Gas Connection; Electrical Connections - Ferroli ECONCEPT TECH 18 A Instructions D'utilisation, D'installation Et D'entretien

ECONCEPT TECH 18 A
Connection to a storage tank for domestic hot water
The unit's PCB is arranged for managing an external storage tank for domestic hot water
production. Make the plumbing connections according to the diagram of fig. 9. Make the
electrical connections as shown on the wiring diagram in fig. 19. It is necessary to use
the kit code 1KWMA11W. At next lighting, the boiler control system recognises the pres-
ence of the hot water tank probe and automatically configures the DHW function, activat-
ing the display and relevant controls.
8
9
10
fig. 9 - Connection to external hot water tank diagram
8 Domestic hot water outlet
9 Cold water inlet
10 System delivery
11 System return
209 Hot water tank delivery
210 Hot water tank return

3.4 Gas connection

The gas must be connected to the relevant connection (see fig. 8) in conformity with cur-
rent 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 cable) when making connections to the electric
line.
B
The user must not change the unit's power cable. If the cable is damaged,
switch off the unit and have it replaced by professionally qualified personnel. If
replacing the power cable, only use "HAR H05 VV-F" 3x0.75 mm2 cable with
max. outside 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
devices from their cutoff contacts. Their power supply must be taken with a di-
rect connection from the mains or with batteries, depending on the type of de-
vice.
11
209
210
cod. 3540R791 - 02/2010 (Rev. 00)
Accessing electrical terminal block
Follow the instructions given in fig. 10 to access the electrical connection terminal block.
The layout of the terminals for the various connections is given in the wiring diagram in
fig. 19.
fig. 10 - Accessing the terminal block
3.6 Fume pipes
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. 11 - Examples of connection with coaxial pipes (
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 outside, to prevent condensate from
flowing back towards the unit.
Ø 100
Ø 60
041002X0
fig. 12 - Starting accessory for coaxial ducts
Table. 2 - Max. length coaxial ducts
Max. permissible length
Reduction factor
90° bend
Reduction factor
45° bend
= Air /
Ø 127
Ø 80
041006X0 041001X0
Coaxial 60/100 Coaxial 80/125
6 m 16 m
1 m 0.5 m
0.5 m 0.25 m
EN
= Fumes)
25