Bard HAC481-BD040 User Manual

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INSTALLATION INSTRUCTIONS

SPLIT AIR CONDITIONER

OUTDOOR SECTION

Models: HAC181-AD040HAC241-AD040HAC301-AD040HAC361-AD040HAC421-AD040HAC481-AD040HAC481-BD040HAC601-AD040HAC601-BD040

FOR USE WITH: MATCHING INDOOR BLOWER COIL UNITS AND MATCHING ADD ON COIL UNITS ONLY

Bard Manufacturing Company

Manual No.:

2100-346C

Bryan, Ohio 43506

Supersedes:

2100-346B

Since 1914 . . . Moving ahead just as planned.

File:

Volume 1, Tab 4

Date:

09-04-02

 

© Copyright 2002

CONTENTS

Split Air Conditioner General Information .........

1

Split Air Conditioner Model Nomenclature ...............

1

Application and Location ....................................

4

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

4

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

4

Application ...............................................................

4

Location ...................................................................

4

Mounting Unit Outside on Slab .................................

4

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

4

Installing Refrigerant Tubing .....................................

4

Sweat Style Tubin Connections: Sweat

 

Indoor Unit and Sweat Outdoor Unit ........................

5

Field Fabricated Tubing Connections:

 

Quick Connect Indoor Unit and Sweat

 

Outdoor Unit Using CTO Kit .....................................

6

FIGURES

 

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

1

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

4

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

5

Figure 4 ....................................................................

5

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

12

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

12

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

12

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

13

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

14

Wiring Instructions ..............................................

9

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

9

Control Circuit Wiring ...............................................

9

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

9

Optional Controls ...................................................

12

Installation Instructions – CMA-5 ............................

12

Installation Instructions – CMA-6 ............................

12

Installation Instructions – CMA-10A ........................

13

Installation Instructions – CMA-13A ........................

14

Charging Instructions ........................................

15

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

15

System Start-Up(Indoor Units

 

without Expansion Valves .......................................

15

Service ................................................................

17

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

17

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

17

Pressure Tables ................................................

20-23

TABLES

 

Table 1 .....................................................................

1

Table 2 .....................................................................

2

Table 3 .....................................................................

3

Table 4 .....................................................................

6

Table 6 .....................................................................

9

Table 7 .....................................................................

9

Table 8 .....................................................................

9

Table 9 ...................................................................

15

Table 10 .................................................................

15

Table 11 .................................................................

16

Table 12 .................................................................

17

Table 13 .................................................................

20

Table 14 .................................................................

20

Table 15 .................................................................

21

Table 16 .................................................................

21

Table 17 .................................................................

22

Table 18 .................................................................

22

Table 19 .................................................................

23

SPLIT AIR CONDITIONER MODEL NOMENCLATURE

HAC 36 1 – A DXXX

Customized Unit Code

Electrical Characteristics

A – 230/208-60-1

B – 230/208-60-3

Modification Code

Capacity – 3 Ton or approx. 36,000 BTU

Basic Model Number

FIGURE 1

UNIT DIMENSIONAL DRAWING

W

ALTERNATE

ELECTRICAL

ENTRANCES

ON BACK

H

HIGH VOLTAGE

ENTRANCE

LOW VOLTAGE

ENTRANCE

C

REFRIGERANT

SHUTOFF

VALVES

B

F

D

A

E

MIS-1789

TABLE 1

UNIT DIMENSIONS

 

 

"W"

"D"

"H"

 

 

 

 

 

 

 

Model No.

Width

Depth

Height

A

B

C

E

F

 

 

HAC181

40.00

15.00

26.00

5.125

20.188

4.00

7.125

24.188

 

 

HAC241

 

 

 

 

 

 

 

 

 

 

 

 

HAC301

45.00

15.00

26.00

5.125

25.188

4.00

7.125

29.188

 

 

HAC361

 

 

 

 

 

 

 

 

 

 

 

 

HAC421

 

 

 

 

 

 

 

 

 

 

HAC481

50.00

15.00

32.00

6.625

28.688

4.00

8.625

32.688

 

 

HAC601

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Manual 2100-346

Page 1

TABLE 2

RATED CFM AND AIR FLOW DATA

(WET COIL – COOLING)

 

 

Rated Airflow

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Condensing

Evaporator

 

Pressure

Rated

Motor

Recommended

System

 

Unit

Coil

CFM

Speed

Orifice

 

Drop H2O

E.S.P.

