Plumbing Connections; Gas Connection; Electrical Connections; Fume Ducts - Ferroli ECONCEPT TECH 18 A Instrucciones De Uso

3.3 Plumbing connections

Important
B
The safety valve outlet must be connected to a funnel or collection pipe to pre-
vent water spurting onto the floor in case of overpressure in the heating circuit.
Otherwise, if the discharge valve cuts in and floods the room, the boiler manu-
facturer cannot be held liable.
B
Before making the connection, check that the unit is arranged for operation with
the type of fuel available and carefully clean all the system pipes.
Carry out the relevant connections according to the diagram in fig. 8 and the symbols giv-
en on the unit.
1
32.5 50
fig. 8 - Plumbing connections
1 = System delivery - 3 = Gas inlet
5 = System return - 6 = Safety valve drain
Water system characteristics
In the presence of water harder than 25° Fr (1°F = 10ppm CaCO
water in order to avoid possible scaling in the boiler.
Antifreeze system, antifreeze fluids, additives and inhibitors
When necessary, antifreeze fluids, additives and inhibitors can be used only if the man-
ufacturer of such fluids or additives guarantees that they are suitable and do not cause
damage to the exchanger or other components and/or materials of the boiler and system.
Do not use generic antifreeze fluids, additives or inhibitors that are not specific for use in
heating systems and compatible with the materials of the boiler and system.
Trap antifreeze kit for outside installation (optional)
In case of installation outside in a place partially protected for temperatures below -5°C
and to -15°C, the boiler must be fitted with the special antifreeze kit for protecting the
trap. Connect the kit to the PCB and position the heater on the trap as indicated in the
instructions provided with the kit.
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. 20. 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
30
EN
3
5
6
78.8 79.5 53.7
25.5
), use suitably treated
3
11
209 210
cod. 3540R794 - Rev. 02 - 02/2015
ECONCEPT TECH 18 A

3.4 Gas connection

B
Before making the connection, ensure that the unit is arranged for operation
with the type of fuel available.
The gas must be connected to the relevant connection (see fig. 8) in conformity with the
current standards, using a rigid metal pipe or a continuous surface flexible s/steel tube
and installing a gas cock between the system and boiler. Make sure all the gas connec-
tions 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.
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. 20.
fig. 10 - 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. 11 - Examples of connection with coaxial pipes ( = Air / = Fumes)