Viessmann Vitoligno 300-P Service Instructions For Contractors page 18

Commissioning, inspection, maintenance
Further details regarding the individual steps
Pos. Description
6 Temperature sensor
7
Boiler circuit pump and
8 Thermostatic control valve
qP DHW cylinder
qQ Cylinder temperature sensor STS
qW DHW circulation pump ZP
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
18
(cont.)
Control unit connection with
number of heating circuits
1 2
sL sL
% %
sK sK
sA sA
? M1 ? M1 ? M1
gS M1 gS M1 gS M1
sÖ M1 sÖ M1 sÖ M1
1 with 2 with
solar solar
sL sL
% %
sK sK
sA sA
%Ê
wZS2
&Ê
wZS1
sF wZR1
wZR2
? M1
gS M1
sÖ M1