Bosch GWH 2700 ES LP - Manual (Page 18)

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18
Installation instructions
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. 22
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 12.
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. 23
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 12.
B
Press and hold (± 5 sec.) “Program” button until
the display flashes, then the selected value is memo-
rized.
Natural Gas Liquid propane
Altitude
(above sea
level)
Total
equivalent
vent length
1)
Minimum
power fan
speed (P2)
Maximum
power fan speed
(P1)
Maximum
power fan speed
(P1)
0 - 2000 ft
(0 - 610 m)
5.5 - 32 ft 7
No
modification required
No
modification required
For operation at elevations
above 2,000 ft (610 m) the
equipment ratings shall be
reduced at the rate of 4% for
each 1,000 ft (305 m) above sea
level
33 - 57 ft
8
2000 - 4500 ft
(610 - 1372 m)
5.5 - 32 ft 8* 48* 47*
33 - 57 ft 8* 49* 48*
4500 - 8000 ft
(1372 - 2439 m)
5.5 - 32 ft 9* 49* 48*
33 - 57 ft 9* 50* 49*
* Above 2000 ft, CO
2
levels must be checked with a combustion gas analyzer, see section 6.4 for instructions.
Table 12 Fan speed adjustment
1) Full equivalent length (inlet + outlet piping + fittings)
i
Do not set P2 to greater then 9.
i
Proceed directly to Section 6.4 to confirm
CO
2
values are within range.