Hydraulic Connections; Electrical Wiring - Riello Start Condens 25 Manuel D'installation Et D'utilisation

Hydraulic connections

M
86,5 65
M Heating delivery
AC Hot water outlet
G Gas
R Heating return line
AF
Cold water inlet
SC
Condensate drain
We recommend connecting the boiler to the systems introducing
both the DHW shut-off valve as well as the shut-off valves for the
heating system; for this purpose a heating system valves kit and
heating valves kit with filter is available.
9 The selection and the installation of the system components are
the responsibility of the installer, who must operate according to
the rules of good technique and current Legislation.
Condensate collection (fig. 7)
The system must be made so as to avoid any freezing of the con-
densate produced by the boiler (e.g. by insulating it). You are ad-
vised to install a special drainage collection basin in polypropylene,
widely available on the market, on the lower part of the boiler (hole
Ø 42), as shown in figure.
Position the condensate discharge hose supplied with the boiler,
connecting it to the manifold (or another examinable coupling de-
vice) without creating kinks where condensate can stagnate and
possibly freeze.
The manufacturer will not be liable for any damage resulting from
the failure to channel the condensate, or from its freezing.
The drainage connection line must be perfectly sealed, and well pro-
tected from the risk of freezing.
Before the initial start-up of the appliance, check the condensate will
be properly drained off.
2.5 - Installing the external probe (accessory)
The correct operation of the external probe is fundamental for the
good operation of the climatic control.
Installing and connecting the external probe
The probe must be installed on an external wall of the building to be
heated, observing the following indications:
• It must be mounted on the side of the building most often exposed
to winds (the NORTH or NORTHWEST facing wall), avoiding di-
rect solar irradiation;
• It must be mounted about 2/3 of the way up the wall;
• It must not be mounted near doors, windows, air outlet points, or
near smoke pipes or other heat sources.
The electrical wiring to the external probe is made with a bipolar ca-
ble with a section from 0.5 to 1mm
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
cables (230V AC).
Fixing the external probe to the wall (fig. 8)
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
possible area.
AC G R AF
50 80 65 58,5
(not supplied), with a maximum
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• Loosen the plastic upper protective cover by turning it anticlockwise.
• 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.
9 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.

2.6 - Electrical wiring

START CONDENS Kis boilers leave the factory completely wired
and only need to be connected to the mains power supply (using the
supplied power cable) and the ambient thermostat (TA) and/or timer,
via relevant terminals.
• Turn the main system switch to "OFF".
• Unscrew the housing fixing screws (A . fig. 9).
• Move the housing base forwards and then upwards to unhook it
from the frame.
• Unscrew the instrument panel fixing screws (B - fig. 10).
• Turn the instrument panel forward.
• Unscrew the fixing screws (C - fig. 11) to access the terminal
board.
9 Safety low voltage ambient thermostat input (clean contact).
9 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 remaining
wiring to the N.
9 The boiler can operate with a phase-neutral or phase-phase
supply.
9 Mandatory items:
• Use an omnipolar magnetothermic switch, feeder disconnec-
tor, compliant with CEI-EN 60335-1 standards (contact open-
ing of at least 3,5mm, category 3)
• use cables with a section ≥ 1.5mm
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 output
of the model installed
• Connect the appliance to an effective grounding system
• Safeguard access to the power socket after the installation
0 It is forbidden to use gas and water pipes for grounding the unit.
9 The manufacturer is not liable for any damage caused by failure
to comply with the wiring diagrams.
9 The installer is responsible for ensuring the appliance is suitably
earthed; the manufacturer will not be liable for any damage re-
sulting from an incorrect or absent earth connection.
2.7 - Boiler configuration
The electronic board has a number of jumpers (JPX) that allow to
configure the boiler.
To access the board, proceed as follows:
• Turn the main system switch OFF.
• Unscrew the housing fixing screws (A - fig. 9).
• Move the housing base forwards and then upwards to unhook it
from the frame.
• Unscrew the instrument panel fixing screws (B - fig. 10).
• Turn the instrument panel forward.
• Unscrew the fixing screws (C - fig. 11) to access the terminal board.
Jumper JP7 (fig. 12)
Pre-selection of the most appropriate heating temperature adjust-
ment field based on the type of system.
• Jumper not inserted: Standard system (40-80 °C).
• Jumper inserted: Floor installation (20-45°C).
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ENGLISH
and comply with the con-
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