SkyView - Dynon Avionics

SV-EMS-220 Installation and ConfigurationSV-EMS-220’s +5 volt auxiliary supply for other sensor installations, so make allowances forbreaking out the connection to other areas.Trim and flaps position potentiometers must be calibrated. Your SkyView displayutilizes onscreen wizards that help you do this. Go to the EMS Calibration Menu toaccess these wizards (SETUP MENU > HARDWARE CALIBRATION > EMSCALIBRATION).Coolant Pressure SensorThe coolant pressure sensor may be connected to any general purpose input pin on the SV-EMS-220’s DB37.The Dynon-supplied coolant pressure sensor is a 0-30 psi sensor (Dynon P/N 100411-000). First,mount the pressure sensor to a fixed location using an Adel clamp or other secure method. Thepressure sensor must not be installed directly to the engine due to potential vibrationproblems. Next, connect the sensor to the coolant line using appropriate hoses and fittings. Itspressure port has a 1/8-27 NPT pipe thread fitting; you may need adapters to connect to thepressure port on your engine. Locate (or drill and tap) the pressure port along the coolant line.This port must have a pressure fitting with a restrictor hole in it. This restrictor hole ensuresthat, in the event of a sensor failure, coolant leakage rate is minimized, allowing time for anemergency landing.Crimp a standard ¼” female Faston onto one of the grounds coming from the SV-EMS-220’sEMS 37-pin Main Sensor Harness. Crimp another ¼” female Faston onto the wire thatcorresponds to the desired general purpose input. Push the two Fastons onto the two terminalson the fuel pressure sensor. Polarity is not important.Due to vibration issues, never connect the sensor directly to the engine.If you use Teflon tape or other seal, ensure the sensor casing still maintains a goodconnection to ground.Coolant Temperature SensorThe coolant temperature sensor may be connected to any general purpose input pin on the SV-EMS-220’s DB37.The coolant temperature sensor needs to be installed according to the directions of yourengine’s manufacturer. Dynon Avionics sells temperature sensors with both 5/8-18 UNF (DynonP/N 100409-001) and 1/8-27 NPT (Dynon P/N 100409-000) threads; these are the same asthose used by the oil temperature inputs. If neither of these threads matches those in yourcoolant line, you will need to use adapters or drill/tap your own. Using a crush washer betweenthe sensor and the mating line, screw the sensor into the fitting. Do not over tighten.SkyView System Installation Guide - Revision J 7-39