D-EOMWC00803-26_01EN - 13/39
Thermostat Ctrl
This page resumes all the parameters related to the unit thermostatic control.
Setpoint/Sub-Menu
Default
Range
Description
Start Up DT=
2.7°C
0.0…5.0°C
Offset to start thermostat control
Shut Dn DT=
1.5°C
0.0…1.7°C
Offset to standby
Stg Up DT=
0.5°C
0.0…1.7°C
Offset to allow compressor starts
Stg Dn DT=
1.0°C
0.0…1.7°C
Offset to force one compressor off
Stg Up Delay=
3 min
0…60 min
Compressor start interstage
Stg Dn Delay=
3 min
3…30 min
Compressor stop interstage
Strt Strt Dly=
15min
15…60 min
Compressor Start to Start delay
Stop Strt Dly=
3min
3…20 min
Compressor Stop to Start delay
Ice Cycle Dly=
12h
1…23h
Ice cycle delay
Lt Ld Stg Dn %=
40%
20…50%
Circuit capacity threshold to stage down one compressor
Hi Ld Stg Up %=
50%
50…100%
Circuit capacity threshold to stage up one compressor
Max Cmps Run
1
1…2
Maximum number of runnable compressor
Network Ctrl
This page resumes all settings related to Network control.
Setpoint/Sub-Menu
Default
Range
Description
Control Source=
Local
Local, Network
Control source selection: Local/BMS
Act Ctrl Src=
N/A
Local, Network
Active control between Local/BMS
Netwrk En SP=
Disable
Enable, Disable
Enable unit command from BMS
Netwrk Mode SP=
Cool
-
Cool, Ice, Heat (NA), Cool/Heat Recovery
Netwrk Cool SP=
6.7°C
-
Cooling setpoint from BMS
Netwrk Cap Lim=
100%
-
Capacity limitation from BMS
Network Heat SP=
45.0°C
-
Heating setpoint from BMS
Remote Srv En=
Disable
Enable, Disable
Remote server enable
Pumps
This page contains the settings to define the operation of the primary/backup pumps, the running hours of each pump and
all parameters to configure the behavior of the pump driven with an inverter.
Setpoint/Sub-Menu
Default
Range
Description
Evp Pmp Ctrl=
#1 Only
#1 Only, #2 Only, Auto, #1
Primary, #2 Primary
Set number of Evaporator pumps operational and which
priority
Evap Recirc Tm=
30s
0…300s
Water recirculating timer
Evap Pmp 1 Hrs=
0h
Running Hours Evaporator Pump 1 (if present)
Evap Pmp 2 Hrs=
0h
Running Hours Evaporator Pump 2 (if present)
Speed 1=
N/A
0-100%
Speed when the input Double Speed Switch is open
Cnd Pump Ctrl=
#1 Only
#1 Only, #2 Only, Auto, #1
Primary, #2 Primary
Set number of Condenser pumps operational and which
priority
Cond Pmp 1 Hrs=
0h
Running Hours Condenser Pump 1 (if present)
Cond Pmp 2 Hrs=
0h
Running Hours Condenser Pump 2 (if present)
Condenser
This page contains basics settings for condensation control described in section 5.3.
Setpoint/Sub-Menu
Default
Range
Description
Cond LWT
-273.1°C
-
Present value of Condenser Leaving Water Temperature
Cond EWT
-273.1°C
-
Present value of Condenser Entering Water Temperature
# Tower Running
25.0 °C
1…4
Actual number of tower steps
Bypass Position
0%
0…100%
Present value of Bypass Valve
Fan VFD Speed
0%
0…100%
Present value of Condenser Fan Speed
Tower Control
None
None, Cond EWT
Regulation measurement
Num Fan Stages
1
1…4
Number of fan stages
Fan Stage 1 On
25.0 °C
19.0…55.0 °C
Setpoint for activation of Tower 1
Fan Stage 2 On
27.0 °C
26.0…55.0 °C
Setpoint for activation of Tower 2
Fan Stage 3 On
29.0 °C
28.0…55.0 °C
Setpoint for activation of Tower 3
Fan Stage 4 On
31.0 °C
30.0…55.0 °C
Setpoint for activation of Tower 4
Fan Stage Off Diff
1.5 °C
0.1…5.0 °C
Differential for deactivation of Towers
Stage On Delay
2min
1…60min
Delay for fan stage on
Stage Off Delay
5min
1…60min
Delay for fan stage down
Stage On @
80%
0…100%
Fan speed for stage up of additional fan
Stage Off @
30%
0…100%
Fan speed for stage down of one fan
Valve/Vfd Control
None
None, Valve Setpoint, Valve
Stage, VFD Stage, Valve
SP/VFD Stage
Regulation method
