Bedienungsanleitung Unical MODULEX EXT 250 (Seite 49 von 56) (Englisch)

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Instructions for the installer

3.29 INITIAL LIGHTING

PRELIMIARY CHECKS

The ﬁrst ignition must be carried out by a

qualiﬁed technician. Failure to do so could

cause injury to persons, animals or damage

to property. UNICAL shall not be held liable

for any injury and/or damage.

Before lighting the boiler check that:

- the boiler installation has been carried out in accordance with

the speciﬁc Standards.

- the combustion air inlet and the discharge of the products

of combustion occur in the correct way in accordance to the

speciﬁc Standards in force;

- the gas supply system is correctly dimensioned for the boiler’s

output;

- the boiler’s electrical supply is 230 V - 50 Hz;

- the system has been ﬁlled with water (pressure registered

on the gauge 0,8/1 bar with pump not running);

- any of the system’s on-off valves are open;

- the mains supply gas corresponds to the one which the boiler

has been calibrated for: otherwise convert the boiler to use

the available gas (refer to section: “GAS CONVERSION”);

this operation must be carried out by a qualiﬁed technician

in compliance to the regulations in force;

- the gas supply cock is open;

- there are no gas leaks;

- the external mains supply switch is on;

- the boiler system’s safety valve is not blocked and that it is

connected to the sewage system;

- the condensate drain siphon has been ﬁlled with water and

that it is connected to the sewage system;

DANGER!

Before ﬁring the appliance ﬁll up the siphon

through the ﬁlling hole and check the correct

drainage of the condensate.

If the appliance is used with the condensate

drain siphon empty this could cause poiso-

ning caused by the leakage of the ﬂue gasses.

- there are no water leaks;

- all the necessary ventilation conditions and minimum clea-

rance distances are guaranteed for subsequent servicing in

case the boiler is sited in a cupboard compartment.

Information to be passed on to the user

The user of the appliance must be instructed on the use and

operation of his boiler and in particular detail:

- Hand over to the end user the booklet: “USER’S IN-

STRUCTIONS GUIDE”, as well as all the other literature

relative to the appliance and placed in the envelope contained

in the packaging. The user of the appliance must retain

this literature for any future reference.

- Inform The user of the importance of the air vents and of

the ﬂue outlet system, stressing the fact that absolutely no

alteration can be made.

- Inform the user regarding the control of the system’s water

pressure and how to restore it to the correct value.

- Explain and demonstrate to The user the correct function and

adjustment of the temperature, thermostats and radiators for

the economic use of the system.

- Remind the user that in order to comply to the regulations in

force the boiler has to be inspected and serviced regularly

as indicated by the manufacturer.

- If the appliance is sold or transferred to another owner or

if the present user moves home and leaves the appliance

installed, ensure yourself that the manual always follows the

appliance so that it can be consulted by the new owner and/

or installer.

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