Bard Q48A1, Q60A1, Q36A1, Q42A1, Q30A1, Q24A1 User Manual

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Q-TEC SERIES

PACKAGED

INSTALLATION

AIR CONDITIONER

INSTRUCTIONS

 

Models:

 

 

 

 

 

Q24A1

Q30A1

 

 

Q36A1

Q42A1

 

 

Q48A1

Q60A1

 

 

 

 

Bard Manufacturing Company, Inc.

Manual:

2100-522B

Bryan, Ohio 43506

Supersedes:

2100-522A

 

File:

Vol II

Tab 14

Since 1914 . . . Moving ahead, just as planned.

Date:

12-15-11

 

 

 

 

 

 

Manual

2100-522B

 

 

Page

1 of 38

CONTENTS

Getting Other Information and Publications

 

For more information, contact these publishers: ..........

3

Q-TEC General Information

 

 

Q-TEC Model Nomenclature .........................................

 

4

Shipping Damage .........................................................

 

8

Unit Removal From Skid ..............................................

 

8

Handling Unit After Removal From Skid

.......................

9

General.........................................................................

 

 

9

Minimum Installation Height .........................................

 

9

Duct Work ..................................................................

 

11

Filters

..........................................................................

 

 

11

Fresh Air Intake ..........................................................

 

12

Service Light...............................................................

 

12

Condensate ......................................................Drain

 

12

Optional ..............................................Rear Drain Kit

 

12

Separate .....................Evaporator Drain Connection

 

12

Installation Instructions

 

 

Mounting .......................................................the Unit

 

19

Wiring .................................................— Main Power

 

20

Wiring .....................................— Low Voltage Wiring

 

20

Low Voltage ...........................................Connections

 

21

General.......................................................................

 

 

21

Figures

 

 

 

 

Figure ..........................................1

Unit Dimensions

 

7

Figure ......................................2

Air Seal Under Unit

 

8

Figure .........................3

Removal of Unit From Skid

 

8

Figure ...............4 Unit on Appliance Cart for Moving

9

Figure ..........5

Installation With Free Blow Plenum

10

Figure .....................................6

Ducted Application

 

10

Figure ..........................7

Supply Duct Connections

 

11

Figure ............................................8

Filter Location

 

11

Figure ...................................9

Optional Side Drain

 

13

Figure ..................................10

Standard Rear Drain

 

13

Figure ...............................11

Rear Drain (Top View)

 

13

Figure 12A .............................

Optional Rear Drain Kit

 

14

Figure 12B .............................

Optional Rear Drain Kit

 

15

Figure 12C .............................

Optional Rear Drain Kit

 

16

Figure 12D .............................

Optional Rear Drain Kit

 

17

Figure 13A ............................................

Unit Mounting

 

18

Figure 13B ............................................

Unit Mounting

 

18

Figure ...14

Removing Locking Screws from Wheels

19

Figure .................................15

Component Location

 

20

Figure ........................16 Thermostat Plug Terminals

 

22

Figure ....17

Thermostat Wiring Diagram

"X" Option

23

Figure ....18

Thermostat Wiring Diagram

"A" Option

24

Figure ...19

Thermostat Wiring Diagram

"D" Option

25

Figure ...20

Thermostat Wiring Diagram

"H" Option

26

Figure .......................21 Fresh Air Damper Removal

 

32

Figure .........................................22

QERV Removal

 

33

Figure ...........................................23

CO2 Controller

 

34

Figure .................................24

Control Disassembly

 

36

Figure ..............................................25

Winding Test

 

36

Figure ...................................................26

Drip Loop

 

36

Figure ......................................27

Fan Blade Setting

 

37

Manual

2100 - 522B

 

 

Page

2 of 38

 

 

Start Up

 

 

R-410A Refrgerant .........................................................

27

Topping Off System Charge ...........................................

27

Safety Practices .............................................................

27

Description of Standard Equipment ...............................

28

Optional CFM (Q36A1, Q42A1, Q48A1 & Q60A1 Only) 28

Important Installer Note..................................................

28

Phase Monitor ................................................................

28

Three Phase Scroll Compressor Start Up

 

Information .......................................................

28 & 29

Compressor Control Module ..........................................

29

Adjustments ...................................................................

29

Service Hints .........................................................

29 & 30

Mist Eliminator Service ..................................................

30

Vent Options .........................................................

30 & 31

Sequence of Operation ..................................................

34

Optional Climate Controls Sequence

 

of Operation ..............................................................

34

Pressure Service Ports ..................................................

34

Troubleshooting

 

Troubleshooting GE ECM™ Blower Motors.............

35-36

Fan Blade Setting Dimensions ......................................

37

Refrigerant Charge ........................................................

37

Pressure Chart ...............................................................

38

Tables

 

 

Table 1 Factory Built-In Electric Heat Table ..............

5

Table 2

Electrical Specifications ................................

6

Table 3 Operating Voltage Range ...........................

20

Table 4

Wall Thermostats ........................................

22

Table 5

Fan Blade Dimensions ...............................

37

Table 6 Indoor Blower Performance ........................

37

Table 7

Cooling Pressure ........................................

38

GETTING OTHER INFORMATION AND PUBLICATIONS

These publications can help you install the air conditioner or heat pump. You can usually find these at your local library or purchase them directly from the publisher. Be sure to consult current edition of each standard.

National Electrical Code .....................

ANSI/NFPA 70

Standard for the Installation .............

ANSI/NFPA 90A

of Air Conditioning and Ventilating Systems

Standard for Warm Air ......................

ANSI/NFPA 90B

Heating and Air Conditioning Systems

Load Calculation for .......................

ACCA Manual J or

Winter and Summer

Manual N

Air Conditioning

 

Low Pressure, Low Velocity ........

ACCA Manual D or

Duct System Design

Manual Q

Winter and Summer Air Conditioning

FOR MORE INFORMATION, CONTACT THESE PUBLISHERS:

ACCA

Air Conditioning Contractors of America

 

1712 New Hampshire Avenue

 

Washington, DC 20009

 

Telephone: (202) 483-9370

 

Fax: (202) 234-4721

ANSI

American National Standards Institute

 

11 West Street, 13th Floor

 

New York, NY 10036

 

Telephone: (212) 642-4900

 

Fax: (212) 302-1286

ASHRAE American Society of Heating, Refrigeration,

and Air Conditioning Engineers, Inc.

1791 Tullie Circle, N.E.

Atlanta, GA 30329-2305

Telephone: (404) 636-8400

Fax: (404) 321-5478

NFPA

National Fire Protection Association

 

Batterymarch Park

 

P.O. Box 9101

 

Quincy, MA 02269-9901

 

Telephone: (800) 344-3555

 

Fax: (617) 984-7057

Manual

2100-522B

Page

3 of 38

Q-TEC Series General Information

Q-TEC MODEL NOMENCLATURE

Q 42 A 1

MODEL NUMBER

Q-Tec™

CAPACITY

24 - 2 Ton

30 - 2½ Ton

36 - 3 Ton

42 - 3½ Ton

48 - 4 Ton

60 - 5 Ton

AIR

CONDITIONER

REVISION |

SPECIALTY PRODUCTS 1 |

(Non-Standard)

VOLTS & PHASE |

A - 230/208/60/1

B - 230/208/60/3

C - 460/60/3

A10

KW

0Z - 0KW

05 - 5KW

06 - 6KW

09 - 9KW

10 -10KW

12 -12KW

15 -15KW

VENTILATION OPTIONS

X - Barometric Fresh Air Damper (Standard) B - Blank-off Plate

E - Economizer (Not available on dehumidification versions)

P - Commercial Ventilator - Motorized w/Exhaust Power Return V - Commercial Ventilator - Motorized w/Exhaust Spring Return

R - Energy Recovery Ventilator w/Independent Intake & Exhaust Control

X

 

 

X

V

 

 

 

X

X

 

X

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FILTER OPTIONS

 

 

 

 

 

 

 

 

 

 

 

X - 1 inch Fiberglass

 

 

 

 

COIL OPTIONS

 

INTERNAL

 

(Standard)

 

 

 

 

X -Standard

 

 

 

 

 

 

 

CONTROLS

F - 2 inch Fiberglass

 

 

 

 

1 -Phenolic coated

 

 

 

 

 

 

X - Standard

P - 2 inch Pleated

 

 

 

 

 

evaporator*

 

 

 

 

 

 

 

 

• High Pressure

 

 

 

 

 

 

 

 

 

 

2 -Phenolic coated

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Switch

 

 

 

 

 

 

 

 

 

 

 

condenser

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

• Low Pressure

 

 

 

 

 

 

 

 

 

 

3 -Phenolic coated

 

 

 

 

 

 

COLOR

 

 

 

 

 

Switch

 

 

 

 

 

 

 

 

evaporator and

 

 

 

 

 

 

V - Platinum w/Slate

 

 

 

 

 

• Compressor

 

 

 

 

 

 

 

condenser coil*

 

 

 

 

 

 

Front (Vinyl)

 

 

 

 

 

 

Control Module

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

X - Beige paint

 

 

 

 

*and reheat if

 

 

w/Time Delay

 

 

 

 

4 - Gray paint

 

 

 

 

 

J

- Alarm Relay +

 

 

 

 

 

 

 

 

applicable

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LAC + Above

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CLIMATE CONTROL2

 

 

 

 

 

 

STANDARD UNITS

 

DEHUMIDIFICATION UNITS

 

 

 

 

X

- None 2

 

X - None 2

 

 

 

 

 

 

A

-

Electronic/Non Prog

 

E

-

Electronic/Prog/Humidistat

 

 

 

 

D

-

Electronic/Prog

 

G

-

Electronic Non-Prog/Humidistat

 

H

-

Electronic/Prog/CO2

 

I

-

Electronic Prog/Humidistat/CO2

NOTE: 1 Insert “D” for dehumidification with hot gas reheat. Reference 7960-584 for complete details.

