Air Handler Mounting To Roof Curb - Weather-Rite XT112 Installation, Operation & Service Manual

S XT I , O S M
ERIES NSTALLATION PERATION AND ERVICE ANUAL

7.2 Air Handler Mounting to Roof Curb

After the curb has been installed, the air handler may be placed on the curb. See Page 14, Figure 4. After the
air handler is in place, the installer must fasten the air handler to the curb. This is accomplished by drilling
holes down through the floor of the air handler and into the curb. At least three #12 sheet metal screws
(supplied by others) equally spaced on each side must be used to attach the air handler to the curb. After the
curb has been installed, the air handler may be placed on the curb. There must be a 1/8" (.3 cm) x 2" (5.1
cm) neoprene closed cell, adhesive-back gasket (supplied by others) between the top of the curb and the
base surface of the air handler to prevent moisture from leaking into the building from either driving rains or
melting snow. The installer is responsible for tying the air handler to the curb per all applicable codes.
FIGURE 4: Curb Mounting
Air Handler
Roof Curb
Fastening Detail
14