Viessmann B2HB 45 Installation Instructions Manual page 5

Vitodens 200-W B2HB 45, 57 Installation
Boiler Connections
Control Connections
Additional Information
(continued)
Safety Connections and Pressure Testing.....................29
Installing boiler safety devices.................................29
Low water cut-off..................................................30
Performing a boiler pressure test.............................30
Waterside Flow........................................................30
Waterside flow (primary circuit)...............................30
Installation Examples.................................................32
General.................................................................32
Clearances............................................................32
System Layout 1-9...................................................33
Alternative DHW Connection....................................42
Boiler in Heating/Cooling............................................43
Boiler in heating/cooling application..........................43
Boiler with Low Water Cut-off..................................44
Boiler with low water cut-off (remote-mounted
field supplied)........................................................44
Venting Connection.................................................42
Electrical Connections..............................................43
Power supply connection of accessories...................43
Connection of accessories.......................................43
Overview of Electrical Connections,
Models B2HB 45 and 57...........................................44
Accessing the X3 Plug..............................................48
Connecting the Low-loss Header Sensor......................48
Connecting the Outdoor Temperature Sensor..............49
External 0-10 Volt Signal Connection.........................50
24 VAC Thermostat Connection...............................51
LON Module..........................................................52
Installing the LON module to the boiler
control board.........................................................52
Connecting the LON module cable...........................52
Accessory Kit..........................................................53
Accessory kit connections for heating circuit
with mixing valve..................................................53
Closing the Control Unit............................................53
Closing the control cover .......................................52
Closing the External Accessory Connection Box............53
Reinstalling the Front Enclosure Panel..........................55
Instructing the system user.....................................55
Technical Data.........................................................57
Installation Fittings....................................................59
Lighting and Operating Instructions.............................60
Table of Contents
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