Specifications
JOHNSON CONTROLS
2-2
FORM 102.20-N1 (1109)
Installation
Mounting
Units must be installed in such a manner as to provide
enough elevation for properly designed condensate
traps (see Section 2 “Drain - Condensate Drain
Trap”).
Installation Site: Area of roof on which
curb is to be installed must be structur-
ally adequate to support the combined
weight of curb, unit and system uids.
With these combined weights in place,
the resting surface for the unit MUST
be at and level.
Concrete pads often are not as at
as they should be. Shimming and/or
grouting may be necessary. Whether
under the unit base or under the curb,
this is to ensure the unit base is on a
perfectly at plane.
Curb
The curb, which supports the unit, will be shipped
unassembled. It will be necessary to assemble the curb
parts on the job site. Assembly drawing and a hardware
package are shipped with each curb package. It is
important the curb be installed square. If applicable,
ensure pitch orientation is correct.
This “Curb Assembly and Installation Instruction” is
typical. Use it in conjunction with the specic drawing
supplied with each curb.
Should there be any questions as to
the number of pieces of curb parts or
assembling of the curb, notify Johnson
Controls immediately.
Curb, nailer, and gasket are supplied.
All other parts such as wood or ber
cant strips, roong felts, roong mate-
rial, caulking and curb-to-roof fasten-
ers are to be eld supplied.
Be sure the supporting structures will
not obstruct the duct, piping or wiring
connections.