57
FIGURE 51
F
ILTER LOCATIONS
DOWNFLOW
AIRFLOW
HORIZONTAL
MAINTENANCE
THESE INSTRUCTIONS ARE
I
NTENDED AS AN AID TO
QUALIFIED SERVICE PERSONNEL
FOR PROPER INSTALLATION,
ADJUSTMENT AND OPERATION
OF THIS UNIT. READ THESE
I
NSTRUCTIONS THOROUGHLY
BEFORE ATTEMPTING
INSTALLATION OR OPERATION.
FAILURE TO FOLLOW THESE
INSTRUCTIONS MAY RESULT IN
IMPROPER INSTALLATION,
ADJUSTMENT, SERVICE OR
MAINTENANCE, POSSIBLY
RESULTING IN FIRE, ELECTRICAL
SHOCK, CARBON MONOXIDE
POISONING, EXPLOSION,
PROPERTY DAMAGE, PERSONAL
INJURY OR DEATH.
TABLE 16
F
ILTER SIZES
UPFLOW FILTER SIZES
F
URNACE INPUT BOTTOM SIDE
QUANTITY
W
IDTH MBTUH SIZE SIZE
1
7
1
/2"
45, 60, 75A 15
3
/4"
X 25" 15
3
/4"
X 25" 1
21" 75B, 90, 105 19
1
/4" X 25" 15
3
/4" X 25" 1
2
4
1
/2"
120 22
3
/4"
X 25" 15
3
/4"
X 25" 1
DOWNFLOW/HORIZONTAL FILTER SIZES
FURNACE INPUT
Q
UANTITY
W
IDTH MBTUH
S
IZE
1
7
1
/2"
60, 75A 12" X 20" 2
21" 75B, 90, 105 12" X 20" 2
24
1
/2" 120 14" X 20" 2
!
WARNING