Gas Connections - Riello START 28 KI Manuel D'installation Et D'utilisation

FIXING THE BOILER
The START 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.
- 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 referring to the indication "plug the hole".
- Remove the plate and drill the holes
- Fit the plugs.
- Use a spirit level to check the plate is level.
- Hook up the boiler to the plugs (fig. 4).
3.7 Hydraulic connections (fig. 5)
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.
M heating delivery
AC hot water outlet
G gas
R heating return
AF cold water inlet
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.
If the supply water has a total hardness of between 25°F and
50°F, install the domestic water kit. If the total hardness is above
50°F, the kit progressively decreases in efficiency and a higher
performing appliance or a water softening system should be
installed. In case of total hardness below 25°F, a suitably sized
filter should be installed if the water supplied form the mains is
not perfectly clean/cannot be cleaned.
The boiler safety valve outlet must be connected to an adequate
collection and drainage system. The boiler manufacturer declines
all liability for any flooding caused by the safety valve.
A carry case kit is available so that connections can be made
quickly, without wasting time on each system.
3.8 Electrical connections (fig. 6 - 7 - 8)
The START boiler is factory-wired and the electrical power cable
is already connected. The room thermostat/s (TA) must simply be
connected to the relative terminals.
- Turn the main system switch to "OFF".
- Unscrew the case fixing screws (A).
- Move the bottom of the case forward and then upwards to detach
it from the frame.
- Unscrew the panel screws (B).
- Turn the control panel forwards.
- Open the cover (C) to access the control board.
The boiler operates with alternating current at 230 V/50 Hz and is
compliant with standard EN 60335-1.
Low-voltage safety room thermostat (voltage-free contact).
When using a phase-phase power supply, use a tester to
determine which of the two wires has the greater potential
compared to the earth and connect it to the L terminal. Connect
the remaining wire to the N terminal.
The boiler can also operate with a phase-neutral or phase-phase
power supply. For floating power supplies, i.e. those which
have no earth connection, use an insulation transformer with a
secondary circuit connected to the earth.
The earth wire must be approximately 2 cm longer than the other
wires.
YOU MUST:
- use a general trip-switch to disconnect the line in compliance with
Italian CEI-EN 60335-1 standards (contact opening at least 3.5
mm, category III)
- use cables with a cross-section of ≥ 1.5 mm
(phase) - N (neutral) connection
- ensure that the amperage on the switch is adequate for the boiler's
electrical power rating. Please refer to the technical data to check
the electrical rating of the model installed
- connect the appliance to an efficient earthing system
- ensure that the power socket can be accessed after installation.
3.9
The START boilers must be connected to the main gas supply in
compliance with current installation standards.
Before connecting the appliance, ensure that:
- the type of gas is compatible with the boiler model being installed.
- all pipelines are thoroughly cleaned.
3.10
START KI (fig. 9)
The discharge pipeline and connection to the flue must comply with
current local and national standards and legislation.
Use rigid ducts. Joints between parts must be airtight. All components
must be resistant to high temperatures, condensate and mechanical
stress.
START KIS (fig. 10a-b-c-d-e-f-g-h)
The boilers must have appropriate ducts for fumes outlet and air intake,
according to the type of installation. Ducts are an integrant part of
the boiler but are supplied in separate kits, for improved installation
flexibility.
"FORCED OPEN" INSTALLATION (TYPE B22P-B52P)
Fumes outlet duct ø 80 mm (fig. 10c)
The fumes outlet duct can be aimed in the most suitable direction for
installation needs. To install follow the instructions supplied with the kit.
and respect the L
2
In this configuration, the boiler is connected to the Ø 80 mm fumes
outlet duct by means of a Ø 60-80 mm adaptor.
Do not use gas or water pipes to earth this appliance.
The manufacturer declines any liability for damage caused by
failure to comply with the wiring diagrams.
The installer is responsible for ensuring that the appliance has an
efficient earthing system. The manufacturer declines all liability
for any damage caused by a faulty earthing circuit or the lack
of an efficient earthing circuit.

Gas connections

The gas supply system must be suited to the flow rate of the
boiler and must be fitted with all safety and control devices as
envisaged by current standards. A suitable sized filter should
also be used.
At the end of installation, check all connections are properly
sealed.
Flue gas outlet and combustion air suction
These boilers are equipped with a fumes thermostat positioned
on the right side of the hood. If combustion products are returned,
this device immediately shuts down operation of the boiler.
The combustion air vents must comply with current technical
standards.
Discharge ducts without insulation are a potential source of
danger.
Do not seal off or reduce the size of the air vents in the room
where the boiler is installed.
START KI
22
The maximum lengths of the ducts refer to flue systems available
in the catalogue.
ENGLISH
22
5