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The operating mode can be chosen in the "HMI mode":
• Automatic: delegated to the BMS/Auto-change-over (refer to the UM)
• Cooling: request for cool mode
• Heating: request for heat mode
The “Mode from” line states which element requested the current mode:
• Contact: D2 confi gurable digital input
• HMI: user interface
• BMS
• Schedul.
CAUTION
The automatic change-over mode is activated if the local mode and the BMS mode are set to “Auto”.
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0,0%
0,0%
44°C
44°C
8,0°C
8,0°C
HMI
Schedul.
Automatic
Delegate
Circuit 2
Circuit 1
Hydraulic circuit
Capacity
Load
Current setp. heat
Heating setp.
Current setp. cool
Cooling setp.
State from
Mode from
HMI state
HMI mode
Status
1/13
HMI
Schedul.
Automatic
Delegate
State from
Mode from
HMI state
HMI mode
Status
2/4
Forced heating
NO
Restart required !
After modification of value
Contacts D2
Contacts D1 ON/OFF
Contacts D1 D2
2/4
Forced heating
NO
Contacts D2
Contacts D1 ON/OFF
Contacts D1 D2
3/4
Reduced mode
Forced heating
Low shedding
None
1/4
Access
Services
Commissioning
Status
Main Menu
1/4
Services
Commissioning
Status
Main Menu
1/8
Archives
Parameters
Inputs-Outputs
Lock out
Operation hours
Deice
Manual control
Configuration
Service
1/8
Configuration
Service
1/7
Return t
20K
Commissioning
Control on
dT ret./sup. temp
Contacts D1 D2
Circuit control
Pump
Fan
Configuration
1/7
Configuration
✔
✔
✔
✔
Contacts D1 D2
13.4.2. Confi guring input D2
During installation, a switch can be connected onto the D2 digital input.
The operating mode defi ned for this input takes priority over all control systems such as the HML, BMS or calendar.
The input can be confi gured with the function values defi ned below:
• None
• Low shedding
• Forced Heating
• Reduced mode
Further information regarding this contact’s confi guration can be found in the user manual, § CASCADE OF PRIORITIES.
13.4.3. Heat/cool selection
2xBK
2xBK
2xBK
EWT
LWT
OAT
B1
M
B2
M
T1
B3
T4
D1
M
D2
EEV
T13
COM
COM
B
A
B
A
SD/N
O1
1/4
Access
Services
Commissioning
Status
Main Menu
1/4
Status
Main Menu
1/13
0,0%
0,0%
44°C
44°C
8,0°C
8,0°C
HMI
Schedul.
Automatic
Delegate
Circuit 2
Circuit 1
Hydraulic circuit
Capacity
Load
Current setp. heat
Heating setp.
Current setp. cool
Cooling setp.
State from
Mode from
HMI state
HMI mode
Status
1/3
Heating
Cooling
Automatic
HMI mode
1/13
Automatic
Delegate
HMI state
HMI mode
Status
✔
✔
Summary of Contents for 140
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