Bryant 355M-40-4, 355M-40-5 operating instructions II. LOW-FIRE only Installation

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FRONT

°F °F

RETURN

AIR

MAX 85°F MIN 55°F

A93042

NOTE: These furnaces are designed for a minimum continuous return-air temperature of 60°F or intermittent operation down to 55°F such as when used with a night setback thermostat. Return-air temperature must not exceed a maximum of 85°F. Failure to follow these return-air temperature limits may affect reliability of heat exchangers, motors, and controls.

Provide ample space for servicing and cleaning. Always comply with minimum fire protection clearances shown on unit's clear- ance to combustibles label. (See Fig. 3.) Locate furnace where available electric power and gas supplies meet specifications on furnace rating plate.

32°F MINIMUM INSTALLED AMBIENT OR FREEZE PROTECTION REQUIRED

A93058

CAUTION: If these furnaces are installed in an uncon- ditioned space where ambient temperatures may be 32°F or lower, freeze protection measures must be taken.

II.LOW-FIRE ONLY INSTALLATION

This 355MAV furnace can be installed to operate in the low-fire only heating mode when sized using the low-fire heating capacity. This is accomplished by placing setup switch SW-2 in the ON position to provide only low-fire-heat operation. See Fig. 25 and Table 10. With this setup, high-fire operation will not occur.

FRONT

BACK

FRONT

B

A

C

K

A93043

When the model no. on the furnace rating plate is followed by an asterisk (*), the furnace has an alternate low-fire only efficiency rating as listed in the GAMA and CEC directories. This alternate rating will be listed as the furnace model number followed by an (-L) suffix.

CAUTION: The furnace can operate in the high-fire mode when certain fault conditions occur. The following precautions should be taken:

1. Size gas piping based on the high-fire input.

2. Check the high-fire input and adjust it per the main literature instructions.

NEVER assume the high-fire input rate is not important for low-fire-only installation.

III.FURNACE LOCATION RELATIVE TO COOLING EQUIPMENT

The cooling coil must be installed parallel with or on downstream

WARNING: Do not install furnace on its back. Safety control operation will be adversely affected. Never con- nect return-air ducts to back of furnace. Failure to follow this warning could result in fire, personal injury, or death.

side of furnace to avoid condensation in heat exchanger. When installed parallel with a furnace, dampers or other means used to control flow of air must prevent chilled air from entering furnace. If dampers are manually operated, they must be equipped with a means to prevent operation of either unit unless damper is in full-heat or full-cool position.

