Ariston 3300761 Istruzioni tecniche - Pagina 10

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INSTALLATION

Water connection (hydraulic)

The figure shows the connections for connecting the boiler to the

water (hydraulic) network and to the gas installation.

Make sure that the maximum water main pressure does not exceed

6 bar, otherwise a pressure reducer must be installed.

Check that the expansion vessel has a capacity appropriate to the

water content of the boiler.

Hydraulic connections

A. Installation Tour

B. Hot water outlet

C. Gas inlet

D. Cold water inlet

E. Installation Return

F. Overpressure device discharge

G. Filling valve

H. Drain valve

I. Condensate drain

For the dimensioning of the pipes and radiators of the heating

installation, the residual level value is evaluated according to the

required flow (capacity), according to the values presented on the

recirculation pump graph.

Graphical representation of the residual flow

recirculation pump

[mCE]

0 100 200 300 400 500 600 700 800 900 1000

Overpressure device

The evacuation of the overpressure device must be connected to a

purge siphon which can be controlled with the naked eye, in order to

avoid - in the event of its intervention - damage to persons, animals

and damage to property for which the manufacturer is not responsible.

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Heating system cleaning

Before installing the boiler, it is recommended to clean the entire

system to remove any residue that may affect the proper operation

of the boiler or boiler.

Boiler installation in new heating systems (or less than 6

months old)

- Clean the heating system with a suitable cleaning solution * to

ensure the correct operation of the boiler in the long run

- Then rinse the pipes and radiators with enough water to remove

the detergent together with magnetite, oxides and any other

deposits (making sure that the system is completely emptied at

all low points and that the water is clean) before connecting the

boiler to the system. central heating.

Boiler installation in existing heating systems

- Remove the old heating agent together with the mud, rust and any

other deposits from the old heating system.

- Rinse the entire heating system.

- Clean the heating system with a suitable cleaning solution * to

ensure the correct operation of the boiler in the long run.

- Rinse the pipes and radiators again with enough water to remove

debris and detergent (making sure that the system is completely

drained at all low points and that the water is clean) before

connecting the boiler to the central heating system.

Water treatment

In general, the boiler and the heating system can only be filled with

cold water from the mains, without any water treatment.

If water treatment is required:

- Clean the entire heating system with a suitable cleaning solution *

and then rinse the pipes and radiators with enough water to

remove the washing agent together with magnetite, oxides and

any other deposits (making sure that the system is completely

emptied at all low points and that the water is clean) before

connecting the boiler to the central heating system.

- Treat the water with a suitable solution * to ensure, on

long term, proper operation of the plant.

- At the end of the treatment, please check if the pH value of the

heating system is between 7 and 8 (very important to avoid the

occurrence of corrosion in aluminum / light alloy components).

You should talk to the

ARISTON THERMO regional technical

service about the recommended chemicals and how to use them ,

as incorrect dosing can cause damage to the boiler and, in particular,

to light aluminum / alloy components.

(*) Please contact the regional technical service ARISTON THERMO

for any information on recommended products for cleaning / water

treatment.

Heated floor installations

In underfloor heating systems, install a safety thermostat on the

underfloor heating circuit. For the electrical connection of the

thermostat, see the paragraph "Electrical connections".

In the event of too high a flow temperature, the boiler will switch off

both domestic hot water and heating.

The boiler restarts when the thermostat with automatic reset is closed.

If it is not possible to install a thermostat, the floor installation will

need to be protected with a thermostatic valve or bypass to prevent

the floor from reaching too high a temperature.