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

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ENGLISH
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3.5 Installation on appliances that are old or that need to
be updated
When the
Start Aqua Condens 25/60 BIS
boiler is installed in old
systems or systems being updated, verify 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 con-
densate 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 6-8
Electric conductivity less than 200
μ
S/cm (25 °C)
Chlorine ions less than 50 ppm
Sulphuric acid ions less than 50 ppm
Total iron less than 0.3 ppm
M alkalinity less than 50 ppm
Total hardness less than 35°F
Sulphur ions None
Ammonia ions None
Silicon ions less than 20 ppm
The manufacturer is not liable for any damage resulting from
the incorrect construction of the flue gas discharge system.
The flue gas discharge pipes for condensing boilers are made
of special materials that are different compared to those made
for standard boilers.
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 ap-
pliance
- 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.
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 (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.
The selection and the installation of the system components
are the responsibility of the installer, who must operate accord-
ing to the rules of good technique and current Legislation.
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.
A carrying case kit is available that allows to make connections
quickly and without unnecessary waste on each system.
M
Heating delivery
R
Heating return line
G
Gas
SC
Discharge manifold
AF
Cold water inlet
AC
Hot water outlet
3.8 Discharge manifold
The discharge manifold collects: condensate water, any evacuation
water from the safety valve and the system discharge water (fig. 10).
The manifold must be connected via a rubber pipe (not provid-
ed) to an appropriate collection and evacuation system in the
white water discharge drain in compliance with current regula-
tions. The outer diameter of the manifold is 20 mm: it is there-
fore advisable to use a rubber pipe ø18-19 mm closed with a
suitable clamp (not provided).
Regularly check that the discharge manifold is not blocked by
solid residues that might prevent the outflow of condensate wa-
ter.
The manufacturer is not liable for any damage resulting from
the failure to channel the condensate.
Sealing of the condensate drainage connection line must be
guaranteed.
The boiler manufacturer is not responsible for any floods
caused by the intervention of the safety valves.
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.