Carrier 09BY006-024 User Manual

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09BY006-024Air-CooledCondenser Units 5 to 20 Tons

Installation, Start-Upand

Service Instructions

CONTENTS

Page

SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . 1

GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-12

Step 1 − Complete Pre-InstallationChecks. . 1 Step 2 − Rig and Place Unit. . . . . . . . . . . . . . . . 7

·RIGGING

·PLACING THE UNIT

·VIBRATION ISOLATION

·POSITIONING THE 09BY UNIT

·VERTICAL DISCHARGE

Step 3 − Install Accessory Low-AmbientKit or Inlet Filter Kit (If Required). . . . . . . . . . . . . . . . 8 Step 4 − Install Rain Drain. . . . . . . . . . . . . . . . . 8 Step 5 − Complete Refrigerant Piping. . . . . . . 8

·GENERAL

·REFRIGERANT LINE SIZING

·PRESSURE RELIEF

·REFRIGERANT RECEIVER

·LIQUID LIFT

·SWEAT CONNECTIONS

·FIELD PIPING

·MANIFOLDING CIRCUITS

·CHECK VALVE

·SERVICE VALVES

Step 6

− Ductwork . . . . . . . . . . . . . . . . . . . . . .

. . 10

· CONDENSER AIR DUCT INSULATION

 

Step 7

Insulate the Unit . . . . . . . . . . . . . . .

. . 11

Step 8

Complete Electrical Connections

. . 11

·GENERAL

·MAIN POWER WIRING

·CONTROL CIRCUIT POWER WIRING

·GENERAL WIRING NOTES

START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

System Evacuation and Dehydration . . . . . . . . 13

Charging Procedure . . . . . . . . . . . . . . . . . . . . . . . 13

Check Operation of Condenser Fan Motor

Controls and Rotation of Fans . . . . . . . . . . . 13

Adjust Fan Speed . . . . . . . . . . . . . . . . . . . . . . . . . 13

SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13-15

Cleaning Condenser Coils . . . . . . . . . . . . . . . . . 13

Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Condenser Fan Adjustment . . . . . . . . . . . . . . . . 13

·TO CHANGE FAN SPEED

·PULLEY ALIGNMENT

·BELT TENSION ADJUSTMENT

·TO CHANGE FAN WHEEL

·TO REPLACE FAN BEARING

MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Air Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Condensate Drain . . . . . . . . . . . . . . . . . . . . . . . . . 15

TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . 16

START-UP CHECKLIST . . . . . . . . . . . . . . . .CL-1,CL-2

SAFETY CONSIDERATIONS

Installing, starting up, and servicing air-conditioningequipment can be hazardous due to system pressures, electrical components, and equipment location.

Only trained, quali®ed installers and service mechanics should install, start-up,and service this 09BY equipment (Fig. 1).

When working on the equipment, observe precautions in the literature and on tags, stickers, and labels attached to the equipment.

Follow all safety codes. Wear safety glasses and work gloves. Keep quenching cloth and ®re extinguisher nearby when brazing. Use care in handling, rigging, and setting bulky equipment.

ELECTRIC SHOCK HAZARD

Separate power sources (main and control power circuits) are used for these units. Be sure both main and control power circuits are disconnected before servicing.

GENERAL

The 09BY air-cooledcondenser is a remoteair-cooledcondenser designed to be used with the 50BZ vertical packaged units. See Table 1. Air¯ow is horizontal, both into and out from the same face of the unit. The unit is designed to be mounted indoors in a window, through the wall inhigh-risebuildings, or on the wall on the building exterior. See Fig. 2 for typical applications. Ductwork is not needed, but may be added easily if required by the application. Air¯ow is provided by centrifugal fans with an adjustable belt drive to meet varying static requirements. Units may also be matched with other compressor and evaporator combinations. Contact your local representative for more details.

Check space requirements, service clearances, ¯oor strength, location of piping, size of power supply, and location of ductwork (if used) before installing. See Fig. 3 for unit dimensions and Table 2 for unit operating weights.

INSTALLATION

Step 1 Ð Complete Pre-InstallationChecks Ð

Examine unit for damage incurred during shipment. File claim immediately with transit company if damage is found. Check the shipment for completeness. Verify that the nameplate electrical requirements match the available power supply.

