FIGURE 30
BOTTOM RETURN
DISCONNECT MAIN ELECTRICAL
POWER TO THE UNIT BEFORE
ATTEMPTING ANY MAINTENANCE.
FAILURE TO DO SO CAN CAUSE
ELECTRICAL SHOCK RESULTING
IN SEVERE PERSONAL INJURY OR
DEATH.
FILTERS
NOTE: RGDJ, RGPJ, RGVJ, RGLJ
and RGVH models are not
factory
equipped with filters. Filters must be
field installed.
Keep the air filters clean at all times.
Vacuum dirt from filter, wash with
detergent and water, air dry thoroughly
and reinstall.
1. 14(-45,000 and 50,000 btuh unit
requires removal of 3
1
⁄2( segment of
filter and frame to get proper width
for a bottom filter.
2. 21(-100,000 btuh unit requires
removal of 3
1
⁄2( segment of filter and
frame to get proper width for a side
filter.
3. 24
1
⁄2(-125,000 and 150,000 btuh
units require removal of 7( segment
of filter and frame to get proper
width for a side filter.
TABLE 5 FILTER SIZES
34
MAINTENANCE
WARNING
!
FIGURE 29
RESIZING FILTERS & FRAME
*NOTE: Some filters must be
resized to fit certain units and
applications.
SOLID BOTTOM MAY BE ORDERED AS AN OPTION FROM THE FACTORY.
UPFLOW FILTER SIZES
FURNACE INPUT BOTTOM SIDE
QUANTITY
WIDTH BTUH SIZE SIZE
14 45 & 50 12
1
⁄4" X 25" 15
3
⁄4" X 25" 1
171/2" 67, 75 & 100 15
3
⁄4" X 25" 15
3
⁄4" X 25" 1
21" 100 19
1
⁄4" X 25" 15
3
⁄4" X 25" 1
241/2" 125 & 150 22
3
⁄4" X 25" 15
3
⁄4" X 25" 1
DOWNFLOW FILTER SIZES
FURNACE INPUT
SIZE QUANTITY
WIDTH BTUH
14" 45 & 50 14" X 20" 1
17
1
/2" 67, 75 & 100 12" X 20" 2
21" 100 12" X 20" 2
24
1
/2" 125 & 150 14" X 20" 2
Unit Unit Filter Rod Filter Rod Bottom Side
Size Width 20
3
/4" 24
1
/4"
AE-61659-02 AE-61659-03
45,000 14" 1 Cut Off 3
1
/2" As is
50,000 14" 1 Cut Off 3
1
/2" As is
67,500 17
1
/2" 1 Cut Off 3
1
/2" As is
75,000 17
1
/2" 1 Cut Off 3
1
/2" As is
100,000 17
1
/2" 1 Cut Off 3
1
/2" As is
100,000 17
1
/2" 1 As is Cut Off 3
1
/2"
125,000 24
1
/2" 1 As is Cut Off 3
1
/2"
150,000 24
1
/2" 1 As is Cut Off 3
1
/2"