Riello Start Aqua Condens 25/60 BIS Installer And User Manual page 26

Start Aqua Condens 25/60 BIS
3.6 Boiler installation
For correct installation, keep in mind that (fig. 5):
- the boiler must not be placed above a stove or other cooking
appliance
- it is forbidden to leave inflammable products in the room where
the boiler is installed
- heat-sensitive walls (e.g. wooden walls) must be protected with
proper insulation
- the minimum clearances for technical and maintenance
interventions must be respected.
The boiler is supplied with a pre-assembly template which allows
for realising the connections to the heating and domestic hot water
system without the boiler, which may be subsequently assembled,
standing in the way.
Connect the discharge manifold to a suitable discharge system (for
details, see chapter "Discharge manifold").
FIXING OF THE PRE-ASSEMBLY TEMPLATE
The Start Aqua Condens 25/60 BIS boiler is designed and built to
be installed in heating and domestic hot water systems.
The position and dimension of hydraulic fittings are shown in the
drawings (fig. 6).
- Position the plate with the aid of a spirit level: check the correct
horizontal plane and the planarity of the boiler rest surface; make
it thicker if needed.
- Trace the fixing points.
- Remove the template and carry out the drilling.
- Fix the plate to the wall using appropriate plugs.
- Check the correct horizontality with a spirit level.
FIXING THE BOILER
- Hook the boiler to the brackets on the plate.
3.7 Hydraulic connections (fig. 7-8-9)
Connect the fittings and gaskets supplied with the system.
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.
Connect brass taps supplied to the fittings and the boiler.
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.
9
A carrying case kit is available that allows to make connections
quickly and without unnecessary waste on each system.
M
Heating delivery 3/4"
R
Heating return line 3/4"
G
Gas 3/4"
SC Discharge manifold
AF
Cold water inlet 1/2"
AC
Hot water outlet 1/2"
3.8 Discharge manifold
The discharge manifold collects: condensate water, any evacuation
water from the safety valve and the system discharge water (fig. 10).
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The manifold must be connected via a rubber pipe (not
provided) to an appropriate collection and evacuation system
in the white water discharge drain in compliance with current
regulations. The outer diameter of the manifold is 20 mm: it is
therefore advisable to use a rubber pipe ø18-19 mm closed
with a suitable clamp (not provided).
9
Regularly check that the discharge manifold is not blocked by
solid residues that might prevent the outflow of condensate
water.
9
The manufacturer is not liable for any damage resulting from
the failure to channel the condensate.
9
Sealing of the condensate drainage connection line must be
guaranteed.
9
The boiler manufacturer is not responsible for any floods
caused by the intervention of the safety valves.
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3.9 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
direct 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
cable with a section from 0.5 to 1 mm
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
cables (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
possible area (fig. 11).
- 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
connection 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.
3.10 Electrical wiring
The Start Aqua Condens 25/60 BIS boiler leaves 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.
- 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).
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 earth conductor must be a couple of cm longer than the
others.
9
The boiler can operate with a phase-neutral or phase-phase
supply.
(not supplied), with a
2