Manufacturer reserves the right to discontinue, or change at any time, speci®cations or designs without notice and without incurring obligations.

Book

2

4

 

PC 111

Catalog No. 530-969

Printed in U.S.A.

Form 09BY-2SI

Pg 1

9-96

Replaces: 09BY-1SI

Tab

4a

4a

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Fig. 1 Ð 09BY Unit (008-014Shown)

2

HANGER

TO OUTSIDE

RODS

 

DISCHARGE

 

DUCT

 

09BY

 

INLET

 

DUCT

 

TO RAIN DRAIN

INSULATE IF THROUGH

CONDITIONED SPACE

(REQUIRED IF RAIN

 

WILL ENTER UNIT)

 

TO REFRIGERANT

 

PIPING COMPRESSOR/

 

EVAPORATOR UNIT

 

09BY IN REMOTE APPLICATION WITH DUCTWORK (Shown Suspended from Ceiling)

 

 

 

OUTSIDE

 

 

 

WALL

 

 

 

OUT

 

 

 

WALL

 

 

 

LOUVERS

 

 

09BY

(FIELD

 

50BZ

SUPPLIED)

 

 

 

IN

 

POWER

 

 

 

CONNECTION

 

 

 

 

 

HEIGHT AS

 

 

 

REQUIRED

 

 

TO RAIN

FOR WINDOW

 

 

DRAIN

OR WALL

 

FLOOR

(REQUIRED

OPENING

LEGEND

IF RAIN WILL

 

STAND*

 

ENTER UNIT)

 

 

 

 

Refrigerant Connection

 

Field-SuppliedRefrigerant Piping

09BY DIRECT CONNECTION TO 50BZ UNIT

*Field-SuppliedFloor Stand (Height to Match Wall Opening).

Fig. 2 Ð Mounting Applications

3

09BY DIMENSIONS (English)

DIMENSION

006

008

012

014

016,024

(Ft-in.)

(Ft-in.)

(Ft-in.)

(Ft-in.)

(Ft-in.)

 

A

2-111¤2

3- 613¤16

3- 613¤16

3- 613¤16

5- 0

B

1- 711¤16

1-115¤8

1-115¤8

1-115¤8

2- 97¤16

C

4- 07¤16

4- 8

5- 31¤2

5-11

7- 69¤16

D

1-111¤4

2- 39¤16

2- 39¤16

2- 39¤16

2-11

E

0-111¤8

1- 2

1- 2

1- 2

1- 73¤4

F

0- 63¤16

0- 57¤8

0- 711¤16

0-117¤16

1-1111¤16

G

1- 15¤16

1- 35¤8

1- 47¤8

1- 47¤8

2- 0

H

0- 95¤16

0-11

0-11

0-11

1- 31¤2

J

0- 3

0- 3

0- 3

0- 3

0- 27¤16

K

3- 51¤8

4- 01¤4

4- 75¤8

5- 31¤4

7- 01¤4

L

1-105¤8

2- 3

2- 3

2- 3

2- 9

M

0- 19¤16

0- 19¤16

0- 19¤16

0- 19¤16

0- 31¤8

N

0- 6

0- 7

0- 7

0- 7

0-10

P

2- 5

2- 9

3- 2

3- 7

4- 6

R

1- 2

1- 5

1- 5

1- 5

2- 0

09BY DIMENSIONS (SI)

DIMENSION

006

008

012

014

016,024

(mm)

(mm)

(mm)

(mm)

(mm)

 

A

902

1087

1087

1087

1526

B

500

600

600

600

850

C

1231

1422

1613

1804

2300

D

590

701

701

701

911

E

282

357

357

357

502

F

156

150

195

290

347

G

338

396

428

428

610

H

236

280

318

318

394

J

76

76

76

76

63

K

1044

1226

1413

1607

2140

L

575

686

686

686

838

M

40

40

40

40

80

N

152

178

178

178

254

P

737

838

965

1092

1372

R

356

432

432

432

610

Fig. 3 Ð Base Unit Dimensions

4

CORNER WEIGHTS (Lb)

UNIT

A

B

C

D

SIZE

 

 

 

 

006

55

73

59

42

008

61

89

73

44

012

86

114

93

64

014

107

142

114

78

016

123

159

127

91

024

132

195

158

95

NOTES:

UNIT

APPROX. SHAFT LENGTH

1. Operational clearances are 0 in. on all sides of the unit.

SIZE

(in.)

