Installation instructions | 25
6 720 805 440 (2014/11)Greentherm
PP Concentric up and out venting - Only C1050
Cascade common venting system - C1050
Cascade common venting system - C950
Adjusting minimum power fan speed (P2)
To select fan speed:
▶Press ON/OFF button into ON.
▶ Press and hold simultaneously buttons or and for 3
seconds, until display reads P2.
Fig. 29
▶ Press to enter P2 adjustment. The current setting will appear on
the display (factory default).
▶ Press or to choose the fan speed suitable with your
installation, see table 29 and table 30.
▶ Press and hold ( 5 sec.) “Program” button until the display
flashes, then the selected value is memorized.
Adjusting maximum power fan speed (P1)
To select fan speed:
▶Press ON/OFF button into ON.
▶ Press and hold simultaneously buttons or and for 3
seconds, until display reads P2.
Fig. 30
▶ Press the minus button to display P1.
▶ Press “Program” button to enter P1 adjustment. The current
setting will appear on the display.
▶ Press or to choose the fan speed suitable with your
installation, see table29 and table 30.
▶ Press and hold ( 5 sec.) “Program” button until the display
flashes, then the selected value is memorized.
Altitude NG P2 LP P2 NG P1 LP P1
0 - 2000 no change no change no change 50
2000 - 4500 no change no change no change 50
4500 - 8000 no change no change no change 50
Table 34 Fan speed adjustment for concentric up and out vent
Altitude
Total
equivalent
length
NG P2 LP P2 NG P1 LP P1
0 - 2000 4 - 100ft 19 19 no change no change
2000 - 4500 4 - 100ft 20 20 52 53
4500 - 8000 4 - 100ft 20 20 53 53
Table 35 Fan speed adjustment for cascade vent
Altitude
Total
equivalent
length
NG P2 LP P2 NG P1 LP P1
0 - 2000 4 - 100ft 19 19 no change no change
2000 - 4500 4 - 100ft 20 20 47 47
4500 - 8000 4 - 100ft 20 20 48 48
Table 36 Fan speed adjustment for cascade vent
Proceed directly to chapter 7.5 to confirm CO
2
values
are within range.
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