Lochinvar FTXL Installation & Operation Instructions page 7

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CON·X·US Installation
Figure 2-2F_Install SNR CON·X·US Board
3. Connect the 24 volt power harness 100190832 in series with the 24 volt side of the transformer and the other end of the power
harness to the CON·X·US board (see FIG. 2-3).
4. Disconnect the ribbon cable from the rear of the display board and route it to the ribbon cable plug on the CON·X·US board
labeled BIC (remove the ribbon cable from the clip underneath the bezel.
5. Connect the ribbon cable (100189402) to the rear of the display and route on the left side of the CON·X·US board and connect
it to the ribbon cable plug labeled DU (see FIG. 2-3).
6. Reinstall the front panel.
7. Turn the power and gas back ON to the unit and resume operation.
Figure 2-3_Wiring Schematic
CONTROL,USER INTERFACE
CONXUS KIT RIBBON CABLE TO USER INTERFACE
IMG01192
(continued)
DIR# 2000540180 00
CONXUS BOARD
MAIN CONTROL RIBBON CABLE TO CONXUS
Installation and Operation Instructions
CON·X·US BOARD
INSTALL STAND-OFF, HEX,
6-32 X 1/2, STL, NICKEL &
SCREW,PHP,6-32 X 1/4,STL
TRANSFORMER
CONXUS
POWER HARNESS
MAIN CONTROL BOARD
SECONDARY
24V 60VA
UNIT HARNESS
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