5
CLEARANCES
Unit Clearances
*In situations that have multiple units, a 36” minimum
clearance is required between the condenser coils.
Adequate clearance around the unit should be kept for
safety, service, maintenance, and proper unit operation.
A clearance of 48” is recommended on all sides of the
unit to facilitate possible parts replacement, to allow
service access and to insure proper ventilation and
condenser airflow. The top of the unit should be completely
unobstructed. If units are to be located under an overhang,
there should be a minimum of 48” clearance and provisions
made to deflect the warm discharge air out from the
overhang. The unit should be installed remote from all
building exhausts to inhibit ingestion of exhaust air into the
unit fresh air intake.
Roof Curb Installation
ROOF CURB POST-INSTALLATION
CHECKS
After installation, check the top of the curb, duct connection
frame and duct flanges to make sure gasket has been
applied properly. Gasket should be firmly applied to the top
of the curb perimeter, duct flanges and any exposed duct
connection frame. If gasket is loose, re-apply using strong
weather resistant adhesive.
Protrusion
Inspect curb to ensure that none of the utility services
(electric) routed through the curb protrude above the curb.
CAUTION
If protrusions exist, do not attempt to set unit on curb.
ROOF TOP DUCT CONNECTIONS
Install all duct connections on the unit before placing the
unit on rooftop.
Horizontal Discharge
Refer to IOD-7082 included in the literature pack for
installing horizontal duct covers.
Flexible duct connectors between the unit and ducts are
recommended. Insulate and weatherproof all external
ductwork and joints as required and in accordance with
local codes.
5
6-3/16
7-3/8
SUPPLY
12" X 17"
RETURN
11" X 25"
Horizontal Discharge Duct Connections
RIGGING DETAILS
WARNING
To prevent property damage, the unit should remain in an
upright position during all rigging and moving operations.
To facilitate lifting and moving when a crane is used, place
the unit in an adequate cable sling.
