Lennox Hearth G8 - Manual (Page 38)

Connecting the IRD Ground Wire
A grounding wire has been provided to connect your IRD to a
suitable ground. Attach the grounding wire to any suitable screw
on the rear panel of the IRD with a good contact with the IRD
chassis. The other end should be connected to a suitable ground,
ideally to the MCU ground terminal (route the ground wire to the
MCU and leave unconnected for now). Each IRD that you connect
to the TracVision system should have a similar ground
connection.
If you are using a multiswitch, you can ground the multiswitch instead
of the individual IRDs.
2.4 Wiring the MCU
All other wiring for the TracVision system connects at the rear
panel of the MCU.
For the TracVision system to work, you must connect the
following cables to the MCU:
• Antenna data/power cable
• Vessel power cable
• IRD ground cable(s)
Figure 2-16 shows the MCU’s rear panel connectors. Refer to this
figure when wiring components to the MCU.
Installation
54-0198 35
Figure 2-16
MCU Rear Panel
Antenna
Data/Power
Vessel Power
& IRD Ground
+ -
Maintenance Port
(for PC diagnostics)
RF PCB Software Flashing Port
(technician’s use only)
Fuse
Be sure to connect a ground cable
from each IRD to a suitable ground,
ideally the MCU ground terminal.
MCU Ground Wire