57
FIGURE 51
FILTER LOCATIONS
DOWNFLOW
AIRFLOW
HORIZONTAL
MAINTENANCE
THESE INSTRUCTIONS ARE
INTENDED AS AN AID TO
QUALIFIED SERVICE PERSONNEL
FOR PROPER INSTALLATION,
ADJUSTMENT AND OPERATION
OF THIS UNIT. READ THESE
INSTRUCTIONS 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
FILTER SIZES
UPFLOW FILTER SIZES
FURNACE INPUT BOTTOM SIDE
QUANTITY
WIDTH MBTUH SIZE SIZE
17
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
24
1
/2" 120 22
3
/4" X 25" 15
3
/4" X 25" 1
DOWNFLOW/HORIZONTAL FILTER SIZES
FURNACE INPUT
QUANTITY
WIDTH MBTUH
SIZE
17
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