Air Flow Range

 

Model No.

Model No.

 

Tap

Required

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A30AS-A

650

.15

 

 

550

- 715

.052

*

HAC181-A

S24AS-A

650

.24

 

 

550

- 715

.052

*

 

BC24B

650

 

.35

Med

550

- 715

.052

*

 

 

 

 

 

 

 

 

 

 

 

A30AS-A

800

.18

 

 

700

- 910

.055

*

HAC241A

S24AS-A

780

.30

 

 

680

- 890

.055

*

 

BC24B

750

 

.20

High

700

- 910

.055

 

 

 

 

 

 

 

 

 

HAC301-A

A36AS-A

1,000

.20

 

 

850 - 1,175

.063

*

BC36B

1,000

 

.30

Low

850 - 1,175

.063

*

 

 

 

 

 

 

 

 

 

 

 

HAC361-A

A37AS-A

1,100

.18

 

 

920 - 1,220

.069

*

BC36B

1,100

 

.27

High

920 - 1,220

.069

*

 

 

 

 

 

 

 

 

 

 

 

 

 

A42AS-A

1,400

.30

 

 

1,270

- 1,550

.078

*

HAC421-A

A48AS-A

1,500

.26

 

 

1,250

- 1,625

.078

BC36B

1,200

 

.15

High

1,020

- 1,320

.078

*

 

 

 

BC60B

1,500

 

.38

Low

1,250

- 1,625

.078

*

 

 

 

 

 

 

 

 

 

 

HAC481 -A,-B

A61AS-B

1,700

.28

 

 

1,450

- 1,875

.081

*

BC60B

1,700

 

.25

Low

1,450

- 1,875

.081

*

 

 

 

 

 

 

 

 

 

 

HAC601-A,-B

A61AS-B

1,760

.30

 

 

1,500

- 1,950

.092

 

BC60B

1,800

 

.28

High

1,525

- 1,975

.092

 

 

 

 

 

 

 

 

 

 

 

QMeasured across the evaporator coil assembly, including drain pan.

RExternal static pressure available for the duct system --supply and return. All blower coils have multispeed motors, and value shown is at the recommended rated speed. Consult specification air flow charts with the blower coil units for complete information at other speeds.

*IMPORTANT INFORMATION

Proper sized orifice is not factory installed in indoor section. Proper orifice size is shipped with outdoor unit packaged with its installation instructions for indoor sections listed on this page. The orifice must be replaced with the proper system orifice shown above in Table 2.

For other evaporator coil models not listed, see indoor coil installation instructions for proper orifice information.

Manual 2100-346

Page 2

Page

Manual

3

346-2100

TABLE 3

SPECIFICATIONS

MODELS

HAC181-A

HAC241-A

HAC301-A

HAC361-A

HAC421-A

HAC481-A

HAC481-B

HAC601-A

HAC601-B

 

 

 

 

 

 

 

 

 

 

Electrical Rating (60HZ / V/ PH)

230/208-1

230/208-1

230/208-1

230/208-1

230/208-1

230/208-1

230/208-3

230/208-1

230/208-3

 

 

 

 

 

 

 

 

 

 

Operating Voltage Range

197 - 253

197 - 253

197 - 253

197 - 253

197 - 253

197 - 253

187 - 253

197 - 253

187 - 253

 

 

 

 

 

 

 

 

 

 

Minimum Circuit Ampacity

15

15

19

20

25

26

17

35

21

 

 

 

 

 

 

 

 

 

 

¬ Field Wire Size

14

14

12

12

10

10

12

8

10

 

 

 

 

 

 

 

 

 

 

