Trane TR1 Series VFD Installation Instruction page 8

NEMA 12 Installation (continued)
Position option card to back side of cassette. Slide edge of card into
slot in side of cassette. Secure option card by pressing it flush to
cassette. Insert two self-tapping screws provided in holes in upper
left and bottom center of card. Tighten to 7 in-lb. (0. 8 N-m).
Connect two ribbon cables. Hinge cassette from top. Reinsert screws
and tighten to 8 in-lb. (0.9 N-m). Plug in control terminal strips. Wire
option card as described in Wiring.
4
3
5
End view
Back side of cassette
8