Leveling Legs (If Required); Gas Piping - Bryant 395CAV Series Installation, Start-Up, And Operating Instructions Manual

1
17 ⁄ -IN. WIDE
2
CASINGS ONLY:
INSTALL FIELD-SUPPLIED
FILTER FILLER STRIP
UNDER FILTER.
3 "
"
1
24 /
2
1 "
FILTER
SUPPORT
Fig. 6—Bottom Filter Arrangement
(Control Removed for Clarity)
TABLE 3—FILTER INFORMATION (IN.)
FILTER SIZE*
FURNACE
CASING WIDTH
Side Return
14-3/16 (1) 16 X 25 X 1† (1) 14 X 25 X 1 Cleanable
17-1/2 (1) 16 X 25 X 1† (1) 16 X 25 X 1 Cleanable
21 (1) 16 X 25 X 1 (1) 20 X 25 X 1† Cleanable
24-1/2 (2) 16 X 25 X 1† (1) 24 X 25 X 1 Cleanable
* Filters can be field modified by cutting the frame as marked and folding to the
desired size. Alternate sizes can be ordered from your distributor or dealer.
† Factory provided with the furnace.
WARNING: Never operate unit without a filter or with
filter access door removed. Failure to follow this warning
can cause fire, personal injury, or death.
VI. LEVELING LEGS (IF REQUIRED)
When the furnace is used with side inlet(s) and leveling legs are
required, refer to Fig. 7, 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. 7.
1
24 ⁄ -IN. WIDE
2
CASINGS ONLY:
CUT AND FOLD
FACTORY-PROVIDED
FILTERS AS SHOWN
TO DESIRED SIZE.
WASHABLE
FILTER
FILTER
RETAINER
A96030
FILTER
TYPE
Bottom Return
"
5 ⁄
16
3
1 ⁄
4
"
5
⁄
16
Fig. 7—Leveling Leg Installation
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.)
4. Adjust outside nut to provide desired height, and tighten
inside nut to secure arrangement.
VII. GAS PIPING
Gas piping must be installed in accordance with national and local
codes. Refer to the current edition of the NFGC. Canadian
installations must be installed in accordance with NSCNGPIC and
all authorities having jurisdiction.
Refer to Table 4 for the recommended gas pipe size. Risers must
be used to connect to the furnace and the meter.
CAUTION: If a flexible connector is required or al-
lowed by the authority having jurisdiction, black iron
pipe shall be installed at the gas valve and extend a
minimum of 2 in. outside the furnace casing.
Install a sediment trap in the riser leading to the furnace. The trap
can be installed by connecting a tee to the riser leading from the
furnace. Connect a capped nipple into the lower end of the tee. The
capped nipple should extend below the level of the gas controls.
(See Fig. 8.)
Apply joint compound (pipe dope) sparingly and only to the male
threads of each joint. The compound must be resistant to the action
of propane gas.
An accessible manual shutoff valve MUST be installed upstream
of the furnace gas controls and within 72 in. of the furnace. A
1/8-in. NPT plugged tapping, accessible for test gage connection,
MUST be installed immediately upstream of the gas supply
connection to the furnace and downstream of the manual shutoff
valve. Place ground joint union between the gas control manifold
and the manual shutoff valve.
Piping should be pressure tested in accordance with local and
national plumbing and gas codes before the furnace has been
attached. If the pressure exceeds 0.5 psig (14-in. wc), the gas
supply pipe must be disconnected from the furnace and capped
before the pressure test. If the test pressure is equal to or less than
0.5 psig (14-in. wc), turn off electric shutoff switch located on the
—7—
"
5
⁄
16
"
"
3
1 ⁄
4
"
5
⁄
16
"
3
1 ⁄
4
"
3
1 ⁄
4
A89014