2 If “X” control option is selected, then thermostat and humidistat, if applicable, or DDC control system must be field supplied.

Manual

2100-522B

Page

4 of 38

TABLE 1

FACTORY BUILT-IN ELECTRIC HEAT TABLE

 

 

 

 

 

 

 

 

 

Q36A1-A

Q36A1-B

Q36A1-C

 

 

 

 

 

 

Q24A1-A

 

 

 

 

 

 

Q42A1-A

Q42A1-B

Q42A1-C

 

 

 

 

 

Models

Q30A1-A

Q24A1-B

Q30A1-B

Q24A1-C

Q30A1-C

Q48A1-A

Q48A1-B

Q48A1-C

Q60A1-A

Q60A1-B

Q60A1-C

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

240V-1

208V-1

240V-1

208V-1

240V-1

208V-1

480V-3

480V-3

240V-1

208V-1

240V-1

208V-1

480V-3

240V-1

208V-1

240V-1

208V-1

480V-3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

KW

BTUH

BTUH

BTUH

BTUH

BTUH

BTUH

BTUH

BTUH

BTUH

BTUH

BTUH

BTUH

BTUH

BTUH

BTUH

BTUH

BTUH

BTUH

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5.0

16,380

12,290

 

 

 

 

 

 

16,380

12,290

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

6.0

 

 

20,500

15,360

20,500

15,360

20,500

20,500

 

 

20,500

15,360

20,500

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

9.0

 

 

30,700

23,000

30,700

23,000

30,700

30,700

 

 

30,700

23,000

30,700

 

 

30,700

23,000

30,700

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

10.0

32,670

24,570

 

 

 

 

 

 

32,670

24,570

 

 

 

32,670

24,570

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

12.0

 

 

 

 

41,000

30,700

 

41,000

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

15.0

 

 

 

 

 

 

 

 

49,150

36,860

49,150

36,860

49,150

49,150

36,860

49,150

36,860

49,150

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Page

Manual

38 of 5

522B-2100

TABLE 2

ELECTRICALSPECIFICATIONS

 

 

 

 

Single Circuit

 

 

 

 

 

Dual Circuit

 

 

 

 

Rated

No. Field

3 Minimum

1 Maximum

2 Field

 

3 Minimum

1 Maximum

2 Field

2 Ground

 

2 Ground

Circuit

External Fuse

Power

Model

Volts

Power

Circuit

External Fuse

Power

Wire Size

Wire

Ampacity

or Ckt. Breaker

Wire Size

 

and Phase

Circuits

Ampacity

or Ckt. Brkr.

Wire Size

 

 

 

 

Ckt. A

Ckt. B

Ckt. A

Ckt. B

Ckt. A

Ckt. B

Ckt. A

Ckt. B

 

 

 

 

 

 

 

Q24A1-A0Z

 

1

22

30

10

10

-

-

-

-

-

-

-

-

A05

230/208-1

1

30

30

10

10

-

-

-

-

-

-

-

-

A10

 

1

55

60

6

10

-

-

-

-

-

-

-

-

Q24A1-B0Z

 

1

17

20

12

12

-

-

-

-

-

-

-

-

B06

230/208-3

1

25

25

10

10

-

-

-

-

-

-

-

-

B09

 

1

33

35

8

10

-

-

-

-

-

-

-

-

Q24A1-C0Z

 

1

10

15

14

14

-

-

-

-

-

-

-

-

C06

460-3

1

12

15

14

14

-

-

-

-

-

-

-

-

C09

 

1

17

20

12

12

-

-

-

-

-

-

-

-

Q30A1-A0Z

 

1

25

35

8

10

-

-

-

-

-

-

-

-

A05

230/208-1

1

32

35

8

10

-

-

-

-

-

-

-

-

A10

 

1

57

60

6

10

-

-

-

-

-

-

-

-

Q30A1-B0Z

 

1

18

25

10

10

-

-

-

-

-

-

-

-

B06

230/208-3

1

25

25

10

10

-

-

-

-

-

-

-

-

B09

1

34

35

8

10

-

-

-

-

-

-

-

-

 

B12

 

1

43

45

6

10

-

-

-

-

-

-

-

-

Q30A1-C0Z

 

1

11

15

14

14

-

-

-

-

-

-

-

-

C06

460-3

1

14

15

14

14

-

-

-

-

-

-

-

-

C09

 

1

18

20

12

12

-

-

-

-

-

-

-

-

C12

 

1

23

25

10

10

-

-

-

-

-

-

-

-

Q36A1-A0Z

 

1

29

45

8

10

-

-

-

-

-

-

-

-

A05

230/208-1

1

34

45

8

10

-

-

-

-

-

-

-

-

A10

1

58

60

6

8

-

-

-

-

-

-

-

-

 

A15

 

1 or 2

84

90

4

8

58

25

60

25

6

10

10

10

Q36A1-B0Z

 

1

21

30

10

10

-

-

-

-

-

-

-

-

B06

230/208-3

1

26

30

10

10

-

-

-

-

-

-

-

-

B09

1

35

35

8

10

-

-

-

-

-

-

-

-

 

B15

 

1

53

60

6

10

-

-

-

-

-

-

-

-

Q36A1-C0Z

 

1

12

15

14

14

-

-

-

-

-

-

-

-

C06

460-3

1

14

15

14

14

-

-

-

-

-

-

-

-

C09

1

18

20

12

12

-

-

-

-

-

-

-

-

 

C15

 

1

27

30

10

10

-

-

-

-

-

-

-

-

Q42A1-A0Z

 

1

35

50

8

10

-

-

-

-

-

-

-

-

A05

230/208-1

1

35

50

8

10

-

-

-

-

-

-

-

-

A10

1

58

60

6

8

-

-

-

-

-

-

-

-

 

A15

 

1 or 2

83

90

4

8

58

25

60

25

6

10

10

10

Q42A1-B0Z

 

1

26

35

8

10

-

-

-

-

-

-

-

-

B06

230/208-3

1

26

35

8

10

-

-

-

-

-

-

-

-

B09

1

35

35

8

10

-

-

-

-

-

-

-

-

 

B15

 

1

53

60

6

10

-

-

-

-

-

-

-

-

Q42A1-C0Z

 

1

13

15

14

14

-

-

-

-

-

-

-

-

C06

460-3

1

14

15

14

14

-

-

-

-

-

-

-

-

C09

1

18

20

12

12

-

-

-

-

-

-

-

-

 

C15

 

1

27

30

10

10

-

-

-

-

-

-

-

-

Q48A1-A0Z

 

1

37

50

8

10

-

-

-

-

-

-

-

-

A05

230/208-1

1

37

50

8

10

-

-

-

-

-

-

-

-

A10

1

58

60

6

10

-

-

-

-

-

-

-

-

 

A15

 

1 or 2

83

90

4

8

58

25

60

25

8

10

10

10

Q48A1-B0Z

 

1

28

40

8

10

-

-

-

-

-

-

-

-

B06

230/208-3

1

28

40

8

10

-

-

-

-

-

-

-

-

B09

1

35

40

8

10

-

-

-

-

-

-

-

-

 

B15

 

1

53

60

6

10

-

-

-

-

-

-

-

-

Q48A1-C0Z

 

1

14

20

12

12

-

-

-

-

-

-

-

-

C06

460-3

1

14

20

12

12

-

-

-

-

-

-

-

-

C09

1

18

20

12

12

-

-

-

-

-

-

-

-

 

C15

 

1

27

30

10

10

-

-

-

-

-

-

-

-

Q60A1-A0Z

 

1

45

60

8

10

-

-

-

-

-

-

-

-

A10

230/208-1

1

59

60

6

10

-

-

-

-

-

-

-

-

A15

 

1 or 2

84

90

4

8

59

25

60

25

8

10

10

10

Q60A1-B0Z

 

1

31

45

8

10

-

-

-

-

-

-

-

-

B09

230/208-3

1

36

45

8

10

-

-

-

-

-

-

-

-

B15

 

1

55

60

6

10

-

-

-

-

-

-

-

-

Q60A1-C0Z

 

1

16

20

12

12

-

-

-

-

-

-

-

-

C09

460-3

1

19

20

12

12

-

-

-

-

-

-

-

-

C15

 

1

28

30

10

10

-

-

-

-

-

-

-

-

1 Maximum size of the time delay fuse or HACR type circuit breaker for protection of field wiring conductors. 2 Based on 75°C copper wire. All wiring must conform to the National Electrical Code and all local codes.

3 These “Minimum Circuit Ampacity” values are to be used for sizing the field power conductors. Refer to the National Electric Code (latest revision), article 310 for power conductor sizing.

CAUTION: When more than one field power conductor circuit is run through one conduit, the conductors must be derated. Pay special attention to Note 8 of Table 310 regarding Ampacity Adjustment Factors when more than three conductors are in a raceway.

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UNIT DIMENSIONS

FIGURE 1

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SHIPPING DAMAGE

Upon receipt of equipment, the carton should be checked for external signs of shipping damage. The skid must remain attached to the unit until the unit is ready for installation. If damage is found, the receiving party must contact the last carrier immediately, preferably in writing, requesting inspection by the carrier’s agent.

UNIT REMOVAL FROM SKID

WARNING

This unit is heavy and requires more than one person to handle and remove from the skid. Check unit wheels to ensure that wheels are locked before removing from skid. Extreme caution must be taken to prevent injury to personnel and damage to the unit.

It is recommended that the unit not be removed from the skid with a forklift since the air seal under the unit could be damaged. See Figure 2.

The shipping brackets on each side of the unit must be removed and discarded. See Figure 3-A. The return air grille panel can be removed to provide a place to hold

FIGURE 2

AIR SEAL UNDER QTEC UNIT

Air Seal

the unit. The unit can be slid forward on the skid until the front wheels hang over the edge of the skid. See Figure 3-B. The unit can be tipped forward and slid down the edge of the skid until the front wheels touch the ground. See Figure 3-C. The wheels will not roll. They are shipped from the factory locked so they will not roll. The back of the skid will have to be held down to keep it from tipping up. The skid can be slid out from under the unit. The unit can then be set upright.

