Vitoligno 300-C Installation/Service
5790 980 - 04
22
Boiler Connections
System Layout 2
(continued)
Equipment required
Pos.
Description
1
2
3
4
5
6
7
8
qZ
qU
qI
Heat source
Vitoligno 300-C with
Ecotronic
Outdoor temperature sensor ATS
Buffer tank temperature sensor PTS, top
Buffer tank temperature sensor PTS, centre
Buffer tank temperature sensor PTS, bottom
Safety equipment block with safety valve
Expansion vessel
Boiler circuit pump KKP
Return mixing valve - low temperature protection package
Low temperature protection package
qP
qQ
qW
qE
DHW heating by boiler
DHW tank
Tank temperature sensor STS
DHW pump for tank heating UPSB
DHW recirculation pump ZP
eP
Heating water buffer tank
rP
rQ
rW
rE
Heating circuit I
Heating circuit pump HKP M1 (heating circuit I)
and...
3-way mixing valve
Strap on temperature sensor
Mixing valve motor M1
tP
tQ
tW
tE
tR
Heating circuit II
Heating circuit distributor assembly, comprising:
Heating circuit pump HKP M2 (heating circuit II)
and...
3-way mixing valve
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
uP
uQ
uW
uU
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 default output
ON/OFF switch