SERVICE MANUAL
© ISA, s.r.o. 2014-2015. All rights reserved.
We reserve the right to change the specification without prior notification.
Always check for new version of this document@
Service manual V1.08 | Nov-2015 | LM0002-EN
Page 48 of 97
every 600s. Code explanation:
1 - water temperature sensor (OK/ERR)
2 - outside temperature sensor (OK/ERR)
4 - ext. system temperature sensor (OK/ERR)
8 - pH electrode (OK/ERR)
16 - ORP electrode (OK/ERR)
10/2/15
LVLØ Minimum Sensors Sending Interval Input (s)
control of
value EIS5
2 Byte
W
7.005
Control interval for sending measured values (temperatures, CLF,
pH, ORP) to bus. Applies only to sensors.
NOTE:
Details are documented in “KNX bus communication” section 6.
For examples of KNX communication see section 6.4.
3.13
Outside temperature measurement
3.13.1
Overview
For detection of outside temperature, LVLØ uses 1-wire temperature sensor. 1-Wire is a device
communications bus that provides low-speed data, signaling, and power over a single signal. Installation of
temperature sensor in outdoor areas is ideal at the north side of a building or in a protected place. In case
of direct solar radiation, a sunshade protector should be used. In case of cooling, the outdoor temperature
sensor enables an advanced level of modulation, achieving an additional level of efficiency.
NOTE:
If cooling is enabled, external temperature sensor can force filtration pump to start when the
outside temperature is less than the water temperature and the desired water temperature is less
as actual. For more details read section 3.15 Heating.
3.13.2
Electrical connection
If internal sensor is used instead of KNX, outside temperature sensor needs to be connected to LVLØ
“OUTSIDE TEMPERATURE” terminal input.
Standard 1-wire cable
DQ –
Data – White or yellow wire
GND – Ground – Black wire
+5V –
VDD – Red wire
For detailed specification refer to
, connector position details are in section
