Robur Supercromo, Installation, Use And Maintenance Manual

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First start-up
18
5
necessary perform the adjustment again.
7. Disconnect the pressure gauge and refit the sealing
screw.
8. Connect the grounding cable of the casing and reas-
semble the casing.
Figure 5.1 Valve assembly
A Pressure intake
B
Pressure regulator
A
B
Table 5.1
Burner gas pressure
3001 3002
Installation data
Burner gas
pressure
Nominal
heat input
G20 mbar 10,0
G25 mbar 9,0
G30 mbar 28,8
G31 mbar 36,7
5.2.2
LPG supply
For LPG supply, the gas-fired convector must be converted
from natural gas to LPG by using the supplied gas change
kit and following the instructions in Paragraph 5.3
p. 18.
When operating with LPG gas, the maximum operating
pressure depends only on the network pressure, which
must be as indicated in Table 3.1
p. 11.
The reduction of the pressure in the network is
possible following the instructions in Paragraph
3.3.6
p. 12.
To adjust the gas-fired convector for operation with LPG,
proceed as described below.
Figure 5.1 p. 18
1. Remove the casing from the frame and disconnect the
casing grounding cable.
2. Connect a pressure gauge to the pressure intake A, af-
ter removing its sealing screw.
3. Switch on the appliance (Paragraph 6.3.1 p. 20).
4. Turn the thermostat to the highest heat demand.
5. Adjust the gas pressure at the burner to the required
value (Table 5.1 p. 18) by excluding pressure regula-
tor B (by fully tightening its screw) and adjusting the
second stage regulator if necessary.
6. When the adjustment is complete, switch off the
appliance.
After the adjustment, stop and start the appliance
and check that burner pressure has stabilised. If
necessary perform the adjustment again.
7. Disconnect the pressure gauge and refit the sealing
screw.
8. Connect the grounding cable of the casing and reas-
semble the casing.
5.3 GAS CHANGEOVER
Paragraph reserved exclusively to TACs.
After the gas changeover, check the combustion
parameters as described in Paragraph 5.2 p. 17.
Check that the gas supply line is suitable for the
new fuel type used to supply the unit.
5.3.1 Conversion from natural gas to LPG
Figure 5.2 p. 19
1. Cut off electric power and gas supply.
2. Remove the casing from the frame and disconnect the
casing grounding cable.
3. Unscrew the B plug with a no. 19 wrench.
4. Using a no.10 socket wrench introduced in the open-
ing, unscrew the nozzle holder A.
5. Unscrew the calibrated nozzle C from the nozzle hold-
er A and replace it (Table 5.2 p. 18).
6. Screw the nozzle support and nozzle assembly back
on to the burner.
7. Reassemble the plug B.
8. Turn on the gas-fired convector and check the gas
tightness of plug B.
9. Check the gas pressure at the burner as described in
Paragraph 5.2.2 p. 18.
10. Remove the "NATURAL GAS" adhesive label and re-
place it with the "LPG" adhesive label.
11. Connect the grounding cable of the casing and reas-
semble the casing.
Table 5.2
Gaz nozzles
3001 3002
Installation data