Addendum Summary
This addendum describes how to enable and use the new
night air cooling modes available with TC-1 controller
firmware version 3.9 and higher.
Night air cooling modes allow a single TC-1 controller to cool
space temperature via fresh air draw (ventilation) or
mechanical refrigeration (A/C). TC-1 night air logic uses both
inside and outside air temperatures to determine which
method of cooling to employ.
Basic Features:
Uses two probes: one inside and one outside.
Offers two different night air cooling modes: NA1 and
NA2
Set point (SP1) specifies the maximum desired space
temperature
Night Air Mode 1 (NA1) uses a second set point (SP2)
to specify maximum outside air temperature above
which fresh air ventilation is inhibited.
Night Air Mode 2 (NA2) uses SP1 and a fixed scale
factor against which thermostat differential (Dif) is
multiplied and then subtracted from inside air
temperature to dynamically determine when it's
appropriate to engage fresh air ventilation.
If outside air temperature is too high for ventilation,
then mechanical cooling will be engaged instead.
New set point input routines allow SP1 and SP2 to be
adjusted individually or together, simultaneously.
Acrolon
Technical Support
Phone: 707-938-1300 (option 2)
E-mail:
Web:
www.acrolon.com