FIGURE 3

REMOVAL OF UNIT FROM SKID

Hold Skid

Down

A Shipping Brackets

B Front Wheels Over Edge

C Front Wheels On Floor

 

 

 

 

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HANDLING UNIT AFTER REMOVAL FROM SKID

WARNING

Exercise extreme caution when pushing the unit on the rollers. Handle and push from the lower 1/3 of the unit. Insure that debris is not on the floor where the unit is to be moved on the rollers. Failure to do so could result in the unit tipping over and causing bodily injury and/ or damage to the unit.

The unit will have to be turned sideways and removed from the skid to fit through a 36" doorway. If the door height allows, the unit can be slid sideways through the door.

If the unit can not be slid through the door, then the unit will have to be put on a cart and tipped down to roll through the door. It is recommended that an appliance cart by used with a strap to hold the unit on the cart. The wheels of the unit must be locked. If the wheels were allowed to roll, the unit could roll off the cart. The unit should always be carted from the left side. This is the side where the compressor is located. See Figure 4.

The blade of the appliance cart should be slid under the wheels of the unit. The strap of the appliance cart should be placed around the unit and strapped tightly. Help will be required to tip the unit back onto the cart. The unit can be leaned far enough back to be rolled through the door. Be careful when setting the unit back up to keep from damaging the unit.

GENERAL

The equipment covered in this manual is to be installed by trained, experienced service and installation technicians. A QWS-Series wall sleeve supplied as a separate accessory must be ordered and installed with Q-Tec unit.

The unit is designed for use with or without duct work. For use without duct work, Plenum Box QPB42 is recommended.

These instructions explain the recommended method to install the air cooled self-contained unit and the electrical wiring connections to the unit.

These instructions and any instructions packaged with any separate equipment required to make up the entire air conditioning system should be carefully read before beginning the installation. Note particularly “Start Procedure” and any tags and/or labels attached to the equipment.

FIGURE 4

UNIT ON APPLIANCE CART

Q-TEC UNIT

(Right Side)

STRAP

APPLIANCE

CART

COMPRESSOR

While these instructions are intended as a general recommended guide, they do not supersede any national and/or local codes in any way. Authorities having jurisdiction should be consulted before the installation is made. See Page 3 for information on codes and standards.

Size of unit for a proposed installation should be based on heat loss calculation made according to methods of Air Conditioning Contractors of America (ACCA). The air duct should be installed in accordance with the Standards of the National Fire Protection Systems of Other Than Residence Type, NFPA No. 90A, and Residence Type Warm Air Heating and Air Conditioning Systems, NFPA No. 90B. Where local regulations are at a variance with instructions, installer should adhere to local codes.

MINIMUM INSTALLATION HEIGHT

The minimum installation height of the unit with a Free Blow Plenum is 8 ft. 6 in. This provides enough clearance for the plenum to be removed. See Figure 5.

The minimum installation height for ducted applications is 8 ft. 4½ in. This provides enough clearance to install the duct work. See Figure 6.

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FIGURE 5

INSTALLATION WITH FREE BLOW PLENUM

FIGURE 6

DUCTEDAPPLICATION

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DUCT WORK

All duct work must be properly sized for the design airflow requirement of the equipment. Air Conditioning Contractors of America (ACCA) is an excellent guide to proper sizing. All duct work or portions thereof not in the conditioned space should be properly insulated in order to both conserve energy and prevent condensation or moisture damage. When duct runs through unheated spaces, it should be insulated with a minimum of one inch of insulation. Use insulation with a vapor barrier on the outside of the insulation. Flexible joints should be used to connect the duct work to the equipment in order to keep the noise transmission to a minimum.

The Q-TEC series unit has provision to attach a supply air duct to the top of the unit. Duct connection size is 12 inches x 20 inches. The duct work is field supplied and must be attached in a manner to allow for ease of removal when it becomes necessary to slide the unit out from the wall for service. See Figure 7 for suggested attachment method.

The Q-TEC series units are designed for use with free return (non-ducted) and either free blow with the use of QPB Plenum Box or a duct supply air system.

The QPB and QPBHW Plenum Box mounts on top of the unit and has both vertically and horizontally adjustable louvers on the front discharge grille.

For hot water coil option a QPBHWxx-F for free blow or QPBHWxx-D for ducted airflow is used.

FIGURE 7

SUPPLY DUCT CONNECTIONS

SUPPLY DUCT

TO BE FIELD

SUPPLIED

ATTACHMENT

SCREWS TO

BE FIELD

SUPPLIED

ROOM SIDE OF Q-TEC UNIT

DUCT FLANGE

PROVIDED WITH UNIT

NOTE: Unit cabinet, supply air duct and free blow plenum are approved for “0” clearance to combustible material.

When used with a ducted supply, a QCX Cabinet Extension can be used to conceal the duct work above the unit to the ceiling. This extends 20" above the unit for a total height above the floor of 10'-7/8". The unit is equipped with a variable speed indoor blower motor which increases in speed with an increase in duct static pressure. The unit will therefore deliver proper rated airflow up to the maximum ESP shown in Table 7. However, for quiet operation of the air system, the duct static should be kept as low as practical, within the guidelines of good duct design.

FILTERS

Two 1-inch throw away filters [(1) 16x16 and (1) 16x20] are supplied with each unit. The filters slide into filter brackets. Refer to Figure 8.

The filters are serviced from the inside of the building by opening the hinged door. This door is attached by a screw and one locking latch.

The internal filter brackets are adjustable to accommodate 2-inch filters. The tabs for the 1-inch filters must be bent down to allow the 2-inch filters to slide in place.

FIGURE 8

FILTER LOCATION

FILTERS

RETURN AIR

GRILLE

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FRESH AIR INTAKE

This unit is equipped with a fresh air damper assembly. The damper blade is locked in the closed position when the unit is shipped from the factory. To allow the damper to operate remove the two plastic locking pins, one on each end of the blade. This will allow for maximum fresh airflow. The damper blade will now open when the indoor blower is operating. If less than maximum fresh airflow is required, reinsert the plastic pins to limit damper blade opening to desired level. Two extra pins are provided (taped to the inside of the assembly) which may be used to hold the blade in some position other than minimum or maximum position. This fresh air assembly is located in the rear of the unit and to gain access to make these adjustments remove the air filter service door.

All capacity, efficiency and cost of operation information as required for Department of Energy “Energyguide” Fact Sheets are based upon the fresh air blank-off plate in place and is recommended for maximum energy efficiency.

The blank-off plate is available upon request from the factory and is installed in place of the fresh air damper shipped with each unit.

For details on energy recovery ventilation see separate section.

SERVICE LIGHT

The unit is equipped with a service light, which signals the user that service is required. The light is located in the upper control panel and is visible only when the hinged service/filter access door is open.

The Service Unit light indicates that the unit has been shut off by a high or low pressure device. This indicates that the unit needs to be serviced.

CONDENSATE DRAIN

There are two drain connections on the unit. The rear drain is the primary drain, and is located on the right lower rear panel of the unit. The optional side drain is located on the bottom right side of the unit. The side drain is shipped with a plug installed.

The side drain requires a water trap for proper drainage. See Figure 9. The drain can be routed through the floor or through the wall. If the drain is to be routed through an unconditioned space, it must be protected from freezing. The drain line must be able to be removed from the unit if it is necessary to remove the unit from the wall. When the side drain is used, the plug must be removed and installed in the rear drain outlet.

The rear drain can be used with wall thickness of up to 10 inches where a water trap can be installed between the unit and the interior wall. See Figure 10. The trap cannot extend beyond the edge of the unit or it will interfere with the wall mounting bracket. The drain can be routed through the floor or through the wall. If the drain is routed through the wall, the drain line must be positioned such that it will not interfere with the sleeve flange or the grille. See Figure 11. If the drain is to be routed through an unconditioned space, it must be protected from freezing.

OPTIONAL REAR DRAIN KITS

Optional Rear Drain Kit, Bard Model QCDS48A, is also available for these products. The optional rear drain kit offers multiple benefits that include the following:

Allows unit to be rolled away from the sleeve without having to disconnect any hard plumbing connections.

Allows indoor coil condensate to be easily connected to Rear Drain Box while bypassing the outdoor coil drain pan. This aids in minimizing the potential for biological growth to occur by minimizing the standing water and exposing it to warm temperatures.

See Figures 12A, 12B, 12C and 12D.

The drain box permanently mounts onto the wall sleeve and is then either piped directly outdoors, or can be piped vertically. The Q-Tec unit is then equipped with fittings on the rear of the unit that slide into the drain box as it is wheeled towards the wall sleeve.

NOTE: On models equipped with a refrigerant subcooler in the lower drain pan may experience a 2- 3% decrease in cooling performance and efficiency when the indoor condensate is routed around the outdoor coil drain pan/subcooler assembly. Unit rated performance and efficiency are with the indoor condensate routed to the outdoor coil pan.

There is also a heated version of the rear drain box available (Model #QCDS48H) for installation in northern climates where freezing may occur.

SEPARATE EVAPORATOR DRAIN CONNECTION (OPTIONAL)

A knockout is provided in the back right corner of the units for use when draining the evaporator drain pan separately from the condenser. This knockout is 5 inches above the back condenser drain opening. To utilize a separate evaporator drain connection remove the knockout and route the existing evaporator drain hose out this knockout and then to an appropriate drain line.

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FIGURE 9

OPTIONAL SIDE DRAIN (SIDE VIEW) INSTALLATION

Q-TEC UNIT

FIGURE 10

FIGURE 11

STANDARD REAR DRAIN

REAR DRAIN (TOP VIEW)

DRAIN LINE

WALL (MAXIMUM 10" FOR REAR DRAIN)

SLEEVE

COUPLINGS NOT

SHOWN BUT

RECOMMENDED

FOR EASE OF

REMOVABILITY

FOR SERVICE.

