Riello Start Condens 25 IS Manuel D'installation Et D'utilisation page 19

9 Consider the clearances necessary to access safety and adjust-
ment devices and to perform maintenance operations.
9 Check that the electric protection level of the appliance is adapt-
ed to the installation room characteristics.
9 In case the boilers are supplied with fuel gas of a specific weight
greater than that of the air, the electric parts will have to be
placed at a level above the ground greater than 500 mm.
2.3 - Installation on appliances that are old or that
need to be updated
When the START CONDENS IS boilers are installed in old systems
or systems to refurbish, check that:
• The smoke pipe is suitable for the temperature of the combus-
tion products with condensation, calculated and built according
to Standard, is as straight as possible, airtight, insulated and has
no blockages or narrow sections. It is equipped with appropriate
condensate collection and discharge systems.
• The electrical system is installed in compliance with the specific
standards and by qualified personnel.
• The fuel supply line and eventual tank (LPG) are made according
to specific Standards.
• The expansion tank ensures the total absorption of the dilatation
of the fluid contained in the system.
• The flow rate and head of the circulator are suitable to the charac-
teristics of the system.
• The system has been washed and cleaned of mud and grime,
de-aerated and water tight.
• The boiler condensate drain system (siphon) is connected and
routed to the collection of "white" water.
• There is a treatment system for when the supply/make-up water
is particular (the values in the table can be used as reference
values).
Supply water values
pH
Electric conductivity
Chlorine ions
Sulphuric acid ions
Total iron
M alkalinity
Total hardness
Sulphur ions
Ammonia ions
Silicon ions
9 The manufacturer is not liable for any damage resulting from the
incorrect construction of the flue gas discharge system.
9 The flue gas discharge pipes for condensing boilers are made of
special materials that are different compared to those made for
standard boilers.
2.4 - Water characteristics of the DHW system
9 If consumption water has a total hardness between 25° F and
50° F, install a DHW treatment kit; with a total hardness great-
er than 50° F, the kit's effectiveness progressively reduces and
therefore the use of an appliance of higher performance or total
softening is recommended; even with a total hardness of less
than 25° F, a filter of appropriate size must be installed if the wa-
ter comes from the mains that is not perfectly clean/cleanable.
2.5 - Boiler installation (fig. 2)
For a correct installation, keep in mind that:
• 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 interven-
tions must be respected.
START CONDENS IS boilers may be installed indoor or outdoor.
Indoor installation (fig. 3)
They may be installed in numerous rooms as long as the combus-
tion product outlet and combustion air suction are brought outside
6-8
less than 200 μS/cm (25 °C)
less than 50 ppm
less than 50 ppm
less than 0.3 ppm
less than 50 ppm
less than 35°F
None
None
less than 20 ppm
the room itself. In this case, the room does not require any ventila-
tion opening because these are boilers with an "airtight" combustion
circuit in relation to the installation environment.
If, instead, the combustion air is picked up from the installation room,
the latter must be equipped with ventilation openings compliant with
Technical Standards and suitably dimensioned.
Consider the clearances necessary to access safety and adjustment
devices and to perform maintenance operations.
Check that the electric protection level of the appliance is adapted to
the installation room characteristics.
In case the boilers are supplied with fuel gas of a specific weight
greater than that of the air, the electric parts will have to be placed at
a level above the ground greater than 500 mm.
Outdoor installation (fig. 4)
The boiler must be installed in a partially protected place or, in other
words, it must not be directly exposed to the action of the weather.
The boiler is fitted as standard with an automatic anti-freeze system
that activates when the temperature of the water in the primary cir-
cuit falls below 6°C.
To take advantage of this protection (based on burner operation),
the boiler must be able to switch itself on; any lockout condition (for
ex. due to a lack of gas or electrical supply, or the intervention of a
safety device) therefore deactivates the protection.
Anti-freeze system
The boiler is fitted as standard with an automatic anti-freeze system
that activates when the temperature of the water in the primary cir-
cuit falls below 6°C.
This system is always active, guaranteeing boiler protection down to
an installation area temperature of -3°C.
9 To take advantage of this protection (based on burner opera-
tion), the boiler must be able to switch itself on; any lockout con-
dition (for ex. due to a lack of gas or electrical supply, or the inter-
vention of a safety device) therefore deactivates the protection.
The anti-freeze protection is also active when the boiler is
on standby.
In normal operation conditions, the boiler can protect itself against
freezing.
Outdoor installation in built-in box (fig. 5)
The boiler can also be installed outside in the special built-in box.
In this type of installation, the boiler can operate in a temperature
range from 0°C to 60°C.
For outdoor installation
If the machine is left unpowered for long periods in areas where
temperatures may fall below 0°C, and you do not want to drain the
heating system, you are advised to add a specific, good quality an-
ti-freeze liquid to the primary circuit.
Carefully follow the manufacturer's instructions with regards not only
the percentage of anti-freeze liquid to be used for the minimum tem-
perature at which you want to keep the machine circuit, but also the
duration and disposal of the liquid itself.
For the domestic hot water part, we recommend you drain the circuit.
The boiler component materials are resistant to ethylene glycol
based antifreeze liquids.
Specific anti-freeze kits are available for outdoor installations.
Pre-assembly template
The boiler is supplied with a preassembly 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.
START CONDENS IS boilers are designed and made to be installed
on heating and domestic hot water production systems.
The position and dimension of hydraulic fittings are shown in the
drawings.
• Position the cardboard template on the wall, 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
• Check the correct horizontality with a spirit level.
Fixing the boiler
Hook the boiler (fig. 6).
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ENGLISH