/OFF button into OFF.
B Press and hold "Program" button and press
ON/OFF button to turn appliance ON.
Fig. 28
B As soon as '188' is displayed, release "Program" but-
ton , and the display reads P2.
B Press the minus button to display P1.
B Press “Program” button to enter P1 adjustment.
The current setting will appear on the display.
B Press or to choose the fan speed suitable
with your installation, see Table 19 or 20.
B Press and hold (± 5 sec.) “Program” button until
the display flashes, then the selected value is memo-
rized.
i
Do not set P2 to greater then 9.
i
Proceed directly to Section 6.4 to confirm
CO
2
values are within range.