12
Fig. 7 — Rigging Details
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 de-
tector option may be field-converted to horizontal ducted
configuration. To convert to horizontal configuration, remove
screws from side duct opening covers (see Fig. 8) 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. 9 for position
of the notches in the basepan. Seals around duct openings
must be tight. Secure with screws as shown in Fig. 10. Cover
seams with foil duct tape.
Field-supplied flanges should be attached to horizontal
duct openings and all ductwork should be secured to the
flanges. Insulate and weatherproof all external ductwork,
joints, and roof or building 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.
Fig. 8 — Horizontal Conversion Panels
Fig. 9 — Location of Notches
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.
UNIT MAX WEIGHT LB (KG)
DIMENSIONS IN. (MM)
AB C
50HC*(A,B,D,E)07 1130 (514) 88.0 (2235) 43.0 (1090) 41.5 (1055)
50HC*(D,E)08 1340 (609) 88.0 (2235) 43.0 (1090) 49.5 (1255)
50HC*(D,E)09 1340 (609) 88.0 (2235) 43.0 (1090) 49.5 (1255)
50HC*(D,E)11,12 1580 (718) 88.0 (2235) 31.5 (775) 49.5 (1255)
REMOVABLE HORIZONTAL
SUPPLY DUCT OPENING COVER
REMOVABLE HORIZONTAL
RETURN DUCT OPENING COVER
BASEPAN
NOTCHES
NOTCHES
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