Bryant 355CAV Checklist, Check Safety Controls, Check Primary Limit Control

Page 59

NOTE: When using an electronic thermostat, set cycle rate for 3

2.

Remove control access door and disconnect inducer motor

cycles per hr.

 

12-pin wire harness at inducer motor.

 

3. Return setup switch SW1-2 to OFF position and replace

3.

Turn on 115-v power to furnace.

 

thermostat on subbase.

4.

Set thermostat to “call for heat.” When pressure switches

Check Safety Controls

 

are functioning properly, status code 42 will flash on fur-

This section covers the safety controls that must be checked

 

nace control approximately 20 sec after thermostat switch

 

is closed. If either a status code 31 or 32 is flashed when

before the installation is complete. The flame sensor, gas valve,

 

 

inducer motor is disconnected, the furnace will shut itself

and pressure switches were all checked in the Start-up procedure

 

 

down

immediately.

Determine the reason

pressure

section as part of normal operation.

 

 

switches did not function properly and correct the condi-

Check Primary Limit Control

 

 

tion.

 

 

 

This control shuts off the gas control system and energizes the

 

 

 

 

5.

Turn off 115-v power to furnace.

 

air-circulating blower motor if furnace overheats.

 

6.

Reconnect inducer motor wire harness. Reinstall furnace

1. The recommended method of checking this limit control is

 

access door.

 

 

to gradually block off return air after furnace has been op-

 

 

 

7.

Turn on 115-v power to furnace.

 

erating for a period of at least 5 minutes.

 

8.

Reset thermostat to desired temperature.

 

2. As soon as limit control has shut off burners, a status code

 

 

 

CHECKLIST

 

33 will appear on furnace control.

 

 

 

3. The return-air opening should be unblocked to permit

1.

Put away tools and instruments. Clean up debris.

 

normal air circulation.

2.

Verify flame rollout manual reset switch has continuity.

By using this method to check the limit control, it can be

3.

Verify

that blower and

main access doors are

properly

established that the limit is functioning properly and the furnace

 

installed.

 

 

will operate safely if there is a restricted return-air duct or motor

 

 

 

4.

Cycle test furnace with room thermostat.

 

failure. If the limit control does not function during this test, the

 

5.

Check operation of accessories per manufacturer’s instruc-

cause must be determined and corrected.

Check Pressure Switches

 

tions.

 

 

 

6.

Review User’s Manual with owner.

 

This control proves operation of the draft inducer. Check switch

 

7.

Leave literature packet near furnace.

 

operation as follows:

 

 

 

 

 

 

1. Turn off 115-v power to furnace.

THERMOSTAT SUBBASE TERMINALS WITH THERMOSTAT REMOVED (ANITICIPATOR, CLOCK, ETC.,

MUST BE OUT OF CIRCUIT.)

HOOK-AROUND AMMETER

R Y W G

10 TURNS

FROM UNIT 24-V CONTROL TERMINALS

EXAMPLE:

5.0 AMPS ON AMMETER

=

0.5 AMPS FOR THERMOSTAT

10 TURNS AROUND JAWS

ANTICIPATOR SETTING

 

 

