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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. 19
B
As soon as '188' is displayed, release "Program"
button
, and the display reads P2.
B
Press
to enter P2 adjustment. The current set-
ting will appear on the
display (factory default: 12).
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
memorized.
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. 20
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)
Vent
terminal
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)
Concentric
8 - 25 ft
12
No
modification
required
No
modification
required
For operation at eleva-
tions above 2,000 ft
(610 m) the equip-
ment ratings shall be
reduced at the rate of
4% for each 1,000 ft
(305 m) above sea
level
26 - 46 ft
13
Twin
system
8 - 37 ft
12
38 - 62 ft
13
2000 - 4500 ft
(610 - 1372 m)
Concentric
8 - 25 ft
14*
52*
52*
26 - 46 ft
14*
53*
53*
Twin
system
8 - 37 ft
13*
52*
52*
38 - 62 ft
14*
53*
53*
4500 - 8000 ft
(1372 - 2439 m)
Concentric
8 - 25 ft
14*
53*
53*
26 - 46 ft
16*
53*
53*
Twin
system
8 - 37 ft
14*
53*
53*
38 - 62 ft
15*
53*
53*
* Above 2000 ft, CO
2
levels must be checked with a combustion gas analyzer, see section
6.5
for instructions.
Table 12 Fan speed adjustment
1)
Full equivalent length (inlet + outlet fittings)
i
Do set P2 to greather then 16.
i
Proceed directly to Section 6.5 to confirm
CO
2
values are within range.
