5698 072 - 02
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Heat Exchanger Assembly Installation
WARNING
Gas leaks can lead to explosions. Check the gas pipe
seals to ensure that there are no leaks.
For more details refer to the Installation and
Service Instructions applicable to this boiler.
Refer to the Installation and Service Instructions
to activate air bleed program.
1. Fill the boiler, bleed air and check for leaks.
2. Install burner assembly.
3. Close control unit.
4. Install front enclosure.
5. Place the boiler back in operation.
Air gap
1. Install the condensate drain pipe with a suitable
gradient. Pull the condensate hose so far out of the
boiler that no unnecessary bends are created inside
the boiler. Check tightness of siphon connection.
2. Discharge condensate from the boiler into the
drainage system, either directly or (if required) via
a neutralization unit (accessory).
Installation Instructions of Neutralization Unit
(if applicable)
IMPORTANT
Ensure the condensate drain pipe is pulled down and
positioned to allow the condensate to properly drain.
Reconnecting the Boiler
IMPORTANT
Pipe ventilation must take place between the siphon trap
and the neutralization unit (if applicable).
IMPORTANT
Do not connect the drain pipe from any other appliance,
such as water softener backwash pipe, to Vitodens con-
densate drain pipe.
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