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