10
POSITIONING ON CURB
Position unit on roof curb so that the following clearances are
maintained:
1
/
4
in. (6.4 mm) clearance between the roof curb and
the base rail inside the front and rear, 0.0 in. clearance between the
roof curb and the base rail inside on the duct end of the unit. This
will result in the distance between the roof curb and the base rail
inside on the condenser end of the unit being approximately
1
/
4
in.
(6.4 mm).
Although unit is weatherproof, guard against water from higher
level runoff and overhangs.
Flue vent discharge must have a minimum horizontal clearance of
4 ft (1220 mm) from electric and gas meters, gas regulators, and
gas relief equipment. Minimum distance between unit and other
electrically live parts is 48 inches (1220 mm).
Flue gas can deteriorate building materials. Orient unit such that
flue gas will not affect building materials. Locate mechanical draft
system flue assembly at least 48 in. (1220 mm) from an adjacent
building or combustible material.
NOTE: Installation of accessory flue discharge deflector kit will
reduce the minimum clearance to combustible material to 18 in.
(460 mm).
After unit is in position, remove rigging skids and shipping
materials.
Step 7 — Convert to Horizontal and Connect Ductwork
(When Required)
Unit is shipped in the vertical duct configuration. Unit without fac-
tory-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. 7) 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 se-
cure the insulation to the basepan and are not easily seen. See Fig.
8 for position of the notches in the basepan. Seals around duct
openings must be tight. Secure with screws as shown in Fig. 9.
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.
Fig. 7 — Horizontal Conversion Panels
Fig. 8 — Location of Notches
Fig. 9 — Horizontal Duct Panels In Place
CAUTION
Failure to follow this caution may result in equipment damage.
All panels must be in place when rigging. Unit is not designed
for handling by fork truck when panels or packaging are re-
moved.
REMOVABLE HORIZONTAL
SUPPLY DUCT OPENING COVER
REMOVABLE HORIZONTAL
RETURN DUCT OPENING COVER
BASEPAN
NOTCHES
NOTCHES
SCREWS
DUCT COVERS
SHEET METAL
FACE UP
BASEPAN
Summary of Contents for 582J 04-06
Page 4: ...4 Fig 2 Unit Dimensional Drawing ...
Page 5: ...5 Fig 2 Unit Dimensional Drawing cont ...
Page 21: ...21 Fig 38 Typical Perfect Humidity Adaptive Dehumidification System Humidistat Wiring ...
Page 23: ...23 Fig 40 Typical Control Wiring Diagram Electro Mechanical with W7212 ...
Page 25: ...25 Fig 43 Typical IGC Control Wiring Diagram ...