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Contents Ð1Ð ÐMultipoise OrientationsDimensions Ð2ÐUnit Size Safety Considerations Electrostatic Discharge ESD PrecautionsMinimum Inches Clearance To Combustible Construction → ÐClearances to CombustiblesIntroduction Applications GeneralII. Upflow Applications Condensate Trap Location Factory-Shipped OrientationÐ5Ð Condensate Trap Location Alternate Upflow OrientationPressure Switch Tubing Ð6ÐCondensate Trap Field Drain Attachment III. Downflow Applications Condensate Trap LocationCondensate Trap Tubing Ð7ÐÐ8Ð IV. Horizontal Left SUPPLY-AIR Discharge ApplicationsConstruct a Working Platform Horizontal Right SUPPLY-AIR Discharge ApplicationsÐ9Ð ÐAttic Location and Working Platform Condensate Trap Tubing ÐHorizontal Right Tube Configuration Location GeneralII. LOW-FIRE only Installation III. Furnace Location Relative to Cooling EquipmentInstallation Leveling Legs if Desired II. Installation in Upflow or Downflow ApplicationsIV. Hazardous Locations Ðopening Dimensions Furnace Plenum Opening Floor Opening CasingWidth III. Installation in Horizontal Applications ÐDuct FlangesIV. Filter Arrangement Ðfilter InformationBottom Closure Panel → ÐBottom Filter ArrangementWiring VI. GAS PipingÐmaximum Capacity of Pipe Electrical Connections→ ÐHeating and Cooling Application Wiring Diagram II -V WiringÐWiring Diagram III. Accessories Ðelectrical DataAmps Size Direct Venting Removal of Existing Furnaces from Common Vent SystemsNgpic II. COMBUSTION-AIR and Vent PipingÐCOMBUSTION-AIR and Vent Pipe Termination Clearances Combustion-Air and Vent Pipe DiameterLocation Clearance FT Or doors which can be opened or Combustion-air openingExample Combustion-Air and Vent Pipe AttachmentÐmaximum Allowable Pipe Length FT 2001 to3001 to 4001 to 5000³Ðmaximum Allowable Pipe Length FT 6001 to 7000³7001 to 8000³ 8001 to 9000³COMBUSTION-AIR Intake Housing Plug Fitting Termination KIT InstallationIII. Concentric Vent and COMBUSTION-AIR ÐRoof Termination Preferred Extended Exposed Sidewall Pipes Two-Pipe Termination KitConcentric Vent/Air Termination Kit 042040 042060 042080 060080 060100 060120IV. Multiventing and Vent Terminations Condensate Drain GeneralII. Application III. Condensate Drain ProtectionÐConcentric Vent and Combustion-Air Roof SELF-TEST Mode II. Heating ModeSequence of Operation HSIIV. Emergency Heat Mode Cooling ModeVI. Heat Pump Mode III. Heating Modeðtwo StageÐWiring Schematic for 2-Speed Cooling Applications VII. Continuous FAN ModeIX. Bypass Humidifier Mode Dehumidification ModeXI. Zone Mode START-UP Procedures GeneralÐair Conditioning A/C Airflow Setup Switch Position Ðcontinuous FAN CF Airflow Setup Switch PositionSetup Switches SW III. Prime Condensate Trap with WaterÐsetup Switch Description Ðblower OFF Delay Setup Switch PositionAdjustments IV. Purge GAS LinesSet Gas Input Rate → ÐRedundant Automatic Gas ValveBTU/CU FT Only 4001875 1.5 50007001 775 1.58000 825Ðaltitude Derate Multiplier for U.S.A CanadaSume the Orifice SIZE. Always Check and Verify Altitude Derate Multiplier Factor for U.S.ASet Temperature Rise Check Safety Controls Check Primary Limit ControlÐgas Rate CU FT/HR Set Thermostat Heat AnticipatorII. Check Pressure Switches ChecklistChecklistðinstallation CHECKLISTÐSTART-UPLoad Calculation Combustion and Vent Piping

355M-40-4, 355M-40-5 specifications

The Bryant 355M-40-5 and 355M-40-4 are innovative CNC cylindrical grinders designed to meet the demands of precision machining in various industrial applications. These machines stand out due to their robust construction, advanced technology, and versatile functionalities, which are critical for achieving high-quality grinding results.

One of the main features of the Bryant 355M-40-5 and 355M-40-4 is their precision grinding capability. With high spindle speeds and excellent rigidity, these grinders are engineered to deliver superior surface finishes even on complex geometries. The machines are equipped with advanced dressing systems that ensure consistent wheel profiles, enhancing performance and reducing cycle times.

The Bryant 355M-40-5 differentiates itself through its multi-axis capability, allowing for the grinding of intricate shapes and features without the need for extensive setup changes. Operators can easily program complex grinding sequences through the user-friendly interface, which supports both manual and automated operations. This flexibility is crucial in manufacturing environments that require quick turnaround times and adaptability to various workpieces.

Meanwhile, the Bryant 355M-40-4 focuses on efficiency and productivity, featuring a streamlined design that optimizes workflow. The machine is fitted with high-precision linear guides and ball screws, ensuring smooth and accurate movements during the grinding process. This results in minimal wear and tear, thereby extending the machine's lifespan and maintaining accuracy over time.

Key technologies incorporated into both models include state-of-the-art control systems that enable real-time monitoring and feedback during operations. This feature allows operators to make on-the-fly adjustments to optimize grinding parameters, leading to improved performance and reduced scrap rates. Additionally, the integration of automation solutions, such as robotic loading systems, enhances productivity by minimizing downtime and labor costs.

The Bryant 355M-40-5 and 355M-40-4 are built with durability in mind, utilizing high-strength materials that resist deformation and wear. Their thermal stability ensures consistent performance even under varying operating conditions, making them a reliable choice for high-volume production.

In summary, the Bryant 355M-40-5 and 355M-40-4 models are exemplary CNC cylindrical grinders that combine precision, efficiency, and advanced technology. Their features make them suitable for a wide range of grinding applications, from tool manufacturing to automotive components, ensuring that they remain competitive in the ever-evolving landscape of manufacturing technology.
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