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9. General information
10. Instructions prior to
installation
Instructions pertaining to the installer
The following remarks and instructions are addressed to Service Engineers to help them carry out a
faultless installation. Instructions regarding lighting and operation of the boiler are contained in the
'Instructions pertaining to the user' section.
Note that installation, maintenance and operation of the domestic gas appliances must be performed
exclusively by qualified personnel in compliance with current standards.
Please note the following:
* This boiler can be connected to any type of double- or single feeding pipe convector plates, radiators,
thermoconvectors. Design the system sections as usual though taking into account the available
output / pump head performances, as shown on page 29.
* Do not leave any packaging components (plastic bags, polystyrene, etc.) within children's reach
as they are a potential source of danger.
* Initial lighting of the boiler must be effected by a Qualified Service Engineer.
Failure to observe the above will render the guarantee null and void.
This boiler is designed to heat water at a lower than boiling temperature at atmospheric pressure. The
boiler must be connected to a central heating system and, on models withis option, to a domestic hot
water supply system in compliance with its performances and output power.
Before connecting the boiler have the following operations effected:
a) careful checking that the boiler is fit for operation with the type of gas available. For more details
see the notice on the packaging and the label on the appliance itself.
b) careful checking that the flue terminal draft is appropriate; that the terminal is not obstructed and
that no other appliance exhaust gases are expelled through the same flue duct, unless the flue is
especially designed to collect the exhaust gase coming from more than one appliance, in conformity
with the laws and regulations in force.
c) careful checking that, in case the flue has been connected to pre-existing flue ducts, thorough
cleaning has been carried out in that residual combustion products may come off during operation
of the boiler and obstruct the flue duct.
To ensure correct operation of the appliance and avoid invalidating the guarantee, observe the following
precautions
1. Hot water circuit:
if the water hardness is greater than 20 °F (1 °F = 10 mg calcium carbonate per litre of water) install
a polyphosphate or comparable treatment system responding to current regulations.
2. Heating circuit
2.1.
new system
Before proceeding with installation of the boiler, the system must be cleaned and flushed out
thoroughly to eliminate residual thread-cutting swarf, solder and solvents if any, using suitable
proprietary products.
2.2.
existing system:
Before proceeding with installation of the boiler, the system must be cleaned and flushed out
to remove sludge and contaminants, using suitable proprietary products.
To avoid damaging metal, plastic and rubber parts, use only neutral cleaners, i.e. non-acid and non-
alkaline (e.g. SENTINEL X400 and X100), proceeding strictly in accordance with the maker's
12
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