Orion System MODGAS II - Manual (Page 10)

Section 1 MODGAS II Controller
1-6 Overview and Wiring
Warning:
Use extreme care not to damage any of the electronic components while
mounting the controller. Mark the holes and then remove the MODGAS II
Controller before drilling.
Do not allow metal shavings to fall
onto the circuit boards.
The MODGAS II Controller requires the following electrical connections:
18 Gauge minimum unless otherwise noted.
-24VAC Supply Voltage.......................................................................................2 Conductors
-Supply Air Temperature Sensor ...................................................(24 Ga. Min.) 2 Conductors
-Heat Enable...................................................................................(24 Ga. Min.) 2 Conductors
Tip:
After making all electrical connections, it is advised that you unplug all terminal blocks
on the MODGAS II Controller until you are ready to begin the checkout procedure.
This may help to prevent damage if wiring errors occur elsewhere in the system during
installation or start-up.