ST008 Probe for Immergas Baxi CR Termotecnica User Manual

ST008 Probe for Immergas Baxi CR Termotecnica

Generalities

Ducting is an operation through which, within the context of restructuring a system and with the introduction of one or more special ducts, a new system is executed for evacuating the combustion products of a gas appliance, starting from an existing flue (or a chimney) or a technical slot. The 80 Ø flexible ducting system must only be used for domestic use and with Immergas condensation boilers, according to the configurations mentioned in the boiler’s instruction booklets (e.g.: C53; C93). 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 the commissioning of the ducted system. The instructions in the project or technical report must likewise be followed, in cases provided for by the current regulations. To guarantee system reliability and duration, you must:

• It is used in average atmospheric and environmental conditions, according to current regulations (absence of combustion products, dust, or gases that can alter the normal thermophysical or chemical conditions; the existence of temperatures coming within the standard range of daily variation, etc.).
• Installation and maintenance must be performed according to the indications supplied by the manufacturer and in compliance with the provisions in force.

Composition.

The Ø 80 Immergas flexible ducting system consists of a series of modules and components, identified as individual kits, which, assembled according to specific installation needs, make up the complete system and enable it to be combined with the various know plant solutions:

• 3.027873 – Support bend kit Ø 80 87° and flexible ducting adapter Ø 80
• 3.027874 – Support bend kit Ø 80 70° M and flexible ducting adapter Ø 80
• 3.027875 – Flexible duct kit Ø 80 12m with spacers
• 3.027876 – Vertical outlet kit Ø 80/125 for flexible ducting Ø 80
• 3.027877 – Flexible/flexible adapter kit for flexible ducting Ø 80
• 3.022033 – Ø 125 ducting kit for C9
• 3.012008 – Chimney hole closure panel kit

Installation

• Preparation of masonry, eliminating the brickwork chimney cap at the top of the chimney.

Flexible hose kit Ø 80 mm, L = 12 m (Fig. 1).

Flexible/flexible adapter kit for flexible flue extraction elements Ø 80 (Fig. 1).
In case you wish to recover a flexible hose left over from another installation, it can be joined to other pieces via the flexible/flexible adapter (6), paying attention to assemble it as described below:

• In order, insert the ring nut (3), the collar (4), and then the gasket (5) on the flexible hose (1), as shown in Fig. 1.
• Tighten the ring nut (3) with flexible hose (1) onto the adapter (6) to the end stop.

**Vertical outlet kit Ø 80/125 for flexible flue extraction elements Ø 80 (C5

• C9) (Fig. 2).**

  • Secure the valley gutter unit (7) to the chimney using the most suitable method, according to the technical standard and conditions of the chimney itself, making the flexible hose (4) come out from the top.
  • In order, insert the ring nut (1), the collar (2), and then the gasket (3) on the flexible hose (4), as shown in Fig. 2.
  • Tighten the ring nut (1) with flexible hose (4) onto the adapter (5) to the end stop.
  • After ensuring the gasket (6) is there, couple the flexible/rigid adapter (5) onto the exhaust grid outlet (8), which in turn is to be coupled onto the valley gutter unit (7).

The following support bracket kits can be installed, depending on your needs:

• Support bracket bend kit Ø 80 mm 87° and flexible adapter Ø 80 (Fig. 3)
• Support bracket bend kit Ø 80 mm 70° M and flexible adapter Ø 80 (Fig. 4) are shown on the next page.

Support bracket bend kit Ø 80 mm 87° for flexible flue extraction elements Ø 80 (Fig. 3).

• Create an opening of about 160 x 330 mm, as indicated in figure 3, checking the height of the boiler flue channel from the ground in order to determine the center of the bent support (2). Respect the height of 70 mm to start the opening in order to ensure the metal bracket (1) is properly supported.
• Install the metal bracket (1) making a Ø 10 mm hole at a distance of 70 mm from the center of the bend; insert it and cut off the excess part indicated by the arrow, as illustrated in figure 3.
• Fix the bent support (2) Ø 80 mm M/F at 87°, centering it with respect to the flue (insert the lower pin (3) of the bend in the most suitable hole of the previously installed support metal bracket (1)).
• Insert the Ø 80 adapter (4) into the support bend (2) to the end stop (approximately 50 mm), making sure the gasket (5) is there.
• In order, insert the ring nut (6), the collar (7), and then the gasket (8) on the flexible hose (9), as shown in Fig. 3.
• Tighten the ring nut (6) with flexible hose (9) onto the adapter (4) to the end stop.

Support bracket bend kit Ø 80 mm 70° M for flexible flue extraction elements Ø 80 (Fig. 4).