! Delay Fuse Maximum or Circuit Breaker

20

20

30

30

40

45

25

60

35

Total Unit Amps 230/208

7.9 / 8.6

10.2 / 11.4

13.4 / 14.0

14.5 / 15.8

19.1 /19.6

19.4 / 21.0

12.8 / 13.4

22.7 / 26.7

15.3 / 17.2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

COMPRESSOR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Volts 230/208

230/208

230/208

230/208

230/208

230/208

230/208

230/208

230/208

230/208

Rated Load Amps

6.8 / 7.5

9.1 / 10.3

12.3 / 12.9

13.4 / 14.7

17.6 / 18.1

17.9 / 19.5

11.3 / 11.9

21.2 / 25.2

13.8 / 15.7

 

 

 

 

 

 

 

 

 

 

Branch Circuit Selection Current

8.6

10.3

13.7

14.7

18.1

19.5

12.6

26.3

15.7

Lock Rotor Amps 230/208

49/49

56/56

75/75

82/82

105/105

102/102

91/91

135/135

150/150

 

 

 

 

 

 

 

 

 

 

Crankcase Heat

None

None

None

None

Immersion

Immersion

Immersion

None

None

Type

Type

Type

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FAN MOTOR and CONDENSER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Fan Motor – HP / RPM

1/6 – 825

1/6 – 825

1/6 – 825

1/6 – 825

1/4 – 825

1/4 – 825

1/4 – 825

1/4 – 825

1/4 – 825

Fan Motor – Amps

1.1

1.1

1.1

1.1

1.5

1.5

1.5

1.5

1.5

 

 

 

 

 

 

 

 

 

 

Fan – Diameter

20"–2,000

20"–2,000

20"–2,000

20"–2,000

24"–2,600

24"–2,600

24"–2,600

24"–2,600

24"–2,600

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SWEAT CONNECT SYSTEM

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Suction Line Size ID

5/8"

3/4"

3/4"

3/4"

7/8"

7/8"

7/8"

7/8"

7/8"

Liquid Line Size ID

1/4"

3/8"

3/8"

3/8"

3/8"

3/8"

3/8"

3/8"

3/8"

 

 

 

 

 

 

 

 

 

 

Factory Change R-22Oz.

73 oz.

79 oz.

84 oz.

96 oz.

102 oz.

155 oz.

155 oz.

153 oz.

153 oz.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SHIPPING WEIGHT – LBS.

155

155

180

180

250

250

250

255

255

 

 

 

 

 

 

 

 

 

 

APPLICATION and LOCATION

GENERAL

These instructions explain the recommended method to install the air cooled remote type condensing unit, the interconnecting refrigerant tubing and the electrical wiring connections to the unit.

The condensing units are to be used in conjunction with the matching evaporator coils or evaporator blower units for comfort cooling applications as shown in the specification sheet.

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 “Starting Procedure” and any tags and/or labels attached to the equipment.

SHIPPING DAMAGE

Upon receipt of equipment, the carton should be checked for external signs of shipping damage. If damage is found, the receiving part must contact the last carrier immediately, preferably in writing, requesting inspection by the carrier’s agent.

APPLICATION

Size of unit for a proposed installation should be based on heat loss calculation and air duct sizing made according to methods of Air Conditioning Contractors of America. The air duct should be installed in accordance with the Standards of the National Fire Protection Association for the Installation of Air Conditioning and Ventilating Systems of Other Than Residence Type, NFPA 90A, and Residence Type Warm Air Heating and Air Conditioning Systems, NFPA 90B. Where local regulations are at a variance with instructions, installer should adhere to local codes.

FIGURE 2

INSTALLATION CLEARANCE

MIS-589

LOCATION

The condensing unit is designed to be located outside with free and unobstructed condenser air inlet and discharge. It must also permit access for service and installation.

Condenser air enters the coil from the rear of the unit as shown in Figure 2 with electrical service access.

MOUNTING UNIT OUTSIDE ON SLAB

A solid level base or platform, capable to support the unit’s weight, must be set at the outdoor unit predetermined location. The base should be at least two inches larger than the base dimensions of the unit and at least two inches higher than surrounding grade level. The required unit minimum installed clearances must be maintained as called out in Figure 2 when locating and setting the base.

Remove the unit from its shipping carton and position the unit on the prepared base or platform.

