Trane TRG-TRC014-EN manual Overhead Supply Perimeter Heating, System Configurations, period three

period three

System Configurations

notes

Overhead Supply Perimeter Heating

diffusers in

center of space

< 250 Btu/hr/ft [430 W/m]

diffusers blanket

perimeter wall

250-450 Btu/hr/ft

[240-430 W/m] Figure 59

If the heat loss of the perimeter space is less than 450 Btu/hr per linear foot [430 W per linear meter] of outside wall, downdrafts are less problematic and heated air supplied through ceiling diffusers can provide a satisfactory solution.

Again, the rate of heat loss is used to determine the proper diffuser location. If the heat loss is between 250 and 450 Btu/hr per linear foot [240 and 430 W per linear meter] of outside wall, diffusers should discharge directly downward and blanket the perimeter walls with heated air.

If the heat loss is less than 250 Btu/hr per linear foot [240 W per linear meter] of outside wall, diffusers can be located in the center of the room and still provide adequate blanketing to handle the heat loss.

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