Approved Installation Manual for the Experimental Report No 104
EDM-350 Page 2 of 46 Rev A
Engine Data Management System Date 7-10-2021
1. Revisions
2. Read This First
• The following notes apply to a new installation. Read this section before proceeding.
• If you are installing CIES sender for fuel level DO NOT get the power to drive the CIES senders from the EDM
but install an independent power source to the CIES with it’s own CB.
• The JPI warranty found in the back of the pilots guide clearly states that JPI will replace defective parts under
warranty, but does NOT cover labor to remove or install any parts.
• The most common cause of probe problems is poor terminal crimps. Crimp ring terminals with AMP tool or
equivalent. Fold back the wire double before crimping terminals.
• Do not use aluminum fittings or Teflon tape with the fuel flow transducer.
• Write down the K-factor engraved on the side of the fuel flow transducer here _______. Once the transducer is
installed and covered with the fire sleeve, you will not be able to access this K factor.
• Determine the locations of all holes before drilling to ensure that nothing interferes with the probe, clamp, clamp
screw or wire.
• Provide service loops at the instrument so that it can be moved for maintenance or troubleshooting.
• Thermocouple wire length is not critical. Trim to required length, allowing for service loops at the engine so that
probes can be swapped with probes on adjacent cylinders for troubleshooting purposes.
• Dress all wires away from high temperature components such as exhaust stacks.
• Never splice thermocouple wire using copper wire. Use only K-type thermocouple wire. Solder using zinc
chloride flux such as Nokorode brand – rosin flux alone will not work.
• Observe correct polarity on all probe wires. Connect like colors together (red to red, yellow to yellow).
• The instrument must be grounded at the engine, not at the avionics ground.
• Make an entry in the aircraft logbook.
• Note: Removal of probes, sensors and the instrument is the reverse of the installation procedure.
Do not install an Experimental EDM-350 in a certified aircraft.
If the EDM-350 is configured to monitor the aircrafts fuel tanks, the EDM-350 must be calibrated to the aircraft fuel
system and the EDM-350's accuracy must be verified before flying the aircraft.
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