Immergas EOLO STAR 24 5E, Instruction Manual

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Key:

  1  -  Discharge diaphragm: 

    Ø 38; Ø 40; Ø 42.5

  2  -  Intake diaphragm: Ø 55

• 

Positioning of double lip seals.

For correct 

positioning of lip seals on elbows and exten-

sions, follow the assembly direction shown in 

the figure (Fig. 1-6).

• Coupling extension pipes and concentric 

elbows. To install push-fitting extensions with 

other elements of the flue, proceed as follows: 

Install the concentric pipe or elbow with the 

male side (smooth) on the female side (with lip 

seal) to the end stop on the previously installed 

element in order to ensure sealing efficiency of 

the coupling.

Attention:

 if the exhaust terminal and/or 

concentric extension pipe needs shortening, 

consider that the internal duct must always 

protrude by 5 mm with respect to the external 

duct.

• 

N.B.:

 for safety purposes, do not obstruct the 

boiler intake/exhaust terminal, even tempora-

rily.

• 

N.B.:

 during the installation of the horizontal 

pipes one must maintain a minimum inclina-

tion of the pipes of 3% towards the boiler and 

a section clamp with gusset must be installed 

every 3 metres for non-insulated pipes and one 

every 2 metres for insulated pipes.

Diaphragm installation.

 For proper boiler 

operation a diaphragm must be installed on the 

outlet of the sealed chamber and before the intake 

and exhaust pipe (Fig. 1-7).

The appropriate diaphragm is chosen based on 

type of pipe and its maximum extension: this 

calculation can be made using the tables below:

N.B.:

 the diaphragms are supplied together with 

the boiler.

Attention: only for installations with divided 

terminals 80/80 it is necessary to remove the 

plug located under the sealed chamber, as 

shown in the Fig. 1-8).

Diaphragm

Duct length in metres  

Ø 60/100 horizontal

Ø 38

From 0 to 1

Ø 42.5

Exceeding 1 up to 3

Diaphragm

Duct length in metres  

Ø 60/100 vertical

Ø 38

From 0 to 3.2

Ø 42.5

Exceeding 3.2 up to 4.7

Diaphragm

Duct length in metres  

Ø 80/125 horizontal

Ø 38

From 0 to 3.3

Ø 42.5

Exceeding 3.3 up to 7.4

Diaphragm

Duct length in metres  

Ø 80/125 vertical

Ø 38

From 0 to 8.1

Ø 42.5

Exceeding 8.1 up to 12.2

Diaphragm

(*) Extension in metres  

Ø 80 horizontal pipe 

with two bends

exhaust intake

Ø 40

Ø 55

From 0 to 8

Diaphragm

(*) Extension in metres 

vertical pipe Ø 80

without bends

exhaust intake

Ø 40

Ø 55

From 0 to 12

Diaphragm

(*) Extension in metres  

Ø 80 horizontal pipe 

with two bends

exhaust intake

-

Ø 55

Exceeding 8 up to 14

Ø 40

-

Exceeding 14 up to 35

Diaphragm

(*) Extension in metres 

vertical pipe Ø 80

without bends

exhaust intake

-

Ø 55

Exceeding 12 up to 18

Ø 40

-

Exceeding 18 up to 40

VIEW FROM THE BOTTOM

Diaphragm

(**) Extension in metres  

Ø 80 horizontal pipe 

with two bends

exhaust intake

Ø 40

Ø 55

From 0 to 8

Diaphragm

(**) Extension in metres 

vertical pipe Ø 80

without bends

exhaust intake

Ø 40

Ø 55

From 0 to 12

Diaphragm

intake

(**) Extension in metres  

Ø 80 horizontal pipe with 

two bends

Ø 55

Exceeding 8 up to 27

Diaphragm

intake

(**) Extension in metres 

vertical pipe Ø 80

without bends

Ø 55

Exceeding 12 up to 27

(*) 

These maximum extension values are consid-

ered intake with 1 metre exhaust pipe.

(**) These maximum extension values are con-

sidered exhaust with 1 metre intake pipe.