Carrier 50HX Installation, Start-Up, And Operating Instructions Manual page 11

INDOOR BLOWER ACCESS PANEL
(REMOVE SCREWS)
6. Disconnect the plug assemblies from the indoor-fan motor
(See Fig. 15 & 17).
7. Remove screws securing indoor blower housing to blower
shelf and carefully slide out blower housing. There is a filler
bracket attached to the blower shelf; remove this filler bracket
and retain for later use (See Fig. 16).
8. Locate lances in unit base insulation that are placed over the
perimeter of the vertical discharge opening cover (See Fig.
13).
9. Using a straight edge and sharp knife, cut the insulation
around the perimeter of the cover. Remove the screws
securing the cover to the unit base and slide out the cover.
Discard the cover. Install filler bracket removed in Step 6.
10. If unit ductwork is to be attached to vertical opening flanges
on the unit base (jackstand applications only), do so at this
time.
11. It is recommended that the unit base insulation around the
perimeter of the vertical opening be secured to the unit base
with aluminum tape to prevent the insulation from tearing or
bunching up when the blower housing is installed in the
vertical discharge position.
12. Remove screws securing the high-voltage raceway to duct
panel. Temporarily place raceway on top of unit until blower
housing is installed.
Fig. 13—Removing Insulation and Vertical Duct Cover
Fig. 14—Indoor Blower Access Panel
13. Orient blower housing for vertical airflow (blower motor
adjacent to horizontal duct opening) and slide into vertical
opening making sure the flanges on the blower side plates
engage the tabs in the unit base (See Fig. 15). Resistance will
be felt as the blower housing contacts the unit base insulation;
this can be overcome by applying a slight force to the base of
the blower. Continue sliding blower in until hole in side plate
flange aligns with the hole in the unit base. Secure using screw
removed in Step 6.
14. Reinstall the high-voltage raceway removed in Step 12.
15. Cover the horizontal duct openings. Duct covers can be
ordered as an accessory or field fabricated (See Fig. 20).
16. Reinstall the indoor coil and indoor blower access panels.
17. After completing unit installation, perform all safety checks
and power up unit.
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