Immergas VICTRIX ZEUS SUPERIOR, Instruction Booklet

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1.19 FLUES, CHIMNEYS, CHIMNEY POTS 

AND TERMINALS.

The flues, chimneys and chimney pots for the 

evacuation of combustion products must be in 

compliance with applicable standards. Chimneys 

and roof-installed exhaust terminals must com-

ply with the outlet height and with the distance 

from technical volumes set forth by the technical 

standards in force.

Positioning the wall flue exhaust terminals.

 The 

wall flue exhaust terminals must:

- be installed on external perimeter walls of the 

building;

- be positioned according to the minimum dis-

tances specified in current technical standards.

Combustion products exhaust of natural draught 

or fan assisted appliances in open-top closed 

environments. In spaces closed on all sides with 

open tops (ventilation pits, courtyards etc.), 

direct flue gas exhaust is allowed for natural or 

forced draught gas appliances with a heating 

power range from 4 to 35 kW, provided the 

conditions as per the current technical standards 

are respected.

1.20 SYSTEM FILLING.

Once the boiler is connected, proceed with 

system filling via the filling cock (Fig. 1-29 and 

2-8). Filling is performed at low speed to ensure 

release of air bubbles in the water via the boiler 

and heating system vents.

The boiler has a built-in automatic venting valve 

on the circulator. 

Check if the cap is loose.

 Open 

the radiator vent valves.

Close radiator vent valves when only water 

escapes from them.

Close the filling cock when the boiler pressure 

gauge indicates approx. 1.2 bar. 

N.B.:

 during these operations, turn on the circu-

lating pump at intervals using the main switch on 

the control panel. 

Vent the circulation pump by 

loosening the front cap and keeping the motor run-

ning.

 Screw the cap back on after the operation.

1.21 CONDENSATE TRAP FILLING.

On first lighting of the boiler, flue gas may come 

out the condensate drain; after a few minutes’ 

operation check that this no longer occurs. This 

means that the drain trap is filled with conden-

sate to the correct level preventing the passage 

of flue gas.

1.22 GAS SYSTEM START-UP.

To start up the system, refer to the technical 

standard in force: This divides the systems and 

therefore the start-up operations into three 

categories: new systems, modified systems, re-

activated systems. 

In particular, for new gas systems:

- open windows and doors;
- avoid presence of sparks or open flames;
- bleed all air from the pipelines;
-  check that the internal system is properly sealed 

according to the specifications set forth by 

technical regulations in force.

1.23 BOILER START UP (IGNITION).

In order to issue the Declaration of Conformity 

required by the laws in force, one must fulfil 

the following requirements to commission the 

boiler (the operations listed below must only 

be performed by qualified personnel and in the 

presence of professionals only):

-  check that the internal system is properly sealed 

according to the specifications set forth by 

technical regulations in force;

-  make sure that the type of gas used corresponds 

to boiler settings;

- Check that there are external factors that may 

cause the formation of fuel pockets; 

-  switch the boiler on and check correct ignition;
- make sure that the gas flow rate and relevant 

pressure values comply with those given in the 

manual (Par. 3.18);

- ensure that the safety device intervenes in the 

event of gas supply failure and check the relative 

intervention time;

- check the intervention of the main switch 

located upstream from the boiler and in the 

boiler;

- check that the intake/exhaust concentric ter-

minal (if fitted) is not blocked.

The boiler must not be started up even if only 

one of the checks should be negative.

N.B.:

 only upon completing commissioning by 

an installer, may an authorised firm carry out an 

initial inspection of the boiler, which is required to 

activate the Immergas warranty. The test certificate 

and warranty is issued to the user.