Viessmann VITODENS 222-F Installation Instructions Manual page 5

Vitodens 222-F, B2TA 19 and 35 Installation
Boiler Connections
Control Connections
Additional Information
(continued)
Safety Connections and Pressure Testing.....................29
Low water cut-off..................................................29
Performing a boiler pressure test.............................29
Waterside Flow........................................................30
Waterside flow (primary circuit)...............................30
Installation Examples.................................................31
System Layout 1-7...................................................32
Alternative Connection............................................39
Wiring Diagram........................................................40
Electrical Connections..............................................42
Power supply connection of accessories...................42
Connection of accessories.......................................42
Accessories Connection............................................43
Connection of accessories.......................................43
Low voltage plug X3..............................................43
Accessing the X3 Plug..............................................44
Connecting the Low-loss Header Sensor......................44
Connecting the Outdoor Temperature Sensor..............45
External 0-10 Volt Signal Connection.........................48
LON Module..........................................................46
Installing the LON module to the boiler
control board.........................................................46
Connecting the LON module cable...........................46
Routing the Connecting Cables...................................47
Accessory Kit..........................................................49
Closing the Boiler....................................................49
Closing the External Accessory Connection Box............50
Reinstalling the Front Enclosure Panel..........................51
Fitting the front panels...........................................51
Technical Data.........................................................52
Installation Fittings....................................................54
Lighting and Operating Instructions.............................55
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