WALL

BRACKET

WATER

TRAP

UNIT

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MIS-2469

12A

 

WALL SLEEVE

FIGURE

TUBE

 

OVERFLOW TUBE

CAULK AROUND

DRAIN BOX

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FIGURE 12B

PLUG INSTALLED IN

SIDE Q/Tec DRAIN

REAR DRAIN CONNECTION IN

Q/Tec PRODUCT

 

IMPORTANT !

 

1/2" SLIP X 1/2" SLIP X 3/4" NPT

 

TEE SUPPLIED WITH DRAIN BOX KIT

3/4" PLASTIC PIPE NIPPLE

(TIGHTEN THREADS SO TEE IS

SUPPLIED WITH DRAIN BOX KIT

HORIZONTAL TO FLOOR)

(APPLY TEFLON TAPE TO

 

THREADS)

 

 

MIS-2470

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FIGURE 12C

REMOVE KNOCK-OUT FOR INDOOR DRAIN HOSE CONNECTOR

(If Used)

MIS-2471

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FIGURE 12D

DRAIN HOSE FROM INDOOR

DRAIN PAN.

MOVE HOSE FROM ATTACHMENT IN

LOWER DRAIN PAN AND SLIDE ONTO

DRAIN BOX BARB FITTING, SECURING

WITH SUPPLIED CLAMP IF OUTDOOR

PAN IS BYPASSED. ( WILL REDUCE RISK

OF ALGAE GROWTH IN THE OUTDOOR

PAN BUT AT A SLIGHT COOLING

PERFORMANCE REDUCTION OF 2-3% )

MIS-2472

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FIGURE 13A UNIT MOUNTING

BOTTOM

TRIM PIECE

SIDE TRIM (2 PCS.)

ENLARGED VIEW OF MOUNTING

BRACKET SHOWING SLEEVE TO

CABINET ATTACHMENT

SIDE TRIM

(2 PCS.)

MOUNTING BRACKET

WALL

SLEEVE

#8 SCREW

PROVIDED

(LIGHT COLOR)

MOUNTING

BRACKET

CABINET

SIDE PANEL

#10 HEX

HEAD SCREW

PROVIDED

BOTTOM TRIM

EXTENSION

FIGURE 13B

UNIT MOUNTING

Return Grille

Sleeve

Stud

 

Washer Nut

Condenser

Door (Removed)

MIS-2689

Lower Control Panel

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INSTALLATION INSTRUCTIONS

MOUNTING THE UNIT

When installing a Q-TEC unit near an interior wall on the left side, a minimum of 8 inches is required; 12 inches is preferred.

When installing a Q-TEC unit near an interior wall on the right side, a minimum of 18 inches is required as additional space is required to connect the side drain. If the rear condensate drain kit QCDS48 is used the minimum can be reduced to 8 inches.

This clearance is required to allow for the attachment of the unit to the sleeve and side trim pieces to the wall.

This unit is to be secured to the wall sleeve with mounting brackets provided. The unit itself, the supply duct and the free blow plenum are suitable of “0” clearance to combustible material.

Following are the steps for mounting the Q-TEC. For reference see Figure 13A for external mounting bracket or 13B for internal bolt secured bracket (recommended).

1.Attach mounting brackets to the wall sleeve with screws provided. Either use external mounting bracket (Fig. 13A) or internal bolt bracket (Fig. 13B).

2.Position the unit in front of the sleeve with the condenser section toward the sleeve.

3.Remove the locking screws from the wheels. Refer to Figure 14.

4.Roll the unit into the sleeve. Make sure to check both sides of the unit as it is being rolled to keep it centered in the sleeve. Also check the

alignment to the mounting brackets. This unit must be level from side to side. If adjustments are necessary, shim up under the rollers with sheets of steel or any substance that is not affected by moisture.

5.Make sure the gasket on the rear of the unit is touching the sleeve across the top and down both sides. This is a rain water seal.

6.Secure the mounting brackets to the unit with screws provided, #10 hex head sheet metal screws (Figure 13A) or use nut and washer to secure sleeve (Figure 13B).

7.Bottom trim extensions are provided for use when wall is less than 14 inches but greater than 10.5 inches. Secure to wall with screws (not provided).

8.Attach the bottom trim piece to the unit with the screws provided (dark colored).

9.Position side trim pieces to wall and attach with field supplied screws. There are two long pieces and two short pieces supplied. The long pieces are to enclose the gap behind the unit. The short pieces are to fill the gap behind the cabinet extension or the free blow plenum box. They may be cut to suit your ceiling height or overlap the unit side trim. There is sufficient length to trim up to a 10'2" ceiling.

NOTE: If the exterior wall thickness is between 5 inches to 10.5 inches, a side trim extension piece kit, model QSTX42, is available.

FIGURE 14

REMOVING LOCKING SCREWS FROM WHEELS

REMOVE SCREWS FROM WHEELS

BEFORE ROLLING INTO PLACE

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WIRING – MAIN POWER

Refer to the unit rating plate and/or Table 2 for wire sizing information and maximum fuse or “HACR Type” circuit breaker size. Each unit is marked with a “Minimum Circuit Ampacity”. This means that the field wiring used must be sized to carry that amount of current. Depending on the installed KW of electric heat, there may be two field power circuits required. If this is the case, the unit serial plate will so indicate. All models are suitable only for connection with copper wire. Each unit and/or wiring diagram will be marked “Use Copper Conductors Only”. These instructions MUST BE adhered to. Refer to the National Electrical Code (NEC) for complete current carrying capacity data on the various insulation grades of wiring material. All wiring must conform to NEC and all local codes.

The electrical data lists fuse and wire sizes (75°C copper) for all models, including the most commonly used heater sizes. Also shown are the number of field power circuits required for the various models with heaters.

The unit rating plate lists a “Maximum Time Delay Relay Fuse” or “HACR Type” circuit breaker that is to be used with the equipment. The correct size must be used for proper circuit protection, and also to assure that there will be no nuisance tripping due to the momentary high starting current of the compressor motor.

FIGURE 15

COMPONENTLOCATION

 

SIDE FIELD WIRE

 

ENTRANCE

ELECTRIC

 

HEATERS

 

 

REMOTE

 

THERMOSTAT

UNIT

TERMINAL

BLOCK

MOUNTED

 

THERMOSTAT

INDOOR

LOCATION

BLOWER

 

DEHUMIDIFICATION CONTROL (OPTIONAL)

CIRCUIT BREAKER PANEL & CONTROLS

LOWER

CONTROL

PANEL

The disconnect access door on this unit may be locked to prevent unauthorized access to the disconnect.

See “Start Up” section for information on three phase scroll compressor start-ups.

The field wiring connections are located behind the top and hinged panel in the circuit breaker panel. See Figure 15.

WIRING – LOW VOLTAGE WIRING

230/208V, 1 PHASE AND 3 PHASE EQUIPMENT DUAL PRIMARY VOLTAGE TRANSFORMERS.

All Equipment leaves the factory wired on 240V tap. For 208V operation, reconnect from 240V to 208V tap. The acceptable operating voltage range for the 240 and 208V taps are as noted in Table 3.

TABLE 3

OPERATING VOLTAGE RANGE

TAP

RANGE

 

 

240V

253 – 216

 

 

208V

220 – 187

 

 

NOTE: The voltage should be measured at the field power connection point in the unit and while the unit is operating at full load (maximum amperage operating condition).

The standard Climate Control Option X is a remote thermostat connection terminal block. See Figure 17 for wiring diagram. Compatible thermostats are listed in Table 4.

The Climate Control Option A is an electronic, nonprogrammable manual or auto changeover thermostat. The subbase of the thermostat is factory wired to the front panel of the unit. See Figure 18 for wiring diagram. Compatible for use with Bard CS2000A* Controller and Energy Recovery Ventilator.

The Climate Control Option D is an electronic, programmable thermostat. The subbase of the thermostat is factory wired to the front panel of the unit. See Figure 19 for wiring diagram. Compatible for use with Energy Recovery Ventilator or Economizer.

The Climate Control Option H is an electronic, programmable thermostat and a CO2 controller. The subbase of the thermostat and CO2 controller are factory wired to the front panel of the unit. See Figure 20 for wiring diagram.

NOTE: On option X or A the CS2000A* (or other field provided means to control ventilation) must be used if any of the motorized ventilation options are installed.

NOTE: Thermostats are shipped in the bottom of the unit and must be mounted to the factory mounted subbase at time of installation.

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LOW VOLTAGE CONNECTIONS

These units use a grounded 24 volt AC low voltage circuit.

The “R” terminal is the hot terminal and the “C” terminal is grounded.

“G” terminal or pin 6 of P2 is the fan input. If the climate control option is abandoned and connections are made directly to P2 pin 6 of P2 must be energized for proper operation.

“Y1” terminal or pin 7 of P2 is the compressor input.

“W1” terminal or pin 8 of P2 is the fist stage heat.

“R” terminal or pin 10 of P2 is 24 VAC hot.

“C” terminal or pin 11 of P2 is 24 VAC grounded.

“L” terminal or pin 12 of P2 is compressor lockout output. This terminal is activated on a high or low pressure trip by the electronic heat pump control. This is a 24 VAC output.

“W2” terminal or pin 9 of P2 is second stage heat (if equipped). If the unit is equipped with an optional hot water coil plenum box or electric heat these will be energized by this terminal.

“F” terminal of pin 5 of P2 is the ventilation input. This terminal energizes any factory installed ventilation option.

NOTE: For total and proper control using DDC, a total of 5 controlled outputs are required (4 if no ventilation system is installed).

