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FA ROTEX A1 BGe - 02/2014
7
x
Gas burner
7.3.4 Resetting the gas type
The burner is factory set to the gas type indicated on the yellow
sticker on the burner housing or on the settings type plate
(fig. 7-5).
Resetting from natural gas E/H to natural gas LL/L
1. Open adjusting screw for gas/air mixture (fig. 7-3, item 11)
2 rotations
anticlockwise.
2. Set burner (see section 7.3.2).
3. A gas type changeover and the adjusted thermal load must
be entered on the settings type plate and in the operating
manual and confirmed with signature.
4. Place the device sticker for LL/L gas setting (in scope of
supply) on the fan housing of the burner.
Resetting from Liquid petroleum gas to natural gas
1. Switch off the ROTEX A1 and secure against restart.
2. Remove the plug from the gas regulation block (fig. 7-6,
step 1).
3. Disconnect the air intake pressure hose (fig. 7-3, item 21)
from the safety gas control block (fig. 7-2, item 3).
4. Unscrew the Venturi nozzle with the safety gas control block
from the burner blower (fig. 7-6 step 2) and remove it
(fig. 7-7).
5. Unscrew and remove the 3 bolts that bolt down the venturi
nozzle to the safety gas control block (fig. 7-8, step 1).
6. Take of the venturi nozzle (fig. 7-8, step 2).
7. Remove the brass bezel between the safety gas control block
and the venturi nozzle (fig. 7-8, step 3).
8. Using the 3 screws, screw the Venturi nozzle back on the
safety gas control block and then onto the burner fan. Special
attention must be paid to ensuring that the cork seal is
undamaged and correctly seated.
9. Replace the cable plug of the automatic firing unit to the gas
regulation block and place the air suction hose onto the safety
gas regulation block.
10. Start the burner check for leakage and adjust
(see section 7.3.2).
If necessary, adjust the performance limits (see tab. 7-2,
tab. 7-3 and section 7.3.5).
11. A gas type changeover and the adjusted thermal load must
be entered on the settings type plate and in the operating
manual and confirmed with signature.
12. Apply the equipment sticker for natural gas E/H or natural gas
LL/L (obtainable from ROTEX) to the burner housing.
WARNING!
Live parts can cause an electric shock on contact and
cause fatal burns or injuries.
Ɣ
Before beginning maintenance work, disconnect
the ROTEX A1 from the power supply (switch off
fuse, main switch) and secure against uninten-
tional restart.
Fig. 7-6
Unscrew the Venturi nozzle with the safety gas control block
Fig. 7-7
Remove the Venturi nozzle with the safety gas control block
Fig. 7-8
Unscrew and remove the venturi nozzle and take off the brass
bezel
