Page 2–16 2104349 rev. AD9) Remove the nut, sealing ring and grommet from the cord connector. Slidethe nut, sealing ring and grommet over the end of the cable, and insert thecable through the body of the cord connector. Leave enough of the cable onthe outside of the unit to allow the cable to dip below the level of the accesshole. This provides a path for moisture to run away from the unit to thelowest point of the cable.10) On the inside of the enclosure, allow enough cable to comfortably extend tothe input terminals on the charger regulator (see Figure 2–14).11) Slide the nut, sealing ring and grommet to the cord connector on the side ofthe unit, and tighten.12) Before making connections to the charger regulator, trim the wire ends back¼”.13) Verify that the main battery pack is connected.14) Loosen the securing screws on the charger regulator, insert the wire andthen retighten. Connect the solar panel (+) lead to the + terminal and the (-)wire to the – terminal.15) Following the connection of the solar panel power cable, secure the cable tothe 2” extension and mounting pipe cable with the provided plastic tie-wraps.2.2.11 AC charging unit installationThe AC power charging unit maintains a constant voltage charge on the installedbattery pack (see Figure 2–15).2.2.11.1 Materials supplied- AC charging unit- Pipe nipple2.2.11.2 Materials not supplied- Plastic cable ties- AC wiring, conduit (rigid or flexible)To maintain system certification, all wiring must comply withNEC 501 code and applicable ABB certification drawings.To prevent injury, only a licensed electrician should installAC power wiring to the user supplied primary AC powersource.2.2.11.3 Step-by-step instructions1) The AC charging unit is shipped separately. When the unit is received,unpack, and inspect all components for evidence of damage. Reportdamage to the shipping carrier and to Totalflow’s Service Department.2) Remove one of the plugs from the side of the 6270 OEU so that the ACcharging unit can be mounted without obstruction. See Figure 2–15.