Clearances, Roof curb post-installation checks, Roof top duct connections – Goodman Mfg IO-367B User Manual
Page 6: Caution

6
A
LL
CURBS
LOOK
SIMILAR
. T
O
AVOID
INCORRECT
CURB
POSITIONING
,
CHECK
JOB
PLANS
CAREFULLY
AND
VERIFY
MARKINGS
ON
CURB
ASSEMBLY
. I
NSTRUCTIONS
MAY
VARY
IN
CURB
STYLES
AND
SUPERSEDES
INFORMATION
SHOWN
.
CAUTION
See the manual shipped with the roof curb for assembly and
installation instructions.
CLEARANCES
36”; minimum
roof overhang
UNIT CLEARANCES
Adequate clearance around the unit should be kept for safety,
service, maintenance, and proper unit operation. A total clear-
ance of 75” on the main control panel side of the unit is rec-
ommended to facilitate possible fan shaft, coil, electric heat
and gas furnace removal. A clearance of 48” is recommended
on all other sides of the unit to facilitate possible compressor
removal, to allow service access and to insure proper venti-
lation and condenser airflow. The unit must not be installed
beneath any obstruction. The unit should be installed re-
mote from all building exhausts to inhibit ingestion of exhaust
air into the unit fresh air intake.
Insulated
Panels
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 ap-
plied properly. Gasket should be firmly applied to the top of
the curb perimeter, duct flanges and any exposed duct con-
nection frame. If gasket is loose, re-apply using strong
weather resistant adhesive.
P
ROTRUSION
Inspect curb to ensure that none of the utility services (elec-
tric) routed through the curb protrude above the curb.
I
F
PROTRUSIONS
EXIST
,
DO
NO
ATTEMPT
TO
SET
UNIT
ON
CURB
.
CAUTION
ROOF TOP DUCT CONNECTIONS
Install all duct connections on the unit before placing the unit
on rooftop.