Bard QA241D, QA421D, QA301D, QA361D, QA481D Installation Instructions Manual

...

Download

QTEC SERIES

PACKAGED INSTALLATION INSTRUCTIONS

AIR CONDITIONER

Models: QA241D QA301D QA361D QA421D QA481D QA601D

Bard Manufacturing Company Bryan, Ohio 43506

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

MIS-1554

Manual: 2100-438C Supersedes: 2100-438B File: Vol II Tab 14 Date: 06-02-04

CONTENTS

Getting Other Information and Publications

For more information, contact these publishers: .......... 1

EC General Information

EC Model Nomenclature .......................................... 2

Shipping Damage ......................................................... 7

Unit Removal From Skid .............................................. 7

Handling Unit After Removal From Skid....................... 8

General ......................................................................... 8

Minimum Installation Height ......................................... 8

Duct Work .................................................................. 10

Filters .......................................................................... 10

Fresh Air Intake .......................................................... 11

Condensate Drain ...................................................... 11

Separate Evaporator Drain Connection ..................... 11

Service Light ............................................................... 12

Installation Instructions

Mounting the Unit ....................................................... 13

Wiring — Main Power ................................................. 14

Wiring — Low Voltage Wiring..................................... 14

Low Voltage Connections........................................... 15

General ....................................................................... 15

Start Up

Description of Standard Equipment ............................... 20

Optional CFM (QA361, QA421, QA481

and QA601 Only) ........................................................... 20

Important Installer Note.................................................. 20

Phase Monitor ................................................................ 20

Three Phase Scroll Compressor Start Up

Information ................................................................ 20

Compressor Control Module .......................................... 21

Adjustments ................................................................... 21

Service Hints .................................................................. 21

Mist Eliminator Service .................................................. 22

Vent Options .................................................................. 22

Sequence of Operation .................................................. 26

CRV / QERV Operation.................................................. 26

Optional Climate Controls Sequence

of Operation .............................................................. 26

Pressure Service Ports .................................................. 26

Troubleshooting

Troubleshooting Table .................................................... 29

Fan Blade Setting Dimensions ...................................... 30

Refrigerant Charge ........................................................ 30

Pressure Chart ............................................................... 31

