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Appendix B continued
Using the (optional) Humidity Temperature
Adjustment
Occupant comfort is determined by both temperature
and humidity. There are times of the year (especially
Spring and Fall) when temperatures may be at the
proper setting, but high humidity can cause
discomfort.
e-Stat
The
can automatically lower the programmed
cooling setting by 2 °F when a pre-selected Relative
Humidity (RH) setting is exceeded.
e-Stat
It lowers the cooling setpoint only when the
is
®
satisfi ed at the programmed cooling setpoint.
You can choose a relative humidity "trigger point"
from remotely via the web based interface. (from 45%
RH to 70% RH) Let's choose 55% RH. In this
e-Stat
example let's assume that the
has been
remotely pro-grammed for a 74° F cooling setting.
e-Stat
If the
is holding the temperature in the space
at 74° F and the RH is below 55%, then the cooling
would turn off normally. However, if the space tem-
perature is at 74°F and the RH goes above 55%,
then the "Cool Set" would automatically drop to 72°F.
The words "REL HUMIDITY" will appear (fl ashing) in
the display for as long as the cooling is operating in
this high humidity mode.
Two conditions will stop the extra cooling. First, if the
room temperature drops below 72°F, or second, if
the relative humidity drops 5% below the "RH trigger
point". In this example, the humidity would have to
drop to 50% R.H. in order for the cooling setpoint to
revert back to 74°F.
25
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