Commissioning and Maintenance
54 © robatherm
Burner
Put burner into operation. Observe continuous operation of supply and extract fan without
any recirculation air.
This work is only to be performed by the robatherm customer service unless an alternative
agreement has been made.
The numbers shown below refer to the figures on page 56:
Open stopcock (1), check pressure at manometer (11). It must correspond to the rated
pressure in accordance with nameplate.
Set gas pressure gauge min (9) at lowest value.
Set gas pressure gauge max (10) at highest value.
Set air pressure gauge on burner panel at lowest value.
For units with combustion air blower: Set air pressure gauge of supporting blower at
lowest value.
Set desired value of duct and room sensor and thermostats above the respective ambient
temperature.
Set control switch on switch cabinet to “heating”.
Unit will now start burner.
If there is a fault shutdown repeat start up several times (remaining air).
If there is no flame although there is gas at the burner:
Check correct venting of the gas pipe.
Check control units (6, 9, 10, 15, 16) electrically.
Check fine wire fuse of control unit.
Check electrical wiring in the switch cabinet and wiring of field units, correct if necessary.
Check ignition electrodes.
If there is only a short flame although there is gas at the burner:
Check UV diode for correct connection and discolouring, replace if necessary.
For units with ionisation control: Check ionisation rod. Where appropriate remove
contamination. Rod may not have any contact with metal parts. Check insulation body.
For units with combustion air blowers check direction of rotation of the ventilator and
reverse electrical connections if necessary.
Pos: 66.10 /Inbetri ebnahme und Wartung/Gasf lächenbrenner/ Gasflächenbrenner_IB N-und Wartungsarbei ten @ 0\mod_1258447177708 _2008.doc @ 2213 @ 4
Commissioning and Maintenance Work
The points listed below must also be included in maintenance work.
For testing of the safety temperature limiter (STL), heat the capillary by means of hot air drier
for example. Burner must switch off at set value limit and the safety temperature limiter must
lock. If this does not happen automatically, stop burner, replace STL and repeat whole test.
Unlock safety temperature limiter manually by reset button.
Check whether defined nominal airflow is set; adjust if necessary.
Adjust gas supply with on site gas meter by turning the setting screw on the pressure
regulator (3) (control damper with servo motor (7) must be fully open).
At full load (control damper (7) fully open) the pressure on the manometer must match the
rated pressure as per nameplate.
The rated value of the duct sensors or room sensor must be set lower than actual value.
Control damper (7) must close.
Set minimum gas throughput using control damper (7). For this set control signal to 0 % and
to smallest possible throughput by means of limit switch in actuator at which a homogeneous
flame pattern is still available. Check via sight glass.
Set unit back to max. capacity (open control damper (7)).
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