Figures

Figure 1 Unit Dimensions .......................................... 6

Figure 2 Air Seal on Bottom of Unit ........................... 7

Figure 3 Removal of Unit From Skid ......................... 7

Figure 4 Unit on Appliance Cart for Moving ............... 8

Figure 5 Installation With Free Blow Plenum ............ 9

Figure 6 Ducted Application ....................................... 9

Figure 7 Supply Duct Connections .......................... 10

Figure 8 Filter Location ............................................ 10

Figure 9 Side Drain .................................................. 11

Figure 10 Optional Rear Drain ................................... 11

Figure 11 Rear Drain (Top View) ............................... 12

Figure 12 Unit Mounting ............................................ 12

Figure 13 Screws in Wheels of Unit .......................... 13

Figure 14 Component Location ................................. 14

Figure 15 Thermostat Plug Terminals ........................ 16

Figure 16 Thermostat Wiring Diagram "X" Option .... 17

Figure 17 Thermostat Wiring Diagram "G" Option ... 18

Figure 18 Thermostat Wiring Diagram "E" Option .... 19

Figure 19 Fresh Air Damper Removal ....................... 24

Figure 20 QERV Removal ......................................... 25

Figure 21 Air Conditioning Mode Circuit Diagram ..... 27

Figure 22 Dehumidification Mode Circuit Diagram .... 27

Figure 23 Fan Blade Setting ...................................... 30

Tables

Table 1 Factory Built-In Electric Heat Table .............. 3

Table 2 Electrical Specifications ................................ 4

Table 2A Electrical Specifications ................................ 5

Table 3 Operating Voltage Range ........................... 14

Table 4 Wall Thermostats and Subbase

Combinations .............................................. 16

Table 5 Troubleshooting .......................................... 29

Table 6 Fan Blade Dimensions ............................... 30

Table 7 Super Heat at Compressor ......................... 30

Table 8 Indoor Blower Performance ........................ 30

Table 9 Cooling Pressure ........................................ 31

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 2100-438 Page 1

Series General Information

QTEC MODEL NOMENCLATURE

QA 36 1 D A 10 X X V X X X

MODEL NUMBER |

QA - QTEC Model

CAPACITY |

24 - 2 Ton 30 - 2-1/2 Ton 36 - 3 Ton 42 - 3-1/2 Ton 48 - 4 Ton 60 - 5 Ton

DEHUMDIFICATION | REHEAT CYCLE

REVISION |

VOLTS & PHASE |

A - 230/208/60/1 B - 230/208/60/3 C - 460/60/3

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 V - Commercial Ventilator - Motorized w/Exhaust

Spring Return

P - Commercial Ventilator - Motorized w/Exhaust

Power Return

R - Energy Recovery Ventilator w/Exhaust

FILTER OPTIONS

X - 1 Inch Fiberglass

(Standard) F - 2 Inch Fiberglass P - 2 Inch Pleated

COLOR OPTIONS

V - Platinum w/Slate

Front (Vinyl)

4 - Gray paint

COIL OPTIONS

X - Standard 1 - Coated Evap. Coil 2 - Coated Cond.

Coil

3 - Coated Evap. &

Cond. Coil

NTERNAL CONTROLS

X - Standard

• High Pressure Switch

• Compressor Time Delay

G - LPC (Low Pressure

Control)

