Immergas EOLO STAR 24 4E Instructions And Warnings page 16

• Diaphragm installation
For proper boiler operation a diaphragm must be installed on
the outlet of the sealed chamber and before the intake and ex-
haust pipe (Fig. 10).
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.
Diaphragm
Ø 38
Ø 42.5
Diaphragm
Ø 38
Ø 42.5
Diaphragm
Ø 38
Ø 42.5
Diaphragm
Ø 38
Ø 42.5
Diaphragm
Exhaust Intake
Ø 40 Ø 55
Exhaust Diaphragm
Ø 40
Diaphragm
Exhaust Intake
16
Duct length in metres
Ø 60/100 horizontal
From 0 to 1
Exceeding 1 up to 3
Duct length in metres
Ø 60/100 vertical
From 0 to 3
Exceeding 3 up to 4.5
Duct length in metres
Ø 80/125 horizontal
From 0 to 3
Exceeding 3 up to 7.5
Duct length in metres
Ø 80/125 vertical
From 0 to 8
Exceeding 8 up to 12
(*) Extension in metres
Ø 80 horizontal pipe with two
bends
From 0 to 8
(*) Extension in metres
Ø 80 horizontal pipe with two
bends
Exceeding 8 up to 35
(*) Extension in metres vertical
pipe Ø 80 without bends
1
Diaphragm
Ø 40 Ø 55
Exhaust Diaphragm
Exhaust Intake
Ø 40
Diaphragm
Exhaust Intake
Ø 40 Ø 55
Intake Diaphragm
Ø 55
Diaphragm
Exhaust Intake
Ø 40 Ø 55
Intake Diaphragm
Ø 55
(*) These maximum extension values are considered intake with 1
metre exhaust pipe.
(**) These maximum extension values are considered exhaust with
1 metre intake pipe.
2
Key:
(*) Extension in metres vertical
pipe Ø 80 without bends
From 0 to 12
(*) Extension in metres vertical
pipe Ø 80 without bends
From 12 to 40
(**) Extension in metres
Ø 80 horizontal pipe with two
bends
From 0 to 8
(**) Extension in metres
Ø 80 horizontal pipe with two
bends
Exceeding 8 up to 27
(**) Extension in metres
Ø 80 vertical pipe without bends
From 0 to 12
(**) Extension in metres
vertical pipe Ø 80 without bends
Exceeding 12 up to 33
1 - Discharge diaphragm:
Ø 38; Ø 40; Ø 42,5
2 - Intake diaphragm: Ø 55