Site Selection - Rheem Gra Series Installation Instructions Manual

c. The heat tape should be
rated at 5 or 6 watts per foot
at 120V.
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. See
Figure 5.
5. IMPORTANT: If installing in a
utility room, be sure the door
is wide enough to:
a. allow the largest part of the
furnace to pass; or
b. allow any other appliance
(such as a water heater)
to pass.
6. IMPORTANT: This furnace is not
approved or recommended for
installation on its back, with
access doors facing upwards.
CLEARANCE -
ACCESSIBILITY
The design of forced air furnaces with
input ratings as listed in the tables
under Figures 6, 7, and 8 are certified
by CSA-International for the
clearances to combustible materials
shown in inches.
See name/rating plate and clearance
label for specific model number and
clearance information.
Service clearance of at least 24
inches is recommended in front of
all furnaces.
NOTE: Use recommended 24"
clearance if accessibility clearances
are greater than fire protection
clearances.
WARNING
!
UPFLOW AND HORIZONTAL
FURNACES ARE DESIGN-
CERTIFIED FOR INSTALLATION
ON COMBUSTIBLE FLOORS.
NOTE, HOWEVER, THAT
FURNACES MUST NOT BE
INSTALLED DIRECTLY ON
CARPETING, TILE OR OTHER
COMBUSTIBLE MATERIAL OTHER
THAN WOOD FLOORING.
INSTALLATION ON A
COMBUSTIBLE MATERIAL CAN
RESULT IN FIRE, CAUSING
PROPERTY DAMAGE, PERSONAL
INJURY OR DEATH.
FIGURE 5
HORIZONTAL FURNACE INSTALLED W/SUPPORT BRACKETS
GAS
PIPE
Upflow furnaces are shipped with a
bottom closure panel installed.
When bottom return air is used,
remove the panel by removing the
two screws attaching the panel to
the front base angle. See Figure 51.

SITE SELECTION

1. Select a site in the building near
the center of the proposed, or
existing, duct system.
2. Give consideration to the vent
system piping when selecting the
furnace location. Be sure the
venting system can get from the
furnace to the termination with
minimal length and elbows.
3. Locate the furnace near the
existing gas piping. Or, if running
a new gas line, locate the
furnace to minimize the length
and elbows in the gas piping.
4. Locate the furnace to maintain
proper clearance to combustibles
as shown in the following tables.
WARNING
!
DO NOT LIFT THE UNIT BY THE
HEAT EXCHANGER TUBES.
DOING SO CAN CRACK THE HEAT
EXCHANGER ASSEMBLY AND
CAUSE CO2 TO BE RELEASED
INTO THE ENVIRONMENT, WHICH
CAN RESULT IN PERSONAL
INJURY OR DEATH.
INTAKE
VENT
ELECTRICAL
CONDUIT
TRAP
WARNING
!
COMBUSTIBLE MATERIAL MUST
NOT BE PLACED ON OR AGAINST
THE FURNACE JACKET. THE
AREA AROUND THE FURNACE
MUST BE KEPT CLEAR AND FREE
OF ALL COMBUSTIBLE
MATERIALS INCLUDING
GASOLINE AND OTHER
FLAMMABLE VAPORS AND
LIQUIDS. PLACEMENT OF
COMBUSTIBLE MATERIALS ON,
AGAINST OR AROUND THE
FURNACE JACKET CAN CAUSE
AN EXPLOSION OR FIRE
RESULTING IN PROPERTY
DAMAGE, PERSONAL INJURY OR
DEATH. THE HOMEOWNER
SHOULD BE CAUTIONED THAT
THE FURNACE AREA MUST NOT
BE USED AS A BROOM CLOSET
OR FOR ANY OTHER STORAGE
PURPOSES.
EXHAUST
FAN
I522
9 9