CLIMATE CONTROL OPTIONS

X - None G - Electronic/Non Prog/Man C/O

with Humidistat

E - Electronic/Prog/Man/Auto

with Humidistat

Manual 2100-438 Page 2

CD163AQ

CD124AQ

CD184AQAD106AQBD106AQCD106AQ

BD163AQ

BD124AQ

BD184AQ

AD163AQ

AD124AQ

AD184AQ

TABLE 1

FACTORY BUILT-IN ELECTRIC HEAT TABLE

AD142AQ

AD103AQBD142AQBD103AQCD142AQCD103AQ

1-V0421-V8021-V0421-V8021-V0421-V8023-V0843-V0841-V0421-V8021-V0421-V8023-V0841-V0421-V8021-V0421-V8023-V084

sledoM

0.5083,61092,21 083,61092,21

WKHUTBHUTBHUTBHUTBHUTBHUTBHUTBHUTBHUTBHUTBHUTBHUTBHUTBHUTBHUTBHUTBHUTBHUTB

0.9007,03000,32007,03000,32007,03007,03007,03000,32007,03007,03000,32007,03

0.6005,02063,51005,02063,51005,02005,02005,02063,51005,02

0.21000,14007,03000,14

0.01076,23075,42 076,23075,42076,23075,42

0.51 051,94068,63051,94068,63051,94051,94068,63051,94068,63051,94

Manual 2100-438 Page 3

TABLE 2

ELECTRICAL SPECIFICATIONS

TIUCRICELGNIS TIUCRICLAUD

D 51A

D 51B

D 51C

DETAR

SLEDOM

Z0AD142AQ 50AD 01AD

Z0BD142AQ 60BD 90BD

Z0CD142AQ 60CD 90CD

Z0AD103AQ 50AD 01AD

Z0BD103AQ 60BD 90BD 21BD

Z0CD103AQ 60CD 90CD 21CD

Z0AD163AQ 50AD 01AD

Z0BD163AQ 60BD 90BD

Z0CD163AQ 60CD 90CD

&STLOV SESAHP

1-802/032

3-802/032

3-064

1-802/032

3-802/032

3-064

3-802/032

3-064

.ON

DLEIF

REWOP

STIUCRIC

1 1 1

1 1 1 1

1 1 1

2RO1

1 1 1 1

MUMINIM TIUCRIC

02 03 55

51 42 33

21 71

52 23 75

81 52 43 34

01 41 81 32

82 33 85 38

12 62 53 35

11 41 81 72

YTICAPMA

03 03 06

02 52 53

51 51 02

53 53 06

52 52 53 54

51 51 02 52

53 53 06 09

03 03 53 06

51 51 02 03

MUMIXAM

LANRETXE ROESUF TIUCRIC

REKAERB

ERIW

EZIS

01 01

21 01

41 41 21

8 8 6

01 8 6

8 8 6 4

01 8 6

DLEIF

REWOP

ERIW

EZIS

01 01 01

21 01 01

41 41 21

01 01 01

01 01 01 01

41 41 21 01

01 8 8

MUMINIM TIUCRIC

DNUORG

YTICAPMA

TKC

MUMIXAM

ROESUF TIUCRIC

TKC

LANRETXE

REKAERB

TKC

DLEIF

REWOP

TKC

EZISERIW

TKC

DNUORG

EZISERIW

TKC

Maximum size of the time delay fuse or HACR type circuit breaker for protection of field wiring conductors.

Based on 75° C copper wire. All wiring must conform to the National Electrical Code and all local codes.

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.

ELECTRICAL SPECIFICATIONS CONTINUED ON PAGE 5 TABLE 2A

Manual 2100-438 Page 4

D51A

D51B

D51C

D51A

D51B

D51C

D51A

D51B

D51C

TABLE 2A

ELECTRICAL SPECIFICATIONS

TIUCRICELGNIS TIUCRICLAUD

.ON

DETAR

LEDOM

Z0AD124AQ 50AD 01AD

Z0BD124AQ 60BD 90BD

Z0CD124AQ 60CD 90CD

Z0AD184AQ 50AD 01AD

Z0BD184AQ 50BD 01BD

Z0CD184AQ 60CD 90CD

Z0AD106AQ 01AD

Z0BD106AQ 90BD

Z0CD106AQ 90CD

&STLOV

ESAHP

1-802/032

3-802/032

3-064

1-802/032

3-802/032

3-064

1-802/032

3-802/032

3-064

DLEIF

REWOP

STIUCRIC

1 1 1

2RO1

1 1 1 1

1 1 1

2RO1

1 1 1 1

1 1

2ro1

1 1 1

MUMINIM TIUCRIC

33 33 85 38

52 62 53 35

31 41 81

53 53 85 38

62 62 53 35

41 41 81

64 95 48

23 63 55

71 91 82

YTICAPMA

05 05 06 09

53 53 53 06

51 51 02 03

05 05 06 09

53 53 04 06

51 51 02 03

06 06 09

54 54 06

02 02 03

MUMIXAM

LANRETXE ROESUF TIUCRIC

REKAERB

ERIW

EZIS

8 8 6 4

8 8 8 6

41 41 21 01

8 8 6 4

8 8 6

21 21 21 01

8 6 4

8 8 6

21 21 01

DLEIF

REWOP

ERIW

EZIS

01 8 8

01 8

MUMINIM

TIUCRIC

DNUORG

YTICAPMA

TKC

MUMIXAM

ROESUF TIUCRIC

REKAERB

TKC

LANRETXE

TKC

DLEIF

REWOP

EZISERIW

TKC

DNUORG

EZISERIW

TKC

Maximum size of the time delay fuse or HACR type circuit breaker for protection of field wiring conductors.

Based on 75° C copper wire. All wiring must conform to the National Electrical Code and all local codes.

These “Minimum Circuit Ampacity” values are to be used for sizing the field power conductors. Refer to the National

Manual 2100-438 Page 5

FIGURE 1

UNIT DIMENSIONS

Manual 2100-438 Page 6

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 fork lift 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 QT

Air Seal

the unit. The unit can be slid forward on the skit 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.

UNIT

MIS-1008

FIGURE 3

REMOVAL OF UNIT FROM SKID

Hold Skid Down

A Shipping Brackets B Front Wheels Over Edge C Front Wheels On Floor

MIS-1007

Manual 2100-438 Page 7

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.

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.

APPLIANCE

CART

FIGURE 4

UNIT ON APPLIANCE CART

QTEC UNIT

(Right Side)

STRAP

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.

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 1 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.

COMPRESSOR

Manual 2100-438 Page 8

MIS-1555

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. 4-1/2 in. This provides enough clearance to install the duct work. See Figure 6.