NOTE: These units employ internally sprung compressors; therefore, it is not necessary to remove or loosen the base mounting bolts on the compressor prior to operation.

Consideration should be given to the electrical and tubing connections when placing the unit to avoid unnecessary bends or length of material.

IMPORTANT INSTALLER NOTE

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

INSTALLATION REFRIGERANT TUBING

The information that follows on installing refrigerant tubing and for changing the system orifice (if required) covers applications listed in the front of this installation instruction only. Although other indoor units may be of similar construction, the installation instructions for these units should be consulted for proper installation of those units prior to installation.

This information is provided for the field service personnel to install refrigerant tubing in compliance with Section 608 of Title VI National Recycling and Emission Reduction Program for the U.S. Clean Air Act effective July 1, 1992.

Consult manual 2100-002on procedure for leak test – evacuation – charging before installation refrigerant tubing that requires any refrigerant recovery or system evacuation. Manual2100-002is included with the unit installation instruction package when shipped from the factory.

Manual 2100-346

Page 4

FIGURE 3

INSTALLING REFRIGERANT TUBING

pp5

SWEAT STYLE TUBING CONNECTIONS: SWEAT INDOOR UNIT and SWEAT OUTDOOR UNIT

Use only refrigeration grade (dehydrated and sealed) copper tubing. Care must be taken to insure that the tubing is kept clean and dry before and during installation. Do not remove the plugs from the tubing ends, coil connections or base valves until the connection is ready to be brazed.

The suction line must be insulated with a minimum of 3/8” Armaflex or equivalent before cutting and making connections.

1.Being careful not to kink, route both the suction line and liquid line between the indoor unit and outdoor unit. Use a tubing bender to make any necessary bends in tubing. When necessary to bend the insulated tube suction line, cut the insulation around its circumference at a distance far enough beyond the point of the bend so as to clear the tubing bender. Slip the insulation back together and vapor seal the joint with tape. Coil any excess tubing in a horizontal place with the slope of the tubing toward the condensing unit. See Figure 3.

CAUTION

1. Be careful not to tear the insulation when pushing it through hole in masonry or frame walls. 2. When sealing the tube opening in house wall, use a soft material to prevent tube damage and vibration transmission. 3. Avoid excessive bending in any one place to avoid kinking.

2.The tubing ends should be cut square. Make sure it is round and free of burrs at the connecting ends. Clean the tubing to prevent contaminants from entering the system.

NOTE: Do not braze line to units! If orifice needs to be changed, change out orifice first.

If the orifice does not have to be changed, skip the instructions outlined further in Step 3 and proceed to Step 8.

3.Disassemble Flow Control Assembly by turning body hex.

4.If existing orifice has not dropped out of the body when disassembled, remove by using a pin or paper clip. Discard this original orifice.

5.Insert proper sized orifice fully into the flow control body with rounded “bullet” nose towards the unit as shown in Figure 4. Insure the orifice stays inserted in body before connecting mating half. See chart in the outdoor unit installation instructions for proper size.

CAUTION

Be sure there is no dirt introduced into the flow control - orifice assembly. Be sure to install the orifice with the bullet nose pointing in the proper direction as shown in Figure 4. Failure to do so will result in improper operation.

FIGURE 4

FLOW CONTROL ASSEMBLY

FIELD ORIFICE REPLACEMENT INSTRUCTIONS

pp5

6.Thread assembly halves together by hand to insure proper mating of threads and tighten until bodies “bottom” or a definite resistance is felt.

7.Using a marker pen or ink pen, mark a line lengthwise from the union nut to the bulkhead. Then tighten an additional 1/6 turn (or 1 hex flat). The misalignment of the line will show the amount the assembly has been tightened. This final 1/6 turn is necessary to insure the formation of the leakproof joint.

8.Wrap a wet rag around the copper stub before brazing.

9.Flux the copper tube and insert into the stub. Braze the joint using an alloy of silver or copper and phosphorus with a melting temperature above 1,100° F for copper to copper joints. The phosphorus will act as a flux, therefore, no flux will be required.

