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FIGURE 2 – UPFLOW/HORIZONTAL
FIGURE 3 – DOWNFLOW/HORIZONTAL
CONFIGURATION
CONFIGURATION
TO CONVERT FROM DOWNFLOW TO
UPFLOW CONFIGURATION
1. Lay the furnace on its back.
2. Remove the front door.
3. Remove the seven sheet metal screws that are
used to fasten the top cap to the casing. Re-
move the top cap and save the screws.
4. Remove the four sheet metal screws that are
used to fasten the bottom cap to the casing.
Remove the bottom cap and save the screws.
5. Unplug the vent blower wires.
6. Disconnect the pressure hose from the vent
blower.
7. Remove the four machine screws that fasten the
vent blower to the vent pan and save the
screws. Leave the gasket in place on the pan.
8. Remove the two extra machine screws in the
vent pan front and save the screws.
9. Rotate the vent blower and transition 180° so
that its outlet points to the outlet air end of the
furnaces as shown in Figure 2.
10. Line up the vent blower mounting holes with the
holes in the vent pan and screw it into place.
Use the same machine screws that held the vent
blower in place previously.
11. Install the two extra machine screws in the two
open holes in the front of the vent pan (See Fig-
ure 2).
12. Plug in the vent motor wires.
13. Plug the pressure hose into the vent blower.
14. Remove the rectangular knockout in the center
of the top cap (See Figure 5.)
15. Install the top cap at the same end of the
furnace as the vent blower, using the sheet
metal screws saved earlier (See Figure 2).
16. Install the bottom cap on the bottom of the
furnace using the sheet metal screws saved
earlier (See Figure 2).
17. The conversion is now complete. The furnace
may now be installed in the upflow position or in
the horizontal position on either side.
