035-16328-002 Rev. C (0902)
Unitary Products Group
5
FIGURE 3 :
Closet To Door Clearance - 6” or Greater
FIGURE 4 :
Furnace To Closet Door Clearance - 1” To 6”
FIGURE 5 :
Furnace To Closet Door Clearance - Less Than 1”
5”or greater * Closet
to Door Clearance
Furnace to Closet Door Clearance —
5 Inches or more
1. 6 inches minimum clearance must be provided on side
where return is located, and
2. 6 inches minimum clearance must be maintained from the
Return Air Grille Part No.
7900-287P/A * White
Return Air Closet Door Part No.
7900-7771/C * White
The closet door
have a minimum of
of free area in the upper half of the door.
MUST
250 Square Inches
250 SQ. IN.
MINIMUM
FREE AREA
50 SQ. IN.
MINIMUM
FREE AREA
250 SQ. IN.
MINIMUM
FREE AREA
B
CLOSET
DOOR
FURNACE
front of furnace.
A
If opening for return air is located in the floor or sidewalls and
below the top of the furnace casing:
Furnace to Closet Door Clearance —
Greater than 1 Inch and Up to 5 Inches
1.
2.
A fully louvered closet door
have a minimum of 250
of free area in the upper half of the door.
MUST
Square Inches
The closet door
have a minimum of
of free area in the upper half of the door and a minimum of
of free area in the lower area of the door.
The lower closet door grille may be omitted if an undercut of
2-1/2 inches is provided in the door.
MUST
250 Square Inches
50 Square Inches
As an option to the lower grill,
an undercut of 2-1/2" will provide
50 Square. Inches of free area.
250 SQ. IN.
MINIMUM
FREE AREA
50 SQ. IN.
MINIMUM
FREE AREA
250 SQ. IN.
MINIMUM
FREE AREA
B
Furnace to Closet Door Clearance —
Less than 1 Inch
The closet door MUST have three return air grilles. The
total free area of the two upper grilles must be minimum
of
. The total free area of the lower
grille MUST be aminimum of
.
250 Square Inches
50 Square Inches
The grilles MUST BE ALIGNED directly opposite the
return air grille of the furnace door.
250 SQ. IN.
MINIMUM
FREE AREA
50 SQ. IN.
MINIMUM
FREE AREA
