810762-UTG-E-1016
Johnson Controls Unitary Products 3
FILTER PERFORMANCE
The airflow capacity data published in the “Blower Perfor-
mance” tables shown represents blower performance WITH-
OUT 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.
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 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.
* - 24" clearance in front and 18" on side recommended for service access.
All furnaces approved for alcove and attic installation.
NOTICE
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.
RECOMMENDED FILTER SIZES
(HIGH VELOCITY 600 FPM)
CFM
Cabinet
Size
Side
(in)
Bottom
(in)
800 A 16 x 25 14 x 25
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
RECOMMENDED FILTER SIZES
(HIGH VELOCITY 600 FPM)
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