Fitting The Boiler To The Wall Mounting Bracket - Viessmann B1HF Installation And Service Instructions Manual

Mounting the boiler and making connections
2. Suspend the Vitodens from the wall mounting
bracket.
Note
After mounting, ensure correct seating.
3. Note
Only remove the locking clip under the gas pipe
union nut once the appliance has been installed.
Clip is no longer required.
4. Tighten union nuts so that they form a tight seal.
Tighten the union nuts as tightly as necessary and
ensure that the components are undamaged and
are functioning correctly throughout service life.
Observe torque settings if a torque wrench is avail-
able.
Check for gas tightness to BSI 6891.
Torque settings:
Union nuts G : 30 Nm
■
¾
■ Union nuts G : 24 Nm
½
When carrying out any work on gas connection fit-
tings, hold with a suitable tool. Never transfer any
forces to the internal components.

Fitting the boiler to the wall mounting bracket

Note
Various installation components can be found in a sep-
arate pack. Keep the installation components safe, as
they will be required for later installation.
(cont.)
5. Tighten locking ring fittings so that they form a tight
seal:
One turn beyond finger-tight.
Installation sequence
17