17
5790 980 - 04
Vitoligno 300-C Installation/Service
Boiler Connections
System Layout 1
(continued)
Equipment required
Pos.
Description
tP
tW
tE
tR
Heating circuit II
(continued)
Strap on temperature sensor
Mixing valve motor M2
Temperature limiter to restrict the maximum temperature of underfloor heating systems
– Version with immersion sensor
– Version with contact sensor
zP
zQ
zW
zE
Heating circuit III
Heating circuit, comprising:
Heating circuit pump HKP M3 (heating circuit III)
and...
3-way mixing valve
Strap on temperature sensor
Mixing valve motor M3
uP
uQ
uW
uE
Heating circuit IIII
Heating circuit distributor assembly, comprising:
Heating circuit pump HKP M4 (heating circuit IIII)
and...
3-way mixing valve
Strap on temperature sensor
Mixing valve motor M4
uZ
uU
uI
uO
iQ
iW
iE
iR
Accessories
Vitotrol 200A (max. two Vitotrol 200A per Ecotronic)
or...
Vitotrol 300A (max. one Vitotrol 300A per Ecotronic)
or...
Vitotrol 350
Low water cutoff
KM BUS distributor
Output feedback
External default output
External demand
ON/OFF switch