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Nordyne MB6BM Series, Installation Instructions Manual

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Nordyne MB6BM Series Installation Instructions Manual Download Page 25

25

Motor Settings

WIRING DIA

G

RAM

V

ariab

le Speed 

Air 

Handler

High V

o

ltage

Lo

w V

o

ltage

High V

o

ltage

F

actor

y Wiring

Field Wiring

NO

TES:

1) 

Not suitab

le f

or systems e

x

ceeding120V to g

round 

2) 

If an

y inter

nal wir

ing m

ust be replaced, it m

ust be 

replaced with 105C wire of the same gauge

. 

3) 

When connecting accessor

ies to circuitboard, 

remo

v

e

 the jumper supplied with the unit.

 

4)

F

or A/C applications

, connect "O" to "Y".

1

2

3

5

4

GREEN

W2

W1

O

Y/Y2

G

R

C

24VA

C

COM

TRANSFORMER

PO

WER SUPPL

Y

CUT WIRES 

T

O

REMO

VE PLUG HOUSING

WHEN HEA

TER KIT IS

NO

T INST

ALLED 

24V

WHITE

BLA

C

K

GREY

BLA

C

K

WHITE

MO

T

O

R

1

2

3

5

4

6

7

8

9

10

11

12

13

14

15

16

1

2

3

5

4

6

7

8

9

10

11

12

13

14

15

16

1

2

3

5

4

6

7

8

9

10

11

12

13

14

15

16

ORANGE

WHITE

GREY

RED

GREEN

WIRE

HARNESS

240/208

BLO

W

ER BO

ARD

CONTR

OL BO

ARD

FUSE

1

2

3

5

4

6

7

8

9

10

11

12

13

14

15

16

GC

O

HUM

Y1

WR

HUM

Y/Y2

L2 COM 2

L2

L2COM

L1

VS POWER

XFMR

COOL

HEA T

Y1

HEA

T

ER PLUG

P3

12

3

4

5

6

78

YELLO

W

BLUE

RED

JUMPER

SELECT

O

R SWITCHES

NO

TE:

 1 = ON 

 

0 = OFF

710544D

(Replaces 710544C)

¢710544¬¤

CFM

Switch

 Number

A-Cabinet

B-Cabinet

C-Cabinet

123

4

540

720

1075

000

1

600

800

1225

000

0

660

880

1380

001

0

715

850

1135

100

1

790

945

1295

100

0

870

1040

1460

101

0

915

1085

1525

010

1

955

1140

1625

110

1

1015

1205

1740

010

0

1060

1325

1960

011

0

1075

1265

1860

110

0

1165

1390

2090

111

0

Nom.

 

KW

CFM

Switch

Number

A-Cabinet

B-Cabinet

C-Cabinet

56

0-5

700

700

-

00

0-9

-

-

700

00

6-9

800

-

-

10

6-10

-

800

-

10

10-14

950

-

-

01

10-14

-

-

950

10

11-15

-

950

-

01

15

1100

-

-

11

15-20

-

-

1100

01

16-20

-

1100

-

11

21-30

-

-

1500

11

Minim

um Electric Heat Air

-Flo

w

Dela

y

Desc

Switch

Number

78

Dela

y

 A

00

Dela

y

 B

01

No Dela

y

10

De-Hum

11

Dela

y

 Settings

(all models)

(Modular blower supports 20kW heat max.)

Figure 14. Wiring Diagram for MB6VM Series Indoor Blower

Summary of Contents for MB6BM Series

Page 1: ...nnel for this type of equipment Improper installation service adjustment or maintenance may cause explosion fire electrical shock or other hazardous conditions which may result in personal injury or property damage Unless otherwise noted in these instructions only factory authorized kits or accessories may be used with this product Keep this manual where you have easy access to it in the future If...

Page 2: ...or state codes Always consult with local authorities before installing any gas appliance Duct Systems USandCANADA AirConditioningContractorsAssociation ACCA Manual D Sheet Metal and Air Conditioning ContractorsNationalAssociation SMACNA orAmerican Society of Heating Refrigeration and Air Conditioning Engineers ASHRAE Fundamentals Handbook Electrical Connections US National Electrical Code NEC ANSI...

Page 3: ...ntainers paper bags or other paper products gasoline kerosene cigarette lighter fluid dry cleaning fluids paint thinners or other volatile fluids 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 instal...

Page 4: ...vice access and noise The dimensions of the room or alcove must be able to accommodate the overall size of the unit and the installation clearances listed in Table 1 Physical dimensions for this indoor blower are shown in Figure 7 page 16 The indoor blower should be installed before routing the refrigerant tubing Minimum Clearances This appliance must be installed in accordance with clearances lis...

