Installation In Upflow And Downflow Applications - Bryant 350MAV Installation, Start-Up, And Operating Instructions Manual

FURNACE
CASING
WIDTH
Downflow Applications on Non-Combustible Flooring
Downflow Applications on Combustible Flooring Using
Furnace with or without CD5 or CK5 Coil Assembly or
17-1/2
Downflow Applications on Combustible Flooring NOT Using
Furnace with or without CD5 or CK5 Coil Assembly or
Downflow Applications on Non-Combustible Flooring
Downflow Applications on Combustible Flooring Using
Furnace with or without CD5 or CK5 Coil Assembly or
21
Downflow Applications on Combustible Flooring NOT Using
Furnace with or without CD5 or CK5 Coil Assembly or
Downflow Applications on Non-Combustible Flooring
Downflow Applications on Combustible Flooring Using
Furnace with or without CD5 or CK5 Coil Assembly or
24-1/2
Downflow Applications on Combustible Flooring NOT Using
Furnace with or without CD5 or CK5 Coil Assembly or
2. For each hole, install nut on bolt and then 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.
NOTE: Bottom closure must be used when leveling legs are used.
See Bottom Closure Panel section.
II. INSTALLATION IN UPFLOW AND DOWNFLOW
APPLICATIONS
NOTE: For downflow applications, this furnace is approved for
use on combustible flooring when special base (available from
manufacturer) Part No. KGASB0201ALL is used. Special base is
not required when this furnace is installed on manufacturer's Coil
Assembly Part No. CD5 or CK5, or Coil Box Part No. KCAKC is
used.
1. Determine application being installed from Table 1.
2. Construct hole in floor per dimensions specified in Table 1
and Fig. 18.
3. Construct plenum to dimensions specified in Table 1 and
Fig. 18.
4. If downflow subbase (KGASB) is used, install as shown in
Fig. 19.
If Coil Assembly Part No. CD5 or CK5 or Coil Box Part
No. KCAKC is used, install as shown in Fig. 20.
NOTE: Remove furnace perforated, discharge duct flanges when
they interfere with mating flanges on coil on downflow subbase.
To remove furnace perforated, discharge duct flange, use wide
duct pliers or duct flange tool to bend flange back and forth until
it breaks off. Be careful of sharp edges. (See Fig. 21.)
TABLE 1—OPENING DIMENSIONS (IN.)
APPLICATION
Upflow Applications
KGASB Subbase
KCAKC Coil Box
KGASB Subbase
KCAKC Coil Box
Upflow Applications
KGASB Subbase
KCAKC Coil Box
KGASB Subbase
KCAKC Coil Box
Upflow Applications
KGASB Subbase
KCAKC Coil Box
KGASB Subbase
KCAKC Coil Box
—14—
PLENUM OPENING
A B
16 24–1/8
15-7/8 19
15-1/8 19
15-1/2 19
19-1/2 24-1/8
19-3/8 19
18-5/8 19
19 19
23 24-1/8
22-7/8 19
22-1/8 19
22-1/2 19
A
PLENUM
OPENING
B
C
Fig. 18—Floor and Plenum Opening Dimensions
WARNING: Do not bend duct flanges inward as shown
in Fig. 21. This will affect airflow across heat exchangers
and may cause limit cycling or premature heat exchanger
failure. Remove duct flange completely or bend it inward
a minimum of 210° as shown in Fig. 21.
NOTE: For 140 size unit when installed in downflow orientation,
cut the white jumper wire off between terminals PLl-6 and PLI-9.
FLOOR OPENING
C D
16–5/8 24–3/4
16-1/2 19-5/8
16-3/4 20-3/8
16-1/2 20
20-1/8 24-3/4
20 19-5/8
20-1/4 20-3/8
20 20
23-5/8 24-3/4
23-1/2 19-5/8
23-3/4 20-3/8
23-1/2 20
D
FLOOR
OPENING
A96283