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Recommended Filter Sizes
CFM
1200
1200
1600
2000
NOTES:
1. Air velocity through throwaway type filters may not exceed 300 feet per minute (91.4 m/min). All velocities over this require the use of high velocity fil-
ters.
2. Do not exceed 1800 CFM using a single side return and a 16x25 filter. For CFM greater than 1800, you may use two side returns or one side and the
bottom or one return with a transition to allow use of a 20x25 filter.
Unit Clearances to Combustibles (All dimensions in inches, and all surfaces identified with the unit in an upflow
configuration)
Application
Top
Upflow
Upflow B-Vent
Downflow
Downflow B-Vent
Horizontal
Horizontal B-Vent
1. Special floor base or air conditioning coil required for use on combustible floor.
2. Line contact only permitted between lines formed by the intersection of the rear panel and side panel (top in horizontal position) of the furnace jacket and build-
ing joists, studs or framing.
ACCESSORIES
PROPANE (LP) CONVERSION KIT -
1NP0347 - All Models
This accessory conversion kit may be used to convert natural
gas units for propane (LP) operation.
SIDE RETURN FILTER RACKS -
1SR0200 - All Models
1SR0302 - All Models
BOTTOM RETURN FILTER RACKS -
1BR0514 or 1BR0614 - For 14-1/2" cabinets
1BR0517 or 1BR0617 - For 17-1/2" cabinets
1BR0521 or 1BR0621 - For 21" cabinets
1BR05xx series are galvanized steel filter racks. 1BR06xx
are pre-painted steel filter racks to match the appearance of
the furnace cabinet.
COMBUSTIBLE FLOOR BASE KIT -
For installation of these furnaces in downflow applications
directly onto combustible flooring material. These kits are
required to prevent potential overheating situations. These
kits are also required in any applications where the furnace in
installed in a downflow configuration without an evaporator
coil, where the combustible floor base kit provides access for
combustible airflow.
1CB0514 - For 14-1/2" cabinets
1CB0517 - For 17-1/2" cabinets
1CB0521 - For 21" cabinets
Johnson Controls Unitary Products
Cabinet
Size
A
B
C
C
Left
Front
Rear
Side
1
6
0
0
1
3
0
0
1
6
0
0
1
3
0
0
1
6
0
0
1
3
0
0
Side
Bottom
(in)
(in)
16 x 25
14 x 25
16 x 25
16 x 25
16 x 25
20 x 25
(2) 16 x 25
20 x 25
Right
Floor/
Flue
Side
Bottom
3
6
Combustible
0
1
Combustible
3
6
1
0
1
1
3
6
Combustible
0
1
Combustible
EAC TRANSITION KITS -
For installation of EAC accessories with these furnaces to
provide easy transition of return airflow through the EAC to
get the proper sealing and reduced airflow leakage.
1TK1001 - For all models using side return
1TK1014 - For 14-1/2" cabinets using bottom return
1TK1017 - For 17-1/2" cabinets using bottom return
1TK1021 - For 21" cabinets using bottom return
MASONRY CHIMNEY KITS -
1CK0603
1CK0604
For installations where these furnaces are vented using
existing or new lined masonry chimneys.
HIGH ALTITUDE PRESSURE SWITCHES -
For installation where the altitude is less than 5,000 feet it is
not required that the pressure switch be changed. For alti-
tudes above 5,000 feet, see kits below.
1PS3301
1PS3302
ROOM THERMOSTATS - A wide selection of compatible
thermosets are available to provide optimum performance
and features for any installation.
1H/1C, manual change-over electronic non-programmable
thermostat.
1H/1C, auto/manual changeover, electronic programmable,
deluxe 7-day, thermostat.
1H/1C, auto/manual changeover, electronic programmable.
* For the most current accessory information, refer to the
price book or consult factory.
Closet
Alcove
Yes
Yes
Yes
Yes
1
Yes
Yes
1
Yes
Yes
No
Yes
No
Yes
445349-CTG-B-0409
Line
Attic
Contact
Yes
No
Yes
No
Yes
No
Yes
No
2
Yes
Yes
2
Yes
Yes
3
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