Crown Boiler CHC68-96 - Manual (Page 3)

Only qualified service personnel shall perform installation and service.
2
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On highboy models, this panel will be the lower access panel on the
front of the furnace.
! On lowboy models, remove the access panel at the rear of the furnace
to reach the blower.
o On horizontal / counterflow models, this panel will be the upper access
panel on the front of the furnace.
3. Locate the blower terminal block mounted on the scroll of the blower.
Disconnect the three (3) lead wires that connect the furnace wiring harness
cable to the terminal block. Temporarily tape, or tie back, out of the way the
loose end of the wiring harness cable.
4. Remove the fasteners fixing the blower mounting angles or legs in place.
Retain the fasteners for later reuse.
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On highboy models, remove the burner access panel (located just above
the blower access panel). Then, remove two (2) sheet metal screws
[located about seven (7) inches back from the front surface of the furnace]
driven downward through the blower support panel, and into the support
angles, refer to Figure 1.
(Show depiction here of highboy blower compartment, blower assy.,
retaining screws, and mounting angles and rails. ID components)
Figure 1: Blower Assembly Retaining Screw Locations on the
Highboy Oil Furnace
! On lowboy models, remove two (2) sheet metal screws (and flat
washers) driven downward through legs and into the base panel about
three (3) inches back from the rear of the furnace, refer to Figure 2.
(Show depiction here of lowboy blower compartment, blower assy.,
retaining hardware, blower mounting legs, motor grounding strap. ID
components)
Figure 2: Blower Assembly Retaining Screw Locations on the
Lowboy Oil Furnace
o On horizontal / counterflow models, remove four (4) sheet metal
screws [two (2) on either side of the bower scroll] driven downward
through support angles and into the blower support panel, refer to
Figure 3.