Location Requirements; Freeze Protection - Rheem R95P Installation Instructions Manual

GENERAL INFORMATION
W RNING
WHEN THIS FURNACE IS INSTALLED IN A RESI-
DENTIAL GARAGE, IT MUST BE INSTALLED SO THE
BURNERS AND IGNITION SOURCE ARE LOCATED
NO LESS THAN 18 INCHES [450MM] ABOVE THE
FLOOR. THIS IS TO PREVENT THE RISK OF IGNIT-
ING FLAMMABLE VAPORS WHICH MAY BE PRES-
ENT IN A GARAGE. ALSO, THE FURNACE MUST BE
LOCATED OR PROTECTED TO AVOID PHYSICAL
DAMAGE BY VEHICLES. FAILURE TO FOLLOW
THESE WARNINGS CAN CAUSE A FIRE OR EXPLO-
SION, RESULTING IN PROPERTY DAMAGE, PER-
SONAL INJURY OR DEATH.
1. IMPORTANT: If installing the unit over a finished ceiling
or living area, be certain to install an auxiliary conden-
sate drain pan under the entire unit. This auxiliary drain
pan should extend under any evaporator coil installed
with the furnace and the open portion of the conden-
sate drain assembly. See "Condensate Drain/Neutral-
izer" section for more details.
2. IMPORTANT: If using a cooling evaporator coil with this
furnace, be sure the air passes over the heat ex-
changer before passing over the cooling coil. The
cooled air passing over the warm ambient air inside the
heat exchanger tubes can cause condensation inside
the tubes resulting in corrosion and eventual failure.
If these are manual dampers, they must be equipped to
prevent heating or cooling operation unless the damper is
in the full heat or cool position.
3. IMPORTANT: When the furnace is installed, there must
be 1/4" (minimum) to 1/2" (maximum) tilt at the back of
the unit as shown in Figure 3.
NOTE: These furnaces are approved for installation in at-
tics, as well as alcoves, utility rooms, closets and crawl-
spaces. Provisions must be made to prevent freezing of
condensate.

FREEZE PROTECTION

For installations where the furnace may reach temperatures
below 32°F (0°C) (such as an alcove or attic installation),
the installer must take precautions to ensure that the drain
trap and connected drain pipe do not freeze. Local codes
and practices should be followed in order to prevent freez-
ing.
If the drain trap is installed within the furnace cabinet, no
freeze protection is required. When the trap is mounted out-
side or partially outside the cabinet, it must be protected
from freezing. Regardless of the location of the drain trap,
any exposed drain piping must be protected from freezing

LOCATION REQUIREMENTS

as required by local practices or codes. A UL or CSA listed
heat tape or UL or CSA approved heating cable with a rat-
ing of 3-6 watts per foot is acceptable protection when in-
stalled and maintained in accordance with the
manufacturer's instructions. Good installation practices ne-
cessitate that the installer verify heat tape operation in ac-
cordance with the manufacturer's instructions at the time of
installation.
IMPORTANT: Support this unit when installed. Since this
furnace is suitable for attic or crawl space installation, it
may be installed on combustible wood flooring or by using
support brackets.
FIGURE 3
LEVEL TO 1/2" MAX. TILT
1/4" MIN. TO 1/2" MAX. TILT
TOWARD THE FRONT
TOWARD THE FRONT
OF THE CABINET IN ALL
OF THE CABINET IN ALL
INSTALLATIONS AND
INSTALLATIONS AND
ORIENTATIONS
ORIENTATIONS
LEVEL TO 1/2" MAX. TILT
1/4" MIN. TO 1/2" MAX. TILT
TOWARD THE FRONT
TOWARD THE FRONT
OF THE CABINET IN ALL
OF THE CABINET IN ALL
INSTALLATIONS AND
INSTALLATIONS AND
ORIENTATIONS
ORIENTATIONS
UPFLOW / DOWNFLOW
HORIZONTAL (LEFT OR RIGHT)
ST-A1194-13-X0
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