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IMPORTANT SAFETY INFORMATION

INSTALLER: Please read all instructions before servicing 

this equipment. Pay attention to all safety warnings and 

any other special notes highlighted in the manual. Safety 

markings are used frequently throughout this manual to 

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:

ELECTRICAL SHOCK, FIRE OR

EXPLOSION HAZARD

Failure to follow safety warnings exactly could 

result in serious injury or property damage.
Improper servicing could result in dangerous 

operation, serious injury, death or property 

damage.
Before servicing, disconnect all electrical 

power to furnace.
• Before servicing, disconnect all electrical 

power to the air handler.

•  When servicing controls, label all wires prior 

to disconnecting. Reconnect wires correctly.

•  Verify proper operation after servicing.

 WARNING:

NITROGEN

HEALTH

FLAMMABILITY

REACTIVITY

0 Minimal Hazard

1 Slight Hazard

1

0

0

B64EM & B64VM air handlers leave the factory 

with a nitrogen holding charge. Use caution 

when preparing coils for field connections. 

If repairs make it necessary for evacuation 

and charging, it should only be attempted 

by qualified, trained personnel thoroughly 

familiar with this equipment. Some local codes 

require licensed installation service personnel 

to service this type of equipment. Under no 

circumstances should the equipment owner 

attempt to install and/or service this equipment. 

Failure to comply with this warning could result 

in equipment damage, personal injury, or death.

REQUIREMENTS & CODES

 WARNING:

This unit must be installed in accordance 

with instructions outlined in this manual 

during the installation, service, and operation 

of this unit. Unqualified individuals should 

not attempt to interpret these instructions or 

install this equipment. Failure to follow safety 

recommendations could result in possible 

damage to the equipment, serious personal 

injury or death.

• The installer must comply with all local codes and 

regulations which govern the installation of this type of 

equipment. Local codes and regulations take precedence 

over any recommendations contained in these instructions. 

Consult local building codes for special installation 

requirements.

• This equipment contains nitrogen gas. Installation or 

servicing should only be performed by qualified trained 

personnel thoroughly familiar with this type equipment.

•  All electrical wiring must be completed in accordance with 

local, state and national codes and regulations and with 

the National Electric Code (ANSI/NFPA 70) or in Canada 

the Canadian Electric Code Part 1 CSA C.22.1.

•  Installation of equipment may require brazing operations. 

Installer must comply with safety codes and wear 

appropriate safety equipment (safety glasses, work gloves, 

fire extinguisher, etc.) when performing brazing operations.

•  Install this unit only in a location and position as specified 

on 

page 4

 

page 5

This unit is designed only for Indoor 

installations and should be located with consideration 

of minimizing the length of the supply and return ducts. 

See 

Table 6, (page 16)

Table 7, (page 17)

Table 8, 

  (page 18)

Table 9, (pages 19 and 20)

 and the rating 

plate for proper circulating airflow data.

• Follow all precautions in the literature, on tags, and on 

labels provided with the equipment. Read and thoroughly 

understand the instructions provided with the equipment 

prior to performing the installation and operational 

checkout of the equipment.

• Air handler installations in a residential garage must be 

installed as specified on 

page 4

.

•  This air handler may not be used for temporary heating 

or cooling of buildings or structures under construction. 

Operating the air handler during construction is not 

permitted and will void the manufacturer’s warranty.

Summary of Contents for B64EM Series

Page 1: ...well Pay attention to all safety warnings and any other special notes highlighted in the manual Improper installation of the furnace or failure to follow safety warnings could result in serious injury...

Page 2: ...wer Continuously 11 Selecting Continuous Low Speed Fan Operation 11 Turning the Blower Off 11 System Cooling 11 System Heating 11 Selecting Minimum Electric Heat Airflow 11 Blower Configurations 11 De...

Page 3: ...ation service and operation of this unit Unqualified individuals should not attempt to interpret these instructions or install this equipment Failure to follow safety recommendations could result in p...

Page 4: ...ment Refer to applicable building codes for details Static pressure drop through louvered openings and through return air plenums should be considered in the overallductdesigninthedeterminationoftheto...

Page 5: ...needed gaskets and grommets around penetrations into the air handler such as for electrical wiring AIR HANDLER INSTALLATION B64 series air handlers are shipped ready for vertical upflow installation a...

Page 6: ...Right Installations 1 Remove the coil access door Unscrew the line set tube close off plate from the front left cabinet rail 2 Slide the coil and drain pan assembly out of the unit 3 Remove the sheet...

Page 7: ...ntact with valve when gas is escaping Always ensure adequate ventilation is present during the depressurization process Address any uncertainties before proceeding Failure to comply with this warning...

Page 8: ...ondensables to prevent low efficiency operation or damage to the unit The suggested range of evacuation is 350 500 microns 9 Charge the system with refrigerant Refer to the outdoor unitinstallationman...

