Microprocessor Controller for DOAS
19
c
ooling
l
ockouT
This screen displays the cooling lockout temperature. Cooling will be disabled
when outside air is below the cooling lockout temperature (55ºF).
h
eaTing
l
ockouT
This screen displays the heating lockout temperature. Heating will be disabled
when outside air is above the lockout temperature (80ºF)
.
s
pace
s
eT
p
oinTs
during
u
noccupied
m
ode
The controller will have separate screens for unoccupied cooling and heating set
points.
Unoccupied Cooling Example: If set point = 80ºF, unoccupied cooling is enabled
when space equals 80ºF and above. Unoccupied cooling is disabled when space
temperature is below 75ºF.
Unoccupied Heating Example: If set point = 60ºF, unoccupied heating is enabled
when space temperature equals 60ºF and below. Unoccupied heating is disabled
when space temperature is above 65ºF.
Menu
w
inTer
r
amp
The winter ramp function prevents the supply temperature from dropping below
set point under the following conditions:
• Outside air temperature is below the winter ramp enable set point; and
• Heating capacity is at 100%
One of the following is used to perform the winter ramp function:
• Supply fan speed; or
• Outside air damper position
Note: If the unit is a heat pump, the supply fan is always used.
m
odbus
s
pace
T-s
TaT
The quantity of thermostats installed in the space that communicate the
temperature, humidity, and set point to the controller. The controller averages the
temperature and humidity readings when there is more than one installed. See
Appendix C for more information.
