38
TC5-1N5FAB rev.06
TC5-1N5FAB
1
Adjusting Stage 1 Bandwidth
The Stage 1 bandwidth is the temperature interval within which the Stage 1
variable speed fans increase or decrease in speed proportionally to the
temperature (see the diagram above). The bandwidth can be adjusted
between 0.5°F and 20.0°F (0.3°C and 11.1°C).
n
Set the selection knob to
STAGE
1 — BANDWIDTH/TIMER
. The
current bandwidth for Stage 1
flashes on the display.
n
Use the adjustment knob to adjust
bandwidth to the desired value.
2
Adjusting Stage 2 Differential
The Stage 2 cooling differential is the temperature difference between the
moment the Stage 2 constant-speed fans start to run and the moment they
turn off (see the diagram above). The differential can be adjusted between
0.5°F and 20.0°F (0.3°C and 11.1°C).
n
Set the selection knob to
STAGE 2/3.
The current differential for Stage
2 is displayed, alternating with the letters "
St.2"
and "
dif
".
n
Use the adjustment knob to adjust the differential to the desired value.
D
IFFERENTIAL SETTINGS
35
TC5-1N5FAB rev.06
TC5-1N5FAB
1
Specifying Minimum Speed Curve
n
Set the selection knob to
STAGE
1 — MINIMUM SPEED / CURVE
.
The current minimum speed
flashes on the display.
n
Press the push-button. The word
OFF
is displayed, indicating that
the minimum speed curve is de-
activated. If this is not the case,
deactivate the curve as described
below.
Repeat the following steps for each of the six points:
n
Press the push-button once again. A day number is displayed, alter-
nating with the word "
day
".
n
For the first point of the curve, use the adjustment knob to adjust the
day number to the desired value. For all other points of the curve, the
day number can not be adjusted.
n
Press the push-button once again. The minimum speed for that day is
displayed, alternating with the letters "
SPd
".
n
Use the adjustment knob to adjust the minimum speed to the desired
value.
NOTES:
i) The minimum speed curve must be deactivated before specifying the points
on the curve (see below).
ii) All six points of the curve must be specified. If you do not need six
different points, repeat your last minimum speed for each unneces-
sary point of the curve.
