Gas Connection; Electrical Connections; Fume Ducts - Ferroli ECONCEPT TECH 25 C Instructions D'utilisation, D'installation Et D'entretien

3.4 Gas connection

The gas must be connected to the relevant connection (see fig. 8) in conformity with current
standards, with a rigid metal pipe or with a continuous surface flexible s/steel tube, installing
a gas cock between the system and boiler. Make sure all the gas connections are tight.

3.5 Electrical connections

B
The unit must be connected to an efficient earthing system in accordance with
current safety standards. Have the efficiency and suitability of the earthing sys-
tem checked by professionally qualified personnel; the Manufacturer declines
any liability for damage caused by failure to earth the system.
The boiler is prewired and provided with a "Y" type cable (without plug) for con-
nection to the electric line. The connections to the mains must be made with a
permanent connection and equipped with a double-pole switch with contact
opening of at least 3 mm, installing fuses of max. 3A between the boiler and the
line. Make sure to respect the polarities (LINE: brown wire / NEUTRAL: blue
wire / EARTH: yellow/green wire) for connections to the electric line.
B
The user must not change the unit's power cable. If damaged, switch off the unit
and have the cable replaced by professionally qualified personnel. If replacing
the power cable, only use "HAR H05 VV-F" 3x0.75 mm2 cable with max. out-
side diameter of 8 mm.
Room thermostat (optional)
B
IMPORTANT: THE ROOM THERMOSTAT MUST HAVE VOLTAGE-FREE
CONTACTS. CONNECTING 230V TO THE ROOM THERMOSTAT TERMI-
NALS WILL PERMANENTLY DAMAGE THE PCB.
When connecting a time control or timer, do not take the power supply for such de-
vices from their cutoff contacts. Their power supply must be taken with a direct con-
nection from the mains or with batteries, depending on the type of device.
Accessing electrical terminal block
Follow the instructions given in fig. 9 to access the electrical connection terminal block. The
layout of the terminals for the various connections is given in the wiring diagram in fig. 22.
fig. 9 - Accessing the terminal block

3.6 Fume ducts

Important
The unit is "type C" with sealed chamber and forced draught; the air inlet and fume outlet
must be connected to one of the following extraction/suction systems. Before installation,
check and carefully observe the above prescriptions. Also, comply with the provisions
concerning the positioning of wall and/or roof terminals and the minimum distances from
windows, walls, vents, etc.
Connection with coaxial pipes
fig. 10 - Examples of connection with coaxial pipes (
Table. 2 - Typology
Type Description
C1X Wall horizontal exhaust and inlet
C3X Roof vertical exhaust and inlet
34 EN
ECONCEPT TECH 25 C - 35 C
For coaxial connection, fit the unit with one of the following starting accessories. For the
wall hole dimensions, refer to the figure on the cover. Any horizontal sections of the fume
exhaust must be kept sloping slightly towards the boiler, to prevent possible condensate
from flowing back towards the outside and causing dripping.
Table. 3 - Max. length coaxial ducts
Max. permissible length
Reduction factor 90° bend
Reduction factor 45° bend
Connection with separate pipes
fig. 12 - Examples of connection with separate pipes (
Table. 4 - Typology
Type
C1X
C3X
C5X
C6X
B2X
For the connection of separate ducts, fit the unit with the following starting accessory:
= Air / = Fumes)
Before installation, check the baffle to be used and make sure the maximum permissible
length has not been exceeded, by means of a simple calculation:
1. Establish the layout of the system of split flues, including accessories and outlet terminals.
2. Consult the table 6 and identify the losses in m
ponent, according to the installation position.
3. Check that the sum total of losses is less than or equal to the maximum permissible
length in table 5.
cod. 3540R812 - 06/2011 (Rev. 00)
Ø 100 Ø 127
Ø 60 Ø 80
041002X0 041006X0
fig. 11 - Starting accessory for coaxial ducts
Coaxial 60/100
0.5 m
C
5x
Description
Wall horizontal exhaust and intake. The inlet/outlet terminals must be concentric or close enough to be
undergo similar wind conditions (within 50 cm)
Roof vertical exhaust and intake. Inlet/outlet terminals like for C12
Wall or roof exhaust and intake separate or in any case in areas with different pressures. The exhaust
and intake must not be positioned on opposite walls.
Intake and exhaust with separately certified pipes (EN 1856/1)
Intake from installation room and wall or roof exhaust
IMPORTANT - THE ROOM MUST BE PROVIDED WITH APPROPRIATE VENTILATION
041003X0
fig. 13 - Starting accessory for separate ducts
041001X0
Coaxial 80/125
5 m 15 m
1 m 0.5 m
0.25 m
B C
2x 1x
= Air / = Fumes)
(equivalent metres) of every com-
eq