VAL Avionics NAV 2000 Installation Guide download pdf (Page 142)

SV-EMS-220/221 Installation and Configuration

7-34 SkyView System Installation Guide - Revision R

o Available from http://www.bandcspecialty.com – (316) 283-8000 – part number

RCT-1

 Weather Pack crimp tool (common slip joint pliers will also work)

o Available from http://www.whiteproducts.com/tools.shtml

 #2 Phillips screwdriver

 Flathead screwdriver

 ¼” ID tubes, any necessary adapters, and clamps for routing manifold pressure to the

sensor.

 Drill and 1/8” bit

Voltmeter Inputs

Pins 1 and/or Pin 2 of the EMS D37 connector can be used to monitor voltage in your electrical

system (or any other DC voltage source) from 10-30V DC. Connect either of the pins to a point

in your electrical system that you wish to monitor.

Exhaust Gas Temperature (EGT) Probes

Wire length of CHT/EGT harnesses supplied by Dynon is not critical. It is acceptable

to cut the thermocouple (brown) wire of the CHT/EGT harness to shorten the

appropriate length for your installation. It is recommended to not cut the

“armored” portion of the cable near the probe end of the CHT or EGT probes.

The EGT wire may be extended provided that:

1) Type K thermocouple is used for the extension wire. (this is different than CHT

wire)

2) There is no temperature change across the connection between the junction

that is created. For example, do not create a junction across the firewall.

If either of the above guidelines are not followed, your EGT readings will be

incorrect.

Correct placement of EGT probes on the exhaust manifold - per the engine manufacturer’s

guidance - is critical to obtaining accurate readings. Placement differs between engine types

and even specific models. All thermocouple harnesses supplied by Dynon have each function

(e.g., CHT1, EGT1) labeled on each thermocouple pair.

Consult the specific engine’s manual for proper EGT locations.

Rotax 912 (except 912 iS)

For carbureted Rotax 912 engines, only two of the four cylinders are typically monitored for

EGT. Unlike the CHT probes which are mounted on diagonal cylinders, the EGT probes should

be mounted on the two rear cylinders’ exhaust manifolds. It is critical that the EGT probes be

mounted to parallel cylinders’ exhaust manifolds for proper temperature comparison.

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VAL Avionics NAV 2000 Installation Guide Page 142