Vaillant ecoTEC plus 412 Installation Manual page 17

4. Secure the air pipes to each other by screwing the
overlapping air pipes together using the supplied self-
tapping screws on the underside (1).
5. Seal the gap in the telescopic air pipe using the sup-
plied adhesive tape (2).
6. Slide the air/flue pipe (1) with the flexible collar through
the wall.
7. Pull the air/flue pipe back until the collar lies fully on the
external wall.
8. Secure the air/flue pipe with mortar and leave the mor-
tar to harden.
9. Install the collar on the inside of the wall.
10. Connect the wall/roof duct to the product using ex-
tensions, elbows and, if required, a sliding sleeve.
(→ Section 5.4)
5.3.3 Installing the roof duct
▶
Insert the air/flue pipe (1) into the dormer.
5.4 Connecting the product
1 2 3
7
6
Install the product (7) – see the installation instructions
1.
for the product.
2. Connect the 87° elbow (1) to the connector for the
air/flue pipe (6).
3. Fit the sliding sleeve (3) with the sleeve as far as it will
go onto the wall/roof duct (4) or the extension (5).
4. If required, install the extensions .
5. Connect the sliding sleeve to the 87° elbow.
6. Install the air pipe clamp (2) for the sliding sleeve.
7. Alternatives 1:
Condition: Wall/roof duct without extension
▶
Install the sliding sleeve. (→ Section 5.19.1)
Alternatives 2:
7.
Condition: Wall/roof duct with extension
▶
Install the extensions. (→ Section 5.19.2)
▶
Install the elbows (→ Section 5.19.4).
▶
Install the sliding sleeve. (→ Section 5.19.1)
▶
Connect all of the pipe joints with air pipe clamps.
(→ Section 5.19.5)
8000026412_01 Air/flue pipe installation manual
1
5 4
Direct, rear, telescopic wall duct –
5.5
0020228140 – diameter 60/100 mm
5.5.1 Scope of delivery
456 - 698
1
4
1 Telescopic wall duct
2 Collar
5.5.2 Determining the pipe length and the location
of the wall duct
120 - 500
1. Determine the pipe length (→ Installation instructions
for the boiler) and define the location of the wall duct.
2. Measure the clearance Y from the external wall to the
installation surface for the boiler.
3. Set the required pipe length:
–
At least: Y + 24 mm
–
Maximum: Y + 28 mm
–
If you install the collar, add 12 mm to the total pipe
length.
–
If the terminal is below a roof overhang or a ho-
rizontal surface, you can pull the wall duct up to
500 mm out of the wall in order to guarantee that
the flue gases are extracted without any obstruc-
tions.
Note
Do not shorten the telescopic flue pipe.
If the required pipe length cannot be
achieved, use extensions or the horizontal
wall/roof duct.
Ø167
2
3
3 Locking screws (4 pcs)
4 Sealing tape
Y
24 - 28
13
17