Viessmann Vitotwin 300-W Installation And Service Instructions For Contractors page 25

Preparing for installation
Required codes
Group
Vitotwin 300-W coding addresses
"Source type"
"System scheme"
"HC1"
"HC2"
"HC3"
"Relay output QX2"
"Relay output QX4"
"Sensor input BX6"
Vitotronic 200 coding addresses
"General"
"General"
(cont.)
Code
"3750:oil/gas boiler" Oil/gas boiler (only for display pur-
"5700:3"
"5710:On"
"5715:On"
"5721:On"
"5891:Heat request
K27"
"5894:Suppl source
control K32"
"5935:Common flow
sensor B10"
"3A:3"
"61:1"
Preparing for installation
Function
poses)
System scheme 3 as standard
function
Heating circuit 1 installed
Heating circuit 2 installed
Heating circuit 3 installed
Heat request K27, diverter valve
demand, heat source 2
Additional heat source control K32
(lift block on heat source 2)
Common flow sensor B10 fitted
(common flow temperature sen-
sor)
External blocking
Cylinder primary pump on immedi-
ately
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