LOW VOLTAGE CONNECTIONS

FOR DDC CONTROL

Fan Only

Energize G

Cooling Mode

Energize Y1, G

1st Stage Heating

Energize G, W1

2nd State Heating

Energize G, W2

(if employed)

 

Ventilation

Energize G, F

GENERAL

This unit is equipped with a variable speed ECM motor. The motor is designed to maintain rated airflow up to the maximum static allowed. It is important that the blower motor plugs are not plugged in or unplugged while the power is on. Failure to remove power prior to unplugging or plugging in the motor could result in motor failure.

CAUTION

Do not plug in or unplug blower motor connectors while the power is on.

Failure to do so may result in motor failure.

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TABLE 4

 

WALLTHERMOSTATS

 

 

Thermostat

Predominant Features

 

 

 

3 stage Cool; 3 stage Heat

8403-060

Programmable/Non-Programmable Electronic

(1120-445)

HP or Conventional

 

Auto or Manual changeover

 

 

 

2 stage Cool; 2 stage Heat

8403-058

Electronic Non-Programmable

(TH5220D1151)

HP or Conventional

 

Auto or Manual changeover

 

 

8403-056

Carbon Dioxide Sensor with LCD for

(C7232A1008)

Sensor Readings

 

 

FIGURE 16

MIS-1285

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FIGURE 17

 

REMOTE THERMOSTAT WIRING DIAGRAM

 

“X” THERMOSTAT OPTION

 

8403-058

 

LOW VOLTAGE

8403-060

TH5220D1151

TERMINAL BLOCK

G

G

 

G

ORANGE

Y2

Y2

 

Y2

PURPLE

A

 

 

F

BROWN/WHITE

Y1

Y

 

Y1

YELLOW

 

 

 

E

 

W1/E

W

 

W1

BLUE

W2

W2

 

W2

BROWN

R

R

 

R

RED/WHITE

C

C

 

C

BLACK/WHITE

 

Rc

1

1

RED

 

2

 

2

 

 

 

 

 

 

 

3

BLUE

PLUG 2

1

2

3

4

5

6

7

8

9

10

11

12

"X" THERMOSTAT OPTIONS

(FIELD WIRED)

1

REMOVE JUMPER FOR 2 STAGE ELECTRIC HEAT OPERATION

ON 15KW MODELS

 

2 FACTORY INSTALLED JUMPER

MIS-2693

NOTE: On option X or A the CS2000A* (or other field provided means to control ventilation) must be used if any of the motorized ventilation options are installed.

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FIGURE 18

UNIT MOUNTED THERMOSTAT WIRING DIAGRAM

“A” THERMOSTAT OPTION

8403-060

GOrange

Y2 Purple

Brown/White

Y1

Yellow

W1/E

Blue

W2

Brown

RRed/White

C

Black/White

L

Pink

Plug #2

1

2

3

4

5

6

7

8

9

10

11

12

"A" THERMOSTAT OPTION

4102-069

NOTE: On option X or A the CS2000A* (or other field provided means to control ventilation) must be used if any of the motorized ventilation options are installed.

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FIGURE 19

UNIT MOUNTED THERMOSTAT WIRING DIAGRAM

“D” THERMOSTAT OPTION

8403-060

Plug #2

GOrange

 

 

1

 

Purple

2

Y2

3

 

 

 

 

4

ABrown/White

 

 

5

 

 

6

Y1

Yellow

7

 

Blue

W1/E

8

 

 

W2

Brown

9

 

 

RRed/White

10

CBlack/White

11

12 "D" THERMOSTAT OPTION

4102-070

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FIGURE 20

UNIT MOUNTED THERMOSTAT WIRING DIAGRAM “H” THERMOSTAT OPTION WITH CO2

CO2 Controller

Part #8403-056 24VAC

Analog

Out

 

Y2

 

A

 

G

Temp. and Humidity

Y1

Controller

 

Part #8403-060

W1/E

 

W2

 

R

 

C

4102-071

 

Red

Red/White

Black

Black/White

 

 

Yellow

 

 

1

 

 

 

Brown

 

Red/White

3

Black/White

Brown/White

 

Orange

Green

Brown/White

Orange

Brown

Red/White

Black/White

52

Relay

4Part #8201-062

Orange

Plug #2

1

 

2

Purple

3

 

 

4

 

5

 

6

Yellow

7

 

Blue

8

 

 

9

 

10

 

11

 

12

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START UP

THESE UNITS REQUIRE R-410A REFRIGERANT AND POLYOL ESTER OIL.

GENERAL:

1.Use separate service equipment to avoid cross contamination of oil and refrigerants.

2.Use recovery equipment rated for R-410A refrigerant.

3.Use manifold gauges rated for R-410A (800 psi/250 psi low).

4.R-410A is a binary blend of HFC-32 and HFC-125.

5.R-410A is nearly azeotropic - similar to R-22 and R-12. Although nearly azeotropic, charge with liquid refrigerant.

6.R-410A operates at 40-70% higher pressure than R-22, and systems designed for R-22 cannot withstand this higher pressure.

7.R-410A has an ozone depletion potential of zero, but must be reclaimed due to its global warming potential.

8.R-410A compressors use Polyol Ester oil.

9.Polyol Ester oil is hygroscopic; it will rapidly absorb moisture and strongly hold this moisture in the oil.

10.A liquid line dryer must be used - even a deep vacuum will not separate moisture from the oil.

11.Limit atmospheric exposure to 15 minutes.

12.If compressor removal is necessary, always plug compressor immediately after removal. Purge with small amount of nitrogen when inserting plugs.

TOPPING OFF SYSTEM CHARGE

If a leak has occurred in the system, Bard Manufacturing recommends reclaiming, evacuating (see criteria above), and charging to the nameplate charge. If done correctly, topping off the system charge can be done without problems.

With R-410A, there are no significant changes in the refrigerant composition during multiple leaks and recharges. R-410A refrigerant is close to being an azeotropic blend (it behaves like a pure compound or single component refrigerant). The remaining refrigerant charge, in the system, may be used after leaks have occurred and then “top-off” the charge by utilizing the pressure charts on the inner control panel cover as a guideline.

REMEMBER: When adding R-410A refrigerant, it must come out of the charging cylinder/tank as a liquid to avoid any fractionation, and to insure optimal system performance. Refer to instructions for the cylinder that is being utilized for proper method of liquid extraction.

WARNING

Failure to conform to these practices could lead to damage, injury or death.

SAFETY PRACTICES:

1.Never mix R-410A with other refrigerants.

2.Use gloves and safety glasses. Polyol Ester oils can be irritating to the skin, and liquid refrigerant will freeze the skin.

3.Never use air and R-410A to leak check; the mixture may become flammable.

4.Do not inhale R-410A – the vapor attacks the nervous system, creating dizziness, loss of coordination and slurred speech. Cardiac irregularities, unconsciousness and ultimate death can result from breathing this concentration.

5.Do not burn R-410A. This decomposition produces hazardous vapors. Evacuate the area if exposed.

6.Use only cylinders rated DOT4BA/4BW 400.

7.Never fill cylinders over 80% of total capacity.

8.Store cylinders in a cool area, out of direct sunlight.

9.Never heat cylinders above 125°F.

10.Never trap liquid R-410A in manifold sets, gauge lines or cylinders. R-410A expands significantly at warmer temperatures. Once a cylinder or line is full of liquid, any further rise in temperature will cause it to burst.

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START UP

DESCRIPTION OF STANDARD

EQUIPMENT

High Pressure Switch

Provides refrigerant circuit high pressure protection. Includes lockout circuit that is resettable from room thermostat.

Compressor Control Module

Provides short cycle protection for the compressor which extends compressor life, as well as high and low pressure switch monitoring and alarm functions.

Service Lights

One service light indicates when service is required.

Check System – detects high or low pressure switch operation for compressor protection.

OPTIONAL CFM (Q36A1, Q42A1, Q48A1 AND Q60A1 ONLY)

These units are shipped from the factory set to operate at the optional CFM level shown in Table 7. This provides lower operating sound levels for non-ducted, free discharge applications. This CFM level will reduce the system capacity performance by approximately 2% at the same energy efficiency.

Rated CFM is required for ducted applications for maximum performance rating. To obtain full CFM on these models, connect jumper wire as follows:

1.Disconnect all power to the unit. Failure to do so may result in damage to the motor.

2.Open return air service panel

3.Open inner control panel cover

4.Locate low voltage terminal strip. There is a pink jumper wire with both ends attached to terminal marked “G2”. Move one end of this jumper to terminal “Y”.

5.Reverse steps to reassemble.

IMPORTANT INSTALLER NOTE

For improved start-up performance, wash the indoor coil with a dishwasher detergent.

CAUTION

Do not plug in or unplug blower motor connectors while the power is on.

Failure to do so may result in motor failure.

PHASE MONITOR

All units with three phase scroll compressors are equipped with a 3 phase line monitor to prevent compressor damage due to phase reversal.

The phase monitor in this unit is equipped with two LEDs. If the Y signal is present at the phase monitor and phases are correct the green LED will light and the compressor contactor is allowed to energize.

If phases are reversed, the red fault LED will be lit and compressor operation is inhibited.

If a fault condition occurs, reverse two of the supply leads to the unit. Do not reverse any of the unit factory wires as damage may occur.

THREE PHASE SCROLL COMPRESSOR START UP INFORMATION

Scroll compressors, like several other types of compressors, will only compress in one rotational direction. Direction of rotation is not an issue with single phase compressors since they will always start and run in the proper direction.

However, three phase compressors will rotate in either direction depending upon phasing of the power. Since there is a 50-50 chance of connecting power in such a way as to cause rotation in the reverse direction, verification of proper rotation must be made.

Verification of proper rotation direction is made by observing that suction pressure drops and discharge pressure rises when the compressor is energized.

Reverse rotation also results in an elevated sound level over that with correct rotation, as well as, substantially reduced current draw compared to tabulated values.

Verification of proper rotation must be made at the time the equipment is put into service. If improper rotation is corrected at this time there will be no negative impact on the durability of the compressor. However, reverse operation for even one hour may have a negative impact on the bearing due to oil pump out.