2. Service clearances are 0 in. (minimum) on the top, rear, and front

of the unit. A minimum of 3 ft service clearance is required on the

006

41.0

unit right side, and a 3 ft clearance is recommended on the left

 

 

008

47.0

side (2 ft is the minimum). One side of the unit (either right, left, or

012

51.0

rear) should have the following minimum clearance for removal of

the blower shaft:

014

51.0

 

016

55.5

 

024

73.0

 

 

 

Fig. 3 Ð Base Unit Dimensions (cont)

5

Table 1 Ð Condenser Unit Application

UNIT

 

 

 

09BY

 

 

50BZ

006

008

012

 

014

016

024

006

S

 

 

 

 

 

 

008

 

S

 

 

 

 

 

012

 

O

S

 

 

 

 

014

 

 

O

 

S

 

 

016

 

 

 

 

O

S

 

024

 

 

 

 

 

O

S

LEGEND

S Ð Standard

O Ð Optional

NOTE: Contact your local representative for use with reciprocating air-cooledchillers and othercompressor-bearingunit combinations.

Table 2 Ð Physical Data

UNIT 09BY

006

008

012

 

014

016

024

NOMINAL TONS

5

71¤2

10

 

12

15

20

OPERATING WEIGHT (Lb)

267

357

441

 

471

837

970

REFRIGERANT

 

 

 

R-22

 

 

Number of Circuits

1

1

2

 

2

2

3

Minimum Charge (Lb/Ckt)

6

11

6

 

6/11

11

11

Optimum Charge (Lb/Ckt)

8.38

14.5

8.38

 

8.38/14.5

14.5

14.5

Storage Volume Ft3/Ckt)

0.31

0.47

0.31

 

0.31/0.47

0.47

0.47

Holding Charge

 

 

Nitrogen

Charge

 

 

CONDENSER FAN

 

 

Belt Drive, Centrifutal

 

 

Nominal Air¯ow (Cfm)

3000

4500

6000

 

7200

9000

12,000

Cfm Range

2000-4500

3400-6400

4500-7000

 

6000-7600

6700-9750

7500-11,000

Quantity

2

2

2

 

2

2

2

Size (in.)

8.8 × 8.8

11.0 × 11.0

11.0 × 11.0

 

11.0 × 11.0

12.4 × 12.4

14.0 × 14.0

Pulley Size (in.)

511¤16

75¤8

65¤8

 

611¤16

10

1311¤16

Motor Pulley Range (in.)

43¤16-51¤2

43¤16-51¤2

4-5

 

4-5

43¤4-6

53¤8-65¤8

Rpm Range

1365-1566

960-1260

1106-1455

 

1045-1306

840-1050

686-847

Maximum Fan Rpm

1705

1365

1365

 

1365

1210

955

Belt Quantity...Size

1...A41

1...B46

1...B45

 

2...A45

2...B88

3...B90

Pulley Center Line Distance (in.)

11.2/12.6

13.6/15.0

13.6/15.0

 

13.6/15.0

32.6/33.8

30.0/30.7

Fan Shaft (mm)*

20

25

25

 

25

25

30

Motor Shaft (in.)

7¤8

11¤8

11¤8

 

11¤8

11¤8

13¤8

Motor Hp...Type

2...TEFC²

3...TEFC

3...TEFC

 

5...TEFC

5...TEFC

10...TEFC

Motor Frame Size

145T

182T

182T

 

184T

184T

215T

Maximum Motor Hp

3

5

5

 

5

5

10

CONDENSER COIL

 

3¤8-in.OD Enhanced Copper Tube, Aluminum Fin

 

Rows...Fins per in.

4...14

5...14

5...14

 

5...14

4...15

5...15

Face Area (sq ft)

6.33

8.75

10.12

 

11.45

19.38

19.38

CONNECTIONS

 

 

 

 

 

 

 

Hot Gas

 

 

 

 

 

 

 

Quantity

1

1

2

 

2

2

3

Size (in.)

