Filter
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444559-YTG-A-0409
Johnson Controls Unitary Products 3
FILTER PERFORMANCE
The airflow capacity data published in the “Blower Perfor-
mance” table listed above 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.
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 filters.
2. Do not exceed 1800 CFM using a single side return and a 16x25 fil-
ter. 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.
* - 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 -
S1-1NP0347 - All Models
This accessory conversion kit may be used to convert natural
gas (N) units for propane (LP) operation.
CONCENTRIC VENT TERMINATION -
S1-1CT0302 (2") & S1-1CT0302-636 (2")
S1-1CT0303 (3") & S1-1CT0303-636 (3")
For use through rooftop, sidewall. Allows combustion air to
enter and exhaust to exit through single common hole. Elimi-
nates unslightly elbows for a cleaner installation.
SIDEWALL VENT TERMINATION KIT -
S1-1HT0901 (3")
S1-1HT0902 (2")
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.
CONDENSATE NEUTRALIZER KIT - 1NK0301
Neutralizer cartridge has a 1/2" plastic tube fittings for installa-
tion in the drain line. Calcium carbonate refill media is also
available from the Source 1 Parts (p/n 026-30228-000).
SIDE RETURN FILTER RACKS -
S1-1SR0200 - All Models
S1-1SR0402 - All Models
BOTTOM RETURN FILTER RACKS -
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
1BR05xx series are galvanized steel filter racks. 1BR06xx are
pre-painted steel filter racks to match the appearance of the fur-
nace 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.tible floor
base kit provides access for combustible airflow.
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 pro-
vide 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 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 - 080
S1-1PS3307 - 060
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.
Recommended Filter Sizes (High velocity 600 FPM)
CFM
Cabinet
Size
Side
(in)
Bottom
(in)
1200 B 16 x 25 16 x 25
1600 C 16 x 25 20 x 25
2000 C (2) 16 x 25 20 x 25
2000 D (2) 16 x 25 22 x 25
Unit Clearances to Combustibles
Application
Upflow Downflow Horizontal
Top 1" 0" 0"
Vent 0" 0" 0"
Rear 0" 0" 0"
Side 0" 0" 1"
Front* 0" 0" 0"
Floor Combustible
Combustible
1
1. For combustible floors only when used with special sub-base.
Combustible
Closet Yes Yes Yes
Line Contact No No Yes