• Create an opening of about 140 x 220 mm, as shown in figure 4/A. Respect the maximum wall thickness of 100 mm and the minimum chimney dimension of 140 mm.
• Open the 4 clamping fins (1) on the support bracket bend (2) and position it at the opening of the chimney, as shown in fig. 4/B.
• Drill the chimney with a Ø 5 drill bit and secure the bracket (2) with the 4 wall plugs (3) provided.
• Pull about 200 mm of flexible hose (4) out of the chimney opening (fig. 4/A).
• In order, insert the ring nut (5), the collar (6), and then the gasket (7) on the flexible hose (4), as shown in fig. 4/C.
• Tighten the ring nut (5) with flexible hose (4) onto the 70°bend (8) to the end stop (fig. 4/C).
• Insert the bend (8) with flexible hose (4) into the bracket (2), as shown in fig. 4/D.
• Block the bend (8) onto the bracket (2) at the required distance by inserting the pin (9) into one of the holes (10) on the bracket (2), as shown in fig. 4/D.

Chimney hole closure panel kit (Fig. 5).

• Mount the chimney hole closure panel (1) as indicated in fig. 5, positioning the gasket (2) to cover the hole made for assembly of the bent support (3). Assemble the boiler flue channel by inserting the wall sealing plate (4) and positioning the relative drilled door (5) and gasket (6).
  Note: If necessary, you can cut the end of the support bend (3) as shown in fig. 5.

Installation regulations

The Ø 80 flexible ducting system must be coupled etc elusively to Immergas sealed chamber, fan assisted boilers operating with condensation system.

The installation of the support metal bracket (1 Fig. 3) or (2 Fig. 4) on the wall must ensure a stable and effective mount to the system itself (therefore, compliance with the measurements indicated in the installation chapter is recommended, to give it firm masonry support).

Resistance factors and equivalent lengths. Each flue component has a resistance factor based on experimental tests and specified in the following table. The resistance factor for individual components is independent of the type of boiler on which it is installed and has a dimensionless size. It is, however, conditioned by the temperature and the mass of the fluids that pass through the pipe and therefore, varies according to applications for air intake or flue exhaust. Every single component has a resistance corresponding to a certain length in meters of pipe of the same diameter; the so-called equivalent length is obtained from the ratio between the relative resistance factors. Example: support bend Ø 80 mm M/F at 87° – resistance factor in exhaust 2.55; flexible hose Ø 80 mm (m 1) – resistance factor in exhaust 4.47; equivalent length of the bent support Ø 80 mm M/F at 87°= 2.55: 4.47 = 0.57 m of flexible hose Ø 80 mm in the exhaust. All boilers have an experimentally obtainable maximum resistance factor equal to 100. The maximum resistance factor allowed corresponds to the resistance encountered with the maximum allowed pipe length for each type of Terminal Kit. This information allows calculations to be made to verify the possibility of setting up various flue configurations.

Maintenance

• Routine maintenance. To be carried out according to the instructions in the boiler’s booklet.
• Extraordinary maintenance. This type of maintenance requires a check of the ducting system for leaks in the following cases: (See the following paragraph):
  • accidental events which may have changed or jeopardized the correct operation of system fluid dynamics;
  • building interventions that may adversely affect or change the correct operation of system fluid dynamics;
  • according to the laws in force, replacement of equipment with other similar Immergas condensation equipment;
  • whenever the system is non-functional and not adaptable under the regulations in force.

Check the ducting system sealing.
The duct sealing system check must be carried out after installation, in accordance with what is specified in the National Standard.

Should extraordinary maintenance be requested, the sealing system must be checked according to National Standard. The results of the checks must be reported in the documentation provided by the laws in force (e.g. declaration of conformity). Failure to carry out this check and if the sealing limit specified in the standard is not observed, the system warranty and the manufacturer’s responsibility shall be void.

Note:
The maximum extension of about 18 meters in the exhaust of the Ø 80 mm flexible corrugated pipe, valid for most boilers, is available with the following configuration:

• intake with 1 m rigid pipe Ø 80 mm with grid + bend Ø 80 mm at 87° and its adapter on the boiler;
• exhaust with bend Ø 80 mm at 87° with its boiler adaptor + 1 m rigid pipe Ø 80 mm to be linked to the shaft;
• use of the terminal C9 Ø 80/125 mm.

The maximum resistance factor equal to “100” is not surmountable because the Boiler would lower its Pn ( Nominal Output ) beyond the minimum threshold for approval.

Important:
In any case, refer to the specific boiler instruc-tion booklet.

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