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FILTER PERFORMANCE
The airflow capacity data published in the "Blower Perfor-
mance" table listed below represents blower performance
WITHOUT filters.
All applications of these furnaces require the use of field
installed air filters. All filter media and mounting hardware or
provisions must be field installed external to the furnace cabi-
net. DO NOT attempt to install any filters inside the furnace.
NOTE: Single side return above 1800 CFM is approved as long
as the filter velocity does not exceed filter manufacturer's rec-
ommendation and a transition is used to allow use on a 20x25
filter (upflow only).
Recommended Filter Sizes (High velocity 600 FPM)
Cabinet
CFM
Size
1200
B
1600
C
2000
C
2000
D
NOTES:
1. Air velocity through throwaway type filters may not exceed 300 feet per min-
ute (91.4 m/min). All velocities over this require the use of high velocity filters.
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
Application
Top
Vent
Rear
Side
Front*
Floor
Combustible
Closet
Line Contact
1. For combustible floors only when used with special sub-base.
* - 24" clearance in front and 18" on side recommended for service access.
All furnaces approved for alcove and attic installation.
ACCESSORIES
PROPANE (LP) CONVERSION KIT - Kit not required as ori-
fices and gas valve spring are included with unit.
CONCENTRIC VENT TERMINATION - For use through roof-
top, sidewall. Allows combustion air to enter and exhaust to exit
through single common hole. Eliminates unslightly elbows for a
cleaner installation.
S1-1CT0302 (2")
S1-1CT0303 (3")
SIDEWALL VENT TERMINATION KIT - For use on sidewall,
two-pipe installations only. Provide a more attractive termination
for locations where the terminal is visable on the side of the
home.
S1-1HT0901 (3")
S1-1HT0902 (2")
Johnson Controls Unitary Products
Side
Bottom
(in)
(in)
16 x 25
16 x 25
16 x 25
20 x 25
(2) 16 x 25
20 x 25
(2) 16 x 25
22 x 25
Upflow
Downflow
1"
0"
0"
0"
0"
0"
0"
0"
0"
0"
Combustible
Yes
Yes
No
No
CONDENSATE NEUTRALIZER KIT - Neutralizer cartridge has
a 1/2" plastic tube fittings for installation in the drain line. Cal-
cium carbonate refill media is also available from the Source 1
Parts (p/n 026-30228-000).
S1-1NK0301
SIDE RETURN FILTER RACKS (Upflow Only) -
S1-1SR0200 - All Models
S1-1SR0402 - All Models
S1-1SF0101 - All Models
BOTTOM RETURN FILTER RACKS - S1- 1BR05xx series are
galvanized steel filter racks. 1BR06xx are pre-painted steel filter
racks to match the appearance of the furnace cabinet.
S1-1BR0517 or 1BR0617 - For 17-1/2" cabinets
S1-1BR0521 or 1BR0621 - For 21" cabinets
S1-1BR0524 or 1BR0624 - For 24-1/2" cabinets
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. combustible floor base kit provides
clearance for combustible material.
S1-1CB0517 - For 17-1/2" cabinets
S1-1CB0521 - For 21" cabinets
S1-1CB0524 - For 24-1/2" cabinets
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.
S1-1TK1001 - For all models using side return
S1-1TK1017 - For 17-1/2" cabinets using bottom return
S1-1TK1021 - For 21" cabinets using bottom return
S1-1TK1024 - For 24-1/2" cabinets using bottom return
HIGH ALTITUDE PRESSURE SWITCHES - For installation
1
where the altitude is less than 5,000 feet it is not required that
the pressure switch be changed. For altitudes above 5,000 feet,
see kits below.
S1-1PS3306 - 060
S1-1PS3307 - 080
S1-1PS3302 - 100, 120
ROOM THERMOSTATS - A wide selection of compatible ther-
mosets are available to provide optimum performance and fea-
tures for any installation.
1H/1C, manual change-over electronic non-programmable ther-
mostat.
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.
426499-BTG-C-0912
3
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