Viessmann Vitoligno 300-P Service Instructions For Contractors page 19

Further details regarding the individual steps
Pos. Description
■ 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)
rT Heating water buffer cylinder
rZ Buffer temperature sensor above
rU Buffer temperature sensor below
Accessories (option)
tP KM BUS distributor
tQ Vitotrol 200/300
tW Radio clock receiver
tE Vitohome 300
tR Central fault messaging system S
wZ... Connection in the Vitosolic 100
Commissioning, inspection, maintenance
Control unit connection with
number of heating circuits
1 2
? M2
gS M2
sÖ M2
lª lª
l« l«
aVG aVG
aVG aVG
! !
aVG aVG
gÖ gÖ
(cont.)
1 with 2 with
solar solar
? M2
gS M2
sÖ M2
lª lª
l« l«
aVG aVG
aVG aVG
! !
aVG aVG
gÖ gÖ
19