Baseboard Perimeter Heating

period three

System Configurations

notes

heat loss > 450 Btu/hr/ft

[430 W/m]

cooling-only

VAV terminal unit

baseboard

heating system

Figure 58

If the heat loss of the perimeter space exceeds 450 Btu/hr per linear foot [430 W per linear meter] of outside wall, an under-the-window, or baseboard, heating system is typically used. With this much heat loss, supplying a high quantity of warm air from overhead diffusers can cause downdrafts, leading to occupant discomfort.

The cooling requirements of these perimeter spaces are served by a cooling- only terminal unit. The diffusers are located in the center of the room in order to evenly supply cool air to the space.

During heating mode, the terminal unit provides minimum airflow to the space to meet the ventilation requirement. The perimeter heat source is separate, but can be controlled by the VAV terminal unit controller. Having only one controller for the space ensures proper sequencing of the cooling and heating systems.

42	TRG-TRC014-EN

TRG-TRC014-EN specifications

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