1¤2

1¤2

1¤2

 

1¤2

1¤2

1¤2

Liquid Line

 

 

 

 

 

 

 

Quantity

1

1

2

 

2

2

3

Size (in.)

1¤2

1¤2

1¤2

 

1¤2

1¤2

1¤2

Condensate Drain (in.)

 

 

 

3¤4

FPT

 

 

CONTROLS

 

24-VControl Fan Contactor Provided in Unit

 

 

 

 

 

 

 

 

 

*Metric size.

²TEFC Ð Totally Enclosed Fan Cooled.

NOTE: Optimum charge is based on 15° F subcooling. Minimum charge is based on 5° F subcooling.

6

Step 2 Ð Rig and Place Unit

RIGGING Ð The 09BY units are mounted on skids. Leave the unit on the skid until it is in the ®nal position. While on the skid, the unit can be rolled, dragged or forklifted; do not apply force to the unit. Use a minimum of 3 rollers when rolling, and raise from above to remove the skid when unit is in the ®nal position. See Fig. 4 for rigging details.

PLACING THE UNIT Ð Locate the condenser where an adequate supply of outdoor air is available for the unit inlet.

NOTE: Unit inlet and discharge may both be ducted to the outside.

Either provide inlet ®lters to protect the condenser coils, or locate the condenser in an area free from airborne dirt or other foreign material which could clog the coils. For multiple units, allow service clearance (Fig. 3) between units, and locate unit discharges and inlets so that recirculation of condenser air is prevented. Placement area must be level and strong enough to support operating weight of the unit (Table 2). Bolt unit securely in place when unit is positioned and leveled. Fasteners for mounting unit are ®eld supplied.

NOTE: It will be necessary to drill holes in the unit base or side wall where bolts are to be mounted.

IMPORTANT: Use care if rain will enter the unit (if unit is located fully or partially outdoors). DO NOT drill through the unit drain pan or leaks will result.

VIBRATION ISOLATION Ð Units mounted in or above occupied spaces should employ some type of vibration isolation. For units that are ¯oor mounted, rubber pads may be located under each unit corner or unit may be mounted on rubber shear isolators or on spring isolators. Unit may be supported by its 4 corners, or a ®eld-suppliedsupport rail may be used for each side. Size isolators with the corner weights shown in Fig. 3. Units may also be suspended from above. See Positioning the 09BY Unit section below and Fig. 5 for recommended support and isolator mounting.

Ductwork attached to the condenser should be isolated from the unit with a ¯exible collar on the inlet and outlet ducts.

SPREADER BAR

SUPPORTS

UNDER SKID

POSITIONING THE 09BY UNIT Ð Refer to notes in Fig. 3 for typical service clearances.

To suspend the unit, use 4, ®eld-supplied,1¤2-in.diameter (or larger) threaded rods. Mount 2 heavy channels under the entire width of the unit, allowing them to protrude beyond the width of the unit so that supporting rods can be installed on the channel ends. Attach minimum1¤2-in.threaded supporting rods(®eld-supplied)to channels through a rubber or spring isolator. See. Fig. 5.

DO NOT use rods smaller than 1¤2-in.diameter. Smaller rods may not be strong enough to support the unit. Rods must be securely anchored in ceiling joists.

Use a double hex nut when attaching hanger rods to brackets. A single nut could loosen from vibration of the unit. Pitch unit approximately 1¤4-in.toward drain in both directions (lengthwise and widthwise) to aid in condensate and/or rain removal.

Before sliding unit into ®nal position, check for clearance to access panels and service area to install piping.

VERTICAL DISCHARGE Ð The 09BY units can be mounted on a ®eld-suppliedstand as shown in Fig. 6 for vertical discharge. Also, provide a rain drain on the back of the unit.

1/2" THREADED 09BY ROD*

UNIT

PROTRUDING

CHANNEL END*

 

RUBBER

 

ISOLATOR*

 

WASHER*

BRACKET*

DOUBLE HEX NUT*

 

FIELD SUPPLIED

*Field supplied.

