Viessmann B2TB004 - Page 5

Vitodens 222-F, B2TB 19, 35, 68, 125 Installation
5
Page
Table of Contents
5461 889 - 16
Boiler Connections (continued)
Control Connections
Additional Information
Safety Connections...................................................29
Low water cut-off..................................................29
Waterside Flow........................................................30
Waterside flow (primary circuit)...............................30
Installation Examples.................................................31
System Layout 1-8...................................................32
Alternative Connection............................................40
Wiring Diagram........................................................41
Electrical Connections..............................................43
Power supply connection of accessories...................43
Connection of accessories.......................................43
Accessories Connection............................................44
Connection of accessories.......................................44
Low voltage plug X3..............................................44
Accessing the X3 Plug..............................................45
Connecting the Low-loss Header Sensor......................45
Connecting the Outdoor Temperature Sensor..............46
LON Module..........................................................47
Installing the LON module to the boiler
control board.........................................................47
Connecting the LON module cable...........................47
Routing the Connecting Cables...................................48
External 0-10 Volt Signal Connection.........................49
Connecting a 24 VAC Thermostat ..............................50
Zone Circuit Thermostat Connections .........................51
Zone Circuit Pump Connection ...................................52
Connection to boiler ............................................ 52
Connection at AMI (accessory) ..............................52
Accessory Kit..........................................................53
Closing the Boiler....................................................53
Closing the External Accessory Connection Box............54
Reinstalling the Front Enclosure Panel..........................55
Fitting the front panels...........................................55
Technical Data.........................................................56
Installation Fittings....................................................58
Lighting and Operating Instructions.............................59