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Boiler Connections
Connections
When utilizing the combustion air inlet seal A for Vitodens
200 B2HB boilers, remove the inlet seal A, tear out center
section and install the remaining rubber seal back into the air
inlet opening.
Legend
A Combustion air
B Flue gas exhaust
18
Vitodens 200-W B2HB 19 to 35, 68 to 125 Installation
Connecting power
The Vitodens 200-W boiler has an external accessories
connection box installed, which requires a 120VAC/12A
power supply. Refer to the wiring diagram (see page 45).
Boiler venting
The Vitodens 200-W B2HB boiler comes with a pre-installed
vent pipe adaptor.
Run venting system, single-wall or coaxial, through the
side wall or the roof, taking the shortest possible route
and at a rising angle (min. 3º).
WARNING
Remove outer gasket if single wall (boiler room air
dependant) venting system is used.
Proper piping practice
Support piping by proper suspension method. Piping
must not rest on or be supported by boiler. Use moderate
amount of dope.
2 imperfect threads
Gas shut-off valve connection
1. Make gas connections in accordance with codes
CAN/CSA B149.1 and .2 or National Fuel Gas Code
ANSI Z223.1/NFPA 54, as well as local codes.
2. Connect gas shutoff valve to the boiler gas
connection.
3. Once connected close gas shutoff valve on boiler.
See following page for details on gas
connection and piping.
Manual gas shutoff
Open
Leave 2 threads bare
Closed
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