Immergas VICTRIX PRO 35 2ErP, User Manual

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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 the seal of the internal system by follow-

ing the instructions provided by the technical 

regulations in force (refer to the pertaining lo-

cal regulations for the "sealing test" on systems 

served by single or cascade generators with a 

nominal thermal capacity greater than 35 kW.

1.23 BOILER START UP (IGNITION).

In order to issue the Declaration of Conformity 

required by the regulations 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 staff only):

-  check that the internal system is properly sealed 

according to the specifications set forth by 

regulations in force; Up to operating pressures 

of 40 mbar it is also possible to use the testing 

method adopted by the technical regulations 

in force for systems served by single appliances 

(or in cascade set-up), with nominal thermal 

capacities greater than 35 kW. For greater pres-

sure levels you will need to refer to legislation 

in force and/or other effectively tried and tested 

methods;

-  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 the fan rpm matches the value pro-

vided in the book (Par. 3.24);

- ensure that the safety device intervenes in the 

event of gas supply failure and check the relative 
intervention time;

- check activation 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.

1.18 FLUE DUCT SYSTEMS FOR VOIDS 

AND CHIMNEYS.

Flue ducts may be installed in suitable voids or 

chimneys provided that the relevant building 

regulations permit this.  Flue ducting systems 

must be installed in strict accordance with the 

manufacturers instructions.

Immergas ducting system Ø 80 .

 The "Green 

Series" 80 Ø flexible ducting system must only be 

used with Immergas condensing boilers.

In any case, ducting operations must respect 

the provisions contained in the standard and in 

current technical regulations; in particular, the 

declaration of conformity must be compiled at 

the end of work and on commissioning of the 

ducted system. The instructions in the project 

or technical report must likewise be followed, in 

cases provided for by the standard and current 

technical regulations. The system or components 

of the system have a technical life complying with 

current standards, provided that:

- it is used in average atmospheric and envi-

ronmental conditions, according to current 

regulations (in particular, by the standards 

regarding: absence of combustion products, 

dusts or gases that can alter the normal ther-

mophysical or chemical conditions; existence 

of temperatures coming within the standard 

range of daily variation, etc.).

- Installation and maintenance must be per-

formed according to the indications supplied 

by the manufacturer and in compliance with 

the provisions in force.

- The max. possible length of the 80 Ø flexible 

ducting vertical section 

is equal to 11.0 m for 

Victrix Pro 35 2ErP and 15.0 m for Victrix Pro 

55 2ErP

. This length is obtained considering 

the complete exhaust terminal, 1m of 80 Ø 

pipe in exhaust, two 90° 80 Ø bends at the 

boiler outlet to connect to the ducting system 

and two direction changes of the flexible tube 

inside the flue/technical slot.

1.19 

FLUE EXHAUST WITH BOILERS IN 

CASCADE.

The boilers installed in cascade composed of 

any number between 2 and 5 boilers, can be 

manifolded to a unique flue exhaust pipe, which 

flows into a flue.

Immergas supplied an appropriate and original 

flue exhaust system separately to the boilers.

1.20 SYSTEM FILLING.

When the boiler has been connected, fill the sys-

tem. Filling is performed at low speed to ensure 

release of air bubbles in the water via the boiler 

and heating system vents.

The boiler incorporates two automatic vent 

valves fitted on the circulator pump and on the 

condensing module. Check if the cap is loose. 

Open the radiator vent valves. Close radiator 

vent valves when only water escapes from them. 

N.B.:

 during these operations start up the cir-

culation pump at intervals, acting on the main 

switch positioned on the control panel.

Attention:

 this boiler is 

not

 equipped with an 

expansion vessel on the system. It is mandatory 

to install a closed expansion vessel to guarantee 

correct boiler operation. The expansion vessel 

must comply with the European Standards in 

force. The dimensions of the expansion vessel 

depend on the data relative to the central heating 

system. Install a vessel whose capacity responds 

to the requisites of the Standards in force (''R'' 

collection).

1.21 CONDENSATE TRAP FILLING.

On first lighting of the boiler combustion prod-

ucts may come out the condensate drain; after a 

few minutes’ operation check that this no longer 

occurs. This means that the trap is filled with 

condensate to the correct level preventing the 

passage of combustion products.

B23

1-23

Exhaust

Exhaust