OPTIMAX HE PLUS C
20
EN
cod. 3540I885 - 08/2012 (Rev. 00)
3. Service and maintenance
All adjustment, conversion, startup and maintenance operations described below must only be carried out by Qualified Per-
sonnel (meeting the professional technical requirements prescribed by current regulations).
FERROLI
declines any liability for damage and/or injury caused by unqualified and unauthorised persons tampering with
the unit.
3.1 Adjustments
Gas supply conversion
The unit can operate on natural gas or LPG and is factory-set for use with one of these two gases, as clearly shown
onthe packing and on the dataplate. If a gas different from that for which the unit is arranged has to be used, a conver-
sion kit will be required, proceeding as follows:
1. Remove the casing.
2. Open the airtight chamber.
3. Release the fixing clip C and remove gas pipe A from the fan - venturi assembly.
4. Replace
injector
B, inserted in the gas pipe, with that contained in the conversion kit.
5. Reassemble gas pipe A with the clip and check the seal of the connection.
6. Apply the label, contained in the conversion kit, near the dataplate.
7. Refit the sealed chamber and casing.
8. Modify the parameter for the type of gas:
•
put the boiler in standby mode
•
press the DHW buttons details 1 and 2 - fig.1 for 10 seconds: the display shows “P01“ flashing.
•
press the DHW buttons fig.1 details 1 and 2 - to set parameter 00 (for use with natural gas) or 01 (for use with-
LPG ).
•
press the DHW buttons details 1 and 2 - fig.1 for 10 seconds.
•
the boiler will return to standby mode
9. Check the working pressure
10. Using a combustion analyser connected to the boiler fume outlet, check that the CO 2 content in the fumes, withthe
boiler operating at max. and min. power, matches that given in the technical data table for the corresponding type
of gas.
fig. 27 - Changing the gas nozzle
