Shutting Down The System; Closing The Vitoair Draught Stabiliser (If Installed); Opening The Boiler Door And Cleaning Cover - Viessmann VITOPLEX 100 Service Instructions Manual

Commissioning, inspection, maintenance
Further details regarding the individual steps
12. After the flow temperature has been
reached, switch ON the heat con-
sumers in sequence and change the
burner over to automatic mode.
!
Please note
When testing the flue gas for
CO, internal gases being
expelled from the heating
block can cause higher val-
ues.
Continue to operate the
boiler until a decline can be
clearly recognised.
13. Check all gaskets and plugs, and
retighten if necessary.

Shutting down the system

Danger
Only open the connections on the
heating water side after the boiler
has been depressurised.
Only drain the boiler with a suc-
tion pump when the air vent valve
is open.

Closing the Vitoair draught stabiliser (if installed)

1. Start the burner.

Opening the boiler door and cleaning cover

Note
On gas burners, remove the gas supply
pipe.
10
(cont.)
14. Check the boiler door and cleaning
cover after approx. 50 hours run and
retighten all screws.
Danger
Opening the connections on the
heating water side whilst the
boiler is under pressure can
cause personal injury.
First depressurise the boiler.
Only drain the boiler with a suc-
tion pump when the air vent valve
is open.
2. With the pre-purge running, shut
down the system. The control disc will
then be closed.