For Integrated Control Motors (ICM) Ð To con®gure the 48SX unit, move the 5 Easy Select board wires to the terminals which control the air¯ow. 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 con®guration.
AUX HEAT RANGE (VIO) Ð The air¯ow for unit 48SX is preset at the factory. The air¯ow selection must not be set at a setting lower than the default. Refer to Table 15 for air¯ow and gas heat input for terminals
AC/HP SIZE (BLU) Ð The preset factory default selection for AC/HP SIZE (air conditioner/heat pump) is set to 400 cfm/ton. The selection pins are con®gured for 350 cfm/ ton and 400 cfm/ton.
TYPE (ORN) Ð The TYPE is a preset factory default se- lection. The preset factory default setting is AC for the 48SX units. Default setting should not be altered.
AC/HP CFM ADJUST (BLK) Ð The preset factory default selection is MED. Selections HI and LO will adjust the air- ¯ow supplied for all operational modes (see following table).
The selection options allow installer to adjust air¯ow 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) Ð Four motor operation delay options are provided to customize system operation. See table below:
OPTION | TERMINAL | DESCRIPTION | |
|
| Used when it is desirable | |
| to allow system coils time | ||
1 | to heat up or cool down | ||
Off Delay Pro®le | |||
| prior to air¯ow. Enhances | ||
|
| ||
|
| system efficiency. | |
|
| Preset factory default setting for | |
|
| 48SX. Used for servicing or | |
No Delay Option | 2 | when other components are | |
used to perform a delay func- | |||
|
| ||
|
| tion (e.g., integrated gas | |
|
| control). | |
3 | Enhances system efficiency. | ||
4 | Enhances system efficiency. |
Table 8A Ð Superheat Charging Table, 48SS018
TEMP (F) |
|
|
|
|
|
| EVAP AIR Ð CFM |
|
|
|
|
| |||||
|
|
|
|
|
|
| 600 |
|
|
|
|
|
| ||||
AIR ENT |
|
|
|
|
|
|
|
|
|
|
|
|
| ||||
|
|
|
|
| Evap Air Ð Ewb (F) |
|
|
|
|
| |||||||
| COND |
|
|
|
|
|
|
|
|
|
| ||||||
|
|
| 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 | * | * | * | * | 6.2 |
| 9.4 |
| 13.2 |
| 17.0 | 18.5 | 20.0 | 21.5 | 23.0 |
100 |
| SPH | * | * | * | * | * |
| 7.3 |
| 11.1 |
| 14.9 | 17.2 | 19.5 | 21.7 | 24.0 |
105 |
| SPH | * | * | * | * | * |
| 5.3 |
| 9.1 |
| 12.9 | 15.9 | 18.9 | 21.9 | 24.9 |
110 |
| SPH | * | * | * | * | * |
| * |
| 6.7 |
| 10.8 | 13.8 | 16.8 | 19.8 | 22.8 |
115 |
| SPH | * | * | * | * | * |
| * |
| * |
| 8.8 | 11.8 | 14.8 | 17.8 | 20.8 |
LEGEND | *Do not attempt to charge system under these conditions Ð refrig- |
Ewb Ð Entering Wet Bulb | erant slugging may occur. |
SPH Ð Superheat at Compressor (F) |
|
Table 8B Ð Superheat Charging Table, 48SS024
TEMP (F) |
|
|
|
|
|
| EVAP AIR Ð CFM |
|
|
|
|
| |||||
|
|
|
|
|
|
| 800 |
|
|
|
|
|
| ||||
AIR ENT |
|
|
|
|
|
|
|
|
|
|
|
|
| ||||
|
|
|
|
| Evap Air Ð Ewb (F) |
|
|
|
|
| |||||||
| COND |
|
|
|
|
|
|
|
|
|
| ||||||
|
|
| 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 | * | * | * | * | * |
| * |
| 6.1 |
| 8.4 | 11.6 | 14.9 | 18.1 | 21.3 |
LEGEND | *Do not attempt to charge system under these conditions Ð refrig- |
Ewb Ð Entering Wet Bulb | erant slugging may occur. |
SPH Ð Superheat at Compressor (F) |
|
36