Bryant 355MAV instruction manual Intake Housing Plug Fitting Drain

Page 36

Table 7—Maximum Allowable Pipe Length (ft) (Continued)

ALTITUDE (FT)

UNIT SIZE

TERMINATION

PIPE DIA

 

 

NUMBER OF 90° ELBOWS

 

TYPE

(IN.)*

1

2

 

3

4

 

5

6

 

 

 

 

 

042040

2 Pipe or 2-in

1-1/2

30

25

 

20

15

 

10

5

 

Concentric

2

62

60

 

58

56

 

55

53

 

 

 

 

 

042060

2 Pipe or 2-in

1-1/2

30

25

 

20

15

 

10

5

 

Concentric

2

62

60

 

58

56

 

55

53

 

 

 

 

8001 to 9000‡

042080

2 Pipe or 2-in

1-1/2

17

12

 

7

NA

 

NA

NA

060080

Concentric

2

62

60

 

58

56

 

51

46

 

 

 

 

060100

2 Pipe or 2-in

2

27

22

 

17

12

 

7

NA

 

Concentric

2-1/2

62

60

 

58

56

 

55

53

 

 

 

 

 

060120

2 Pipe or 3-in.

3†

43

41

 

39

37

 

35

34

 

Concentric

 

 

 

 

 

 

 

 

 

 

 

 

 

ALTITUDE (FT)

UNIT SIZE

TERMINATION

PIPE DIA

 

 

NUMBER OF 90° ELBOWS

 

 

TYPE

(IN.)*

1

2

 

3

4

 

5

6

 

 

 

 

 

042040

2 Pipe or 2-in

1-1/2

27

22

 

17

12

 

7

NA

 

Concentric

2

57

55

 

53

51

 

49

47

 

 

 

 

 

042060

2 Pipe or 2-in

1-1/2

27

22

 

17

12

 

7

NA

 

Concentric

2

57

55

 

53

51

 

49

47

 

 

 

 

9001 to 10,000‡

042080

2 Pipe or 2-in

1-1/2

15

10

 

5

NA

 

NA

NA

060080

Concentric

2

57

55

 

53

51

 

46

41

 

 

 

 

060100

2 Pipe or 2-in

2

24

19

 

14

9

 

NA

NA

 

Concentric

2-1/2

57

55

 

53

51

 

49

47

 

 

 

 

 

060120

2 Pipe or 3-in.

3

39

37

 

35

33

 

31

29

 

Concentric

 

 

 

 

 

 

 

 

 

 

 

 

 

Disk usage-Unless otherwise specified, use perforated disk assembly (factory-supplied in loose parts bag) †Wide radius elbow.

‡Vent sizing for Canadian installations over 4500 ft (1370 m) above sea level are subject to acceptance by the local authorities having jurisdiction. NA-Not Allowed; pressure switch will not make.

NOTES:

1.Do not use pipe size greater than those specified in table or incomplete combustion, flame disturbance, or flame sense lockout may occur.

2.Size both the combustion-air and vent pipe independently, then use the larger of these two diameters for both pipes.

3.Assume two 45° elbows equal one 90° elbow. Long radius elbows are desirable and may be required in some cases.

4.Elbows and pipe sections within the furnace casing and at the vent termination should not be included in vent length or elbow count.

5.The minimum pipe length is 5 ft for all applications.

If use of this drain connection is desired, drill out fitting’s tap plug with a 3/16-in. drill and connect a field-supplied 3/8-in. tube. This tube should be routed to open condensate drain for furnace and A/C (if used), and should be trapped. (See Fig. 38.)

 

COMBUSTION AIR

3/8" ID TUBE

INTAKE HOUSING

BURNER

 

BOX

3/16"

DRILL

TRAP

TO OPEN

DRAIN

COMBUSTION

AIR PIPE

4

(102mm)

MIN

A93035

Fig. 38—Intake Housing Plug Fitting Drain

2.Attach vent pipe to furnace as follows:

a.Determine location of vent pipe connection to inducer housing as shown in Fig. 36 for application.

b.Reposition elastomeric (rubber) inducer housing outlet cap and clamp to appropriate unused inducer housing connection. Tighten clamp.

WARNING: Inducer housing outlet cap must be installed and fully seated against inducer housing. Clamp must be tightened to prevent any condensate leakage. Failure to follow this warning could result in electrical shock, fire, personal injury, or death.

c.Install pipe support (factory-supplied in loose parts bag) into selected furnace casing vent pipe hole. Pipe support should be positioned at bottom of casing hole.

