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Bryant 355CAV installation instructions Maximum Allowable Pipe Length Ft / M

Models: 355CAV

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Table 7 – Maximum Allowable Pipe Length (Ft / M)

355CAV

Table 7 – Maximum Allowable Pipe Length (Ft / M)

Direct Vent (2-Pipe Only)

NUMBER OF 90_ ELBOWS

ALTITUDE

UNIT SIZE

Termination

Pipe Dia

1

2

3

4

5

6

(BTUH)

Type

(IN.)*

60,000

2 Pipe or 2--- In.

1--- 1/2

50 / 15.2

45 / 13.7

40 / 12.9

35

/ 10.7

30 / 9.1

25 / 7.6

Concentric

2

70 / 21.3

70 / 21.3

70 / 21.3

70

/ 21.3

70

/ 21.3

70

/ 21.3

80,000

2 Pipe or 2--- In.

1--- 1/2

30 / 9.14

25 / 7.6

20 / 6.1

15 / 4.6

10 / 3.0

5

/ 1.5

Concentric

2

70 / 21.3

70 / 21.3

70 / 21.3

70

/ 21.3

70

/ 21.3

70

/ 21.3

0 to 2000

100,000

2 Pipe or 2--- In.

2

45 / 13.7

40 / 12.9

35 / 10.7

30 / 9.1

25 / 7.6

20 / 6.1

Concentric

2--- 1/2

70 / 21.3

70 / 21.3

70 / 21.3

70

/ 21.3

70

/ 21.3

70

/ 21.3

2 Pipe or 3--- In.

2--- 1/2 one disk

10 / 3.0

NA

NA

NA

NA

NA

120,000

3 one disk

35 / 10.7

30 / 9.1

15 / 4.8

NA

NA

NA

Concentric

3 one disk†

70 / 21.3

70 / 21.3

70 / 21.3

70

/ 21.3

70

/ 21.3

70

/ 21.3

ALTITUDE

UNIT SIZE

Termination

Pipe Dia

NUMBER OF 90_ ELBOWS

(BTUH)

Type

(IN.)*

1

2

3

4

5

6

60,000

2 Pipe or 2--- In.

1--- 1/2

45 / 13.7

40 / 12.9

35 / 10.7

30

/ 9.14

25 / 7.6

20 / 6.1

Concentric

2

70 / 21.3

70 / 21.3

70 / 21.3

70

/ 21.3

70

/ 21.3

70

/ 21.3

80,000

2 Pipe or 2--- In.

1--- 1/2

26 / 7.9

21 / 6.4

16 / 4.9

11 / 3.4

6

/ 1.8

NA

2001 to 3000

Concentric

2

70 / 21.3

70 / 21.3

70 / 21.3

70

/ 21.3

70

/ 21.3

70

/ 21.3

100,000

2 Pipe or 2--- In.

2

40 / 12.2

35 / 10.7

30 / 9.1

25 / 7.6

20 / 6.1

15 / 4.6

Concentric

2--- 1/2

70 / 21.3

70 / 21.3

70 / 21.3

70

/ 21.3

70

/ 21.3

70

/ 21.3

120,000

2 Pipe or 3--- In.

3 one disk

31 / 9.4

26 / 7.9

12 / 3.7

NA

NA

NA

Concentric

3 one disk†

63 / 19.2

62 / 18.9

62 / 18.9

61

/ 18.6

61

/ 18.6

61

/ 18.6

ALTITUDE

UNIT SIZE

Termination

Pipe Dia

NUMBER OF 90_ ELBOWS

(BTUH)

Type

(IN.)*

1

2

3

4

5

6

60,000

2 Pipe or 2--- In.

1--- 1/2

42 / 12.8

37 / 11.2

32 / 9.8

27 / 8.2

22 / 6.7

17 / 5.2

Concentric

2

70 / 21.3

70 / 21.3

70 / 21.3

70

/ 21.3

70

/ 21.3

70

/ 21.3

80,000

2 Pipe or 2--- In.

1--- 1/2

25 / 7.6

20 / 6.1

15 / 4.6

10 / 3.0

5

/ 1.5

NA

3001 to 4000

Concentric

2

70 / 21.3

70 / 21.3

70 / 21.3

70

/ 21.3

70

/ 21.3

70

/ 21.3

100,000

2 Pipe or 2--- In.

2

38 / 11.6

33 / 10.1

28 / 8.5

23 / 7.0

18 / 5.5

13 / 4.0

Concentric

2--- 1/2

70 / 21.3

70 / 21.3

70 / 21.3

70

/ 21.3

70

/ 21.3

70

/ 21.3

120,000

2 Pipe or 3--- In.

3 one disk

29 / 8.8

24 / 7.3

10 / 3.0

NA

NA

NA

Concentric

3 one disk†

59 / 18.0

59 / 18.0

58 / 17.8

57

/ 17.4

57

/ 17.4

56

/ 17.0

ALTITUDE

UNIT SIZE

Termination

Pipe Dia

NUMBER OF 90_ ELBOWS

(BTUH)

