Chapter 5 iCOM Controller 35
Liebert. PEX+Series Precision Air Conditioner User Manual
Parameters
Default
Setting range
Description
S122
2ND SETP
23.0 °C
5.0-40.0 °C
Temperature Set point
S124
HUM SENS
Return Sensor
REM,RET
Humidity Control Sensor
S125
HUM SET
50 %
20% ~ 80%
Humidity Set Point
S125
HUM SET
8.9 °C
5.0 - 30.0 °C
Dew Point Set Point
S126
HUM CTRL
Pred
Comp, Rel, Pred,DewP
Humidity control type
S126
HUM MODE
SUP
SUP,RET
Humidity Control Mode
S127
SUP PB
20%
1-20 %
Humidity Proportional Band
S127
SUP PB
4.4 K
1.1K - 10.0 K
Dew Point Proportional Band
S128
HUM INT
0min
0 - 25min
Humidity integration time
S129
HUM DB
10 %
0-50 %
Humidity Dead Band
S129
HUM DB
2.2 K
0-10.0 K
Dew Point Dead Band
S130
DEHUM
TEMP SET
12.2 °C
5.0-40.0 °C
Dehum Temp Set point
S130
DEH ACT
-
5.0-40.0 °C
Actual Dehum Set point
S131
DEH ADJ
5K
0-10K
Dehum Set point Adjustment
S131
DEH FIL
0.02 K/s
0.01 - 0.10 K/s
Dehum Set point Filter
S132
LL SENS
Return Sensor
SUP,REM,RET
Dehum Reheat/LL Sensor
S132
LL SET
21.7 °C
5.0-40.0 °C
Dehum Reheat/LL Set
S133
Lo Lim 1
-
-16.7K / -1.1K
Low Limit 1 Temperature Hysteresis
S133
LOW LIMIT2
-
-16.7K / -1.1K
Low Limit 2 Temperature Hysteresis
S13A
DEHSUPB
7.8 K
2.0 -30.0 K
Dehum Reheat Prop Band
S13B
ESTD AIS
23.9 °C
5.0-40.0 °C
ESTIMATED AISLE TEMP
S135
AMB TYPE
No
CONT, EFC, VAL, No
DT between Room/Outdoor Type
S136
AMB DT
1.0 K
0.0-20.0 K
DT between Room Air/Outdoor
S137
FC TYPE
No
No, CONT, VAL
DT between Room/FC Type
S138
FC DT
6.7K
0.0-20.0 K
DT between Room Air/FC Fluid
S139
MIN CW
No
Yes, No
Minimum Chilled Water Temp Enable
S140
MIN CW
7 °C
0.0-20.0 °C
Minimum CW temperature value
S141
LOCK FC
0 °C
0.0-9.0 °C
Lockout FC at FC Fluid below
S146
FAN SENS
Return Sensor
SUP,REM,RET,MAN
Fan Control Sensor
S147
FAN SET
22.8 °C
5.0-40.0 °C
Fan Speed Temperature Set Point
S148
FCTL TYP
PI
PROP,PI,NU
Fan Temperature Control Type
S149
FTEMP PB
20.0 K
2.2 -111.0 K
Fan Temperature Control P- Band
S149
FTEMPINT
1.0 min
0.0 - 15.0 min
Fan Temperature Control Integration Time
S150
FAN DB
0.6 K
0-20.0 K
Fan Deadband
S151
AIR CAL
10.0V
3.0 - 10.0V
Airflow Calibration
S152
VSD SET
100%
0-100 %
Fanspeed VSD Set point Standard
S152
VSD MIN
CW:60%
DX: 70%
0-100 %
Fanspeed VSD Set point Minimum
S153
VSD DEH
CW:60%
DX: 70%
0-100 %
Fanspeed VSD Set point Dehum
S153
VSD NOP
HPM CW:60%
HPM DX: 85%
non HPM:100%
0-100 %
Fanspeed VSD Set point No Power
S154
FAN + CO
HPM: No
non HPM: yes
No,Yes
Allow Fan Modulation on Compressors
S155
RETLIMEN
Local
No,LOC,TEAM
High Return Limit Enable
S15A
HIRETLIM
29.4 °C
5.0-40.0 °C
High Return Temperature Limit
S15B
RETLIMPB
11.1 K
0.2-20.0 K
Return Limit P-Band
S158
FF0 %
0.20 %/s
0.01 - 100.0 %/s
Fanspeed Change 0
S158
FF100 %
1.00 %/s
0.01 - 100.0 %/s
Fanspeed Change 100
S159
TRANS CH
1.0%/s
0.1 - 100.0 %/s
Fan Transition Change
S160
FRM
Decel
Decel, Both
Fanspeed Reposition Mode
S160
FRD
0 sec
0-300 sec
Fanspeed Reposition Delay
S161
FF DEC
0.10 %/s
0.01 - 100.0 %/s
Max Deceleration Rate
S162
BACK FAN
23.0 °C
5.0-40.0 °C
BMS Backup Fan Set point
S163
BACK DRV
No
No,STD,COUPL,B SET
BMS Backup Fan Operation
S164
FAN BMS
Yes
No, Yes
Allow BMS to change Fanspeed
S166
FAN MOD
Full
Full,Light
EC-Fan Mode
