Maintenance - Rheem Gra Series Installation Instructions Manual

MAINTENANCE

WARNING
!
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.
DISCONNECT MAIN ELECTRICAL
POWER TO THE UNIT BEFORE
ATTEMPTING ANY MAINTE-
NANCE. FAILURE TO DO SO CAN
CAUSE ELECTRICAL SHOCK
RESULTING IN PERSONAL
INJURY OR DEATH.
FIGURE 54
BOTTOM PANEL REMOVAL
JACKET ASSEMBLY
SOLID BOTTOM
NOTE:
BACK FLANGE OF SOLID BOTTOM FITS
UNDERNEATH JACKET. SIDES AND FRONT
FLANGES FIT OVER FLANGES ON JACKET.
SCREW
(2) REQ'D.
54
TABLE 12
FILTER SIZES
FURNACE
WIDTH
17 / " 45, 60, 75
1
2
21"
24 / "
1
2
FURNACE
WIDTH
17 / "
1 2
21"
24 / "
1 2
FILTERS
NOTE: (-)GRJ and (-)GTJ models do
not come from the factory with filters
installed. Filters must be field
installed. See Table 12.
Keep the filters clean at all times.
Vacuum dirt from filter, wash with
detergent and water, air dry
thoroughly and reinstall.
Keep the filters clean at all times.
Vacuum dirt from filter, wash with
detergent and water, air dry
thoroughly and reinstall.
SOLID BOTTOM REMOVAL
UPFLOW FILTER SIZES
INPUT BOTTOM SIDE
MBTUH SIZE SIZE
15 / " X 25" 15 / " X 25"
3 3
4 4
90, 105 19 / " X 25" 15 / " X 25"
1 4 3 4
120 22 / " X 25" 15 / " X 25"
3 3
4 4
DOWNFLOW FILTER SIZES
INPUT
SIZE
MBTUH
45, 60, 75 12" X 20"
90, 105 12" X 20"
120 14" X 20"
JACKET ASSEMBLY
FILTER
QUANTITY
1
1
1
QUANTITY
2
2
2
NOTE: Some filters must be resized
to fit certain units and applications.
See Table 12 and Figures 54 and 55.
1. 21" - 90,000 & 105,000 BTUH
units require removal of a
3.5-in. segment of filter and
frame to get the proper width
for a side filter.
2. 24.5" - 120,000 BTUH unit
requires removal of a 7" segment
of filter and frame to get the
proper width for a side filter.
FILTER & ROD LOCATION
FILTER
ROD