EWWQ090G ÷ EWWQ720L - R410A - Water-cooled scroll chillers
EWLQ090G ÷ EWLQ720L - R410A - Condenser less
EWHQ100G ÷ EWHQ400G - R410A - Heat pump scroll chillers
EWAQ-
- R410A - Air-cooled scroll chillers
EWAQ-
- R410A - Air-cooled scroll chillers
EWYQ-
- R410A - Air-cooled scroll heat pumps
Air and Water cooled scroll chillers & heat pump
Operation
Manual
EWWQ - EWLQ - EWHQ
EWAQ - EWYQ
Air or Water cooled scroll chiller &
heat pump
D-EOMHW00107-15EN
Operation Manual
29
4.2 View/Set Unit
Setpoint/Sub-Menu
Default
Range
Description
Thermostat Ctrl
-
Submenu Thermoregulation control parameter
Network Ctrl
-
Submenu Network Control
Unit Cond Ctrl
-
Submenu Unit Condensing Control (W/C only)
Pumps
-
Submenu Pumps control and data
Master/Slave
-
Submenu Master Slave
Date/Time/Schedule
-
Submenu Date, Time and Quiet Night mode schedule
Power Conservation
-
Submenu Unit Limiting functions
Modbus Setup
-
Submenu Setup of Modbus communication
Bacnet IP Setup
-
Submenu Setup of Bacnet IP communication
Bacnet MSTP Setup
-
Submenu Setup of Bacnet MSTP communication
LON Setup
-
Submenu Setup of LON communication
Ctrlr IP Setup
-
Submenu IP settings for on-board web-server
Cloud Connection
-
Submenu Cloud Connection
4.2.1 Thermostat Ctrl
This page resumes all thermoregulation parameters. For more details about this parameters and
the thermoregulation logic see section 5.1.4.
Setpoint/Sub-Menu
Default
Range
Description
Start Up DT=
2.7°C
0.0…5.0°C
Offset respect the active setpoint for unit start.
Shut Dn DT=
1.5°C
0.0…5.0°C
Offset respect the active setpoint for unit shutdown
Stage DT=
1.0°C
0.0…Start Up DT°C
Offset respect the active setpoint for unit stage up and down
Max Pulldn=
1.7°C/min
0.1…2.7°C/min
Max pull down rate of controlled water temperature
Max PullUp=
1.7°C/min
0.1…2.7°C/min
Max pull up rate of controlled water temperature
Stg Up Delay=
2min
0…8min
Compressor start inter-stage delay
Stg Dn Delay=
30sec
20…60sec
Compressor stop inter-stage delay
Strt Strt Dly=
10min
10…60min
Compressor Start to Start delay
Stop Strt Dly=
3min
3…20min
Compressor Stop to Start delay
Ice Cycle Dly=
12h
1…23h
Ice cycle delay
OAT En Bckp Htr=
-3.0°C
-
20.0…5°C
Outside Air Temperature to enable the backup heater logic (see section
5.4
4.2.2 Network Ctrl
This page resumes all settings (unit on/off, unit mode, temperature setpoint, capacity limit) set by
BMS when the unit is controlled from network.
Setpoint/Sub-
Menu
Default
Range
Description
Control Source=
Local
Local, Network
Determines whether on/off, cooling/heating/ice setpoint, operation mode,
capacity limit, should be commanded by local (HMI) settings or from BMS
Netwrk En SP=
-
-
Unit enable from BMS
Netwrk Mode SP=
-
-
Unit mode from BMS
Netwrk Cool SP=
-
-
Cooling setpoint from BMS
Netwrk Heat SP=
-
-
Heating setpoint from BMS
Netwrk Cap Lim=
-
-
Capacity limitation from BMS
Netwrk Ice SP=
-
-
Ice setpoint from BMS
4.2.3 Unit Cond Ctrl (W/C only)
This page resumes all settings for the unit condensing control. For more details about this
parameters and the unit condensing control logic see section 5.6.2
Setpoint/Sub-Menu
Default
Range
Description
Cnd SP Clg=
35°C
20…55°C
Condenser setpoint for cooling mode
Cnd SP Htg=
10°C
-
10…20°C
Condenser setpoint for heating mode
Cnd Act Sp=
-
-
Active condensing temperature setpoint
Cnd Ctrl Tmp=
-
-
Condensing control temperature
Output=
-
-
Actual condensing control output
Max Output=
100%
50…100%
Maximum condensing control output