Unbranded B6EMMX Multi-Speed Air Handler Installation Guide

Unbranded B6EMMX Multi-Speed Air Handler

Product Information

Product Name: B6 Air Handler FSHE Conversion Kit
Purpose: The purpose of this kit is to convert the controls on field- installed B6E and 5-ton B6B air handlers to the combined motor and heater kit circuit board currently in production.

Installation Instructions

1. Make sure power to the unit is turned off and any breakers/disconnects to the unit are deactivated.
2. Remove the upper air handler door.
3. Make note of the DIP switch airflow settings and thermostat wire connections on the unit control board.
4. Disconnect and remove both circuit boards from the unit.
5. Install the replacement board in the unit where the original control board was located. Use the same mounting holes.
6. Remove the old control board from the blower compartment.
7. Refer to Figure 1 for Control Board Removal & Installation.

SWITCH SETTINGS:

A-Cabinet:

B-Cabinet:

C-Cabinet:

Note: Please refer to the instruction manual for detailed information on switch settings.

Airflow Settings:

• 0.1
• 585
• 710
• 845
• 890
• 955
• 1030
• 1115
• 1155
• 1200
• 1240
• 1320
• 1355
• 1405
• 1440
• 1465

Important Safety Information:

Please read all instructions before servicing this equipment. Pay attention to all safety warnings and any other special notes highlighted in the manual. The safety markings used in this manual designate a degree or level of seriousness and should not be ignored.

WARNING: Indicates a potentially hazardous situation that if not avoided, could result in personal injury or death.

CAUTION: Indicates a potentially hazardous situation that if not avoided, may result in minor or moderate injury or property damage.

IMPORTANT: These instructions are primarily intended for qualified individuals experienced in the proper installation of heating and/or air conditioning appliances. All installations must be in accordance with these instructions and with all applicable national and local codes and standards.

If you do not possess mechanical skills or tools, it is recommended to call your local dealer for assistance.

INSTALLATION INSTRUCTIONS

B6 Air Handler FSHE Conversion Kit

IMPORTANT SAFETY INFORMATION

Please read all instructions before servicing this equipment. Pay attention to all safety warnings and any other special notes highlighted in the manual. The safety markings used in this manual designate a degree or level of seriousness and should not be ignored.
WARNING indicates a potentially hazardous situation that if not avoided, could result in personal injury or death.

CAUTION indicates a potentially hazardous situation that if not avoided, may result in minor or moderate injury or property damage.

WARNING
Installing and servicing HVAC equipment can be hazardous due to gas, electrical, or refrigerant components. Observe all precautions in the literature, and on tags and labels attached to the unit. Follow all safety codes. Failure to follow safety recommendations could result in possible damage to the equipment, serious personal injury or death.

IMPORTANT
ATTENTION INSTALLERS:
These instructions are primarily intended to assist qualified individuals experienced in the proper installation of heating and/or air conditioning appliances. Some local codes require licensed installation/service personnel for this type equipment. All installations must be in accordance with these instructions and with all applicable national and local codes and standards.
Please read all instructions carefully before starting the installation. If a problem occurs, check the instructions and follow the recommendations given.
The information shown in these instructions must be followed during the installation of this kit. Unqualified individuals should not attempt to interpret these instructions or install this equipment. If you do not possess mechanical skills or tools, call your local dealer for assistance.

DO NOT DESTROY. PLEASE READ CAREFULLY & KEEP IN A SAFE PLACE FOR FUTURE REFERENCE.

• Use caution when handling or installing this component. Personal injury can occur from sharp metal edges present in all sheet metal constructed equipment.

ABOUT THE CONVERSION KIT
The purpose of this kit is to convert the controls on field installed B6E and 5-ton B6B air handlers to the combined motor and heater kit circuit board currently in production.

INSTALLATION SEQUENCE

1. Make sure power to the unit is turned off and any breakers/disconnects to the unit are deactivated.

2. Remove the upper air handler door.

3. Make note of the DIP switch airflow settings and thermostat wire connections on the unit control board.

4. Disconnect and remove both circuit boards from unit.

5. Install the replacement board in the unit where the original upper control board was mounted, with the seven-segment display closest to the door. See Figure 1.

6. Reroute the motor power and signal wires through the blower deck and connect them to the new board.

7. Connect the transformer harness, heater kit harness (if optional electric heat is installed), and unit power leads.

8. Install the included thermostat harness and reconnect thermostat wires.
   NOTE: The new harness includes an optional violet Dehumidification wire. This is shown in Figure 2.

9. Set the airflow DIP switches to match the original settings.
   NOTE: Table 1 lists additional DIP switch settings for various static pressures. If DIP switch settings need to be adjusted, refer to the table for reference.

