Viessmann VITOLIGNO 300-C Installation And Service Instructions Manual page 16

Boiler Connections
System Layout 1
Equipment required
Pos. Description
Heat source
1 Vitoligno 300-C with
Ecotronic
2
3 Outdoor temperature sensor ATS
4 Buffer tank temperature sensor PTS, top
Buffer tank temperature sensor PTS, centre
5
6 Buffer tank temperature sensor PTS, bottom
Safety equipment
7
Expansion vessel
8
qZ Boiler circuit pump KKP
Return mixing valve - low temperature protection package
qU
qI Low temperature protection package
DHW heating by boiler
Dual mode DHW tank
qP
Tank temperature sensor STS
qQ
DHW pump for tank heating UPSB
qW
DHW recirculation pump ZP
qE
Circulation pump for transfer of heat
qT
DHW heating by solar thermal system
Solar collectors
wQ
Solar Divicon
wW
Solar circuit pump R1
wE
wR Set of temperature sensors for solar circuit
– Collector temperature sensor KOL
wT
– Tank temperature sensor SOL
wZ
wU High limit safety cut-out HLSC
DHW tempering valve
wI
Heating water buffer tank
eP
Heating circuit I
rP
rQ
Heating circuit, comprising:
Heating circuit pump HKP M1 (heating circuit I)
and...
3-way mixing valve
rW
Stap on supply temperature sensor
rE Mixing valve motor M1
Heating circuit II
tP
Heating circuit distributor assembly, comprising:
tQ
Heating circuit pump HKP M2 (heating circuit II)
and...
3-way mixing valve
16
(continued)
Vitoligno 300-C Installation/Service