Possible Faults; Flue Connection; Important - Ferroli OPERA Instructions D'utilisation, D'installation Et D'entretien

For cascade connection
NOTE: The boiler's electronics can manage up to a maximum of 6 modules.
1. Connect the modules as shown in fig. 54 (example with 3 modules)
A 1st Module
B 2nd Module
2. Make all electrical connections (terminals 1 to 30) on Module 1
3. On the remaining modules, only connect the power supply and possibly the contacts relevant to: burner lit (300),
fault contact (301) and remote reset input (302).
Remove the jumper relevant to: Room Thermostat (72)/Remote Timer Control (139).
4. Supply electric power to the entire cascade
5. After the "FH" procedure, check correct operation of the cascade:
• Module 1: MASTER icon
• Module 2: SLAVE icon
• Module 3: SLAVE icon
If this does not occur, disconnect the power supply and check the wiring in fig. 54.
Settings
All adjustments must be made on all the modules, whereas Time Programming must be set only on Module 1.

Possible faults

If the electrical connection of a module is disconnected for any reason, module 1 will activate fault F70.
If the electrical connection of a module is disconnected for any reason, the next module will activate fault F71.

2.6 Flue connection

Important

The unit is a B23-type with combustion air drawn from the place of installation, and fume exhaust by means of a fan
(operation with flue pressurised), and must be connected to one of the discharge systems indicated below. Before pro-
ceeding with installation, check and carefully comply with the local regulations and provisions. Also, comply with the
provisions on the positioning of wall and/or roof terminals and the minimum distances from windows, walls, ventilation
openings, etc.
Manifold, ducts and flue must be suitably sized, designed and made in compliance with the current regulations. They
must be made of suitable materials, i.e. resistant to heat and corrosion, smooth on the inside and tight. In particular,
joints must be condensate proof. Also, provide for adequate condensate drainage points, connected to a trap to prevent
the condensate formed in the flues from running into the generators.
158
A
31 32 33 34 35 36 31 32 33 34 35 36
fig. 54 - Connection in cascade
cod. 3541R960 - Rev. 00 - 09/2019
B C
31 32 33 34 35 36
C 3rd Module
OPERA
EN