SERVICE MANUAL
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Service manual V1.08 | Nov-2015 | LM0002-EN
Page 52 of 97
entry and change as needed. If filtration mode is in Custom mode and actual time is within defined entry,
status will be changed to active, otherwise is inactive.
Ignore ext. system temp.: <enabled/disabled> When set to enabled, LVLØ is ignoring external temperature
sensor (sensor can be left disconnected) and drives the output always when the water temperature is
bellow set point + Hysteresis.
After performing setup or any changes to this section, click „SAVE SETTINGS” to save configuration to
system.
3.15.4
KNX communication objects
LVLØ can fully control heating feature via KNX. It is possible to remotely change set point for water
temperature, change hysteresis, enable or disable cooling.
It is possible to control LVLØ “3 WAY VALVE” terminal output via KNX with priority. This is useful when LVLØ
is integrated in smart house with smart heating controller that can directly control 2-Way or 3-Way valves
and override settings in LVLØ. For example when heating pump need to boost heat into the pool.
Group
Address
Data Point Name
Data Point Type
Description
10/2/4
LVLØ Water Temperature Setpoint Input °C
control EIS5
2 Byte
W
9.001
Control water temperature setpoint from KNX.
Floating value (°C) will adjust desired water temperature.
10/2/5
LVLØ Water Temperature Setpoint Output
display of
value EIS5
2 Byte
R
9.001
Display actual water temperature setpoint value.
Floating value (°C) is cyclically sent to bus every 600s.
10/2/6
LVLØ Water Temperature Setpoint Hysteresis Input °C
control EIS5
2 Byte
W
9.001
Floating value (°C). Control hysteresis of the 2-step heating/cooling
controller for water temperature from KNX. Setting rule: Small
hysteresis leads to small fluctuations, but frequent switching.
Large hysteresis leads to big fluctuations, but infrequent switching.
10/2/7
LVLØ Water Temperature Setpoint Hysteresis Output °C
display of
value EIS5
2 Byte
R
9.001
Display actual setpoint hysteresis temperature.
Floating value (°C) is cyclically sent to bus every 600s.
10/2/8
LVLØ Cooling Enable Control (Send 1/0)
control pulse
edge 1/0
1 bit
W
1.001
Actuator to enable/disable water cooling feature. Toggle current
output status when pulse edge telegram (0/1) will be received on
this input. Status feedback will be send when output changes
state.
10/2/9
LVLØ Cooling Status Feedback (0=Disabled;1=Enabled)
display of
status
1 bit
R
1.001
Status feedback of the cooling feature output.
10/2/14
LVLØ Heating Valve Control (Send 1/0)
control pulse
edge 1/0
1 bit
1.001
Actuator to control "3 WAY VALVE" output. Toggle current output
state (open/closed) when pulse edge telegram (0/1) will be
received on this input. Use this input to control heating valve from
master heating system. This communication object has priority and
will override LVLØ setting (set point temperature and hysteresis
will be ignored).
For external visualization, it can be also useful to show actual temperature values.
Group
Address
Data Point Name
Data Point Type
Description
10/0/0
LVLØ Water Temperature Output °C
display of
value EIS5
2 Byte
R
9.001
Display
actual
water
temperature.
Floating value (°C), cyclically send to bus.
10/0/2
LVLØ Outside Temperature Output °C
display of
value EIS5
2 Byte
R
9.001
Display
actual
outside
temperature.
Floating value (°C), cyclically send to bus.
10/0/15
LVLØ Current External System Temperature Output °C
display of
value EIS5
2 Byte
R
9.001
Display actual temperature of external heating/cooling system.
Floating value (°C) is cyclically sent to bus.
NOTE:
Details are documented in “KNX bus communication” section 6.
For examples of KNX communication see section 6.4.
