American Standard YCZ036F1 Installation & Maintenance Manual page 10

ROOFTOP -- UNITS
For roof top applications using a field fabricated frame and ducts,
use the following procedure:
1. The frame must be located and secured by bolting or welding
to the roof. Flashing is required.
2. The hole in the roof must be prepared in advance of installing
the unit.
3. Secure the ducts to the roof.
WEATHER-PROOF
ROOF FLASHING
Page 10
INSTALLATION
TYPICAL ROOFTOP APPLICATION WITH FRAME
RETURN AIR SUPPLY AIR
DUCT
TYPICAL ROOFTOP APPLICATION WITH FRAME
(YCZ036,060F MODELS)
WEATHER-PROOF
DUCT
ROOF FLASHING
RETURN AIR
4. Place the unit on the frame or roof curb. Refer to Figures 9 or
10.
5. Secure the unit to the frame or roof curb.
6. Insulate any ductwork outside of the structure with at least two
(2) inches of insulation and then weatherproof. There must be
a weatherproof seal where the duct enters the structure.
7. Complete the installation according to the instructions in the
following sections of this manual.
(YCZ036,060F)
ANGLE IRON
FLUE
INLET HOOD
ANGLE IRON
FRAME
FLUE
INLET HOOD
ROOF FLASHING
SUPPLY AIR
FRAME