Riello START AQUA 24 BI Manuel De L'installateur Et De L'utilisateur page 4

START AQUA 24 BI
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If a safety device is tripped, there is a boiler fault. Please
contact the Technical Assistance Service immediately.
The flue thermostat is tripped not only by a defect in the combustion
product evacuation circuit, but also by random atmospheric
conditions. Therefore, after a short wait, the boiler can be restarted
(see the chapter "First start-up").
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If the flue thermostat trips repeatedly, this means combustion
products are evacuated towards the boiler installation area.
This means combustion may be incomplete and there is a
risk of carbon monoxide forming. This is a serious hazard.
In this case, please contact the Technical Assistance Service
immediately.
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The boiler must not be operated, even temporarily, if the safety
devices are not functioning or have been tampered with.
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The safety devices must be replaced by the Technical
Assistance Service, using original manufacturer components
only. Please see the spare parts catalogue.
After repairs, always perform an ignition test.
2.2 Pump
The residual head for the heating system is represented, according
to flow rate, on the graph (fig. 1 - fig. 2). The heating system
pipelines must be sized according to the residual head available on
the system. Take into account that boiler efficiency is only ensured
when there is sufficient water circulation in the heat exchanger. For
this reason, the boiler is equipped with an automatic bypass system
that regulates the correct water flow rate in the heat exchanger
in all operating conditions. The boiler is fitted with an anti-block
function that starts an operating cycle every 24 hours of standby
with the selector set in any position.
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The anti-block function is only active if the boilers are powered
electrically.
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Never run the pump without water present.
The speed can be selected using the lever at the side of the pump.
3 - INSTALLATION
3.1 Product delivery
The START AQUA 24 BI boiler is supplied in a single box protected
by carton packaging.
The boiler is supplied with the following material:
- installer and user manual
- labels with bar code
- boiler support plate.
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The instruction manuals are an integral part of the boiler.
Please read the manuals and store them in a safe place.
3.2 Dimensions and weight (fig. 3)
START AQUA 24 BI
L
P
H
Net weight
3.3 Handling
After removing all packaging, the boiler is handled manually using
the support frame (fig. 4).
3.4 Boiler room
The boiler must be installed in rooms fitted with suitably sized
ventilation outlets compliant with current technical standards.
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Take into consideration the space that is required to access
the safety and control devices and to perform maintenance.
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Check that the appliance's electrical protection rating is
suitable for the place of installation.
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If the boiler is run on combustible gas of a specific weight
greater than that of air, the electrical parts must be positioned
at a minimum height of 500 mm from the ground.
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The boiler cannot be installed outside as it is not designed for
operation outdoors.
4
600 mm
450 mm
940 mm
56 kg
3.5 Installation in older systems or circuits requiring
renovation
When START AQUA 24 BI boilers are installed in older systems or
systems requiring renovation, ensure that:
- the flue exhaust is suitable for the temperatures produced by
combustion, calculated and built in line with the regulations, and
is as straight as possible, airtight, insulated and is not blocked or
constricted.
- the electrical system complies with the specific regulations and is
installed by qualified technicians
- the gas conveyance line and any tanks (LPG) comply with
specific regulations
- the expansion tank ensures full absorption of the expansion of
the fluid in the system
- the flow rate and useful head of the pump are suitable for the
system. It is recommended to install a magnetic filter on the
return of the system.
- the system is washed, free of dirt and build-up, de-aerated and
correctly sealed.
The manufacturer declines all liability for possible damage
caused by incorrect installation of the flue exhaust system.
In existing buildings, this natural draught boiler must only
be connected to a flue system shared by several homes to
evacuate the combustion residue outside the room where
the boiler is installed. For combustion, the boiler takes in air
directly from the room and is equipped with a draught diverter.
Due to reduced efficiency, any other use of this boiler must be
avoided at all times, as this would lead to increased energy
consumption and higher operation costs.
3.6 Boiler installation
To install the boiler correctly, please remember that (fig. 5):
- The boiler must not be installed above a stove or other cooking
equipment
- Flammable substances must not be left in the room where the
boiler is installed
- Walls sensitive to heat (for example those in wood) must be
protected with suitable insulation
- Minimum clearances must be observed to enable technical
interventions and maintenance.
- Ensure a clearance of 370 mm from the bottom of the boiler to
the cabinet. When cleaning the magnesium anode, there must
be sufficient space to enable disassembly.
PRE-ASSEMBLY TEMPLATE FIXTURE
The START AQUA 24 BI boiler has been designed and produced to
be installed in heating and domestic hot water production systems.
The position and dimensions of the hydraulic fittings are stated in
the illustrations (fig. 6).
- Position the support plate using a spirit level. Check it is
horizontally level and that the boiler support surface is flat. If
necessary, add shims to level the surface correctly.
- Mark the fixing points.
- Remove the plate and drill the holes.
- Fit the plate to the wall using suitable plugs.
- Use a spirit level to check the plate is level.
BOILER FIXTURE
- Hook up the boiler to the supports on the plate.
3.7 Hydraulic connections (fig. 7)
Connect the boiler to the system by inserting both the domestic
water shut-off valve and the heating system shut-off valves. A
specific heating system valve kit and heating valve kit with filter
are available.
DHW SYSTEM
Install a pressure reducer between the boiler and DHW supply
mains.
For special water types and to reduce the frequency of cleaning
the boiler interior and/or pipelines, install a water treatment system.
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The choice and installation of system components is left to the
discretion of the installer, who must operate according to the
rules of good technical practice and current legislation.
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The outlet of the boiler safety valve must be connected to
an adequate collection and drainage system. The boiler
manufacturer declines all liability for any flooding caused by
the safety valve.