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 | |
Large Factories, Fabrication Shops | VII |
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|
*When placed in the paired room, the unit’s noise should be relatively comparable to the ambient sound level.
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