Type

(IN.)*

1

2

3

4

5

6

60,000

2 Pipe or 2--- In.

1--- 1/2

40 / 12.2

35 / 10.7

30 / 9.1

25 / 7.6

20 / 6.1

15 / 9.6

Concentric

2

70 / 21.3

70 / 21.3

70 / 21.3

70

/ 21.3

70

/ 21.3

70

/ 21.3

80,000

2 Pipe or 2--- In.

1--- 1/2

23 / 7.0

18 / 5.5

13 / 4.0

8

/ 2.4

NA

NA

4001 to 5000‡

Concentric

2

70 / 21.3

70 / 21.3

70 / 21.3

70

/ 21.3

70

/ 21.3

68

/ 20.7

100,000

2 Pipe or 2--- In.

2

36 / 11.0

31 / 9.4

26 / 7.9

21 / 6.4

16 / 4.8

11 / 3.4

Concentric

2--- 1/2

70 / 21.3

70 / 21.3

70 / 21.3

70

/ 21.3

70

/ 21.3

70

/ 21.3

120,000

2 Pipe or 3--- In.

3 one disk†

56 / 17.1

55 / 16.8

54 / 16.5

53 / 6.2

52

/ 15.8

52

/ 15.8

Concentric

ALTITUDE

UNIT SIZE

Termination

Pipe Dia

NUMBER OF 90_ ELBOWS

(BTUH)

Type

(IN.)*

1

2

3

4

5

6

60,000

2 Pipe or 2--- In.

1--- 1/2

37 / 11.3

32 / 9.8

27 / 8.2

22 / 6.7

17 / 5.2

12 / 3.7

Concentric

2

70 / 21.3

70 / 21.3

70 / 21.3

70

/ 21.3

70

/ 21.3

70

/ 21.3

80,000

2 Pipe or 2--- In.

1--- 1/2

22 / 6.7

17 / 5.2

12 / 3.7

7

/ 2.1

NA

NA

5001 to 6000‡

Concentric

2

70 / 21.3

70 / 21.3

70 / 21.3

70

/ 21.3

68

/ 20.7

63

/ 19.2

100,000

2 Pipe or 2--- In.

2

33 / 10

28 / 8.5

23 / 7.0

18 / 5.5

13 / 4.0

8

/ 2.4

Concentric

2--- 1/2

70 / 21.3

70 / 21.3

70 / 21.3

70

/ 21.3

70

/ 21.3

70

/ 21.3

120,000

2 Pipe or 3--- In.

3 one disk†

53 / 16.2

52 / 15.8

50 / 15.2

49

/ 14.9

48

/ 14.6

47

/ 14.3

Concentric

*See notes on next page.