8 FT. - 5 IN.

FIGURE 5

INSTALLATION WITH FREE BLOW PLENUM

CEILING

8 FT. - 6 IN.

MINIMUM RECOMMENDED

CEILING HEIGHT

7 FT. - 4 IN.

UNIT HEIGHT

20 IN.

MINIMUM

FIGURE 6

DUCTED APPLICATION

SUSPENDED

CEILING

MINIMUM RECOMMENDED

FIXED CEILING

12 IN.

MINIMUM

2 IN. MINIMUM

FROM DUCT FLANGE

TO DUCT BOTTOM

8 FT. - 7 IN.

CEILING HEIGHT

FLOOR

MIS-1574

DUCT

DUCT FLANGE

8 FT. - 4.5 IN.

MINIMUM REQUIRED

INSTALLATION HEIGHT

FLOOR

MIS-1573

Manual 2100-438 Page 9

DUCT WORK

All duct work must be properly sized for the design air flow 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 QTEC 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.

FIGURE 7

SUPPLY DUCT CONNECTIONS

SUPPLY DUCT TO BE FIELD SUPPLIED

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

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 air flow up to the maximum ESP shown in Table 8. 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 1/4 turn fasteners 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

ATTACHMENT SCREWS TO BE FIELD SUPPLIED

ROOM SIDE OF QTEC UNIT

DUCT FLANGE

MIS-978

PROVIDED WITH UNIT

NOTE: Unit cabinet, supply air duct and free blow

plenum are approved for “0” clearance to combustible material.

The QTEC 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.

FILTERS

RETURN AIR GRILLE

Manual 2100-438 Page 10

MIS-1575

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 air flow. The Damper blade will now open when the indoor blower is operating. If less than maximum fresh air flow 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.

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.

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, both standard and heated versions, are available to facilitate easy installation, and also removability of heat pump for service.

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.

FIGURE 9

SIDE DRAIN (SIDE VIEW)

QTEC UNIT

FIGURE 10

OPTIONAL REAR DRAIN

PLUG SIDE DRAIN

MIS-975

Manual 2100-438 Page 11

FIGURE 11

REAR DRAIN (TOP VIEW)

DRAIN LINE

WALL (MAXIMUM 10” FOR REAR DRAIN)

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.

SLEEVE

WATER TRAP

MIS-977

COUPLINGS NOT SHOWN BUT RECOMMENDED FOR EASE OF REMOVABILITY FOR SERVICE.

WALL BRACKET

UNIT

FIGURE 12

UNIT MOUNTING

SIDE TRIM (2 PCS.)

BOTTOM

TRIM PIECE

Manual 2100-438 Page 12

BOTTOM TRIM EXTENSION

MIS-1576

SIDE TRIM (2 PCS.)

#8 SCREW

PROVIDED

(LIGHT COLOR)

MOUNTING BRACKET

CABINET SIDE PANEL

ENLARGED VIEW OF MOUNTING

BRACKET SHOWING SLEEVE TO

CABINET ATTACHMENT

MOUNTING BRACKET

MIS-1061

WALL SLEEVE

#10 HEX

HEAD SCREW

PROVIDED

INSTALLATION INSTRUCTIONS

MOUNTING THE UNIT

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

When installing a QTEC 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 QT reference see Figure 12 (page 11).

1. Attach mounting brackets to the wall sleeve with screws provided.

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 13.

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

, for

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.

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. The 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 QSTX42A, is available.

REMOVING LOCKING SCREWS FROM WHEELS

FIGURE 13

REMOVE SCREWS FROM WHEELS BEFORE ROLLING INTO PLACE

MIS-1018

Manual 2100-438 Page 13

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.

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 14.

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 form 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

PATEGNAR

V042612–352

V802791–022

ELECTRIC HEATERS

UNIT MOUNTED THERMOSTAT LOCATION

DEHUMIDIFICATION CONTROL (OPTIONAL)

FIGURE 14

COMPONENT LOCATION

SIDE FIELD WIRE ENTRANCE

REMOTE THERMOSTAT TERMINAL BLOCK

NDOOR

BLOWER

CIRCUIT BREAKER PANEL & CONTROLS

LOWER CONTROL PANEL

NOTE: The voltage should be measured at the filed

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 16 for wiring diagram. Compatible thermostats are listed in Table 4.

