Operating instructions
Table 14_8GS Wet Coil Pressure Drop
UNIT SIZE AIRFLOW PRESSURE DROP
48GS (CFM) (IN. WG)
900 0.065
030 1000 0.080
1100 0.097
1100 0.084
036 1200 0.100
1300 0.177
1300 0.103
042 1400 0.120
1500 0.138
1500 0.088
048 1600 0.100
1700 0.113
1900 0.108
060 2000 0.120
2100 0.132
Table 1,5_48GX Wet Coil Pressure Drop
UNIT SIZE AIRFLOW PRESSURE DROP
48GX (CFM) (IN. WG)
900 0.0687
030 1000 0.083
1100 0.150
1100 0.084
036 1200 0.100
1300 0,177
1300 0.099
042 1400 0.177
1500 0.204
1500 0.199
048 1600 0.137
1700 0,156
1900 0.108
060 2000 0,120
2100 0.132
(060) 60HZ CHARGING CHART _RT
F
= _ I I 105
_620 904 ; _,_ L_ '2, 85
_,_ _1 75
,F " L, I _ IV 45
==_o_ , i -"
"i. 'k
_41_ z60d
I'
v _
30 40 50 60 70 80 90
SU_TION LIN ETEMPERATURE I°Ft
I I I I
4 10 16 21
SUCTION UNE TEMPERATURE (_C)
I
27 32
Fig. 2_Cooling Charging Chart, 48GX060 Units
26
INDUCED DRAFT MOTOR MOUNT
ROLLOUT
SWITCH
COLLECTOR BLOWER BURNER MOUNTING
BOX HOUSING RACK SCREW
C99022
Fig. 27--Blower Housing and Flue Collector Box
FRONT
ACCESS PANEL
Fig. 28_Unit Access Panel
C99091
c. Remove caked-on dirt from wheel and housing with a
brush. Remove lint and/or dirt accumulations from wheel
and housing with vacuum cleaner, using soft brash attach-
ment. Remove grease and oil with mild solvent.
d. Reassemble wheel into housing.
e. Reassemble motor into housing. Be sure setscrews are
tightened on motor shaft fiats and not on round part of
shaft.
f. Reinstall unit access panel
3. Restore electrical power to unit. Start unit and check for
proper blower rotation and motor speeds during heating and
cooling cycles.
FLUE GAS PASSAGEWAYS
To inspect the flue collector box and upper areas of the heat
exchanger:
1. Remove the combustion blower wheel and motor assembly
according to directions in the Combustion-Air Blower section.