Fig. 5 Ð Threaded Rod Installed in Bracket

Fig. 4 Ð Unit Rigging

Fig. 6 Ð 09BY Vertical Discharge

7

Step 3 Ð Install Accessory Low-AmbientKit or Inlet Filter Kit (If Required) ÐIf the unit will be operated with inlet air to the condenser below 50 F, a lowambient damper may be required. The low-ambient kit controls head pressure by discharge dampers on the condenser fan. The dampers are actuated by a refrigerant-operated piston connected to the discharge line of the condenser. If lowambient accessory will be used, install it at this time (before ®nal refrigerant and ductwork connections are made).

An accessory ®lter rack may also be installed on the condenser air inlet to help keep the coil clean. This ®lter rack should be installed before the ductwork is attached to the unit, and before unit is mounted against a wall louver (if required in your speci®c application).

Refer to installation instructions provided with the accessories for installation details.

Step 4 Ð Install Rain Drain (See Fig. 7)

IMPORTANT: A rain drain connection MUST BE USED if any possibility exists of rain water entering the unit.

The 09BY unit provides a choice of 2 drain locations. Rain drain connection can be made on either side of the unit. Block whichever drain is not being used, but DO NOT BLOCK BOTH drain locations.

NOTE: Dimensions in [ ] are in millimeters.

Fig. 7 Ð Rain Drains

A drain kit is provided (shipped in the fan section). This kit consists of PVC drain ®ttings to adapt to ®eld-suppliedthreaded pipe. Make connections through the unit side panel. Some applications may require connection to either galvanized steel or copper drain pipe; consult local code requirements for details.

If unit is located inside the building, the drain connection near the refrigerant piping can be used for external drainage. Run drain connection to a trapped drain, and plug unused connection.

IMPORTANT: NEVER use pipe smaller than 3¤4 in. in the drain run.

For vertical discharge units, provide a rain drain on the back of the unit.

Pitch drain pipe downward at a slope of at least 1¤4-in.per ft for proper drainage. Provide tees plugged on one side for cleanouts. Leave clearance for servicing, and observe all local sanitary codes.

Refer to Carrier System Design Manual for additional piping details.

Step 5 Ð Complete Refrigerant Piping

GENERAL Ð All ®eld leak and pressure testing should be done in accordance with local code requirements. If a local code does not exist, use ASHRAE (American Society of Heating, Refrigeration and Air Conditioning Engineers) Standard 15, Safety Code for Mechanical Refrigeration.

For leak testing procedures, refer to the Carrier ``Refrigerant Service Techniques'' book, Form SFT-01.

For any parts that need to be removed, use a mini tubing cutter. Perform phos-copperbrazing on all®eld-madeconnections while protecting adjacent joints from heat.

REFRIGERANT LINE SIZING Ð Sizing depends on length of lines between various sections of the refrigerant system. Consider the amount of liquid lift and drop in the system as well as proper compressor oil return. Consult Carrier System Design Manual, Part 3, or Carrier E20-IIt Refrigerant Piping Computer Program for proper piping sizes and design.

PRESSURE RELIEF Ð The ASHRAE Standard 15, Safety Code for Mechanical Refrigeration states: ``Every refrigerating system shall be protected by a pressure relief device or some other means designed to safely relieve pressure due to ®re or other abnormal conditions.'' Since 09BY condensers do not have pressure relief devices, one must be ®eld supplied and installed either before the liquid line service valve or inside the 09BY unit. Each circuit must have its own pressure relief.

If desired, the pressure relief requirement can also be satis®ed by installing a fusible plug in the liquid line. To do so, install a tee in the liquid line with a 1¤4-in.NPT ®tting on the tee side, and install a fusible plug (part no. EK02KK105 or similar). The temperature rating of the fusible plug should be between 205 F and 220 F (96 C and 104 C). If a service valve is used on the liquid line, be sure that both the piping system and the condenser are protected for relief if all service valves are closed. Note that if the condenser is located indoors, requirements for venting the fusible plug to the outdoors may apply. Consult local code requirements.

REFRIGERANT RECEIVER Ð A refrigerant receiver is not furnished with 09BY condensers and isnot recommended for normal applications.

8

LIQUID LIFT Ð Amount of liquid lift available before refrigerant ¯ashing occurs depends on amount of liquid subcooling in the system.

All 09BY condensers have positive subcooling when applied with optimum charge. With subcooling, it is possible to overcome an appreciable pressure drop and/or static head pressure (due to elevation of the liquid metering device above the condenser when condenser is below evaporator coil).

