Shutdown; Boiler; Extraction And Conveyance Systems; Control System - Viessmann Vitoflex 300-RF 150 Service And Maintenance Instructions

Vitoflex 300-RF Service & Maintenance

Shutdown

Boiler

Heat exchanger:
- When the Vitoflex 300-RF is not in operation for a
long period (such as for summer breaks), be sure to
carefully clean the heat exchanger with a steel brush
as required.
- If the heating room is moist or there is any other
atmosphere that promotes corrosion (e.g. poor
ventilation, residual enamel near the heating room,
etc.), spray the heat exchanger with biodiesel
after cleaning.
- If there is a danger of frost, empty the heating
system or add antifreeze.

Extraction and conveyance systems

When the Vitoflex 300-RF is not in operation for a long
period (such as for summer breaks), it is recommended to
empty the fuel extraction and conveyance system of all
fuel to avoid corrosion of the equipment and decay of the
wood fuel. Refill with new fuel after checking the system
and before the boiler startup.

Control system

Even when the Vitoflex 300-RF is not in operation for long
periods, the power supply to the control system should
not be interrupted (do not turn off the main switch).
- The "intermittent control system" switches on the
boiler pump for five seconds every 24 hours.
This prevents the pump from jamming during long
stand stills and prevents expensive repairs.
- Prevent the formation of condensation in the oxygen
sensor.
- Extend the service life of the buffer battery.

Replacing the buffer battery

The buffer battery is built in beneath the removable lid
on the control module (type Panasonic Lithium BR2330).
It is for buffering the time, date and settings.
Note: The battery needs replacing every five years.
DO NOT disconnect the main power or turn off the
main switch while changing the battery.

Ash disposal

- Ashes should be stored in covered metal containers
on non-combustible floors away from combustible
material.
- Comply with customary laws and local regulations
on ash disposal.

Disposal of the boiler

- Switch off the Vitoflex 300-RF by pressing the F1
button. When the burn-out has taken place and the
boiler has cooled down, turn off the main switch.
- Disconnect the power supply to the control cabinet.
CAUTION
DANGEROUS VOLTAGE!
Only a licensed electrician is allowed to disconnect and
dismantle the connection to the electrical network.
- Close the supply and return valves.
- Open the drain valve on the bottom of the boiler and
drain the water.
IMPORTANT
Only a qualified heating contractor may drain the boiler
and dismantle the connections to the heating system.
- Disconnect the supply pipe and return pipe from the
boiler.

Instructions regarding removal

Personnel removing equipment must be aware of the
risks and use suitable safety precautions.

Waste disposal

- Comply with customary laws and local regulations
on waste disposal.
- Contact a disposal company to dispose and recycle
waste in a environmental friendly way.
Maintenance
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