Manual 2100-346

Page 5

A copper-silveralloy with a high silver content should be used when iron or steel material is involved in the joint. These alloys require the use of silver solder flux. Alloys containing phosphorus should not be used with iron or steel. Phosphorus reacts with the iron forming iron phosphate which is extremely brittle.

CAUTION

1. Brazing alloys with a melting temperature below 700° F should not be used. 2. Leadtin or tin-antimonysolders should not be used due to their low melting point and necessity for corrosive fluxes.

To further prevent the formation of copper oxide inside the tubing, dry nitrogen may be purged through the refrigerant system during brazing.

WARNING

Never purge or pressurize a system with oxygen. An explosion and fire will result.

10.After brazing, quench with wet rag to cool the joint and remove any flux residue.

11.Leak test all connections using an electronic leak detector or a halide torch.

12.Evacuate suction line, liquid line and indoor unit through outdoor unit base valves.

13.Open both the suction and liquid base valves to the fully open position. Refer to section later in installation instructions for details on setting proper system charge.

FIELD FABRICATED TUBING CONNECTIONS: QUICK CONNECT INDOOR UNIT and SWEAT OUTDOOR UNIT USING CTO KIT

Use only refrigeration grade (dehydrated and sealed) copper tubing. Care must be taken to insure that the tubing is kept clean and dry before and during installation. Do not remove the plugs from the tubing ends, coil connections or base valves until the connection is ready to be brazed.

The suction line must be insulated with a minimum of 3/8” Armaflex or equivalent before cutting and making connections.

1.Being careful not to kink, route both the suction line and liquid line between the indoor unit and outdoor unit. Use a tubing bender to make any necessary bends in tubing. When necessary to bend the insulated tube suction line, cut the insulation around its circumference at a distance far enough beyond the point of the bend so as to clear the tubing bender. Slip the insulation back together and vapor seal the joint with tape. Coil any excess tubing in a horizontal place with the slope of the tubing toward the condensing unit. See Figure 3.

CAUTION

1. Be careful not to tear the insulation when pushing it through hole in masonry or frame walls. 2. When sealing the tube opening in house wall, use a soft material to prevent tube damage and vibration transmission. 3. Avoid excessive bending in any one place to avoid kinking.

TABLE 4

TUBING CHART

 

 

 

Refrigerant Line Length

(Ft.)

 

 

 

Basic

 

 

 

 

 

 

 

 

 

0 - 20

21 - 60

 

61 - 100

 

 

Condensing

 

 

 

 

 

 

 

 

 

 

 

 

Unit Model

Liquid

Suction

Liquid

Suction

Liquid

Suction

 

 

 

 

 

 

 

 

 

 

 

 

HAC181

1/4"

5/8"

1/4"

5/8"

 

3/8"

3/4"

 

 

 

 

 

 

 

 

 

 

 

 

HAC241

3/8"

5/8"

3/8"

3/4"

 

3/8"

3/4"

 

 

 

 

 

 

 

 

 

 

 

 

HAC301

3/8"

5/8"

3/8"

3/4"

 

3/8"

3/4"

 

 

 

 

 

 

 

 

 

 

 

 

HAC361

3/8"

5/8"

3/8"

3/4"

 

1/2

7/8"

 

 

 

 

 

 

 

 

 

 

 

 

HAC421

3/8"

3/4"

3/8"

7/8"

 

1/2

7/8"

 

 

 

 

 

 

 

 

 

 

 

 

HAC481

3/8"

7/8"

3/8"

7/8"

 

1/2

1-1/8"

 

 

 

 

 

 

 

 

 

 

 

 

HAC601

3/8"

7/8"

3/8"

7/8"

 

1/2

1-1/8"

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Manual 2100-346

Page 6

2.The tubing ends should be cut square. Make sure it is round and free of burrs at the connecting ends. Clean the tubing to prevent contaminants from entering the system.

NOTE: Do not make any tubing connection at indoor unit at this time. Make all brazing of joints and evacuate both suction and liquid line first.

3.Wrap a wet rag around the copper stub before brazing.

4.Flux the copper tube and insert into the stub. Braze the joint using an alloy of silver or copper and phosphorus with a melting temperature above 1,100° F for copper to copper joints. The phosphorus will act as a flux, therefore, no flux will be required.

