Trane Foundation GCC180-300 Installation Operation & Maintenance page 21

Figure 19. Remove screws from manifold assembly
4. Remove the natural gas orifice spuds from the
manifold. See the following figure.
5. Install the ship-with, natural gas orifice spuds. Engage
threads of manifold and tighten orifice three- and one-
half turns.
Note: Do not overtorque gas orifice spuds.
Figure 20. Remove orifice spuds
6. Disconnect the inducer motor wiring harness.
7. Remove six screws securing the inducer blower
assembly. See Figure 21, and Figure 22.
8. Remove three screws securing the air orifice plate. See
the following figure.
9. Using three screws install the ship-with, air orifice plate.
RT-SVX51L-EN
Figure 21. Remove screws from inducer blower
assembly and air orifice plate
Figure 22. Remove screws from inducer blower
assembly
10. Install the inducer blower assembly using six screws.
Confirm exhaust screen is positioned properly in the
center ID post. See Figure 22.
11. Connect the inducer blower wire harness.
12. Install the manifold bracket using six screws.
13. Remove the TCO1 limit attached to the gas manifold
vertical leg. See Figure 23.
14. Remove and discard the factory-installed, downflow
TCO1 limit.
15. Install the ship-with TCO1 limit for horizontal operation.
See Figure 24.
16. Re-install the gas heat access panel.
Installation
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