The Climate Control Option G is an electronic, non- programmable manual or auto changeover thermostat. The subbase of the thermostat is factory wired to the front panel of the unit. The humidistat is included. See Figure 17 for wiring diagram. Compatible for use with Bard CS2000 Controller and Energy Recovery Ventilator.

The Climate Control Option E is an electronic, programmable thermostat. The subbase of the thermostat is factory wired to the front panel of the unit. The humidistat is included. See Figure 18 for wiring diagram. Compatible for use with Energy Recovery Ventilator.

NOTE: On option X or G the CS2000 (or other field

provided means to control ventilation) must be used if any of the motorized ventilation options are installed.

Manual 2100-438 Page 14

MIS-1577

LOW VOLTAGE CONNECTIONS

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

LOW VOLTAGE CONNECTIONS

FOR DDC CONTROL

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

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

“Y” 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.

Terminal “1” or pin 4 of P2 is the dehumidification circuit.

Terminal “2” or pin 12 of P2 is the dehumidification circuit. A contact must connect terminals 4 and 5.

“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.

Fan Only Energize G

Cooling Mode Energize Y, G

1st Stage Heating Energize G, W1

2nd State Heating Energize G, W2 (if employed)

Ventilation Energize G, O1

Dehumidification Energize contact

between 1 and 2

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.

NOTE: For total and proper control using DDC, a

total of 6 controlled outputs are required (5 if no ventilation system is installed).

CAUTION

Do not plug in or unplug blower motor connectors while the power is on. Failure to do so may result in motor failure.

Manual 2100-438 Page 15

TABLE 4

WALL THERMOSTATS AND SUBBASE COMBINATIONS

tatsomrehTesabbuSserutaeFtnanimoderP

940-3048

)083-39F1(

050-3048

)5101D4258T(

A/N

elbammargorP

looC/taeH/otuA/launaM

cinortcelEelbammargorP-noN

FIGURE 15

THERMOSTAT PLUG TERMINALS

P2 AND P4

(VIEWED FROM PIN END)

BLOWER MOTOR

LOW VOLTAGE PLUG

(VIEWED FROM PIN END)

Manual 2100-438 Page 16

MIS-1285

FIGURE 16

REMOTE THERMOSTAT WIRING DIAGRAM

“X” THERMOSTAT OPTION

NOTE: On option X or G the CS2000 (or other field

provided means to control ventilation) must be used if any of the motorized ventilation options are installed.

Manual 2100-438 Page 17

FIGURE 17

UNIT MOUNTED THERMOSTAT WIRING DIAGRAM

“G” THERMOSTAT OPTION

NOTE: On option X or G the CS2000 (or other field

provided means to control ventilation) must be used if any of the motorized ventilation options are installed.

Manual 2100-438 Page 18

FIGURE 18

UNIT MOUNTED THERMOSTAT WIRING DIAGRAM

“E” THERMOSTAT OPTION

Manual 2100-438 Page 19

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. 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 (QA361, QA421, QA481 AND QA601 ONLY)

These units are shipped from the factory set to operate at the optional CFM level shown in Table 8. 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.

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.

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 oven one hour may have a negative impact on the bearing due to oil pump out.

Manual 2100-438 Page 20

All three phase scroll compressors used in the QT

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 on 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 air flow 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.

Manual 2100-438 Page 21

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.

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 to the 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.

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.

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 19.

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.

COMMERCIAL ROOM VENTILATOR (Option)

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

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.

Manual 2100-438 Page 22

1. The two mounting screws in the front of the 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 CRV straight out of the unit.

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.

R ENERGY RECOVERY VENTILATOR

QT (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 20.

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.

Manual 2100-438 Page 23

FIGURE 19

FRESH AIR DAMPER REMOVAL

MOUNTING SCREW

MIS-1627

Manual 2100-438 Page 24

FIGURE 20

QERV REMOVAL

MOUNTING SCREWS

FRONT FILL

POWER

CONNECTORS

LOWER BLOWER

ASSEMBLY POWER

CONNECTOR

MIS-1039

Manual 2100-438 Page 25

SEQUENCE OF OPERATION

CRV / QERV 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 450 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.

