Bryant 355M-40-5 Ðair Conditioning A/C Airflow Setup Switch Position, Setup Switches SW

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TABLE 8ÐAIR CONDITIONING (A/C) AIRFLOW SETUP SWITCH POSITION

AIR

 

 

A/C SETUP

 

 

ALLOWABLE FURNACE MODEL SETUP

 

 

CONDITIONER

CFM AIRFLOW

SWITCH POSITION

 

 

 

 

 

 

 

 

 

 

 

 

(TONS)

 

A/C-1

 

A/C-2

 

A/C-3

042040

042060

042080

060080

060100

060120

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Default

1200 or

OFF

 

OFF

 

OFF

3 Tons

3 Tons

3 Tons

5

Tons

5

Tons

5

Tons

2000

 

 

1200 CFM

1200 CFM

1200 CFM

2000 CFM

2000 CFM

2000 CFM

 

 

 

 

 

 

1-1/2

600

ON

 

OFF

 

OFF

X

X

X

 

Ð

 

Ð

Ð

 

2

800

OFF

 

ON

 

OFF

X

X

X

 

X

 

X

 

X

2-1/2

1000

ON

 

ON

 

OFF

X

X

X

 

X

 

X

 

X

3

1200

OFF

 

OFF

 

ON

X

X

X

 

X

 

X

 

X

3-1/2

1400

ON

 

OFF

 

ON

X

X

X

 

X

 

X

 

X

4

1600

OFF

 

ON

 

ON

Ð

Ð

Ð

X

 

X

 

X

 

5

2000

ON

 

ON

 

ON

Ð

Ð

Ð

X

 

X

 

X

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

XÐIndicates allowable selection.

TABLE 9ÐCONTINUOUS FAN (CF) AIRFLOW SETUP SWITCH POSITION

CONTINUOUS

 

 

CF SETUP

 

 

ALLOWABLE FURNACE MODEL SETUP

 

 

SWITCH POSITION

 

 

 

FAN (CFM)

 

 

 

 

 

 

 

 

CF-1

 

CF-2

 

CF-3

042040

042060

042080

060080

060100

060120

 

 

 

Default

OFF

 

OFF

 

OFF

565*

515*

690*

690*

860*

1035*

600

ON

 

OFF

 

OFF

X

X

X

Ð

Ð

Ð

800

OFF

 

ON

 

OFF

X

X

X

X

X

X

1000

ON

 

ON

 

OFF

X

X

X

X

X

X

1200

OFF

 

OFF

 

ON

X

X

X

X

X

X

1400

ON

 

OFF

 

ON

X

X

X

X

X

X

1600

OFF

 

ON

 

ON

Ð

Ð

Ð

X

X

X

2000

ON

 

ON

 

ON

Ð

Ð

Ð

X

X

X

*Add 15% additional CFM when Bypass Humidifier switch SW-3 on control board is used. XÐIndicates allowable selection.

1

OFF

A95198

Fig. 45ÐExample of Setup Switch in OFF Position

1.Remove main furnace door and blower access panel.

2.Locate CF setup switches on control center. (See Fig. 25.)

3.Determine desired continuous fan airflow.

4.Use Table 9 or wiring schematic to determine proper setup position of CF switches. (See Fig. 24 and 45.)

NOTE: The CF switches are factory set to provide continuous fan airflow equal to low-heat mode.

5.Replace main furnace door and blower access panel.

C. Setup Switches (SW)

The control center has 8 setup switches that may be set to meet the application requirements. Position these setup switches for the appropriate requirement.

1.Remove main furnace door and blower access panel.

2.Locate setup switches on control center. (See Fig. 25.)

3.See Table 10 for setup switch description. (See Fig. 24 and 45.)

4.Replace main furnace door and blower access panel.

NOTE: If a bypass humidifier is used, setup switch SW-3 (BPH) should be in ON position. This prevents nuisance limit trips caused by the increased temperature in return air resulting from bypass.

NOTE: If modulating dampers are used, setup switch SW-5 (MZ) should be in ON position. This allows furnace control center to compensate for modulating dampers. The control re-calibrates for new system static conditions once every minute while operating in low-heat or continuous fan modes.

III.PRIME CONDENSATE TRAP WITH WATER

CAUTION: Condensate trap must be PRIMED or proper draining may not occur. The condensate trap has 2 internal chambers which can ONLY be primed by pour- ing water into the inducer drain side of condensate trap.