A96316

Fig. 63 - Amp Draw with Ammeter

355CAV

59

Page 58 Page 60
Image 59
Page 58 Page 60
Contents Table of Contents Installation InstructionsRequired Notice for Massachusetts Installations CUT Hazard Safety ConsiderationsDimensional Drawing Dimensions In. / mmInstallation Codes and Standards Upflow Application Electrostatic Discharge ESD PrecautionsIntroduction ApplicationsCondensate Trap Tubing Alternate Upflow Orientation Condensate Trap Alternate Upflow OrientationCarbon Monoxide Poisoning Hazard Condensate Trap Freeze Protection Upper Inducer Housing Drain ConnectionCondensate Trap Field Drain Attachment Condensate Trap Location Downflow ApplicationsHorizontal Left SUPPLY-AIR Discharge Applications Horizontal Left Tube ConfigurationManual Shutoff GAS Valve Sediment Trapcondensate Trap Property DamageUnit Operation Hazard Horizontal Right SUPPLY-AIR Discharge ApplicationsConstruct a Working Platform Condenste Trap Field Drain Attachment LocationFire or Death Hazard Prohibit Installation on BackUnit MAY not Operate Hazard InstallationFIRE, EXPLOSION, Injury or Death Hazard Furnace, Plenum, and Coil Assembly or Coil Box Locations Reqd PER ROD AIR Ducts Unit MAY not Operate Fire HazardFIRE, Carbon Monoxide and Poisoning Hazard Fire or Explosion Hazard Bottom Closure PanelGas Piping Removing Bottom Closure Panel Electrical Shock Hazard WiringMaximum Capacity of Pipe Electrical Shock and Fire Hazard Disconnect Switch and FurnaceFire or Electrical Shock Hazard Factory Installed J-Box LocationAccessories Fire and Explosion Hazard AIR for Combustion and VentilationCement AstmMaterial Pipe Fittings DescriptionFurnace Control Direct Vent Termination Clearance Ventilated Combustion Air Vent Termination Clearance Vent Pipe Termination for Ventilated Combustion Air System Unit Corrosion Hazard Combustion AIR PipeCombustion Air Termination Ventilated Combustion Air Option Attachment of Combustion Air Intake Housing Plug FittingAttachment of Vent Pipe Vent PipeCombustion Air Termination-Direct Vent / 2-Pipe System Carbon Monoxide Poisoning Property Damage Hazard304.8mm minimum 76.2mm minimum Extended Exposed Sidewall Pipes Vent TerminationTwo-Pipe Termination Kit Direct Vent/2-Pipe System Only Vent Termination Kit Direct Vent/2-Pipe System Only042060 Btuh Maximum Allowable Pipe Length Ft / MUnit Size Personal Injury Hazard Condensate DrainAdditional Setup Switches SW4 START-UP, Adjustment and Safety CheckAir Conditioning A/C Setup Switches Continuous Fan CF Setup SwitchesPrime Condensate Trap with Water Example of Setup Switch in Off PositionWiring Diagram Furnace Setup Switch Description Inducer Housing Drain TubePurge Gas Lines Sequence of OperationTwo-Stage Thermostat and Two-Stage Low / High Heating See -55 for thermostat connections Thermidistat ModeHeat Pump Super Dehumidify ModeContinuous Blower Mode Continuous Blower Speed Selection from ThermostatStep-Modulating Furnace with Single-Speed Air Conditioning Furnace and Two-Speed Heat Pump Pump Furnace and Two-Speed Air ConditionerRedundant Automatic Gas Valve Set Gas Input RateBurner Orifice A07253 A07254 Burner Flame Altitude Derate Multiplier for U.S.ASet Thermostat Heat Anticipator Set Temperature RiseGas Rate cu Ft/Hr Check Primary Limit Control ChecklistCheck Safety Controls Check Pressure SwitchesCombustion and Vent Piping Checklist Installation
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355CAV specifications

The Bryant 355CAV is a state-of-the-art automated vertical machining center designed to enhance precision and efficiency in the manufacturing sector. Renowned for its robust construction, this machine is engineered to handle a broad spectrum of machining tasks, making it suitable for both small and large-scale production environments.

One of the standout features of the Bryant 355CAV is its advanced CNC control system, which provides users with exceptional ease of use. The intuitive user interface allows operators to program complex machining operations with minimal effort, significantly reducing setup times. The machine's high-speed spindle achieves impressive rotational speeds, which allows for quick material removal, ultimately optimizing productivity and throughput.

The Bryant 355CAV exhibits superior rigidity and stability due to its solid cast iron frame and carefully designed structural components. This construction minimizes vibrations during machining, ensuring that even the most intricate parts are produced with high accuracy. The machine's precision ground linear guideways further enhance its performance by providing smooth motion and high load capacity.

Equipped with a large work envelope, the Bryant 355CAV enables manufacturers to accommodate various part sizes and geometries. Additionally, its automatic tool changers can hold a variety of tools, thus facilitating quick transitions between different machining operations without requiring manual intervention. This flexibility is essential for meeting the diverse needs of modern manufacturing.

Another notable characteristic of the Bryant 355CAV is its energy-efficient design. It integrates modern technologies aimed at reducing power consumption while maintaining optimum performance. This environmentally conscious approach not only cuts operational costs but also aligns with the growing demand for sustainable manufacturing practices.

Moreover, the Bryant 355CAV features advanced monitoring capabilities, allowing operators to track machine performance in real time. Data analytics from these systems can be utilized to improve operational efficiency, reduce downtime, and enhance predictive maintenance protocols.

In summary, the Bryant 355CAV is a versatile, high-performance machining center that showcases cutting-edge features and technologies. Its combination of user-friendly controls, sturdy construction, energy efficiency, and advanced monitoring positions it as a vital asset for manufacturers aiming to elevate their productivity and precision in an increasingly competitive landscape.
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