Immergas EOLO STAR 24 5E, Instruction Manual

7

1-3

CAVO ALIMENTAZIONE

GÜÇ KABLOSU

INS

TALLER

US

ER

MAINTEN

AN

CE TECHNI

CI

AN

1.4  BOILER CONNECTION UNIT.

The connection unit consisting of all the necessa-

ry parts to perform the hydraulic and gas system 

connections of the appliance comes as optional.

1.5  GAS CONNECTION.

Our boilers are designed to operate with methane 

gas (G20) or LPG. Supply pipes must be the same 

as or larger than the 3/4”G boiler fitting. Before 

connecting the gas line, carefully clean inside all 

the fuel feed system pipes to remove any residue 

that could impair boiler efficiency. Also make 

sure the gas corresponds to that for which the 

boiler is prepared (see boiler data nameplate). If 

different, the boiler must be converted for ope-

ration with the other type of gas (see converting 

appliance for other gas types). The dynamic gas 

supply (methane or LPG) pressure must also be 

checked according to the type used in the boiler, 

which must be in compliance, as insufficient 

levels can reduce generator output and cause 

malfunctions.

Ensure correct gas cock connection. The gas 

supply pipe must be suitably dimensioned 

according to current regulations in order to 

guarantee correct gas flow rate to the burner even 

in conditions of maximum generator output and 

to guarantee appliance efficiency (technical spe-

cifications). The coupling system must conform 

to standards in force.

Fuel gas quality.

 The appliance was designed to 

operate with combustible gas free of impurities; 

otherwise it is advisable to fit special filters 

upstream of the appliance to restore the purity 

of the fuel.

Storage tanks (in case of supply from LPG 

depot).

- New LPG storage tanks may contain residual 

inert gases (nitrogen) that degrade the mixture 

delivered to the appliance casing functioning 

anomalies.

- Due to the composition of the LPG mixture, 

layering of the mixture components may occur 

during the period of storage in the tanks. This 

can cause a variation in the heating power of 

the mixture delivered to the appliance, with 

subsequent change in its performance.

1.6  HYDRAULIC CONNECTION.

Attention:

 in order not to void the heat primary 

exchanger warranty, before making the boiler 

connections, carefully clean the heating system 

(pipes, radiators, etc.) with special pickling or 

de-scaling products to remove any deposits that 

could compromise correct boiler operation.

A treatment of the heating and water system wa-

ter is required, in compliance with the technical 

standards in force, in order to protect the system 

and the appliance from deposits (e.g. scale), 

slurry or other hazardous deposits.

Water connections must be made in a rational 

way using the couplings on the boiler template. 

The boiler safety valve outlet must be connected 

to a draining funnel. Otherwise, the manufactu-

rer declines any responsibility in case of flooding 

if the drain valve cuts in.

Attention:

 the manufacturer declines all liability 

in the event of damage caused by the installation 

of an automatic filling system.

Attention:

 to preserve the duration of appliance 

efficiency features, in the presence of water whose 

features can lead to the deposit of lime scale, 

installation of the “polyphosphate dispenser” kit 

is recommended.

1.7  ELECTRICAL CONNECTION.

The "Eolo Star 24 5 E" boiler has an IPX5D pro-

tection rating for the entire appliance. Electrical 

safety of the appliance is reached only when it 

is correctly connected to an efficient earthing 

system as specified by current safety standards.

Attention:

 the manufacturer declines any 

responsibility for damage or physical injury 

caused by failure to connect the boiler to an 

efficient earth system or failure to comply with 

the reference standards.
Also ensure that the electrical installation cor-

responds to maximum absorbed power specifi-

cations as shown on the boiler data nameplate.

Boilers are supplied complete with a “Y” type 

power cable. The power supply cable must be 

connected to a 230V ±10% / 50Hz mains supply 

respecting L-N polarity and earth connection; 

 this network must also have a multi-pole 

circuit breaker with class III overvoltage category. 

When replacing the power supply cable, contact 

a qualified firm (e.g. the Authorised After-Sales 

Technical Assistance Service).

The power cable must be laid as shown (Fig. 1-3).

In the event of mains fuse replacement on the 

P.C.B., use a 3.15A quick-blow fuse. For the 

main power supply to the appliance, never use 

adapters, multiple sockets or extension leads.

SUPPLY VOLTAGE CABLE