17. Electronic Configure To Order (ECTO) Control Parameters
Page 76
506457−01 05/10
Control Parameter
No. Name
DescriptionUnits
Control Value
Min. Default Max.
Block 5 Miscellaneous Parameters (continued)
5.04 CL_Staging 0 2 4 Option
Cooling staging options:
0− No cooling operation
1− Basic Tstat operation. Two cooling stages. Units with Economiz-
ers Y1=FreeCooling,
Y2=adds all mechanical stages.
2− Basic Tstat operation. Two cooling stages. Units with Economiz-
ers Y1=Free Cooling, Y2= adds first stage of mechanical.
3− Basic Tstat operation. Three cooling stages. Y1 only = first
stage, Y2 only = second stage, Y1+Y2 = third stage. Units with
Economizers Y2 only adds first stage of mechanical, Y1+Y2
adds first and second stage of mechanical.
4− Discharge air control. Up to four stages.
5.05 RAT_LT 0 0 1 Option
Enables return air temperature limit option.
Return air limits may be used for limiting zone temperatures. Continu-
ous fan operation recommended.
5.06 RAT_HT_LT
95
100
117
85
154
60
Counts
X:DegF
Return air limit for heating. If the return air heating limit is exceeded,
the heating demands are interrupted. 5.05 MUST BE SET TO 1 TO
ENABLE
5.07 RAT_CL_LT
124
80
146
65
154
60
Counts
X:DegF
Return air limit for cooling. If the return air cooling limit is exceeded,
the cooling demands are interrupted. 5.05 MUST BE SET TO 1 TO
ENABLE
5.08
A42_Input_
Occurrences
1 3 15 Counts
A42 input occurrences before service relay is energized.
(A55_P299_6)
5.09 HT_Staging 0 2 2 Option
Heating staging options:
0− No heating operation.
1− Discharge air control with up to 4 stages.
2− Thermostat operation.
5.10
LP_Strike_3_
Run_Time_1
0
0
45
360
255
2040
Counts
C:Sec.
Ignore LP trip when compressor run time less than this. LONG/HOT
condition.
5.11
LP_Strike_3_
Run_Time_2
0
0
90
720
255
2040
Counts
C: Sec.
Ignore LP trip when compressor run time less than this. LONG/COLD
condition.
5.12
LP_Strike_3_
Run_Time_3
0
0
15
120
255
2040
Counts
C:Sec.
Ignore LP trip when compressor run time less than this. SHORT/HOT
condition.
5.13
LP_Strike_3_
Run_Time_4
0
0
38
304
255
2040
Counts
C:Sec.
Ignore LP trip when compressor run time less than this. SHORT/
COLD condition.
5.14
LP_Strike_3_
Off_Time
28
3584
113
14464
169
21632
Counts
E:Sec
Low Pressure Switch Strike Three compressor off time breakpoint
for LONG/SHORT evaluation.
5.15
LP_Strike_3_
Temp_SP
50
100
97
70
191
10
Counts
Y:Deg.
Low Pressure Switch Strike Three outdoor air temperature breakpoint
for HOT/COLD evaluation.
5.16
DCV_Max_
Damper_Open
0
0
100
100
100
100
Counts
P:%
Maximum allowed Demand Control Ventilation damper open position.
(Set to 0 to disable IAQ). Also used for OAC.
5.17
DCV_Damper
_Start_Open_
SP
0
0
64
502
255
2000
Count
I:PPM
Damper start open" CO
2
setpoint for Demand Control Ventilation.
Level where fresh air damper begins to open.
OAC_Dampr_St
art_Open_SP
0 2.51 10 R: Volt
Damper start open" setpoint for Outdoor Air Control. Level where
fresh air damper begins to open.
5.18
DCV_Dampr_
Full_Open_SP
0
0
128
1004
255
2000
Count
I:PPM
Damper full open" CO
2
setpoint for Demand Control Ventilation. Lev-
el where fresh air damper is opened to maximum.
OAC_Dampr_F
ull_Open_SP
0 5.02 10 R: Volt
Damper full open" setpoint for Outdoor Air Control. Level where fresh
air damper is opened to maximum.
5.19
DCV_Low_Tem
p_Override_
Full_Closed
0
132
191
10
255
−31
Counts
Y:Deg.F
Low outdoor air temp. where fresh air damper is closed to minimum
position for Demand Control Ventilation and Outdoor Air Control
(OAC).
5.20
DCV_Low_Tem
p_ Override_
Start_Closing
0
132
144
40
255
−31
Counts
Y:Deg.F
Low outdoor air temp. where fresh air damper begins to close. Set
ECTO 5.20 = 255 to disable the outdoor Low Temp. override of DCV
operation. Also used for OAC.
5.21
DCV − High-
Temp. Override
Start Closing
0
132
89
75
255
−31
Counts
Y:Deg.F
High outdoor air temp. where fresh air damper begins to close. Set
5.21 =0 to disable the outdoor High Temp override of DCV opera-
tion. Also used for OAC.
5.22
DCV_High_Tem
p_ Override_
Full_Close
0
132
42
105
255
−31
Counts
Y:Deg.F
High outdoor air temp. where fresh air damper is closed to minimum
position. Also used for OAC.
5.23
Free_CL_
Max_Damper
0
0
100
100
100
100
Counts
P:%
The maximum allowed fresh air damper opening for FREE COOLING.
table continued on next page
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