Technical Data Sheet
2
J951X038BU4SAAA
(WITH 5-SPEED ECM MOTOR)
HEATING AIRFLOW (CFM) & TEMPERATURE RISE (°F)
MODEL NAME/
HEATING INPUT
RETURN
AIR VIA:
MOTOR
SPEED
External Static Pressure (in. w.c.)
0.1 0.2 0.3 0.4 0.5
CFM RISE CFM RISE CFM RISE CFM RISE CFM RISE
J951X038BU4SAAA
38,000 BTU/Hr
Bottom
5 - High*
4 - Alternate
3 - Med-High** 1,340 25 1,300 26 1,260 27 1,215 28
2 - Med-Low 1,185 28 1,140 29 1,100 30 1,055 32 1,010 33
1 - Low*** 985 34 945 35 900 37 855 39 800 42
Side
5 - High*
4 - Alternate
3 - Med-High** 1,325 25 1,285 26 1,245 27 1,205 28
2 - Med-Low 1,180 28 1,135 29 1,100 30 1,055 32 1,005 33
1 - Low*** 980 34 935 36 890 38 845 40 790 42
COOLING AIRFLOW (CFM)
MODEL NAME/
HEATING INPUT
RETURN
AIR VIA:
MOTOR
SPEED
External Static Pressure (in. w.c.)
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
CFM CFM CFM CFM CFM CFM CFM CFM
J951X038BU4SAAA
38,000 BTU/Hr
Bottom
5 - High* 1,765 1,720 1,680 1,640 1,600 1,560 1,515 1,480
4 - Alternate 1,560 1,520 1,480 1,440 1,400 1,360 1,315 1,270
3 - Med-High** 1,380 1,340 1,300 1,260 1,215 1,175 1,125 1,090
2 - Med-Low 1,185 1,140 1,100 1,055 1,010 970 915 875
1 - Low*** 985 945 900 855 800 760 705 665
Side
5 - High* 1,750 1,710 1,675 1,635 1,600 1,565 1,520 1,475
4 - Alternate 1,550 1,510 1,465 1,425 1,385 1,350 1,310 1,265
3 - Med-High** 1,365 1,325 1,285 1,245 1,205 1,165 1,115 1,070
2 - Med-Low 1,180 1,135 1,100 1,055 1,005 965 920 865
1 - Low*** 980 935 890 845 790 745 685 635
*NOTES:
1. To comply with government mandated efficiency standards, two openings are required for airflows above 1,600 CFM.
2. Data is shown without filter.
3. Temperature rises in the table are approximate. Actual temperature rises may vary.
4. Individual cells shaded in gray indicate a temperature rise outside of the recommended range.
5. To comply with government mandated efficiency standards, speed settings shaded in gray are not allowed in HEAT mode.
6. Unit ships with (4) speeds pre-wired. Use of the fifth speed will require changing the appropriate wires at the motor connection. Consult the
wiring diagram for more information.
* Factory Set Cool
** Factory Set Heat
*** Factory Set Circulation