Electronics International FP-5L User Manual

Page 23

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B. Program the Fuel Flow Setting in the FP-5(L) using the following formula:

FF@75% rich x 75

Fuel Flow Setting = ---------------------------------------------------------------

HPmax (max horsepower of your engine) x .75

Note: For most spark ignition piston engines this fuel flow setting will be around 7.0 gallons/hr.

7. AUX Channel Control Setting #1:

The AUX Channel Control Setting #1 configures the AUX Channel as follows:

A. To compensate the % Horsepower Display Mode for leaning, the AUX

Channel must be connected to an EGT or TIT probe. The AUX Control
Setting #1 should be set for the EGT reading on the FP-5(L) AUX Channel
when operating your engine at 75% Power (rich mixture) as described in
step #6 above.

B. When monitoring temperatures other than EGT or TIT, set the AUX Channel Control Setting #1

to "001" (a setting of "001" to "699" will disable the EGT compensation for leaning, enable the

°

F /

°

C

toggle and disable the +/- 5 count snap to "000").

C. When monitoring volts, amps, or any pressure, set the AUX Channel Control Setting #1 to "000"

(a setting of "000" will disable the EGT compensation for leaning, disable the

°

F /

°

C toggle and enable

the +/- 5 count snap to "000"). Enabling the +/- 5 count snap to "000" causes the display in the AUX
Mode to show "000" for readings below 5 counts (i.e., when your engine is off, an oil pressure
reading of 1 psi on the AUX Channel will be displayed as "000.")

8. AUX Channel Control Setting #2:

The AUX Channel Control Setting #2 configures the AUX Channel as follows:

A. To compensate the % Horsepower Display Mode for leaning, fly your aircraft at cruise altitude

(or, if necessary, at lower altitude where you can achieve 75% power) as described in step #6 above.
Lean your engine for an EGT reading of 100

°

F higher than the full rich

EGT reading taken in step #7 above. This EGT reading should be 100

°

F to

150

°

F rich (cooler) of peak EGT. Record the fuel flow displayed on the

FP-5(L) at this mixture setting. Program the recorded fuel flow into the
FP-5(L) for AUX Channel Control Setting #2. When displaying AUX
Channel Control Setting #2 a "L" will be displayed in the upper left corner
of the display.

21

1200

Blinking Digits

L

15.0

Gal/Hr

Blinking Digit

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