When 09BY condensers are applied with minimum charge, they do not provide positive subcooling. If subcooling is required, it must be obtained by external means such as a liquid suction interchanger.

It is recommended that the evaporator be either at the same level as the condenser or lower than the condenser when minimum is used.

SWEAT CONNECTIONS Ð Connections are made inside the unit, and piping may enter from either side. For ease in brazing, it is recommended that all internal solder joints be made before unit is placed in its ®nal position. See 50BZ (or other compressor-bearingunit) base unit installation instructions for proper line sizing and piping procedures.

FIELD PIPING Ð For 09BY remote installation, select pipe sizes according to length from Table 3.

Use refrigerant grade piping. If tubing size is other than unit connection sizes, use adapter ®ttings.

Refer to 50BZ (or other compressor-bearingunit) base unit installation instructions to determine refrigerant charge adjustment for remote and special piping applications.

NOTE: When installing 09BY units in systems, add charge for other components (i.e., ®lter drier, moisture indicator, etc.) to determine system charge quantity. Record charge.

MANIFOLDING CIRCUITS Ð The 09BY units with 2 or 3 circuits (012-024units) may be manifolded together to be used as asingle-circuitcondenser. See Fig. 8 for a typical connection of a2-circuitcondenser for use on one circuit.

Three-circuitunits (024) may be manifolded in any combination of 1, 2, or 3 circuits per compressor. When manifolding circuits, NEVER CONNECT TWO SEPARATE COMPRESSOR EVAPORATOR CIRCUITS TOGETHER ON THE SAME CONDENSER CIRCUIT. Pipe sizes for the combined circuit should be no smaller than the sizes shown in Table 3.

Fig. 8 Ð Typical 2-CircuitCondenser Manifolded

For Single-CircuitUse

Table 3 Ð Minimum Refrigerant Line Size Data

 

 

 

 

 

 

 

 

 

LENGTH OF PIPE

 

 

 

 

 

 

 

UNIT

 

0 TO 15 FT

 

 

16 TO 25 FT

 

26 TO 50 FT

 

51 TO 75 FT

76 TO 100 FT

09BY

Qty

Hot Gas

 

Liquid

Qty

 

Hot Gas

Liquid

Qty

 

Hot Gas

Liquid

Qty

 

Hot Gas

Liquid

Qty

Hot Gas

Liquid

 

Line

 

Line

 

Line

Line

 

Line

Line

 

Line

Line

Line

Line

 

 

(in.)

 

(in.)

 

 

(in.)

(in.)

 

 

(in.)

(in.)

 

 

(in.)

(in.)

 

(in.)

(in.)

006

1

1¤2

 

1¤2

1

 

5¤8

1¤2

1

 

7¤8

1¤2

1

 

7¤8

1¤2

1

7¤8

1¤2

008

1

1¤2

 

1¤2

1

 

7¤8

1¤2

1

 

7¤8

1¤2

1

 

7¤8

1¤2

1

7¤8

5¤8

012*

2

1¤2

 

1¤2

2

 

5¤8

1¤2

2

 

7¤8

1¤2

2

 

7¤8

1¤2

2

7¤8

1¤2

1

7¤8

 

1¤2

1

 

7¤8

1¤2

1

 

11¤8

5¤8

1

 

11¤8

5¤8

1

11¤8

5¤8

 

 

 

 

 

014*

2

1¤2

 

1¤2

2

 

7¤8

1¤2

2

 

7¤8

1¤2

2

 

7¤8

1¤2

2

7¤8

5¤8

1

7¤8

 

1¤2

1

 

7¤8

5¤8

1

 

11¤8

5¤8

1

 

11¤8

5¤8

1

11¤8

7¤8

 

 

 

 

 

016*

2

1¤2

 

1¤2

2

 

7¤8

1¤2

2

 

7¤8

1¤2

2

 

7¤8

1¤2

2

7¤8

5¤8

1

11¤8

 

5¤8

1

 

11¤8

5¤8

1

 

11¤8

5¤8

1

 

11¤8

7¤8

1

13¤8

7¤8

 

 

 

 

 

024*

2 or 3

1¤2

 

1¤2

2 or 3

 

7¤8

1¤2

2 or 3

 

7¤8

1¤2

2 or 3

 

7¤8

1¤2

2 or 3

7¤8

5¤8

1

11¤8

 

5¤8

1

 

11¤8

5¤8

1

 

11¤8

7¤8

1

 

13¤8

7¤8

1

13¤8

7¤8

 

 

 

 

 

*Circuits may be manifolded to a single compressor. Multiple condenser circuits should be on the same evaporator. See Manifolding Circuits section on this page for details.