Page 5: ...ition the duct on top of the cased coil and secure together with sheet metal screws Acoustical Duct Work Certain installations may require the use of acoustical lining inside the supply duct work Acoustical insulation must be in accordance with the current revision of the Sheet Metal and Air Conditioning Contractors National Association SMACNA application standard for duct liners DuctliningmustbeU...

Page 6: ...wheredamagemayresultfromcondensateoverflow an auxiliary drain pan should be installed under the unit A separate drain line should extend from the pan to a conspicuous point and serve as an alarm indicating that the primary drain is restricted As an alternative to a separate drain line an approved water level indicator or float switch device should be used to shut down the unit in the event water i...

Page 7: ...and back of the units with the 1 2 insulation facing the rear gap between the units 7 Secure the rear bracket with self tapping screws Downflow Installation The MB6 Series Modular Air Handler may be installed in a downflow configuration as shown in Figure 1 Return air must enter through the top of the unit 1 Remove the lower front bracket Figure 9 page 17 from the modular unit Retain the screws fo...

Page 8: ...ng bracket to the backside of the modular unit Position the bracket so that it is flush with the sides and back of the units with the 1 2 insulation facing the rear gap between the units 8 Secure the rear bracket to the modular unit and cased coil with self tapping screws Horizontal Installation MB6 indoor blowers are shipped from the factory ready for horizontal left applications and horizontal r...

Page 9: ...he unit wiring label or Figures 12 14 Use only copper wire for the line voltage power supply to this unit Use proper code agency listed conduit and a conduit connector for connecting the supply wires to the unit Aluminum supply wire may be used if a heater kit is installed If replacing any of the original wires supplied with the unit thereplacementwiremustbecopperwireconsisting of the same gauge a...

Page 10: ...t be twinned Heater Kits Field installedelectricheaterkitsareavailable Instructions for installing the electric heaters are included with the heaters See heater kit information can be found in the Technical Specifications Indoor blowers set up with 15 kw or more of electric heat willnormallybeconfiguredformultiple circuitpowersupply Theymay however beconnectedtoasingle circuitpower supply with the...

Page 11: ...kit installed If Electric heat is desired the H6HK heater kit may be purchased separately and fieldinstalled Determinethecorrectsizeheaterkitforyour unit by referring to the list below or the units rating label A Size Cabinet 15Kw max B Size Cabinet 20Kw max C Size Cabinet 20Kw max 1 Connect the 2 wire plug of the indoor blower to the mating 2 wire plug of the heater kit 2 Connect the line voltage...

Page 12: ...r Handler Typical 2 Stage Cooling Heat Pump with Optional Outdoor Thermostat Variable Speed Air Handler W2 W1 O Y Y2 G R C W2 W1 O Y Y2 G R C Y2 Y2 Y2 Y2 W1 W3 R Y1 Y1 Y1 Y1 Y1 Y1 Air Conditioner Air Handler NOTE Jumper W1 W2 together for shorter staging time NOTE Jumper W1 W2 together for shorter staging time NOTE For AC applications the O Y connection must be connected as shown Air Conditioner A...

Page 13: ...k condensate drain line s for proper drainage Verify the surrounding area and top of the unit is free from obstructions and debris Check all duct connections Make sure the duct work is adequately sealed to prevent air leakage Check all coil connections for leaks Verify that the line voltage power leads are securely connected and the unit is properly grounded Make sure all doors are installed befor...

Page 14: ...so that the DHUM output should be high positive when dehumidification is needed See also Optional Humidistat section on page 11 IMPORTANT If coil icing is observed the basic cooling heat pump airflow selected may be too low Verify the setting selected is within the range shown in Table and thatthethesystemisproperlycharged Pleaserefertothe instructionssuppliedwiththeoutdoorunit Ificingcontinues to...

Page 15: ...season It is recommended that the filter be cleaned or replaced monthly Newly built or recently renovated homes may require more frequent changing untiltheconstructiondusthasminimized Filtersdesigned to remove smaller particles such as pollen may require additional maintenance Blower Compartment Dirt and lint can create excessive loads on the motor resulting in higher than normal operating tempera...

Page 16: ...sion B Dimension C A 12 3 4 24 3 4 14 1 4 B 12 3 4 24 3 4 17 1 2 C 18 1 4 27 1 2 21 B A 12 7 8 3 4 TYP 1 3 4 Ø 1 7 8 K O 3 1 4 1 1 4 C 22 1 1 7 8 3 1 2 5 1 2 2 5 8 Ø1 1 8 K O TYP 1 1 4 2 7 8 TOP VIEW Ø 7 8 K O 1 7 8 Ø1 1 8 K O Ø1 3 4 K O 3 4 TYP FRONT VIEW LEFT SIDE RIGHT SIDE BOTTOM VIEW ...