1.Remove upper inducer housing drain connection cap. (See Fig. 46.)

2.Connect field-supplied 1/2-in. ID tube to upper inducer housing drain connection.

3.Insert field-supplied funnel into tube.

4.Pour 1 quart of water into funnel/tube. Water should run through inducer housing, overfill condensate trap, and flow into open field drain. (See Fig. 47.)

5.Remove funnel and tube from inducer housing and replace drain connection cap and clamp.

Ð35Ð

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Contents ÐMultipoise Orientations Ð1ÐUnit Size DimensionsÐ2Ð → ÐClearances to Combustibles Safety ConsiderationsElectrostatic Discharge ESD Precautions Minimum Inches Clearance To Combustible ConstructionCondensate Trap Location Factory-Shipped Orientation IntroductionApplications General II. Upflow ApplicationsCondensate Trap Location Alternate Upflow Orientation Ð5ÐCondensate Trap Field Drain Attachment Pressure Switch TubingÐ6Ð Ð7Ð III. Downflow ApplicationsCondensate Trap Location Condensate Trap TubingIV. Horizontal Left SUPPLY-AIR Discharge Applications Ð8ÐÐ9Ð Construct a Working PlatformHorizontal Right SUPPLY-AIR Discharge Applications ÐAttic Location and Working Platform Condensate Trap Tubing Location General ÐHorizontal Right Tube ConfigurationIII. Furnace Location Relative to Cooling Equipment II. LOW-FIRE only InstallationIV. Hazardous Locations Installation Leveling Legs if DesiredII. Installation in Upflow or Downflow Applications Width Ðopening DimensionsFurnace Plenum Opening Floor Opening Casing ÐDuct Flanges III. Installation in Horizontal Applications→ ÐBottom Filter Arrangement IV. Filter ArrangementÐfilter Information Bottom Closure PanelElectrical Connections WiringVI. GAS Piping Ðmaximum Capacity of PipeII -V Wiring → ÐHeating and Cooling Application Wiring DiagramÐWiring Diagram Amps Size III. AccessoriesÐelectrical Data II. COMBUSTION-AIR and Vent Piping Direct VentingRemoval of Existing Furnaces from Common Vent Systems NgpicOr doors which can be opened or Combustion-air opening ÐCOMBUSTION-AIR and Vent Pipe Termination ClearancesCombustion-Air and Vent Pipe Diameter Location Clearance FTCombustion-Air and Vent Pipe Attachment Example4001 to 5000³ Ðmaximum Allowable Pipe Length FT2001 to 3001 to8001 to 9000³ Ðmaximum Allowable Pipe Length FT6001 to 7000³ 7001 to 8000³III. Concentric Vent and COMBUSTION-AIR COMBUSTION-AIR Intake Housing Plug FittingTermination KIT Installation ÐRoof Termination Preferred 042040 042060 042080 060080 060100 060120 Extended Exposed Sidewall PipesTwo-Pipe Termination Kit Concentric Vent/Air Termination KitIII. Condensate Drain Protection IV. Multiventing and Vent TerminationsCondensate Drain General II. ApplicationÐConcentric Vent and Combustion-Air Roof HSI SELF-TEST ModeII. Heating Mode Sequence of OperationIII. Heating Modeðtwo Stage IV. Emergency Heat ModeCooling Mode VI. Heat Pump ModeVII. Continuous FAN Mode ÐWiring Schematic for 2-Speed Cooling ApplicationsSTART-UP Procedures General IX. Bypass Humidifier ModeDehumidification Mode XI. Zone ModeIII. Prime Condensate Trap with Water Ðair Conditioning A/C Airflow Setup Switch PositionÐcontinuous FAN CF Airflow Setup Switch Position Setup Switches SWÐblower OFF Delay Setup Switch Position Ðsetup Switch Description→ ÐRedundant Automatic Gas Valve AdjustmentsIV. Purge GAS Lines Set Gas Input RateBTU/CU FT 5000 Only4001 875 1.5825 7001775 1.5 8000Altitude Derate Multiplier Factor for U.S.A Ðaltitude Derate Multiplier for U.S.ACanada Sume the Orifice SIZE. Always Check and VerifySet Thermostat Heat Anticipator Set Temperature RiseCheck Safety Controls Check Primary Limit Control Ðgas Rate CU FT/HRChecklist II. Check Pressure SwitchesCombustion and Vent Piping ChecklistðinstallationCHECKLISTÐSTART-UP Load Calculation

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