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All three phase scroll compressors used in the Q-TEC series are wired identically internally. As a result, once the correct phasing is determined for a specific system or installation, connecting properly phased power leads to the same Fusite terminal should maintain proper rotation direction. The direction of rotation of the motor may be changed by reversing any two line connections to the unit.

COMPRESSOR CONTROL MODULE

The compressor control module is standard on all models covered by this manual. The compressor control is an anti-short cycle/lockout timer with high and low pressure switch monitoring and alarm relay output.

Adjustable Delay On Make And Break Timer

On initial power up or any time power is interrupted to the unit, the delay on make period begins, which will be 2 minutes plus 10% of the delay on break setting.

When the delay on make is complete and the high pressure switch (and low pressure switch if employed) is closed, the compressor contactor is energized.

Upon shutdown the delay or break timer starts and prevents restart until the delay on break and delay on make periods have expired.

During routine operation of the unit with no power interruptions the compressor will operate on demand with no delay.

High Pressure Switch and Lockout Sequence

If the high pressure switch opens, the compressor contactor will de-energize immediately. The lockout timer will go into a soft lockout and stay in soft lockout until the high pressure switch closes and the delay on break time has expired. If the high pressure switch opens again in this same operating cycle the unit will go into manual lockout condition and the alarm relay circuit will energize. Recycling the wall thermostat resets the manual lockout.

Low Pressure Switch, Bypass, and Lockout

Sequence

If the low pressure switch opens for more than 120 seconds, the compressor contactor will de-energize and go into a soft lockout. Regardless the state of the low pressure switch, the contactor will reenergize after the delay on make time delay has expired. If the low pressure switch remains open, or opens again for longer than 120 seconds the unit will go into manual lockout condition and the alarm relay circuit will energize. Recycling the wall thermostat resets the manual lockout.

Alarm Relay Output

Alarm terminal is output connection for applications where alarm relay is employed. This terminal is powered whenever compressor is locked out due to HPC or LPC sequences as described.

NOTE: Both high and low pressure switch controls are inherently automatic reset devices. The high pressure switch and low pressure switch cut out and cut in settings are fixed by specific air conditioner or heat pump unit model. The lockout features, both soft and manual, are a function of the Compressor Control Module.

ADJUSTMENTS

Adjustable Delay on Make and Delay on Break Timer

The potentiometer is used to select Delay on Break time from 30 seconds to 5 minutes. Delay on Make (DOM) timing on power-up and after power interruptions is equal to 2 minutes plus 10% of Delay on Break (DOB)

setting:

 

 

0.5 minute (30 seconds)

DOB = 123 second DOM

1.0 minute (60 seconds)

DOB = 126 second DOM

2.0 minute (120 seconds)

DOB = 132

second DOM

3.0 minute (180 seconds)

DOB = 138

second DOM

4.0 minute (240 seconds)

DOB = 144

second DOM

5.0 minute (300 seconds)

DOB = 150

second DOM

During routine operation of the unit with no power interruptions the compressor will operate on demand with no delay.

Typical Settings for Dual Unit Installation:

Unit 1: DOB set at 2 minutes, and DOM is 132 seconds

Unit 2: DOB set at 4 minutes, and DOM is 144 seconds

SERVICE HINTS

1.Caution user to maintain clean air filters at all times. Also, not to needlessly close off supply air registers. This may reduce airflow through the system, which shortens equipment service life as well as increasing operating costs and noise levels.

2.Check all power fuses or circuit breakers to be sure they are the correct rating.

3.Periodic cleaning of the outdoor coil to permit full and unrestricted airflow circulation is essential.

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6.Some service requires the need to remove the unit from the wall including replacement of the indoor coil and/or the outdoor coil. Also servicing the outdoor fan motor or fan blade will require removing the unit from the wall if the unit is installed at a height that is not easily accessible from the outside of the building.

In order to remove the unit from the wall the following procedure must be used:

a.Turn off power to the unit at the remote location. Some units may have more than one power supply.

b.Disconnect field wiring at unit terminal block and remove from unit.

c.Disconnect condensate drain.

d.Remove the lower skirting around the unit.

e.Remove wall mounting brackets from wall on each side of the unit.

f.If unit is attached to duct work, remove upper cabinet extension by removing the top center screw only from the cabinet side panel.

g.Remove screws that attach the duct work to the unit flanges.

This unit is equipped with four rollers mounted to the base. For ease of pulling unit out from the wall, you may want to remove the bottom service door which requires removal of the return air panel, and grip the front flange of the base pan then pull straight out.

7.Annual maintenance is required to make sure that all of the systems are functioning properly.

a.Check to make sure that the drains are not obstructed in any way.

b.Remove any debris in the condenser section of the unit.

c.Inspect and clean mist eliminator as described below.

d.Inspect and wash outdoor coil as necessary.

MIST ELIMINATOR SERVICE

A mist eliminator is supplied with the wall sleeve. The mist eliminator is constructed of an aluminum frame and mesh. The mist eliminator is located in the top section of the wall sleeve and can be removed from the inside of the building without removing the unit from the wall. This requires that the ventilation package must be removed.

It is recommended that the mist eliminator be inspected annually and serviced as required. The mist eliminator can be inspected from the outside of the building by looking through the outdoor grille. The mist eliminator can be serviced from the outside by using a vacuum cleaner. The outdoor grille must be removed. Use the vacuum to remove dirt and debris from the surface of the mist eliminator. If additional cleaning is required, the mist eliminator will have to be removed from the sleeve.

The ventilation package will have to be removed to gain access tot he mist eliminator. If the blank off plate option is used, it is not necessary to service the mist eliminator. The steps necessary to remove each of the vent options are listed on the following pages.

The mist eliminator can be cleaned by washing with soap and water. The excess water should be shaken off the mist eliminator before it is reinstalled.

VENT OPTIONS

BAROMETRIC FRESH AIR DAMPER (Standard)

Before starting, make sure the power has been turned off. The return air grille panel must be removed. The fresh air damper assembly can be seen on the back of the unit. See Figure 21.

1.The fresh air damper is attached to the back of the unit with one screw on either side of the assembly. Both of the screws must be removed.

2.Once the mounting screws are removed, tilt the assembly down and lift it out.

The mist eliminator can be seen through the opening. The mist eliminator must be raised up and the bottom can be pulled toward the front of the unit.

ECONOMIZER OR COMMERCIAL ROOM

VENTILATOR (Option)

Before starting, make sure the power has been turned off. The return air grille panel must be removed. The economizer (EIFM) or commercial room ventilator (CRV) can be seen after the panel has been removed. The CRV or EIFM must be removed to gain access to the mist eliminator.

1.The two mounting screws in the front of the EIFM or CRV must be removed.

2.The power connectors for the CRV (located on the right side of the unit) must be disconnected. Squeeze the tabs on the sides of the connector and pull straight out. Unplug both of the connectors.

3.Slide the EIFM or CRV straight out of the unit.

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The mist eliminator can be seen through the opening in the back of the unit. The mist eliminator must be raised up and the bottom can be pulled toward the front of the unit and removed.

Q-TEC ENERGY RECOVERY VENTILATOR

(Option)

Before starting, make sure that the power has been turned off. The return air grille panel must be removed. The energy recovery ventilator (QERV) can be seen after the panel has been removed. To gain access to the mist eliminator, the QERV must be removed. See Figure 22.

1.The front fill plate of the QERV must be removed. There is one screw on either side of the plate. Remove these screws and remove the plate.

2.On either side of the QERV there are mounting screws that hold the QERV in place. Remove both of these screws.

3.Underneath the heat recovery cassette there is a power connector for the lower blower assembly. To disconnect this plug, the tabs on both sides of the plug must be squeezed to release the plug. While squeezing the tabs, pull the plug out of the socket.

4.The QERV is plugged into the unit in the right side of the unit. Both of these plugs must be disconnected to remove the QERV. Squeeze the tabs on the sides of the connector and pull straight out.

5.Slide the QERV assembly straight out of the unit, being careful not to let the cassette slide out of the QERV.

The mist eliminator can be seen through the opening in the back of the unit. The mist eliminator must be raised up and the bottom can be pulled toward the front of the unit and removed.

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FIGURE 21

FRESH AIR DAMPER REMOVAL

MOUNTING SCREW

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FIGURE 22

QERV REMOVAL

POWER

CONNECTORS

MOUNTING SCREWS

LOWER BLOWER

ASSEMBLY POWER

CONNECTOR

FRONT FILL

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SEQUENCE OF OPERATION

Cooling – Circuit R-Y makes the thermostat pull in the compressor contactor starting the compressor and outdoor motor. The G (indoor motor) circuit is automatically completed on any call for cooling operation, or can be energized by manual fan switch on subbase for constant air circulation.

Heating – Circuit is completed for R-W1 on each heating “on” cycle, energizing the electric heat contactor. R-G also makes starting indoor blower motor.

Second stage heat – Energized circuit R-W2 and the electric heat contactor for the second bank of heaters (if equipped) is energized.

High / Low Pressure control provides protection for the compressor. In the advent system pressures go above 600 PSI or below 15 PSI in cooling mode the compressor will be stopped. This will activate the red light located in the control panel. The lockout circuit will hold compressor off line. When the system problem is corrected, the unit operation can be restored by turning of the main power supply off and then back on, or reset the room thermostat. The low pressure control has a bypass to eliminate nuisance lockout on cold start up. Factory set to 2 minutes.

FIGURE 23

CO2 CONTROLLER – FACTORY SET TO 1000

PPM

OPTIONAL CLIMATE CONTROLS SEQUENCE OF OPERATION

The Climate Control Option A is an electronic, nonprogrammable manual or auto changeover thermostat. The thermostat may be manually set to heat or cool mode. The thermostat will maintain the temperature set on the thermostat in the mode in which it is set.

