Riello Start Aqua Condens 25/60 BIS, Installer And User Manual

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Start Aqua Condens 25/60 BIS
26
The electrical wiring to the external probe is made with a bipolar ca-
ble with a section from 0.5 to 1 mm
2 (not supplied), with a maximum
length of 30 metres. It is not necessary to respect the polarity of the
cable when connecting it to the external probe. Avoid making any
joints on this cable however; if joints are absolutely necessary, they
must be watertight and well protected.
Any ducting of the connection cable must be separated from live ca-
bles (230V AC).
FIXING THE EXTERNAL PROBE TO THE WALL
The probe must be fixed on a smooth part of the wall; in the case of
exposed brickwork or an uneven wall, look for the smoothest possi-
ble area (fig. 11).
- Loosen the plastic upper protective cover by turning it anticlock-
wise.
- After deciding on the best fixing area of the wall, drill the holes for
the 5x25 wall plug.
- Insert the plug in the hole.
- Remove the card from its seat.
- Fix the box to the wall, using the screw supplied.
- Attach the bracket, then tighten the screw.
- Loosen the nut of the cable grommet, then insert the probe con-
nection cable and connect it to the electric clamp.
To make the electrical connection between the external probe and
the boiler, refer to the “Electrical wiring” chapter.
Remember to close the cable grommet well, to prevent any air
humidity getting in through the opening.
- Put the board back in its seat.
- Close the plastic upper protective cover by turning it clockwise.
Tighten the cable grommet very well.
3.10 Electrical wiring
The
Start Aqua Condens 25/60 BIS
boiler leaves the factory com-
pletely wired and only need to be connected to the mains power sup-
ply (using the supplied power cable) and the ambient thermostat (TA)
and/or timer, via relevant terminals.
- Set the system's main switch to "off"
- Loosen the screws (
B
) that hold the housing in place (fig. 12)
- Move the base of the shell forward and then upwards in order to
free it from the frame (fig. 13)
- Turn the instrument panel forward
- Unscrew the two screws of the small cover on the electronic board
to have access to the terminals (fig. 14).
Safety low voltage ambient thermostat input (clean contact).
In case of power supply between phases, check with a tester
which of the two wires has a greater potential in relation to the
earth and connect it to the L and similarly connect the remain-
ing wiring to the N.
The earth conductor must be a couple of cm longer than the
others.
The boiler can operate with a phase-neutral or phase-phase
supply. For floating power supplies, i.e. that are not connected
to ground/earth at origin, an isolating transformer with earth-an-
chored secondary must be used.
Mandatory items:
- use an omnipolar magnetothermic switch, feeder discon-
nector, compliant with CEI-EN 60335-1 standards (contact
opening of at least 3.5mm, category 3)
- use cables with a section
≥
1.5mm 2 and comply with the con-
nection L (phase) - N (Neutral)
- the switch amperage must be adapted to the electric output
of the boiler, refer to technical data to check the electric out-
put of the model installed
- connect the appliance to an effective grounding system
- safeguard access to the power socket after the installation
It is forbidden to use gas and water pipes for grounding the
unit.
The manufacturer is not liable for any damage caused by fail-
ure to comply with the wiring diagrams.
The installer is responsible for ensuring the appliance is suita-
bly earthed; the manufacturer will not be liable for any damage
resulting from an incorrect or absent earth connection.
3.11 Boiler configuration
The electronic board has a number of jumpers (JPX) that allow to
configure the boiler.
To access the board, proceed as follows:
- Set the main system switch to OFF
- Loosen the screws (
B
) that hold the housing in place (fig. 12)
- Move the base of the shell forward and then upwards in order to
free it from the frame (fig. 13)
- Turn the instrument panel forward
- Unscrew the two screws of the small cover on the electronic board
to have access to the terminals (fig. 14).
JUMPER JP7
: pre-selection of the most appropriate heating temper-
ature adjustment field based on the type of system.
Jumper not on - standard system:
Standard system 40-80 °C
Jumper on - floor system
: Floor installation 20-45°C.
During manufacture, the boiler is configured for standard systems
(fig. 15).
JP1 Calibration (Range Rated)
JP2 Heating timer reset
JP3 Calibration (see paragraph “Adjustments”)
JP4 Jumper on. Do not modify.
JP5 Jumper on. Do not modify.
JP6
Enable night-time compensation and continuous pump
function (only with outdoor probe connected)
JP7
Enable standard system/low temperature
management (see above)
JP8 No jumper. Do not modify.
3.12 Gas connection
The connection of the
Start Aqua Condens 25/60 BIS
boiler to the
gas supply must be carried out in compliance with current installation
standards.
Before carrying out the connection, it is necessary to ensure that:
- The gas type is suitable for the appliance
- The piping is thoroughly clean.
The gas feeding system must be adapted to the boiler output
and must be equipped with all the safety and control devices
prescribed by the current standards. the use of a filter of ade-
quate dimensions is recommended.
Once the installation is done, check that the junctions carried
out are sealed.
3.13 Flue gas outlet and combustion air suction (fig. 16-17-
18-19-20)
The
Start Aqua Condens 25/60 BIS
boiler must be equipped with
adequate flue gas outlet and air suction pipes according to the type
of installation, to be chosen from those indicated in the Riello cata-
logue.
(TYPE B23P-B53P) INSTALLATION
Flue gas discharge pipe ø 80mm
The flue gas outlet pipe can be directed to the most suitable direc-
tion according to installation requirements.
For installation, follow the instructions supplied with the kit.
In this configuration, the boiler is connected to the flue gas outlet
pipe of ø 80 mm through an adaptor of ø 60-80 mm.