A.O. Smith TWI 45-190 Specification of concentric roof flue terminal C33, Parallel connections

Models: TWI 35-130 TWI 45-190

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Specification of concentric roof flue terminal C33

3 Installation

Specification of concentric roof flue terminal C33

Subject

 

Description

Roof flue terminal set:- 1x Roof flue

Item no.:

TWI 35-130: 0305 042 (1)

terminal (incl. clamping strip)

 

TWI 45-190: 0305 042 (1)

- 1x Pipe 1000 mm

 

 

Construction:

Concentrique

- 1x Mounting flange

Manufacturer:

Muelink & Grol

 

 

Type :

M2000 DDV HR-C

Piping material

Construction :

Concentrique

 

Flue gas discharge:

Thick-walled aluminium with lip-ring sealing

 

Air supply:

Thin-wall galvanised sheet steel

Pipe diameters

Flue gas discharge:

TWI 35-130: Ø 80 mm

 

 

TWI 45-190: Ø 80 mm

 

Air supply:

TWI 35-130: Ø 125 mm

 

 

TWI 45-190:Ø 125 mm

(1) It is not allowed to use any other roof flue terminal. You can order the roof flue terminal mentioning the item number with A.O. Smith, manufacturer or wholesaler’s.

3.9.4Parallel connections

The table gives the maximum pipe length for parallel systems. The maximum pipe length depends on the selected diameter.

Warning

Mount flue gas discharge material with a fall of 5 mm per metre towards the device.

Requirements for flue gas discharge for parallel systems

Device

Diameter (1)

Maximum running length

L

L

equivalent

 

 

 

equivalent

 

 

 

 

90° bend

45° bend

TWI 35-130

80

30

3,9

1,1

TWI 45-190

80

20

3,9

1,1

TWI 35-130

100

100

4,6

1,2

TWI 45-190

100

75

4,6

1,2

(1) The given larger diameter can be used if the maximum running length is insufficient. When using a larger diameter, this shall be used for both the air supply and the flue gas discharge.

Use the longest pipe for calculating the pipe length. If, for example, the flue gas discharge pipe is 10 metres and the air supply pipe is 15 metres, use the 15 metres for calculating the length. Then add the Lequivalent to these 15 metres for each 90° and 45° bend in both the air supply and the flue gas discharge. All this will be explained using a practical example.

Practical example of parallel flue gas discharge

Example

The figure shows a TWI 35-130. The device is to be provided with a 25 m parallel pipe with a diameter of 100 mm and eight 90° bends. An inspection shall be carried out for compliance of the configuration with the requirements stated in the table.

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Instruction manual TWI 35-130 G/TWI 45-190 G

Page 28
Image 28
A.O. Smith TWI 45-190 Specification of concentric roof flue terminal C33, Parallel connections, Maximum running length, bend