Information On Starting Up / Shutting Down; Starting Up; Shutting Down - Viessmann Vitoflex 300-UF Series Installation And Operating Instructions Manual

Vitoflex 300-UF Installation & Operating

Information on Starting Up / Shutting Down

WARNING
Risk of injury due to untrained personnel. Only allow
trained and experienced personnel to operate the product.
Personnel under training must only work on the product
under supervision. During the heat-up phase, the heating
system must be permanently supervised by trained and
experienced personnel.
WARNING
There is a risk of deflagration when the combustion
chamber door is opened. Poking around in the firebed
leads to oxygenation, which can produce a flash. Both
can result in severe burns. Never open the combustion
chamber door whilst the system is in operation.
Before opening the combustion chamber door, ensure
that you are standing in a safe place. Never poke around
in the firebed.

Starting Up

1. Switch on the system at the programming unit using
the key.
With ignition system
(automatic)
The ignition system starts. 2. Open the combustion

Shutting Down

Without ignition system
(manual)
chamber door.
3. Light a fire inside the
combustion chamber at
the front using kindling.
4. Slide the burning kindling
into the combustion retort.
5. Close the combustion
chamber door.
CAUTION
Risk of burns due to hot system components. Only touch
handles and identified parts. Never touch sight glasses
or their retainers. The sight glasses and retainers are
connected directly to the combustion chamber.
The combustion retort is automatically filled with fuel.
The amount of fuel can be adjusted in manual mode in
"Fuel supply" (Default display > Fuel), see page 44.
The controller then switches to the "Ignition" operating
state.
Fuel with moisture content above W 40
If the fuel moisture content is above W 40, the
combustion
chamber must first be heated. Even if an ignition system
is installed, you will still need to perform steps 2 to 5
described in the above table. To keep the fire lit, add
more kindling if necessary. After one hour, start the
ignition either automatically or manually.
Ignition monitoring
The ignition is monitored by the controller. After no more
than 45 minutes, the oxygen content in the flue gas must
drop below 15% for a set period. You can adjust the
required period via the "Delay, O
If the oxygen content has dropped sufficiently, the
boiler switches to the "Load" operating state. The ignition
phase is completed.
If the oxygen content has not dropped sufficiently, the
fault message "Fault, repeat heat-up" is displayed.
Check the fuel. If necessary, use drier fuel or pre-heat.
Also check the amount of fuel. If necessary increase
the amount of fuel supplied.
Acknowledge the fault message.
Switch off the system with the
The controller switches the system off automatically.
Start-up/Shutdown
, heatup" parameter.
2
key.
43