Page 9: ...ation service and operation of this unit Unqualified individuals should not attempt to interpret these instructions or install this equipment Failure to follow safety recommendations could result in p...

Page 10: ...5 Connect blue blower limit wires according to Heater Kit Installation Instructions and the corresponding Wiring Diagram If a heater kit is not installed 1 Remove the 2 wire plug of the air handler b...

Page 11: ...n B64EM models B64VM models automatically set the heating speed based on the amount of installed heat The A B switch must be set appropriately for the unit cabinet size For C sized cabinets the A B sw...

Page 12: ...cted airflow while the system is in the lo cool mode and 100 of the selected airflow while in hi cool mode Units with an FSHE control scheme B64EM have a control board that includes a 7 segment displa...

Page 13: ...or on the blower and motor as part of the annual inspection Blower Fan Wheel Inspect the blower wheel blades for accumulations of dirt and clean if necessary Inspect mounting nut for tightness when do...

Page 14: ...typ 13 4 K O typ 1 7 8 3 5 8 5 5 8 DETAIL D 3 1 4 2 1 4 15 1 4 13 SUCTION LIQUID W 1 1 8 1 7 8 7 8 K O H 22 A CABINET SIZE H W A DETAIL D A 43 5 16 14 3 16 12 3 4 No B 43 5 16 19 11 16 18 1 4 No Tall...

Page 15: ...l Drain Pan Coil Assembly Motor Mount Kit Blower Motor Transformer Capacitor Circuit Breaker 60A Heating Element Assembly Filter Tracks Blower Wheel Blower Housing Motor Control Board Filter Door Uppe...

Page 16: ...0 795 720 685 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...

Page 17: ...TON 560 560 1200 3 5 TON 600 600 1250 625 650 2 TON 1300 4 TON 700 2 TON 700 1350 750 750 1400 800 2 5 TON 800 2 5 TON 1450 850 850 1500 875 875 1550 890 950 1600 5 TON 930 1050 3 TON 1650 950 1150 3...

Page 18: ...ING 0 OFF 1 ON AIRFLOW CFM 5 6 7 8 0 0 0 0 1100 0 0 0 1 1200 0 0 1 0 1250 0 0 1 1 1300 0 1 0 0 1350 0 1 0 1 1400 0 1 1 0 1450 0 1 1 1 1500 1 0 0 0 1550 1 0 0 1 1600 1 0 1 0 1650 1 0 1 1 1700 1 1 0 0 1...

Page 19: ...W1 W2 EHEAT ON 5 KW Stage 1 Heat on instantly Heat blower on after 3 second delay 8 KW 10 KW Stage 1 Heat on instantly Heat blower on after 3 second delay Stage 2 Heat on after 5 seconds delay 15 KW...

Page 20: ...fter 5 seconds delay 15 KW Stage 1 Heat on instantly Cool blower on after 3 second delay Stage 2 Heat on after 5 seconds delay Stage 3 Heat on after 30 seconds delay 20 KW Stage 1 Heat on instantly Co...

Page 21: ...cal Heat Pump with 2 Stage Air Handler G R W2 C O Y1 Thermostat O Y1 R C G R W E Thermostat Y1 C Y1 W2 Typical 2 Stage Air Conditioner with 2 Stage Air Handler Typical 2 Stage Heat Pump with 2 Stage A...

Page 22: ...1 BLWDTC BLWDTC_R HEAT COOL EAC L 1 L 2 P2 R C G W Y 3A Fuse HEATER P1 Figure 12 Single Stage Control Board C R G Y2 Y O 1W 2W 1Y L LED 1 HEATER P1 L 2 HUM EAC P2 3A Fuse P3 Figure 13 Two Stage Contro...

Page 23: ...R ECM BLOWER Figure 14 Fixed Speed Motor Control Board GND SENSOR DEHUM Y1 H L2 OUT L2 IN L1 IN L1 OUT Y1 Y Y2 W C EXPANSION PORT R RED GREEN TEST PORT BLOWER MOTOR RED INPUTS COOL HEAT FAN SPEED OUTP...

Page 24: ...entation avant l entretien 3 Le transformateur peut avoir un robinet principal double tension Agencez la position du robinet au type de tension de l installation 4 Si le c blage interne est remplac ut...

Page 25: ...e tension Agencez la position du robinet au type de tension de l installation 4 Si le c blage interne est remplac utilisez seulement un fil de cuivre 105 C du m me gabarit WIRING DIAGRAM CONNECT TO W1...

Page 26: ...tterthanyourcustomer This includes being able to install the product according to strict safety guidelines and instructing the customer on how to operate and maintain the equipment for the life of the...

Page 27: ...27...

Page 28: ...10436960 NEW Specifications illustrations subject to change without notice or incurring obligations 08 22 O Fallon MO Nortek Global HVAC LLC 2022 All Rights Reserved...

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