Dehumidification / Reheat Circuit – Both cooling and heating take precedence over dehumidification.

QERV is energized by applying 24 VAC to the “F” terminal of the low voltage terminal strip on units with “X” climate control option. It is energized by the “A1” terminal of the thermostat on units with “E” climate control option. It is energized by applying power to the “O1” terminal of the low voltage strip on units with “G” climate control options.

OPTIONAL CLIMATE CONTROLS SEQUENCE OF OPERATION

The Climate Control Option G 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 E is an electronic, programmable thermostat. 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.

Reheat Circuit There is a small capillary tube inserted between the reheat coil return line and suction line that will prevent liquid from accumulating in the reheat coil when it is inactive. This drain does not affect the normal operation of the system.

There is a check valve located in the reheat coil return line. It has a soft spring to hold the ball on the seat. This will make the method of checking the ball freedom with a magnet difficult. Refer to Figures 18 and 19 for the location of the check valve and drain back capillary.

When the system is operating in the dehumidification mode the suction pressure will be reduced by 4 to 8 psig and the discharge pressure will be reduced by 19 to 22 psig.

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.

Manual 2100-438 Page 26

FIGURE 21

AIR CONDITIONING MODE

CIRCUIT DIAGRAM

MIS-1200

Manual 2100-438 Page 27

FIGURE 22

DEHUMIDIFICATION MODE

CIRCUIT DIAGRAM

Manual 2100-438 Page 28

MIS-1199

TROUBLESHOOTING

TABLE 5

TROUBLESHOOTING

notpmySesuaCelbissoPkcehCottahWriapeRrokcehCotwoH

rosserpmoC

tonseodrotcatnoc

ezigrene

)gnitaehrognilooc(

gniriwtiucriclortnoC,tinutanoitcennocRrofkcehC

tuokcolrosserpmoC)1

stinuroodtuootnoitcennocRnuR

.C-RneewtebV42dna

C-1LneewtebV42rofkcehC

.lortnocpmuptaehno

nrutC-1LneewtebegatlovonfI

otniaganodnaffotatsomreht

.hctiwserusserphgihteser

.hctiws

erusserphgihssorcakcehC

neposihctiwserusserphgihfI hgihecalper,tesertonlliwdna

.hctiwserusserp

trohsrosserpmoC

noitcetorpelcyc

C-CCneewtebV42rofkcehC

.lortnocpmuptaehnoC-Ydna

repmujC-CCneewtebegatlovonfI

01nihtiwdnalanimretpudeeps

raeppadluohsrewopsdnoces

pudeepsevomeR.C-CCneewteb

.sdnoces01retfarepmuj

evitcefedrotcatnoCliocdetrohsroneporofkcehC

.rotcatnocecalpeR

.gnidniw

rotomroodtuonaF

nurtonseod

evitcefedrotoMrotomdetrohsroneporofkcehC

.rotomecalpeR

.gnidniw

gnitaehrognilooc(

gnirudtpecxe

)tsorfed

roticapacrotoM

evitcefed

kcehC.gnitarroticapackcehC

.roticapacecalpeR

.roticapacdetrohsroneporof

Manual 2100-438 Page 29

FAN BLADE SETTING DIMENSIONS

REFRIGERANT CHARGE

Any service work requiring removal or adjustment in the fan and/or motor area will require that the dimensions in Table 6 be checked and blade adjusted in or out of the motor shaft accordingly.

FIGURE 23

FAN BLADE SETTING

MIS-983

TABLE 6

FAN BLADE DIMENSIONS

ANOISNEMID

LEDOM

142AQ 103AQ 163AQ 124AQ 184AQ 106AQ

)SEHCNI(

057.

The correct system R-22 charge is shown on the unit rating plate. Optimum unit cooling performance will occur with a refrigerant charge resulting in a Super Heat as shown in Table 7. If correct charge is in doubt, recover the refrigerant and recharge per the charge on the unit rating plate.