—36—

Image 36
Contents Installation, Start-up, and Operating Instructions Table of ContentsLocation Safety Considerations IntroductionCodes and Standards Dimensions Unit SizeInstaller Packet Includes Clearances to CombustiblesElectrostatic Discharge ESD Precaution Procedure Applications Procedure 1-GENERALProcedure 2-UPFLOW Applications Condensate Trap Location Factory-Shipped OrientationCondensate Trap Tubing Factory-Shipped Orientation Condensate Trap Location Alternate Upflow Orientation Condensate Trap Tubing Alternate Upflow OrientationPressure Switch Tubing Procedure 3-DOWNFLOW ApplicationsCondensate Trap Field Drain Attachment Condensate Trap Freeze ProtectionDownflow Tube Configuration Right-Hand Trap Installation Condensate Trap TubingCondensate Trap Field Drain Attachment Condensate Trap Field Drain Attachments Construct a Working PlatformAttic Location and Working Platform Horizontal Right Tube Configuration Location Procedure 1-GENERAL Furnace Location for Proper Condensate DrainageProhibit Installation on Back Procedure 2-LOW-FIRE only InstallationProcedure 3-FURNACE Location Relative to Coolingequipment Procedure 4-HAZARDOUS LocationsInstallation Procedure 1-LEVELING Legs if Desired Opening Dimensions Furnace Plenum Opening Floor OpeningFloor and Plenum Opening Dimensions Procedure 3-INSTALLATION in Horizontal ApplicationsProcedure 4-AIR Ducts General RequirementsDuctwork Acoustical Treatment Supply Air ConnectionsReturn Air Connections Procedure 5-FILTER Arrangement Procedure 6-BOTTOM Closure PanelProcedure 7-GAS Piping Filter InformationBottom Filter Arrangement Maximum Capacity of Pipe Nominal Length of Pipe FTInternal Pipe Diameter Size Procedure 8-ELECTRICAL Connections WiringAccessories Electrical DataProcedure 9-DIRECT Venting Removal of Existing Furnaces from Common Vent SystemsUnit Wiring Diagram Control Center Combustion-Air and Vent Piping355MAV Variable Speed Furnace Control Location Clearance FT OpeningCombustion-Air and Vent Pipe Connections Short Vent 5 to 8 ft System Maximum Allowable Pipe Length ft Altitude FT4001 to 5000‡ Intake Housing Plug Fitting Drain Roof Termination Preferred Concentric Vent and Combustion-Air RoofTermination Preferred Sidewall Termination of Less than 12 Procedure 10-CONDENSATE Drain Multiventing and Vent TerminationsGeneral Condensation Drain Protection ″ 25 mm Maximum TYP Example of Field Drain Attachment Sequence of OperationProcedure 1-SELF-TEST Mode Procedure 2-HEATING ModeProcedure 3-HEATING MODE-TWO Stage Procedure 4-EMERGENCY Heat ModeProcedure 5-COOLING Mode Procedure 6-HEAT Pump ModeSingle-Speed Applications Two-Speed ApplicationsProcedure 7-CONTINUOUS FAN Mode Procedure 8-COMPONENT TestProcedure 9-BYPASS Humidifier Mode Procedure 10-DEHUMIDIFICATION ModeProcedure 11-ZONE Mode START-UP Procedures Procedure 1-GENERALProcedure 2-SELECT Setup Switch Positions Air Conditioning A/C Airflow Switch Position Setup Switches SWAIR Setup Allowable Furnace Model Setup Switch Position TonsProcedure 3-PRIME Condensate Trap with Water Procedure 4-PURGE GAS LinesProcedure 5-ADJUSTMENTS Filling Condensate Trap Altitude AVG GAS Specific Gravity of Natural GAS Heat ValueAltitude United States Canada Set Temperature Rise Redundant Automatic Gas ValveAltitude Derate Multiplier for U.S.A Set Thermostat Heat AnticipatorExample Altitude Percent Derate MultiplierProcedure 6-CHECK Safety Controls Check Pressure SwitchesGas Rate Cu Ft/Hr Check Primary Limit ControlProcedure 7-CHECKLIST Amp Draw Check with AmmeterCHECKLIST-INSTALLATION Combustion and Vent Piping CHECKLIST-START-UPBook/Tab 1/6 Catalog No
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