5894307-UIM-B-0920
6
Johnson Controls Ducted Systems
When moving or handling the furnace before installation, leave the
doors on the furnace to provide support and prevent damage or warp-
ing of the cabinet. When lifting the furnace, support the ends of the fur-
nace rather than lifting the furnace by the cabinet flanges at the return
air openings (bottom or sides) or supply air opening.
It is acceptable to use the primary heat exchanger tubes as a lifting
point, provided that the tubes are lifted at the front of the heat exchang-
ers where attached to the vestibule panel. Do not use the top return
bend of the heat exchangers as lifting points because the tubes can
shift out of position or their location brackets/baffles.
SUSPENDED FURNACE/CRAWL SPACE
INSTALLATION
The furnace can be hung from floor joists or installed on suitable blocks
or pads. Blocks or pad installations must provide adequate height to
ensure that the unit is not subject to water damage.
Units can also be suspended from rafters or floor joists using rods, pipe
angle supports, or straps. In all cases, the furnace must be supported
with rods, straps, or angle supports at three locations to correctly sup-
port the furnace. Place one support at the supply end of the furnace,
place one support approximately in the center of the furnace near the
blower shelf, and place the third support at the return end of the fur-
nace. Maintain a 6 in. (15.2 cm) minimum clearance between the front
of the furnace and the support rods or straps.
All six suspension points must be level to ensure correct and quiet fur-
nace operation. When suspending the furnace, use a secure platform
constructed of plywood or other building materials secured to the floor
or ceiling joists. See Figure 5 for details and additional information.
SECTION III: FILTERS
FILTER INSTALLATION
All applications require the use of a field installed filter. All filters and
mounting provision must be field supplied.
Filters must be installed external to the furnace cabinet.
DO NOT
attempt to install filters inside the furnace.
Figure 5:
Typical Suspended Furnace/Crawl Space Installation
Support
Rod
Support
Angle (x3)
Maintain 6” minimum
clearance between support
rods and front of furnace
Figure 6:
Dimensions
Table 2:
Cabinet and Duct Dimensions
Model
Nominal
CFM (m
3
/min)
Cabinet
Size
Cabinet Dimensions (in.)
Approximate
Operating Weights
A (in.)
A (cm)
B (in.)
B (cm)
C (in.)
C (cm)
lb (kg)
60 (17.6)
1200 (34.0)
B
17 1/2
44.4
16 3/8
41.6
13 1/4
33.7
122
80 (23.4)
1600 (45.3)
C
21
53.3
19 7/8
50.5
16 1/2
41.9
136
100 (29.3)
2000 (56.6)
C
21
53.3
19 7/8
50.5
18 1/4
46.4
145
FRONT
33
A
LEFT SIDE
Combustion Air Inlet
Thermostat
Wiring
28.5”
Gas Pipe
Entry
Electrical
Entry
Condensate
Drain
Thermostat
Wiring
RIGHT SIDE
14”
1”
1.5”
23”
Combustion Air Inlet
Gas Pipe
Entry
Electrical
Entry
Condensate
Drain
Optional Return Air
Cutout (Either side)
29.5”
C
SUPPLY END
.56”
.56”
20”
B
3”
23.8”
.56”
Combustion
Air Inlet
RETURN END
B
24.25”
2” Vent
Connection
Outlet
2” Vent
Connection
Outlet
2” Vent
Connection
Outlet
A1119-001
CAUTION
All filters and mounting provision must be field supplied. All installa-
tions must have a filter installed.
!
NOTICE
Single side return above 1800 CFM is approved as long as the filter
velocity does not exceed filter manufacturer’s recommendation and a
transition is used to allow use on a 20 x 25 filter.
