Filter Arrangement; Leveling Legs (If Required) - Carrier weathermaker 8000 Installation, Start-Up And Operator's Manual

For Example:
58WAV FURNACE FREE AREA PER OPENING
INPUT BTUH
44,000
66,000
88,000
110,000
132,000
154,000
For Example:
58WAV FURNACE FREE AREA PER OPENING
INPUT BTUH
44,000
66,000
88,000
110,000
132,000
154,000
c. When ducts are used, they must be of the same cross-
sectional area as the free area of the openings to which they
connect. The minimum dimension of rectangular ducts
must not be less than 3 in. (See Fig. 3.)
DUCTS
TO
OUTDOORS
12" MAX
1 SQ IN.
A
PER 2000
BTUH* SUPPLY
AIR
DUCTS
TO
OUTDOORS
1 SQ IN.
B
PER 2000
BTUH*
12" MAX
RETURN AIR
*Minimum dimensions of 3-In.
NOTE: Use any of the following
combinations of openings:
A & B C & D D & E
Fig. 3—Air For Combustion and Ventilation
(Outside Air)
ROUND PIPE
(SQ IN.) (IN. DIA)
11.0 4
16.5 5
22.0 6
27.5 6
33.0 7
38.5 7
ROUND PIPE
(SQ IN.) (IN. DIA)
22.0 6
33.0 7
44.0 8
55.0 9
66.0 10
77.0 10
1 SQ IN.
PER 4000
BTUH*
D
12"
MAX
VENT
THROUGH
F
ROOF
1 SQ IN.
PER
4000
BTUH*
1 SQ IN.
PER
4000
BTUH*
E
G
12"
MAX
C
12" MAX
DUCT
1 SQ IN.
TO
PER 4000
OUTDOORS
BTUH*
F & G
A89013
Do not install the furnace on its back; safety control operation
will be adversely affected. Never connect return-air ducts to
the back of the furnace. A failure to follow this warning can
cause a fire, personal injury, or death.
Step 3—Filter Arrangement
The factory-supplied filter(s) is shipped in the blower compart-
ment. Determine location for the filter and relocate filter retaining
wire if necessary. See Fig. 4 for side return application and Fig. 5
for bottom return application. See Table 3 to determine correct
filter size for desired filter location. Table 3 indicates filter size,
location, and quantity shipped with the furnace.
WASHABLE
FILTER
Fig. 4—Side Filter Arrangement
(Control Removed for Clarity)
For bottom air-return applications, filter may need to be cut to fit
some furnace casing widths. A bottom closure panel is factory
installed in the bottom of the furnace. When bottom return inlet is
desired, remove and discard the bottom closure panel. Two sets of
hardware are needed for furnaces in 24-1/2-in. wide casings using
2 filters for bottom return. All hardware is provided for filter
installation.
NOTE: Furnaces with a 17-1/2-in. wide casing require an addi-
tional procedure when locating the filter for bottom return-air
application. Field fabricate a sheet metal filler strip 1 X 3 X 24-1/2
in. and install it along side of the filter as shown in Fig. 5. Drive
2 screws through the casing side and into the filler strip to secure
it in place. Filter should rest on the top of the filler strip when
installed.
Never operate unit without a filter or with filter access door
removed. Failure to follow this warning can cause fire,
personal injury, or death.
Step 4—Leveling Legs (If Required)
When the furnace is used with side inlet(s) and leveling legs are
required, refer to Fig. 6, and install field-supplied, corrosion-
resistant 5/16-in. machine bolts and nuts.
NOTE: The maximum length of the bolt should not exceed 1-1/2
in.
1. Lay furnace on its back. Locate and drill 5/16-in. diameter
hole in each bottom corner of furnace as shown in Fig. 6.
2. Install nut on bolt and install bolt and nut in hole. (Install flat
washer if desired.)
3. Install another nut on other side of furnace base. (Install flat
washer if desired.)
5
FILTER
RETAINER
A93045