Burnham BH, BV VI. Application Guidelines, General Guidelines, Large Factories, Fabrication Shops

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VI. APPLICATION GUIDELINES

A.GENERAL GUIDELINES

1.The first step in the design of a job is typically to determine the heat loss. Refer to ASHRAE and others for publications on the basic methodology used in calculating the building or area’s heat loss. Special attention should be paid to the building type (architecturally) and application placement (area use) in this procedure.

2.The second step is to decide the necessary engineering data for design conditions such as CFM, final air temperature, quantity and location of units, based on the specific Burnham Hydronics Unit Heater model selected.

3.Burnham Hydronics steam/hot water unit heaters’ versatility offers a wide selection of outputs and airflow allowing almost unlimited flexibility in job design.

4.Keep the following guidelines in mind when designing any job using steam/hot water unit heaters:

Always direct airflow to regions of greatest heat loss.

Use louvers for adjustment of throw length and complete directional control of airflow.

Mount units at the lowest practical and allowable level.

Select lower CFM models for lower installation heights and heavily occupied areas. Select higher CFM models for areas where higher installation is required.

More, smaller units will provide better heat distribution than fewer larger units.

Watch final air temperatures on units mounted at lower levels or in heavily occupied areas to ensure that air is warm enough to avoid drafts being felt.

Sound classifications: Burnham Hydronics Unit Heaters provide exceptional heat output while

considering the nuisance of a loud unit. All units were designed to minimize sound created by airflow and motor operation by careful component selection and inlet geometry. Sound Classification Table 2 shows typical rooms and their corresponding sound class rating.

Typical BH Unit Arrangement

Table 2: Sound Class Ratings*

TYPE OF ROOM OR BUILDING

SOUND CLASS RATING

 

 

Schools, Offices, Libraries, Hospitals, Foyers, Restrooms

I

 

 

Showrooms, Department Stores, Clubhouses, Commercial Dining Facilities

II

Large Lobbies, Warehouse Stores, Gymnasiums, Bars

III

 

 

Small Factories, Shipping Areas, Machine Shops, Stadium Common Areas

II-VII

Large Factories, Fabrication Shops

VII

 

 

*When placed in the paired room, the unit’s noise should be relatively comparable to the ambient sound level.

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Contents BH and BV Unit Heaters 8144A001R4-2/07Table of Contents Important Information Read Carefully Before Installation III. Installation II. General InformationWiring Instructions Unit Heater Mounting Height115V / 60Hz / 1PH Wiring Schematic Recommended Maximum Mounting Height Hot Water System PipingPrior to Operation IV. OperationInitial START-UP Motors MaintenanceInspect Regularly CasingsTypical BH Unit Arrangement Sound Class Ratings VI. Application GuidelinesGeneral Guidelines Large Factories, Fabrication ShopsSteam Performance Data -- High Motor Speed Steam Performance DataSteam Performance Data -- Reduced Motor Speed Application Procedure Selection Procedure Steam ApplicationGiven Design Conditions Steam Calculation Formulas Fata = Eata + AtraUnit Entering Steam Correction FactorsSteam Heating Capacity Conversion Factors Heater Air Temp Types 100 125 150Steam Pressure Psig Air Temperature Rise Conversion FactorsSteam Unit Heater Mounting Height Correction Factors Correction FactorGauge Temp Latent Heat Properties of SteamBtu/lb Hot Water Performance Data -- High Motor Speed Hot Water Performance Data -- Reduced Motor SpeedWater Flow Rate Selection Procedure HOT Water ApplicationWater Temperature 125,020 Btu/hr Final AirHOT Water Calculation Formulas BtuAG = BtuS or BtuA x Glycol Correction FactorEthylene Glycol Correction Factors HOT Water Correction FactorsHot Water Heating Capacity Conversion Factors Hot Water Unit Heater Mounting Height Correction FactorsField Installed Options for Horizontal Models only VII. OPTIONS, Accessories and Control SequencesField Installed Options for Horizontal and Vertical Models Control SequencesField Installed Options for Vertical Models only DescriptionVertical Air Outlet Accessory Dimensions Vertical Air Outlet Accessory Maximum Height and Spread123 Cone-JetLou Truncone No Deflector AnemoBH Dimensional Data VIII. Dimensional DataModel BH Dimensions Model BV Dimensions BV Dimensional DataMale NPT Fan Ship Model IX. Motor Data Motor/Power CodesMotor/Power Description Code Voltage and Motor TypeLimited Warranty