NOTES:

1.A standard number of elbows and ®ttings have been considered in sizing piping (approximately 20% loss). Special applications may require different minimum refrigerant line sizes. Contact your local representative for assistance as required.

2.Line sizes are in inches.

3.A hot gas line check valve is recommended when the 09BY condenser is installed above the compressor. Pressure loss through recommended hot gas line check valve has been included in 16 to 100 ft length applications.

9

CHECK VALVE Ð When the 09BY condenser is installed with the condenser located above the compressor evaporator, it is recommended that a ®eld-suppliedcheck valve be installed on the hot gas discharge line. This prevents refrigerant which condenses in the discharge line during the off cycle from draining back into the compressor. Install the check valve at the compressor line before the line goes up to the condenser. Check valve part no. EC37BP183 or similar may be used.

SERVICE VALVES Ð Service valves are not factory installed on the 09BY units. If isolation of the refrigerant charge in the condenser from the unit or the piping system is desired, it is recommended that ®eld-suppliedservice valves be installed in the discharge and liquid line inside the 09BY condenser. A Schrader port connection is also recommended on the liquid and discharge line at the condenser for ease in troubleshooting when the condenser is located out of sight from the compressor evaporator unit.

Step 6 Ð Ductwork Ð The 09BY unit is designed for use either with or without ductwork or rain louvers. If either is used, care must be taken to eliminate air recirculation. Recirculation can be minimized by blocking the front discharge and discharging through an extension elbow. When properly designed, hinged discharge louvers can be applied to ductwork and to the condenser air discharge. Fixed rain louvers over discharge outlets can cause excessive recirculation and nuisancehigh-pressureswitch cutouts. Obstructions closer than 10 ft to the discharge air pattern can cause signi®cant recirculation. See Fig. 9 for ductwork installation to prevent recirculation of air.

If ductwork is used from standard discharge openings and another bird screen is provided, remove factory-suppliedscreen to reduce static pressure loss. Units09BY006-014have afactory-installed¯ange to connect ductwork to the condenser air inlet. Units 09BY016 and 024 are provided with ¯anges taped inside the unit for shipping. To attach the duct to the unit inlet, mount the ¯ange by removing the screws that hold the condenser coil. Insert the ¯ange and replace the screws. See Fig. 10. Take care not to puncture the coil when removing and installing screws.

CONDENSER AIR DUCT INSULATION Ð The condenser air duct must be insulated on indoor installations to prevent moisture condensation on the unit panels during cold weather. Insulate as follows:

1.If metal ductwork is used, insulation may be applied on the inside of the duct. This installation should be extended to cover the inside of the 09BY duct ¯anges.

It is necessary to insulate the inside of the ducts at the duct ¯anges to reduce heat loss from the metal cabinet by conduction through the duct ¯anges and into the cold duct. Interior insulation allows the metal duct to approach room temperature. It also prevents condensation from forming and collecting under the insulation which will occur with exterior duct insulation.

NOTE: Fiberglass duct board may also be used if permitted by local codes.

2.If insulation is applied to the outside of the metal duct, the inside must be insulated for a length of 10 in. from the unit (including the duct ¯anges) or up to the ¯exible duct vapor barrier on the outside, which must be tightly sealed to prevent condensation under the insulation.

DIMENSIONS (in.)

UNIT

A

B

C

D

E

F

G

09BY

 

 

 

 

 

 

 

006

24

111¤8

6

171¤8

161¤8

223¤8

411¤8

008

24

14

6

20

161¤8

267¤8

481¤4

012

24

14

6

20

161¤8

267¤8

555¤8

014

30

14

6

20

303¤8

267¤8

631¤4

016

30

20

6

26

303¤8

363¤8

859¤16

024

30

20

6

26

303¤8

367¤8

857¤16

Fig. 9 Ð Condenser Ductwork Details

10