The Climate Control Option D is an electronic, programmable thermostat. The thermostat can be set in the heat, cool or automatic mode. When the thermostat is sent in the heat mode, it can heat only to maintain the temperature set on the thermostat. When the thermostat is set in the cool mode, it can cool only to maintain the temperature set on the thermostat. When the thermostat is set in the automatic mode, the thermostat can change automatically to the heat or cool modes to maintain the temperature set on the thermostat.

The Climate Control Option “H” is an electronic, programmable thermostat and a CO2 controller. The thermostat can be set in the heat, cool or automatic mode. When the thermostat is set in the heat mode, it can heat only to maintain the temperature set on the thermostat. When the thermostat is set in the cool mode, it can cool only to maintain the temperature set on the thermostat. When the thermostat is set in the automatic mode, the thermostat can change automatically to the heat or cool modes to maintain the temperature set on the thermostat.

The CO2 controller will energize the vent option and the ID blower when the room CO2 levels rise over set level. Default CO2 set point is 1000 ppm. See Figure 23.

SW2SW1OUT AN

OFF ON OFF ON 0-100% 20-100% VOLTAGE CURRENT

"SW2" SET TO ON

"AN" SET TO VOLTAGE

"SW1" SET TO ON

"OUT" SET TO 20-100%

MIS-2667

PRESSURE SERVICE PORTS

High and low pressure service ports are installed on all units so that the system operating pressures can be observed. Pressure curves can be found later in the manual covering all models on both cooling and heating cycles. It is imperative to match the correct pressure curve to the unit by model number. Upper and lower service doors must be attached to obtain proper reading.

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TROUBLESHOOTING GE ECMMOTORS

CAUTION:

Disconnect power from unit before removing or replacing connectors, or servicing motor. To avoid electric shock from the motor’s capacitors, disconnect power and wait at least 5 minutes before opening motor.

Symptom Cause/Procedure

Motor rocks slightly when starting

Motor won’t start

• No movement

This is normal start-up for ECM

Check blower turns by hand

Check power at motor

Check low voltage (24 Vac R to C) at motor

Check low voltage connections (G, Y, W, R, C) at motor

Check for unseated pins in connectors on motor harness

Test with a temporary jumper between R - G

Check motor for tight shaft

Perform motor/control replacement check

Perform Moisture Check

• Motor rocks,

• Check for loose or compliant motor mount

but won’t start

• Make sure blower wheel is tight on shaft

 

 

• Perform motor/control replacement check

Motor oscillates up

• It is normal for motor to oscillate with no load

& down while being

on shaft

tested off of blower

 

Motor starts, but

 

runs erratically

 

• Varies up and down

• Check line voltage for variation or “sag”

or intermittent

• Check low voltage connections

 

(G, Y, W, R, C) at motor, unseated pins in

 

motor harness connectors

 

• Check “Bk” for erratic CFM command (in

 

variable-speed applications)

 

• Check out system controls, Thermostat

 

• Perform Moisture Check

• “Hunts” or “puffs” at

• Does removing panel or filter reduce

high CFM (speed)

“puffing”?

 

- Reduce restriction

 

- Reduce max airflow

• Stays at low CFM

• Check low voltage (Thermostat) wires and

despite system call

connections

for cool or heat CFM

• Verify fan is not in delay mode; wait until

 

delay complete

 

• “R” missing/not connected at motor

 

• Perform motor/control replacement check

• Stays at high CFM

• “R” missing/not connected at motor

 

• Is fan in delay mode? - wait until delay time

 

complete

 

• Perform motor/control replacement check

• Blower won’t shut off

• Current leakage from controls into G, Y or W?

 

Check for Triac switched thermostat or solid-

 

state relay

Excessive noise

• Determine if it’s air noise, cabinet, duct or

 

motor noise; interview customer, if necessary

• Air noise

• High static creating high blower speed?

 

- Is airflow set properly?

 

- Does removing filter cause blower to slow

 

down? Check filter

 

- Use low-pressure drop filter

 

- Check/correct duct restrictions

Symptom Cause/Procedure

Noisy blower or cabinet • Check for loose blower housing, panels, etc.

High static creating high blower speed?

-Check for air whistling through seams in ducts, cabinets or panels

-Check for cabinet/duct deformation

“Hunts” or “puffs” at • Does removing panel or filter reduce

high CFM (speed)

“puffing”?

 

- Reduce restriction

 

- Reduce max. airflow

Evidence of Moisture

 

• Motor failure or

• Replace motor and Perform Moisture Check

malfunction has occurred

 

and moisture is present

 

• Evidence of moisture

• Perform Moisture Check

present inside air mover

 

Do

Don’t

Check out motor, controls, wiring and connections thoroughly before replacing motor

Orient connectors down so water can’t get in

-Install “drip loops”

Use authorized motor and model #’s for replacement

Keep static pressure to a minimum:

-Recommend high efficiency, low static filters

-Recommend keeping filters clean.

-Design ductwork for min. static, max. comfort

-Look for and recommend ductwork improvement, where necessary

Size the equipment wisely

Check orientation before inserting motor connectors

Automatically assume the motor is bad.

Locate connectors above 7 and 4 o’clock positions

Replace one motor or control model # with another (unless an authorized replacement)

Use high pressure drop filters some have ½" H20 drop!

Use restricted returns

Oversize system, then compensate with low airflow

Plug in power connector backwards

Force plugs

Moisture Check

Connectors are oriented “down” (or as recommended by equipment manufacturer)

Arrange harness with “drip loop” under motor

Is condensate drain plugged?

Check for low airflow (too much latent capacity)

Check for undercharged condition

Check and plug leaks in return ducts, cabinet

Comfort Check

Check proper airflow settings

Low static pressure for lowest noise

Set low continuous-fan CFM

Use humidistat and 2-speed cooling units

Use zoning controls designed for ECM that regulate CFM

Thermostat in bad location?

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TROUBLESHOOTING GE ECMMOTORS CONT’D.

Replacing ECM Control Module

To replace the control module for the GE variable-speed indoor blower motor you need to take the following steps:

1. You MUST have the correct replacement module. The controls are factory programmed for specific operating modes. Even though they look alike, different modules may have completely different functionality.

USING THE WRONG CONTROL MODULE VOIDS ALL PRODUCT WARRANTIES AND MAY PRODUCE UNEXPECTED RESULTS.

2.Begin by removing AC power from the furnace or air handler being serviced. DO NOT WORK ON THE MOTOR WITH AC POWER APPLIED. To avoid electric shock from the motor’s capacitors, disconnect power and wait at least 5 minutes before opening motor.

3.It is usually not necessary to remove the motor from the blower assembly. However, it is recommended that the whole blower assembly, with the motor, be removed from the furnace/air handler. (Follow the manufacturer’s procedures). Unplug the two cable connectors to the motor. There are latches on each connector. DO NOT PULL ON THE WIRES. The plugs remove easily when properly released.

4.Locate the two standard ¼" hex head bolts at the rear of the control housing (at the back end of the control opposite the shaft end). Refer to Figure 24. Remove these two bolts from the motor and control assembly while holding the motor in a way that will prevent the motor or control from falling when the bolts are removed. If an ECM2.0 control is being replaced (recognized by an aluminum casting rather that a deep-drawn black steel can housing the electronics), remove only the hex-head bolts.

DO NOT REMOVE THE TORX-HEAD SCREWS.

5.The control module is now free of mechanical attachment to the motor endshield but is still connected by a plug and three wires inside the control. Carefully rotate the control to gain access to the plug at the control end of the wires. With thumb and forefinger, reach the latch holding the plug to the control and release it by squeezing the latch tab and the opposite side of the connector plug and gently pulling the plug out of the connector socket in the control. DO NOT PULL ON THE WIRES. GRIP THE PLUG ONLY.

6.The control module is now completely detached from the motor. Verify with a standard ohmmeter that the resistance from each motor lead (in the motor plug just removed) to the motor shell is >100K ohms. Refer to Figure 25. (Measure to unpainted motor end plate.) If any motor lead fails this test, do not proceed to install the control module.

THE MOTOR IS DEFECTIVE AND MUST BE REPLACED.

Installing the new control module will cause it to fail also.

7.Verify that the replacement control is correct for your application. Refer to the manufacturer's authorized replacement list.

USING THE WRONG CONTROL WILL RESULT IN IMPROPER OR NO BLOWER OPERATION. Orient the control module so that the 3-wire motor plug can be inserted into the socket in the control. Carefully insert the plug and press it into the socket until it latches. A SLIGHT CLICK WILL BE HEARD WHEN PROPERLY INSERTED. Finish installing the replacement control per one of the three following paragraphs, 8a, 8b or 8c.

8a. IF REPLACING AN ECM 2.0 CONTROL (control in cast aluminum can with air vents on the back of the can) WITH AN ECM 2.3 CONTROL (control containing black potting for water protection in black deep-drawn steel case with no vents in the bottom of the can), locate the two through-bolts and plastic tab that are packed with the replacement control. Insert the plastic tab into the slot at the perimeter of the open end of the can so that the pin is located on the inside of the perimeter of the can. Rotate the can so that the tab inserts into the tab locater hole in the endshield of the motor. Using the two through-bolts provided with the replacement control, reattach the can to the motor.

THE TWO THROUGH-BOLTS PROVIDED WITH THE REPLACEMENT ECM 2.3 CONTROL ARE SHORTER THAN THE BOLTS ORIGINALLY REMOVED FROM THE ECM 2.0 CONTROL AND MUST BE USED IF SECURE ATTACHMENT OF THE CONTROL TO THE MOTOR IS TO BE ACHIEVED.

DO NOT OVERTIGHTEN THE BOLTS.

8b. IF REPLACING AN ECM 2.3 CONTROL WITH AN ECM 2.3 CONTROL, the plastic tab and shorter through-bolts are not needed. The control can be oriented in two positions 180° apart. MAKE SURE THE ORIENTATION YOU SELECT FOR REPLACING THE CONTROL ASSURES THE CONTROL'S CABLE CONNECTORS WILL BE LOCATED DOWNWARD IN THE APPLICATION SO THAT WATER CANNOT RUN DOWN THE CABLES AND INTO THE CONTROL. Simply orient the new control to the motor's endshield, insert bolts, and tighten. DO NOT OVERTIGHTEN THE BOLTS.

