York ECO2 YPAL 050 - Manual (Page 22)

22 JOHNSON CONTROLS
FORM 100.50-NOM6 (1207)
Installation
ROOF CURB INSTALLATION
YORK offers an optional roof curb designed specifi cally
for the eco2 foot print. This curb comes as an open
condenser model and is shipped disassembled and
requires fi eld assembly during installation. Refer to
the Installation Manual that is shipped with the roof
curb for specifi c instructions. For bottom supply and
return openings, the curb has matching connections to
ease installation.
The curb should be located according to the location
recommendations above, and properly sealed to prevent
moisture and air leakage into and out of the duct system.
Flexible collars should be used when connecting the
duct work to prevent unit noise transmission and
vibration into the building. The roof curb drawings
contained in the Johnson Controls literature are not
intended as construction documents for fi eld fabrication
of a roof curb. Johnson Controls will not be responsible
for the unit fi t up, leak integrity, or sound level with
fi eld fabricated roof curbs.
Construction documents for fi eld fabricated roof curbs
are available upon request.
Wood or fiber cant strips, roofing
felts, roofi ng material, caulking and
curb-to-roof fasteners are to be fi eld
supplied.