Cd20D3 - American Standard UY060R9V3W Series Installer's Manual

Installer's Guide
HORIZONTAL VENTING THROUGH WALL
These furnaces may be installed as direct vent (as
shipped) or as nondirect vent. Installation must
conform to national, state, and local codes.
The vent & inlet terminals must be located at least 12"
minimum above normally expected snow accumulation level.
Avoid areas where staining or condensate drippage may be a
problem.
Location of the vent/wind terminal should be chosen to meet
the requirements of Figure 29 for either direct or nondirect
vent applications.
h
DOWNWARD VENTING
Furnace may be in vertical or horizontal configuration.
All horizontal pipes must be
supported at a maximum of
3 foot intervals
NOTES:
Condensate trap for vent pipe must be a minimum of 6 inches in height.
A)
Condensate trap for vent and inlet pipe must be connected into a condensate drain pump; an open or
B)
vented drain; or it can be connected to the outlet hose of the furnace's condensate trap. Outdoor drain-
ing of the furnace and coil condensate is permissible if allowed by local codes. Caution should be taken
to prevent drains from freezing or causing slippery conditions that could lead to personal injury. Exces-
sive draining of condensate may cause saturated ground conditions that may result in damage to plants.
The condensate trap should be primed at initial start up prior to heating season operation.
C)
18
PITCH – Venting through the wall must maintain 1/4" per
foot pitched upward to insure that condensate drains back to
the furnace.
FLUE GAS DEGRADATION – The moisture content of the
flue gas may have a detrimental effect on some building
materials. This can be avoided by using the roof or chimney
venting option. When wall venting is used on any surface
that can be affected by this moisture, it is recommended that
a corrosion resistant shield (24 inches square) be used behind
the vent terminal. This shield can be wood, plastic, sheet
metal, etc. Also, silicone caulk all cracks, seams and joints
within 3 feet of the vent terminal.
Slope 1/4" per ft.
Slope 1/4" per ft.
DOWNWARD VENT LENGTH IS
LIMITED TO A MAXIMUM OF
15 EQUIVALENT FEET.
40 Inch
Upflow or
Downflow
Furnace
6" Min.

18-CD20D3-18