8c. IF REPLACING AN ECM 2.0 CONTROL WITH AN ECM 2.0 CONTROL (It is recommended that ECM 2.3 controls be used for all replacements), the new control must be attached to the motor using through bolts identical to those removed with the original control. DO NOT OVERTIGHTEN THE BOLTS.

9.Reinstall the blower/motor assembly into the HVAC equipment. Follow the manufacturer's suggested procedures.

10.Plug the 16-pin control plug into the motor. The plug is keyed. Make sure the connector is properly seated and latched.

11.Plug the 5-pin power connector into the motor. Even though the plug is keyed, OBSERVE THE PROPER ORIENTATION. DO NOT FORCE THE CONNECTOR. It plugs in very easily when properly oriented. REVERSING THIS PLUG WILL CAUSE IMMEDIATE FAILURE OF THE CONTROL MODULE.

12.Final installation check. Make sure the motor is installed as follows: a. Unit is as far INTO the blower housing as possible.

b.Belly bands are not on the control module or covering vent holes.

c.Motor connectors should be oriented between the 4 o’clock and 8 o’clock positions when the blower is positioned in its final location and orientation.

d.Add a drip loop to the cables so that water cannot enter the motor by draining down the cables. Refer to Figure 26.

The installation is now complete. Reapply the AC power to the HVAC equipment and verify that the new motor control module is working properly. Follow the manufacturer's procedures for disposition of the old control module.

 

 

Figure 24

 

Figure 25

 

 

Figure 3

 

Figure 4

 

Control Disassembly

 

Winding Test

 

 

 

Motor Connector

Only remove

 

From Motor

(3-pin)

 

Hex Head Bolts

Push until

 

 

 

Latch Seats

 

 

 

Over Ramp

 

 

 

 

Circuit

 

 

 

 

Board

 

 

ECM 2.0

 

Motor

 

 

 

 

 

 

 

 

 

 

Motor OK when

Note:

 

 

 

R > 100k ohm

 

 

 

 

Use the shorter

 

 

 

 

bolts and

 

 

 

 

alignment pin

 

 

 

FigureFigure265

supplied when

 

 

 

replacing an

 

 

 

Drip Loop

ECM 2.0

 

Motor Connector

 

 

control.

 

 

Connector Orientation

 

(3-pin)

Back of

ECM

Control

Between 4 and 8 o'clock

 

2.3/2.5

Control Connector

 

 

 

 

(16-pin)

 

 

 

 

Power Connector

 

 

 

 

(5-pin)

 

 

 

 

Hex-head Screws

 

Drip Loop

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FAN BLADE SETTING DIMENSIONS

Any service work requiring removal or adjustment in the fan and/or motor area will require that the dimensions in Table 5 be checked and blade adjusted in or out of the motor shaft accordingly.

FIGURE 27

FAN BLADE SETTING

R-410A

REFRIGERANT CHARGE

This unit was charged at the factory with the quantity of refrigerant listed on the serial plate. AHRI capacity and efficiency ratings were determined by testing with this refrigerant charge quantity.

The following pressure tables show nominal pressures for the units. Since many installation specific situations can affect the pressure readings, this information should only be used by certified technicians as a guide for evaluating proper system performance. They shall not be used to adjust charge. If charge is in doubt, reclaim, evacuate and recharge the unit to the serial plate charge.

TABLE 5

FAN BLADE DIMENSIONS

 

DIMENSION A

MODEL

(INCHES)

 

 

All

 

Q**A1

.750

Models

 

 

 

TABLE 6

INDOOR BLOWER PERFORMANCE

 

 

 

1

2

3

4

 

 

 

 

 

 

Optional

Continuous

CFM @

Model

 

Rated ESP

Max. ESP

Rated CFM

CFM

CFM

Max. ESP

 

 

 

 

 

 

 

 

Q24A1

5

.10

0.5

800

 

800

700

 

 

 

 

 

 

 

 

Q30A1

 

.15

0.8

1000

 

1000

910

 

 

 

 

 

 

 

 

Q36A1

 

.15

0.8

1200

1000

1000

1175

 

 

 

 

 

 

 

 

Q42A1

 

.15

0.8

1200

1000

1000

1175

 

 

 

 

 

 

 

 

Q48A1

 

.15

0.8

1400

1100

1100

1175

 

 

 

 

 

 

 

 

Q60A1

 

.20

0.5

1550

1250

1250

1400

 

 

 

 

 

 

 

 

NOTE: These units are equipped with a variable speed (ECM) indoor motor that automatically adjust itself to maintain approximately the same rate of indoor airflow in both heating and cooling, dry and wet coil conditions and at both 230/208 or 460 volts.

1 Maximum ESP (inches WC) shown is with 1" thick disposable filter (reduced by .2 for 2" filter).

2 Rated CFM for ducted applications – required for maximum performance rating. To obtain full CFM on models Q36A1, Q42A1, Q48A1 and Q60A1 connect the pink jumper wire (provided) to terminal #G2 and #Y on the low voltage terminal block located in the circuit breaker box.

3 Optional CFM – the unit is shipped from the factory set to operate at the optional CFM level shown. This provides lower operating sound levels for non-ducted, free discharge applications. This reduces system capacity performance by approximately 2% at the same energy efficiency.

4 Continuous fan CFM is the total air being circulated during continuous fan mode.

5 Model Q24A1 – when operating on 2nd stage heating the indoor air will increase to 1000 CFM.

Manual

2100-522B

Page

37 of 38

TABLE 7

COOLINGPRESSURE

(ALL TEMPERATURES IN DEGREES F)

 

RETURN

 

 

AIR TEMPERATURE ENTERING OUTDOOR COIL

 

 

AIR

 

 

 

 

 

 

 

 

 

 

 

 

 

75

80

85

90

95

100

105

110

 

115

MODEL

TEMP.

PRESSURE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

75 DB

Low Side

116

119

122

124

127

130

132

134

 

136

 

62 WB

High Side

314

335

358

380

404

428

452

478

 

503

 

 

 

 

 

 

 

 

 

 

 

 

 

Q24A1

80 DB

Low Side

124

127

130

133

134

139

141

143

 

145

67 WB

High Side

322

344

367

390

414

439

464

490

 

516

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

85 DB

Low Side

128

131

135

138

141

144

146

148

 

150

 

72 WB

High Side

333

356

380

404

428

454

480

507

 

534

 

 

 

 

 

 

 

 

 

 

 

 

 

 

75 DB

Low Side

119

121

122

124

127

129

131

133

 

135

 

62 WB

High Side

321

344

368

391

414

437

460

484

 

507

 

 

 

 

 

 

 

 

 

 

 

 

 

Q30A1

80 DB

Low Side

127

129

131

133

136

138

140

142

 

144

67 WB

High Side

329

353

377

401

425

448

472

496

 

520

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

85 DB

Low Side

131

134

136

138

141

143

145

147

 

149

 

72 WB

High Side

341

365

390

415

440

464

489

513

 

538

 

 

 

 

 

 

 

 

 

 

 

 

 

 

75 DB

Low Side

112

118

123

128

132

136

137

139

 

140

 

62 WB

High Side

347

373

401

428

454

481

508

534

 

561

 

 

 

 

 

 

 

 

 

 

 

 

 

Q36A1

80 DB

Low Side

120

126

132

137

141

145

147

149

 

150

67 WB

High Side

356

383

411

439

440

493

521

548

 

575

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

85 DB

Low Side

124

130

137

142

146

150

152

154

 

155

 

72 WB

High Side

368

396

425

454

482

510

539

567

 

595

 

 

 

 

 

 

 

 

 

 

 

 

 

 

75 DB

Low Side

116

119

122

124

127

129

131

133

 

135

 

62 WB

High Side

356

380

406

431

457

483

509

535

 

563

 

 

 

 

 

 

 

 

 

 

 

 

 

Q42A1

80 DB

Low Side

124

127

130

133

136

138

140

142

 

144

67 WB

High Side

365

390

416

442

469

495

522

549

 

577

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

85 DB

Low Side

128

131

135

138

141

143

145

147

 

149

 

72 WB

High Side

378

404

431

457

485

512

540

568

 

597

 

 

 

 

 

 

 

 

 

 

 

 

 

 

75 DB

Low Side

119

121

122

124

127

129

131

134

 

136

 

62 WB

High Side

343

366

390

414

440

466

493

522

 

551

 

 

 

 

 

 

 

 

 

 

 

 

 

Q48A1

80 DB

Low Side

127

129

131

133

135

138

140

143

 

145

67 WB

High Side

352

375

400

425

450

478

506

535

 

565

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

85 DB

Low Side

131

134

136

138

141

143

145

148

 

150

 

72 WB

High Side

364

388

414

440

467

495

524

554

 

585

 

 

 

 

 

 

 

 

 

 

 

 

 

 

75 DB

Low Side

112

116

120

122

124

125

126

126

 

125

 

62 WB

High Side

362

386

410

436

462

488

514

541

 

568

 

 

 

 

 

 

 

 

 

 

 

 

 

Q60A1

80 DB

Low Side

120

124

128

130

131

134

135

135

 

134

67 WB

High Side

371

396

421

447

474

500

527

555

 

583

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

85 DB

Low Side

124

128

132

135

138

139

140

140

 

139

 

72 WB

High Side

384

410

436

463

491

518

545

574

 

603

 

 

 

 

 

 

 

 

 

 

 

 

 

Low side pressure ± 4 psig

High side pressure ± 10 psig

Tables are based upon rated CFM (airflow) across the evaporator coil. If there is any doubt as to correct operating charge being in the system, the charge should be removed, system evacuated and recharged to serial plate instructions.

Manual

2100-522B

Page

38 of 38