Re-Adjustment - Ubert RT Series User Manual

Initial Installation Procedure

4.5 Re-adjustment

Attention! Before any re-adjustment works at the unit are executed the main gas
supply has to be closed and the unit has to be unpluged firstly.
All units of our production are single examined and are adjusted for the kind of gas required by the
customer. If no indication has been made, the units are principally adjusted for fluid gas. If the unit
is to be re-adjusted it has to be observed that this is made by an approved technician or by the
Ubert service technicians. The corresponding nozzles sizes are to be find in the nozzle table. For
re-adjustment the following measures have to be made:
• Replacement of main nozzles.
• Replacement of bypass nozzle
• Adjustment of primary air.
·
Checking of function and indication of new gas type on the type plate at the front of the unit.
4.5.1 Replacement of main nozzle
·
Close the main gas supply and unplug the unit.
·
Remove reflector sheet to get access to the tie rod at the back of the burner.
·
Unlock tie rod.
·
Remove burner.
·
Unscrew the main nozzle and exchange it corresponding to the nozzle table.
·
The reassembling has to be made in reversed sequence. Afterwards, check the function.
4.5.2 Replacement of bypass- / minimum adjustment nozzle
·
Close the main gas supply and unplug the unit.
·
Pull the knob to remove it.
·
Loosen the screws at the front panel and remove the front panel.
·
The minimum adjustment nozzle is located above the valve. Adjust the minimum nozzle corre-
sponding to the nozzle table.
·
The reassembling has to be made in reversed sequence. Afterwards, check the function.
4.5.3 Adjustment of minimum position
For liquid propane gas and natural gas please learn the size of minimum adjustment nozzle from
the nozzle table. For liquid propane gas the corresponding nozzles have to be turned against the
stop. For natural gas the nozzle has to be unscrewed 1-2 thread revolutions
printed: 03/2012 Subject to change!
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