40

Image 40

Bryant 355CAV installation instructions Maximum Allowable Pipe Length Ft / M

Contents

TABLE OF CONTENTS Fig. 1 - Furnace OrientationFURNACE RELIABILITY HAZARD Installation InstructionsRequired Notice for Massachusetts Installations SAFETY CONSIDERATIONS 355CAVCUT HAZARD FURNACE RELIABILITY HAZARDFig. 2 - Dimensional Drawing Dimensions In. / mm355CAV INSTALLATION Fig. 3 - Clearances to Combustibles355CAV Fig. 4 - Return-AirTemperature Fig. 5 - Installation in a GarageSafety General InstallationELECTROSTATIC DISCHARGE ESD PRECAUTIONS INTRODUCTIONAPPLICATIONS UPFLOW APPLICATIONFig. 6 - Condensate Trap Condensate Trap Alternate Upflow OrientationCARBON MONOXIDE POISONING HAZARD 355CAVPressure Switch Tubing Upper Inducer Housing Drain ConnectionCondensate Trap Field Drain Attachment Fig. 8 - Alternate Trap LocationDOWNFLOW APPLICATIONS Fig. 9 - Condensate TrapCondensate Trap Location Condensate Trap TubingFig. 11 - Horizontal Left Tube Configuration HORIZONTAL LEFT SUPPLY-AIRDISCHARGE APPLICATIONSPressure Switch Tubing 355CAVVent 2-PipeApplication PROPERTY DAMAGEPressure Switch Tubing 355CAVFig. 14 - Horizontal Right Tube Configuration HORIZONTAL RIGHT SUPPLY-AIRDISCHARGE APPLICATIONSConstruct a Working Platform UNIT OPERATION HAZARDLOCATION Condenste Trap Field Drain AttachmentPressure Switch Tubing 355CAVFig. 16 - Prohibit Installation on Back FIRE OR DEATH HAZARDFig. 17 - Freeze Protection Furnace Location Relative to Cooling EquipmentINSTALLATION Installation in Upflow or Downflow ApplicationsInstallation in Horizontal Applications Hazardous LocationsFig. 22 - Duct Flanges Combustible FloorInstalled on a Combustible Floor 355CAV355CAV AIR DUCTS General RequirementsDuctwork Acoustical Treatment Supply Air Connections Upflow FurnacesReturn Air Connections FIRE HAZARDUpflow Furnaces Downflow and Horizontal FurnacesFig. 24 - Filter Installed for Side Inlet Bottom Closure PanelGas Piping FIRE OR EXPLOSION HAZARDFig. 26 - Removing Bottom Closure Panel Fig. 27 - Typical Gas Pipe ArrangementFig. 28 - Casing Pipe Grommets 355CAV115-vWiring Table 3 - Maximum Capacity of PipeELECTRICAL SHOCK HAZARD 355CAVFig. 30 - Disconnect Switch and Furnace Table 4 - Electrical DataELECTRICAL SHOCK AND FIRE HAZARD 355CAVFactory Installed J-BoxLocation 24-vwiringFig. 31 - Factory Installed J-BoxLocation AccessoriesAIR FOR COMBUSTION AND VENTILATION Combustion-Airand Vent Pipe SystemsDirect Vent / 2-PipeSystem Ventilated Combustion Air Option MaterialsASTM MATERIALPIPE FITTINGSFig. 33 - Furnace Control 355CAV355CAV Fig. 34 - Direct Vent Termination ClearanceA06675 355CAV A05013A05090 355CAVA05091 Location and Elbow Configuration COMBUSTION AIR PIPEFig. 38 - Combustion Air and Vent Pipe Transition UNIT CORROSION HAZARDFig. 40 - Intake Housing Plug Fitting Drain 355CAVUNIT CORROSION HAZARD CARBON MONOXIDE POISONING HAZARDVENT PIPE CARBON MONOXIDE POISONING ANDAttachment of Vent Pipe 355CAV304.8mm minimum 76.2 mm minimum 304.8 mm minimumFig. 41 - Attic Termination Fig. 42 - Crawlspace TerminationFig. 43 - Crawlspace Termination 304.8mm minimum355CAV 3” 76.2mm minimumVENT TERMINATION Extended Exposed Sidewall Pipes355CAV General5.Check required dimensions as shown 355CAVWinter Design Temperature Ambient 355CAVTable 7 - Maximum Allowable Pipe Length Ft / M 355CAVUNIT SIZE CONDENSATE DRAIN DIRECT VENT 2 PIPE TERMINATIONTERMINATION SYSTEM DIAMETER OF COMBUSTION AIRSTART-UP,ADJUSTMENT AND SAFETY CHECK Step 2 - Select Setup Switch PositionsAir Conditioning A/C Setup Switches Continuous Fan CF Setup SwitchesFig. 48 - Example of Setup Switch in Off Position Prime Condensate Trap with Water355CAV UNIT OPERATION HAZARD355CAV Fig. 49 - Wiring DiagramA06677 Fig. 50 - Inducer Housing Drain Tube Table 9 - Furnace Setup Switch DescriptionFig. 51 - Filling Condensate Trap 355CAVStep 3 - Sequence of Operation Purge Gas LinesSingle-StageThermostat and Step-ModulatingHeating Adaptive ModeHeating Two-StageThermostat and Two-StageMedium/High355CAV Thermidistat Mode Cooling Mode355CAV Super Dehumidify Mode Continuous Blower ModeContinuous Blower Speed Selection from Thermostat Heat PumpConditioning ConditionerPump Dual Fuel 355CAVPump Furnace and Two-SpeedAir ConditionerFurnace and Two-SpeedHeat Pump 355CAVStep 4 - Adjustments Set Gas Input RateFig. 60 - Redundant Automatic Gas Valve 355CAV355CAV Fig. 61 - Burner OrificeUNIT DAMAGE HAZARD Derated 2% / 1000 Ft. Above Sea Level 355CAV355CAV Derated 2% / 1000 Ft. Above Sea LevelTable 11 - Altitude Derate Multiplier for U.S.A Fig. 62 - Burner Flame355CAV UNIT DAMAGE HAZARDSet Temperature Rise Table 12 - Gas Rate cu Ft/HrSet Thermostat Heat Anticipator 355CAVCHECKLIST Check Safety ControlsCheck Pressure Switches Check Primary Limit ControlCHECKLIST - INSTALLATION Safety Controls Check OperationCHECKLIST --- START---UP 355CAV