Page 17: ...otor Mount Kit Blower Motor Blower Wheel Blower Housing Transformer Control Board Coil Assembly Outlet Heater Box Lower Front Bracket Blower Door Motor Control Board Rear Bracket Front Joining Bracket Figure 8 MB6 Series Components ...

Page 18: ...910 845 780 705 610 530 Corrected ESP1 0 08 0 19 0 31 0 42 0 54 0 65 0 76 Med 1335 1290 1235 1175 1100 1015 925 805 Corrected ESP1 0 10 0 22 0 34 0 46 0 59 0 71 High 1470 1425 1360 1300 1225 1135 1050 920 Corrected ESP1 0 08 0 22 0 37 0 51 0 65 1600 C Cabinet Low 1035 1005 970 925 875 825 770 710 Corrected ESP1 0 11 0 22 0 33 0 44 0 54 0 65 0 76 Med 1635 1595 1525 1475 1405 1305 1210 1060 Correcte...

Page 19: ... 75 Tap 2 1099 1014 935 864 800 743 693 650 Corrected ESP1 0 11 0 24 0 36 0 48 0 60 0 71 Tap 3 1318 1277 1234 1187 1139 1087 1033 976 Corrected ESP1 0 06 0 18 0 30 0 41 0 53 0 65 Tap 4 1502 1466 1428 1388 1345 1299 1251 1201 Corrected ESP1 0 10 0 21 0 33 0 45 0 57 Tap 5 1624 1592 1557 1520 1480 1438 1393 1346 Corrected ESP1 0 04 0 15 0 27 0 39 0 51 2000 C Cabinet Tap 1 1273 1211 1150 1089 1028 968...

Page 20: ...0 1740 0 1 0 0 1060 0 1 1 0 1265 1 1 0 0 1860 1 1 0 0 1075 1 1 0 0 1325 0 1 1 0 1960 0 1 1 0 1165 1 1 1 0 1390 1 1 1 0 2090 1 1 1 0 Table 6 Air Flow Selection for MB6VM Variable Speed Models A CABINET Nominal KW CFM Switch Number 1 2 3 4 5 6 7 8 0 5 700 0 0 6 9 800 1 0 10 14 950 0 1 15 1100 1 1 B CABINET Nominal KW CFM Switch Number 1 2 3 4 5 6 7 8 0 5 700 0 0 6 10 800 1 0 11 15 950 0 1 16 20 110 ...

Page 21: ...MR VSPOWER L1 L2COM L2 L2COM2 24VAC COM P2 V S CONNECTOR P3 C R G Y Y2 O W1 W2 Y1 24VAC COM FUSE P2 P3 X13 COM X13 HEAT X13 COOL XFMR L1 VSPOWER L1 L2COM L2 L2 Figure 9 MB6BM MB6VM Control Board Figure 10 MB6EM Control Board ELECTRICAL DIAGRAMS ...

Page 22: ...22 1 P1 2 3 4 5 6 7 8 ON ON ON ON ON ON ON ON C R G Y Y2 O HUM W Y1 HUM Figure 11 Variable Speed Motor Control Board ...

Page 23: ...24 VAC RED COM GREY P3 HEATER KIT PLUG Y1 7105381 710538A Air Handler 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 WIRING...

Page 24: ... IS NOT INSTALLED WIRING DIAGRAM 710545B Replaces 710545A 0310 FIELD WIRING LEGEND LOW VOLTAGE HIGH VOLTAGE The blower motor speed tap connection may not be as shown See the Installation Instructions Disconnect all power before servicing Transformer may have a dual voltage primary tap Match the tap position with the supply voltage used If the internal wiring is replaced use only 105 C copper wire ...

Page 25: ...5 4 6 7 8 9 10 11 12 13 14 15 16 G C O HUM Y1 W R HUM Y Y2 L2 COM 2 L2 L2COM L1 VS POWER XFMR COOL HEAT Y1 HEATER PLUG P3 1 2 3 4 5 6 7 8 YELLOW BLUE RED JUMPER SELECTOR SWITCHES NOTE 1 ON 0 OFF 710544D Replaces 710544C 710544 CFM Switch Number A Cabinet B Cabinet C Cabinet 1 2 3 4 540 720 1075 0 0 0 1 600 800 1225 0 0 0 0 660 880 1380 0 0 1 0 715 850 1135 1 0 0 1 790 945 1295 1 0 0 0 870 1040 146...

Page 26: ...26 ...

Page 27: ...27 ...

Page 28: ...stqualifiedindividuals experienced in the proper installation of this appliance Some local codes require licensed installation service personnel for this type of equipment Please read all instructions carefully before starting the installation Return these instructions to the customer s package for future reference ELECTRICAL SYSTEM Electrical connections tight YES NO Line voltage polarity correct...

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