10. Reinstall the air handler door and restore power to the unit.

Table 1. B6EM (FSHE) Airflow Data

B6EM

A-CABINET

| SWITCH SETTINGS 0 = OFF, 1 = ON| COOLING OR HEATING AIRFLOW (CFM)
---|---|---
DRY COIL ESP
1/5| 2/6| 3/7| 4/8| 0.1| 0.2| 0.3| 0.4| 0.5| 0.6| 0.7| 0.8
0| 0| 0| 0| 585| 550| 520| 460| 420| 405| —| —
1| 0| 0| 0| 710| 670| 650| 610| 560| 530| 475| 440
0| 1| 0| 0| 845| 790| 765| 715| 680| 655| 625| 580
1| 1| 0| 0| 890| 865| 840| 785| 760| 710| 680| 655
0| 0| 1| 0| 955| 925| 900| 850| 825| 790| 770| 720
1| 0| 1| 0| 1030| 995| 975| 940| 910| 870| 840| 815
0| 1| 1| 0| 1115| 1085| 1060| 1020| 995| 965| 925| 905
1| 1| 1| 0| 1155| 1130| 1095| 1070| 1040| 1010| 985| 950
0| 0| 0| 1| 1200| 1175| 1145| 1110| 1085| 1060| 1025| 1000
1| 0| 0| 1| 1240| 1215| 1195| 1170| 1140| 1110| 1080| 1060
0| 1| 0| 1| 1320| 1290| 1265| 1240| 1215| 1185| 1160| 1130
1| 1| 0| 1| 1355| 1330| 1305| 1280| 1255| 1220| 1200| 1175
0| 0| 1| 1| 1405| 1375| 1345| 1325| 1295| 1275| 1250| 1210
1| 0| 1| 1| 1440| 1415| 1385| 1355| 1325| 1290| 1255| 1215
0| 1| 1| 1| 1465| 1425| 1390| 1355| 1320| 1290| 1260| 1215
1| 1| 1| 1| 1465| 1425| 1390| 1355| 1320| 1290| 1260| 1215

B6EM

B-CABINET

| SWITCH SETTINGS 0 = OFF, 1 = ON| COOLING OR HEATING AIRFLOW (CFM)
DRY COIL ESP
1/5| 2/6| 3/7| 4/8| 0.1| 0.2| 0.3| 0.4| 0.5| 0.6| 0.7| 0.8
0| 0| 0| 0| 600| 550| 430| 390| —| —| —| —
1| 0| 0| 0| 660| 610| 540| 460| 425| —| —| —
0| 1| 0| 0| 830| 750| 695| 640| 580| 520| —| —
1| 1| 0| 0| 860| 825| 765| 690| 630| 600| 525| 485
0| 0| 1| 0| 935| 895| 835| 790| 710| 655| 620| 585
1| 0| 1| 0| 1045| 975| 920| 875| 830| 795| 720| 685
0| 1| 1| 0| 1095| 1040| 995| 950| 900| 850| 805| 750
1| 1| 1| 0| 1155| 1105| 1060| 1010| 965| 920| 870| 825
0| 0| 0| 1| 1230| 1185| 1140| 1090| 1045| 1010| 965| 920
1| 0| 0| 1| 1285| 1260| 1210| 1165| 1125| 1080| 1040| 1010
0| 1| 0| 1| 1330| 1290| 1245| 1205| 1170| 1125| 1085| 1045
1| 1| 0| 1| 1395| 1365| 1315| 1275| 1235| 1205| 1160| 1130
0| 0| 1| 1| 1450| 1405| 1375| 1335| 1295| 1260| 1220| 1180
1| 0| 1| 1| 1490| 1450| 1410| 1385| 1340| 1300| 1270| 1230
0| 1| 1| 1| 1530| 1485| 1460| 1425| 1380| 1350| 1310| 1280
1| 1| 1| 1| 1530| 1490| 1465| 1425| 1390| 1350| 1310| 1285

B6EM

C-CABINET

| SWITCH SETTINGS 0 = OFF, 1 = ON| COOLING OR HEATING AIRFLOW (CFM)
DRY COIL ESP
1/5| 2/6| 3/7| 4/8| 0.1| 0.2| 0.3| 0.4| 0.5| 0.6| 0.7| 0.8
0| 0| 0| 0| 710| 580| 395| —| —| —| —| —
1| 0| 0| 0| 830| 690| 675| 530| 505| —| —| —
0| 1| 0| 0| 930| 875| 710| 665| 560| 530| —| —
1| 1| 0| 0| 1065| 1015| 900| 840| 800| 705| 665| 635
0| 0| 1| 0| 1185| 1115| 1010| 960| 925| 875| 830| 745
1| 0| 1| 0| 1275| 1220| 1175| 1120| 1060| 970| 930| 890
0| 1| 1| 0| 1365| 1350| 1255| 1200| 1150| 1105| 1060| 1025
1| 1| 1| 0| 1480| 1430| 1370| 1325| 1265| 1225| 1185| 1140
0| 0| 0| 1| 1560| 1535| 1485| 1430| 1375| 1335| 1285| 1240
1| 0| 0| 1| 1650| 1600| 1545| 1500| 1450| 1405| 1360| 1305
0| 1| 0| 1| 1730| 1685| 1660| 1610| 1570| 1520| 1470| 1420
1| 1| 0| 1| 1785| 1740| 1695| 1645| 1615| 1545| 1510| 1470
0| 0| 1| 1| 1865| 1820| 1785| 1750| 1695| 1655| 1605| 1560
1| 0| 1| 1| 1920| 1890| 1850| 1805| 1765| 1715| 1675| 1640
0| 1| 1| 1| 2010| 1965| 1960| 1900| 1850| 1810| 1775| 1730
1| 1| 1| 1| 2065| 2020| 1985| 1955| 1915| 1880| 1840| 1810

WIRING DIAGRAM

Air Handler with Fixed Speed High Efficiency Motor

NOTES:

1. The blower motor speed tap connection may not be as shown. See the Installation Instructions.
2. Disconnect all power before servicing.
3. Transformer may have a dual voltage primary tap. Match the tap position with the supply voltage used.
4. If the internal wiring is replaced,use only 105°C copper wire of the same gauge.

1014903A
(Replaces 10149030)

LEGEND

Specifications & illustrations subject to change without notice or incurring obligations (02/19).
O’Fallon, MO, © Nortek Global HVAC LLC 2019. All Rights Reserved.

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