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I have had a EDM760 for some time now. I think the most important bit of kit in the panel and I like the data logging. You are correct that its operation is not intuitive at all. I have added a page in my check list which gives the operational high points.
In terms of set-up, check the numbers in your POH. Alternatively, TCM will have the numbers defined. I set the CHT alarm at 380 which is well below red line on the basis that high heat is enemy one for the heads. I have set the EGT alarm at 1550 on the basis that I will see red line if there are valve problems and excess combusion in the exhaust. The K-values are on the transducers. If they are 201B's, by memory, the values are 29.45.
In real life, if I get a long hold for takeoff, I may see the CHT's go slightly higher, but the alarms work great. When just installed it showed me a couple of places where the baffling need work to keep the CHT's in line.
On reaching cruise, the lean find is great. When on a long trip, it is nice to know everything is ok on each cyl. It is a great diagnostic tool.
You will very quickly get a good feel for how your particular aircraft works and what it's normal reading are in flight.
My only wish was an alarm on the OAT as an ice alert.
One final note is that I replaced the spark plug gasket CHT probes for the piggy-backed units so I see all the CHT's the same.
Regards - Dave
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