62
Table 12. CORE Control System Unit Parameters
Control
Parameter
No
Screen Name
Parameter Short
Description
Control Value
Units
Description
Min.
Default
Max.
185
DACC STAGE
DIFFER
Discharge Air
Cooling Stage
Differential
2
2
20
°F
Discharge Air Cooling stage differential.
186
SRV OUTPT
CTRL MODE
Service Output
Control Mode
0
0
127
Option
A55 Service Output Control Mode = X +
32*Y + 16*Z
Input source = X:
•
0 = None
•
1 = Compressor 1 duty cycle.
(Compressor crankcase heater
function.)
>
On when outdoor air
temperature is less than
or equal to Parameter 189
and greater than or equal to
Parameter 192 seconds have
passed with compressor 1 off.
>
Off when Outdoor Air
temperature is greater than
Parameter 189 plus 3°F (fixed
dead-band) or is less than
Parameter 192 seconds have
passed with compressor 1 off
•
2 = On when occupied.
•
3 = On when blower on,
•
4 = On when heating demand.
•
5 = On when cooling demand.
•
6 = On when heating or cooling
demand.
•
7 = System Relative Humidity (A55_
P298_5 RH)
•
8 = System Indoor Air Quality. (A55_
P298_3 IAQ)
•
9 = System Outdoor Air Temperature
(A55_P267_1/2 OAT)
•
10 = Energy Recovery System
•
11 = SCR Option for Electric Heat
Algorithm Y for input sources
7 - 9:
•
0 = Hysteresis loop (see sections
14.2 - 14.4)
•
1 = Window - On when input is in
range; (see sections 14.2 - 14.4)
•
2 = Delayed-on. (see sections 14.2
- 14.4)
•
3 = Delayed-off. (see sections 14.2
- 14.4)
Inversion Z:
•
0- Output not inverted.
•
1- Output inverted.
187
SRV OUTPT SP
C02
Service Output
Set Point for
Carbon Dioxide
0
996
2000
ppm
A55 service relay output set point.
188
SRV OUTPT SP
RH
Service Output
Set Point for
Relative Humidity
0
100
100
%
Service Output Set Point for Relative
Humidity
189
SRV OUTPT SP
TEMP
Service Output
Set Point
Temperature
-31
51
132
°F
Service Output Set Point Temperature
190
SRV OUTPT DB
C02
Service Output
Deadband for
Carbon Dioxide
16
102
2000
ppm
A55 service relay output dead-band or
delay.
