Burnham BH Manual Do Utilizador

1. The fi rst 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, 
fi nal air temperature, quantity and location of units, 
based on the specifi c Burnham Hydronics Unit 
Heater model selected.

3.  Burnham Hydronics steam/hot water unit heaters’ 

versatility offers a wide selection of outputs and 
airfl ow allowing almost unlimited fl exibility in job 
design.

4.  Keep the following guidelines in mind when 

designing any job using steam/hot water unit 
heaters:

• 

Always direct airfl ow to regions of greatest heat 
loss.

• 

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

• 

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 fi nal 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 classifi cations:  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 airfl ow 
and motor operation by careful component selection 
and inlet geometry.  Sound Classifi cation Table 2 
shows typical rooms and their corresponding sound 
class rating.

G

N

I

D

L

I

U

B

R

O

M

O

O

R

F

O

E

P

Y

T

G

N

I

T

A

R

S

S

A

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B

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G

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F

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-

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