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"B"
REQUIRED
SPREADER
BARS
UNIT
50HCQA04
50HCQA05
50HCQA06
NOTES:
1. SPREADER BARS REQUIRED — Top damage will occur if spreader bars are not used.
2. Dimensions in ( ) are in millimeters.
3. Hook rigging shackles through holes in base rail, as shown in detail "A." Holes in base rails are centered around the unit center of
gravity. Use wooden top to prevent rigging straps from damaging unit.
Step 7 — Convert to Horizontal and Connect
Ductwork (when required)
Unit is shipped in the vertical duct configuration. Unit without
factory-installed economizer or return-air smoke detector option
may be field-converted to horizontal ducted configuration. To
convert to horizontal configuration, remove screws from side duct
opening covers (see Fig. 10) and remove covers. Use the screws to
install the covers on vertical duct openings with the insulation-side
down. The panels must be inserted into the notches on the basepan
to properly seal. The notches are covered by the tape used to
secure the insulation to the basepan and are not easily seen. See
Fig. 11 for position of the notches in the basepan. Seals around
duct openings must be tight. Secure with screws as shown in
Fig. 12. Cover seams with foil duct tape.
Field-supplied flanges should be attached to horizontal duct open-
ings and all ductwork should be secured to the flanges. Insulate
and weatherproof all external ductwork, joints, and roof or build-
ing openings with counter flashing and mastic in accordance with
applicable codes.
Do not cover or obscure visibility to the unit's informative data
plate when insulating horizontal ductwork.
36"- 54"
PLACE ALL SEAL STRIP IN PLACE
(914-1371)
BEFORE PLACING UNIT ON ROOF CURB.
"C"
"A"
SEE DETAIL "A"
MAX WEIGHT
lb
kg
in.
725
330
74.5
845
384
74.5
900
409
74.5
Fig. 9 — Rigging Details
DUCT END
DIMENSIONS
A
B
mm
in.
1890
48.5
1890
37.5
1890
37.5
REMOVABLE HORIZONTAL
RETURN DUCT OPENING COVER
Fig. 10 — Horizontal Conversion Panels
NOTCHES
Fig. 11 — Location of Notches
12
DETAIL "A"
C
mm
in.
mm
980
33.5
850
955
41.5
1055
955
41.5
1055
REMOVABLE HORIZONTAL
SUPPLY DUCT OPENING COVER
NOTCHES
BASEPAN
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