Viessmann Vitoligno 300-P Service Instructions For Contractors page 14

Commissioning, inspection, maintenance
Further details regarding the individual steps
Pos. Description
qE Circulation pump for cylinder heating
UPSB
qR Cylinder temperature sensor STS
■ with integral solar control unit (sys-
tem with 1 heating circuit with mixer)
■ with external solar control unit
Vitosolic (system with 2 heating cir-
cuits with mixer)
qT
High limit safety cut-out
wP Solar collectors
wQ Collector temperature sensor
■ with integral solar control unit (sys-
tem with 1 heating circuit with mixer)
■ with external solar control unit
Vitosolic (system with 2 heating cir-
cuits with mixer)
wW Solar-Divicon
wE Solar circuit pump
wR Circulation pump
wT Automatic thermostatic mixing valve
wZ Vitosolic 100 (for systems with 2 heat-
ing circuits with mixer)
eP Heating circuit I
eQ Flow temperature sensor
eE Mixer motor DN 20 to 50, R½" to
R1¼"
eW
Heating circuit pump M1 (heating cir-
cuit I)
rP Heating circuit II
rQ Thermostat for underfloor heating sys-
tem
■ Immersion thermostat
■ System thermostat
rW Flow temperature sensor
rR Mixer motor DN 20 to 50, R½" to
R1¼"
rE Heating circuit pump M2 (heating cir-
cuit II)
14
(cont.)
Control unit connection with
number of heating circuits
1 2
sA sA
? M1 ? M1
gS M1 gS M1
sÖ M1 sÖ M1
? M2
gS M2
sÖ M2
1 with 2 with
solar solar
sA sA
%Ê
wZS2
&Ê
wZS1
sF wZR1
wZR2
? M1 ? M1
gS M1 gS M1
sÖ M1 sÖ M1
? M2
gS M2
sÖ M2