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For Integrated Control Motors (ICM) — To configure the 48SX
unit, move the 5 Easy Select board wires to the terminals
which control the airflow. Refer to the Easy Select interface
board (Fig. 22) located next to the terminals and to Fig. 30
and 32.
Perform the following steps for basic system
configuration.
AUX HEAT RANGE (VIO) — The airflow for unit 48SX is
preset at the factory. The airflow selection must not be set at
a setting lower than the default. Refer to Table 15 for airflow
and gas heat input for terminals 1-4.
AC/HP SIZE (BLU) — The preset factory default selection
for AC/HP SIZE (air conditioner/heat pump) is set to
400 cfm/ton. The selection pins are configured for 350 cfm/
ton and 400 cfm/ton.
TYPE (ORN) — The TYPE is a preset factory default se-
lection. The preset factory default setting isAC for the 48SX
units. Default setting should not be altered.
AC/HP CFM ADJUST (BLK) — The preset factory default
selection is MED. Selections HI and LO will adjust the air-
flow supplied for all operational modes (see following table).
The selection options allow installer to adjust airflow to meet
such individual needs as noise and static compensation, etc.
MODE FAN ONLY COOLING HEATING
LO - Adjust −15% −10% −10%
HI - Adjust 15% 10% 10%
AC/HP TIME DELAY (GRY) — Four motor operation delay
options are provided to customize system operation. See
table below:
OPTION TERMINAL DESCRIPTION
30-Sec On/60-Sec
Off Delay Profile
1
Used when it is desirable
to allow system coils time
to heat up or cool down
prior to airflow. Enhances
system efficiency.
No Delay Option 2
Preset factory default setting for
48SX. Used for servicing or
when other components are
used to perform a delay func-
tion (e.g., integrated gas
control).
30-Sec Off Delay 3 Enhances system efficiency.
45-Sec Off Delay 4 Enhances system efficiency.
Table 8A — Superheat Charging Table, 48SS018
TEMP (F)
AIR ENT
COND
EVAP AIR — CFM
600
Evap Air — Ewb (F)
54 56 58 60 62 64 66 68 70 72 74 76
65 SPH 17.3 18.5 19.6 20.8 24.2 27.7 28.5 29.3 29.3 29.3 29.3 29.3
70 SPH 13.8 14.9 16.1 17.3 20.7 24.1 25.7 27.3 27.3 27.3 27.3 27.3
75 SPH 10.2 11.4 12.5 13.7 17.1 20.6 22.9 25.2 25.2 25.2 25.2 25.2
80 SPH 8.2 8.8 9.5 10.2 13.6 17.0 20.1 23.1 23.9 24.1 25.4 26.1
85 SPH 6.1 6.2 6.5 6.6 10.0 13.5 17.3 21.1 22.6 24.1 25.6 27.1
90 SPH * * * 5.0 8.1 11.4 15.2 19.0 20.5 22.0 23.5 25.0
95 SPH ****6.29.413.2 17.0 18.5 20.0 21.5 23.0
100 SPH *****7.311.114.9 17.2 19.5 21.7 24.0
105 SPH *****5.39.112.9 15.9 18.9 21.9 24.9
110 SPH ******6.710.8 13.8 16.8 19.8 22.8
115 SPH *******8.811.814.8 17.8 20.8
LEGEND
Ewb — Entering Wet Bulb
SPH — Superheat at Compressor (F)
*Do not attempt to charge system under these conditions — refrig-
erant slugging may occur.
Table 8B — Superheat Charging Table, 48SS024
TEMP (F)
AIR ENT
COND
EVAP AIR — CFM
800
Evap Air — Ewb (F)
54 56 58 60 62 64 66 68 70 72 74 76
65 SPH 18.2 19.0 19.9 20.7 22.5 24.2 25.1 25.9 26.6 27.2 27.9 28.6
70 SPH 17.1 17.6 18.1 18.6 20.4 22.1 23.0 23.9 24.9 26.0 27.1 28.1
75 SPH 16.0 16.2 16.4 16.6 18.3 20.1 21.0 21.8 23.3 24.8 26.2 27.7
80 SPH 14.8 14.7 14.6 14.5 16.3 18.0 19.7 21.3 22.4 23.5 24.6 25.8
85 SPH 13.7 13.3 12.9 12.5 14.3 16.0 18.4 20.7 21.5 22.3 23.1 23.8
90 SPH 11.1 10.9 10.7 10.4 12.2 13.9 16.3 18.7 19.9 21.0 22.2 23.4
95 SPH 8.5 8.4 8.4 8.4 10.1 11.9 14.3 16.6 18.2 19.8 21.4 23.0
100 SPH 7.3 7.5 7.7 7.9 8.9 9.9 12.2 14.6 16.6 18.6 20.6 22.6
105 SPH 6.2 6.6 6.9 7.3 7.6 7.8 10.2 12.5 14.9 17.3 19.7 22.1
110 SPH * * * 5.3 5.5 5.8 8.1 10.5 13.3 16.1 18.9 21.7
115 SPH ******6.18.411.614.9 18.1 21.3
LEGEND
Ewb — Entering Wet Bulb
SPH — Superheat at Compressor (F)
*Do not attempt to charge system under these conditions — refrig-
erant slugging may occur.
36