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3.7. TROUBLESHOOTING
The boiler may overheat if:
– there is too little water in the system.
– the boiler or system are not fully vented.
– circulation in the radiators and to the hot water tank is interrupted (mixer closed, valve
closed).
– the pump is stationary.
– the combustion controlling mechanism is set too high.
– the ash door is open.
– the draught regulator is set too high.
If the thermal process safeguard is connected to the built-in thermal safety device, the thermo
valve sensor allows
coolant to flow at a boiler water temperature of more than 95°C. This
prevents the boiler from overheating further.
Important note!
Action to take in the event of overheating when the thermal process safeguard is not working:
– Open all hydraulic blocking organs (mixers, valves).
– Close draught regulator.
– Close the ash door.
If none of these actions bring the desire result, remove the firebed.
3.7.1. BOILER OVERHEATING
3.7.2. FLUE GAS ESCAPING
Flue gas escapes when the flue draught is too low.
Remedy for flue gas escaping when heating up:
– Close ash door, put hinged flap in STARTUP FIRING position (image
3
).
– In the event of low-pressure weather conditions: use paper to pre-heat the flue (flue
cleaning door) to remedy
overpressure in the flue.
Remedy for flue gas escaping when replenishing:
– You were replenishing too soon, i.e. there is still too much material in the boiler – it is best to
wait until there
are just embers.
– Before opening the filling door, the draught regulator can be fully closed, then wait a few
minutes before
opening the heating doors.
Remedy for flue gas escaping permanently:
– Set the fuel economy slider no higher than the centre, and below if necessary.
– Have the flue draught checked by a chimney sweep during use. This must be ( see
technical data regarding the chimney pressure for each type of the boiler) mbar. If this
draught is
not reached during operation, you should talk to your chimney sweep /
installer about renovating the chimney.
Troubleshooting
45
Technical data
BIO-PEK B 17, 23, 29
ENG
Содержание BIO-PEK 17 B
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