SECTION 8: ROOF C URB
41 of 154
SECTION 8: ROOF CURB
The roof curbs that support the air handler and
accessory sections are available for all horizontal air
handlers. See Page 41, Table 20 for roof curb. Roof
curbs are shipped unassembled and require field
assembly. Double check dimensions after assembly
before roof material is installed and compare to the
drawing on Page 40, Figure 30.
NOTE: Before installation, verify that you have the
correct roof curb and all required assembly brackets.
If any components are missing, contact Rapid
Engineering LLC or your RAPID
®
independent
representative.
8.1 Roof Curb Assembly and Installation
Assemble roof curb according to the assembly
drawings in Page 43, Section 32. Supplied hardware
must be torqued to recommended specifications on
Page 8, Table 1.
Place the curb on the roof in the position in which it
will be installed. Check that the diagonal
measurements are within 1/8"(3 mm) of each other.
To ensure a weatherproof seal between the air
handler and the curb, the curb must be level with no
twist from end to end. Shim level as required and
secure curb to roof deck using best building
practices. The curb is self-flashing. Install roofing
material as required.
Table 20: Roof Curbs (availability based on style)
*Curb add required only when an inlet plenum is
ordered with an outside air filter section.
For pitched curbs, insulated curbs, w
ood nailers or
cub mounted vibration isolation, consult the factory.
NOTE: Check the installation location to ensure
proper clearances to combustibles and clearance for
access. Page 8, Section 3.
Crush Hazard
Use proper lifting
equipment and
practices.
Falling Hazard
Use proper safety
equipment and prac-
tices to avoid falling.
Severe Injury Hazard
Use proper lifting
practices and equip-
ment.
Equipment and
accessories are
heavy.
Cut/Pinch Hazard
Wear protective gear
during installation,
operation and
service.
Edges are sharp.
WARNING
Failure to follow these instructions can result in death, injury or property damage.
Style
Fan
and
Burner
Extended Curb (ADD for each section)
Inlet
Coil
Mix
Box
OA
Filter*
Inlet
Plenum
Evap.
Cooling
Section
and
Transition
External
Fan
Motor
with
Belt
Guard
MUA * * * * * *
FR * * * *
AM * * * * * * *
VAV * * * * *
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