TABLE 7

SUPER HEAT AT COMPRESSOR

DETAR

LEDOM

142AQ00881-6161-41

103AQ000181-6171-51

163AQ002181-6161-41

124AQ002112-9181-61

184AQ004152-3242-22

106AQ05519-751-31

MFC

DOF°59

ERUTAREPMET

DOF°28

ERUTAREPMET

TABLE 8

INDOOR BLOWER PERFORMANCE

ledoMPSEdetaR

142AQ

103AQ51.8.000010001019007

163AQ51.8.00021000100015711058

124AQ51.8.00021000100015711058

184AQ51.8.00041001100115711058

106AQ02.5.005510521052100410521

NOTE: These units are equipped with a variable speed (ECM) indoor motor that automatically adjust itself to

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

Rated CFM for ducted applications – required for maximum performance rating. To obtain full CFM on models QA36, QA421,

QA481 and QA601 connect the pink jumper wire (provided) to terminal #G2 and #Y on the low voltage terminal block located in the circuit breaker box.

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.

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

Models QA241 – when operating on 2nd stage heating the indoor air will increase to 1000 CFM.

maintain approximately the same rate of indoor air flow in both heating and cooling, dry and wet coil conditions and at both 230/208 or 460 volts.

01.5.0008008007005

PSE.xaM

lanoitpO

MFCdetaR

MFC

suounitnoC

MFC

@MFC

PSE.xaM

.muheD

MFC

Manual 2100-438 Page 30

TABLE 9

COOLING PRESSURE

(ALL TEMPERATURES IN DEGREES F)

NRUTER

LIOCROODTUOGNIRETNEERUTAREPMETRIA

RIA

LEDOM

.PMETERUSSERP

BD57

ediSwoL

BW26

142AQ

BD08

BW76

BD58

ediSwoL

BW27

BD57

ediSwoL

BW26

103AQ

BD08

BW76

BD58

ediSwoL

BW27

BD57

ediSwoL

BW26

163AQ

BD08

BW76

BD58

ediSwoL

BW27

BD57

ediSwoL

BW26

124AQ

BD08

BW76

BD58

ediSwoL

BW27

BD57

ediSwoL

BW26

184AQ

BD08

BW76

BD58

ediSwoL

BW27

BD57

ediSwoL

BW26

106AQ

BD08

BW76

BD58

ediSwoL

BW27

5708580959001501011511

ediShgiH

591

ediShgiH

302

ediShgiH

622

ediShgiH

822

ediShgiH

832

ediShgiH

212

ediShgiH

912

ediShgiH

322

642

ediShgiH

822

732

ediShgiH

742

ediShgiH

652

37 991

87 402

121

312

57 202

08 332

68 042

47 512

97 022

58 822

842

152

342

162

262

122

732

67 442

28 252

142

852

57 562

87 472

47 412

97 912

58 822

67 242

18 842

78 752

57 332

08 932

68 742

27 462

77 072

38 972

27 252

67 062

28 962

47 672

97 382

28 392

67 922

08 432

68 442

77 852

28 462

88 372

752

78 762

87 882

48 892

27 072

77 672

38 582

87 492

38 203

68 313

77 442

28 052

88 952

87 372

38 082

98 092

152

962

28 672

88 682

182

992

97 703

58 813

37 782

87 492

48 403

413

78 223

09 333

97 952

48 462

98 472

97 913

48 692

09 603

87 782

38 492

98 503

57 813

08 723

68 033

47 503

97 213

58 323

58 233

19 143

49 353

08 472

58 082

092

08 303

113

323

97 503

48 213

09 423

67 933

943

163

57 323

133

68 243

98 353

59 263

89 573

982

78 692

39 503

913

68 723

29 933

08 323

343

77 263

88 483

57 343

68 363

39 273

99 283

201 593

403

88 213

49 023

28 533

78 343

39 653

18 143

133

053

29 363

97 583

173

593

09 904

67 363

153

273

78 583

69 373

301 304

701 714

Low side pressure ± 2 psig High side pressure ± 5 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 2100-438 Page 31

Bard QA241D, QA421D, QA301D, QA361D, QA481D Installation Instructions Manual

Specifications and Main Features

Frequently Asked Questions

User Manual