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, TWI 35-130 service manual Parallel connections, Device Diameter Maximum running length, Bend

TWI 35-130, TWI 45-190 specifications

A.O. Smith TWI 35-130 and TWI 45-190 are high-efficiency water heaters designed to meet the diverse needs of residential and commercial applications. These units are part of A.O. Smith’s extensive product line, known for reliability, durability, and energy efficiency.

The TWI 35-130 model is a 35-gallon tank water heater, offering a first-hour delivery of 130 gallons. This capacity makes it suitable for households with moderate hot water demands. It features a compact design, allowing for easy installation in tighter spaces, which is ideal for urban settings. The unit operates on natural gas, promoting energy efficiency while reducing operational costs.

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On the other hand, the TWI 45-190 model caters to larger households or commercial settings with a 45-gallon capacity and a first-hour delivery of 190 gallons. This model also uses natural gas, but with a higher BTU rating, allowing for faster recovery rates, which is crucial during peak usage times.

Both models are designed with user-friendliness in mind, featuring intuitive controls that facilitate easy temperature adjustments and monitoring. Additionally, they incorporate safety features such as a temperature and pressure relief valve to prevent overheating and excessive pressure build-up, ensuring peace of mind for users.

Their innovative design also emphasizes longevity, with high-grade materials and protective coatings that resist corrosion and extend the lifespan of the tank. The TWI series stands out in the market not only for its performance and efficiency but also for its commitment to sustainability.

In summary, A.O. Smith's TWI 35-130 and TWI 45-190 water heaters bring together cutting-edge technology, efficiency, and reliability, making them excellent choices for both residential and commercial applications. With features designed to promote energy savings and user convenience, these models are poised to meet the hot water demands of modern life while adhering to high standards of safety and durability.