A copper-silveralloy with a high silver content should be used when iron or steel material is involved in the joint. These alloys require the use of silver solder flux. Alloys containing phosphorus should not be used with iron or steel. Phosphorus reacts with the iron forming iron phosphate which is extremely brittle.

To further prevent the formation of copper oxide inside the tubing, dry nitrogen may be purged through the refrigerant system during brazing.

CAUTION

1. Brazing alloys with a melting temperature below 700° F should not be used. 2. Lead-tinortin-antimonysolders should not be used due to their low melting point and necessity for corrosive fluxes.

WARNING

Never purge or pressurize a system with oxygen. An explosion and fire will result.

5.After brazing, quench with wet rag to cool the joint and remove any flux residue.

6.Leak test all connections using an electronic leak detector or a halide torch.

7.Evacuate suction line and liquid line through outdoor unit base valves.

If orifice does not have to be changed, skip the instructions outlined further in Step 8 and proceed to Step 15.

8.Recover charge from the indoor unit.

A.Connect the suction line only to the indoor unit as outlined in Steps 15, 16, and 17.

B.Recover indoor unit and suction line unit charge through service port located on outdoor unit base valve.

9.Disassemble Flow Control Assembly by turning body hex.

10.If existing orifice has not dropped out of the body when disassembled, remove by using a pin or paper clip. Discard this original orifice.

11.Insert proper sized orifice fully into the flow control body with rounded “bullet” nose towards the unit as shown in Figure 4. Insure the orifice stays inserted in body before connecting mating half. See chart in the outdoor unit installation instructions for proper size.

CAUTION

Be sure there is no dirt introduced into the flow control – orifice assembly. Be sure to install the orifice with the bullet nose pointing in the proper direction as shown in Figure 4. Failure to do so will result in improper operation.

12.Thread assembly halves together by hand to insure proper mating of threads and tighten until bodies “bottom” or a definite resistance is felt.

13.Using a marker pen or ink pen, mark a line lengthwise from the union nut to the bulkhead. Then tighten an additional 1/6 turn (or 1 hex flat). The misalignment of the line will show the amount the assembly has been tightened. This final 1/6 turn is necessary to insure the formation of the leakproof joint.

14.Evacuate the suction line and indoor unit through the outdoor unit base valve before connecting all other tubing. Refer to section later in installation instructions for details on setting the proper refrigerant charge.

15.Remove (remaining) protector caps and plugs (if orifice was changed). Inspect fittings and if necessary carefully wipe coupling seats and threaded surfaces with a clean cloth to prevent the inclusion of dirt or any foreign material in the system.

Manual 2100-346

Page 7

16.Lubricate male half diaphragm and synthetic rubber seal with refrigerant oil. Thread coupling halves together by hand to insure proper mating of threads. Be sure to hold the coupling firmly to prevent movement of the coupling and tubing. Failure to do so could tear out the diaphragm causing a blockage of the system. Use proper size wrenches (on coupling body hex and on union nut) and tighten until coupling bodies ”bottom” or a definite resistance is felt.

CAUTION

After starting to tighten up the fitting, never try to back it off or take it apart.

17.Using a marker or ink pen, mark a line lengthwise from the coupling union nut to the bulkhead. Then tighten an additional 1/4 turn. The misalignment of the line will show the amount the coupling has been tightened. This final 1/4 turn is necessary to insure the formation of leakproof joint. If a torque wrench is used, the torque values shown in Table 5 are recommended.

TABLE 5

COUPLINGS

Coupling Size

Feet Pounds

 

 

-6

10 - 12

 

 

-10

35 - 45

 

 

-11

35 - 45

 

 

-12

50 - 65

 

 

18.Leak test all connections using an electronic leak detector or a halide torch.

19.When tubing is installed in attics or drop ceilings, insulate the couplings on the larger tube thoroughly with 3/8” wall thickness, closed cell sponge tube insulation or equivalent. Failure to insulate will result in water damage to ceiling since the fitting will “sweat” and drop water on the ceiling.

Manual 2100-346

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