Airflow 100mm Wallvent User manual

80001286 –Issue 1 01/23
Page 1 of 13
Airflow 100mm & 125mm
Wallvent Installation Guide

80001286 –Issue 1 01/23
Page 2 of 13
Contents
100mm Wallvent Fixing External Grille.......................................5
100mm Wallvent Fixing Internal Grille ........................................8
125mm Wallvent Fixing External Grille.......................................9
125mm Wallvent Fixing Internal Grille ......................................11

80001286 –Issue 1 01/23
Page 3 of 13
1. To minimise cracking, drill a pilot hole and then core
drill from both sides into the cavity.
NOTE: Horizontal ducting, including ducting in walls should
be arranged to slope slightly downwards away from the
internal grille to prevent backflow of any moisture into the
property.
Use a 102mm dia. Core drill for Airflow 100mm Wallvent.
Use a 127mm dia. Core drill for Airflow 125mm Wallvent.
1. Measure the wall thickness and cut the duct to length.
2. The tube should be flush to the inside and outside
surfaces.
Fig.1

80001286 –Issue 1 01/23
Page 4 of 13
NOTE: Airflow 125mm Wallvent duct comes in three detachable
pieces.
3. To ensure the integrity of the wall, each end of the cut duct
between the duct and the wall should be sealed.
The internal and external grilles can be fitted using either
screws or sealant/mastic. However, the following steps can
be followed for guidance purposes:
Fig.2 - For Airflow 100mm Wallvent only.

80001286 –Issue 1 01/23
Page 5 of 13
100mm Wallvent Fixing External Grille
1. The external grille can be fixed to the brickwork using
screws in the preformed holes located on the reverse
side of the grille. (Fittings not supplied.)
2. Carefully unclip the weather hood from the grille.
Clasps are located on the reverse of the grille below
the spigot.
3. Next, unclip the louvre panel from the grille backplate
by using a flat head screwdriver in the gap shown
below.
Fig.3

80001286 –Issue 1 01/23
Page 6 of 13
4. The preformed holes for fixing the external grille to the
brick will be located at each corner of the backplate.
Fig.4

80001286 –Issue 1 01/23
Page 7 of 13
5. Apply a bead of sealant around the spigot of the
external grille. (Sealant not supplied.)
6. Insert the external grille inside the duct from the
outside.
7. Before the sealant sets, ensure the grille is flush and
level before screw fixing.
8. Once fixed, re-attach the louvre panel and weather
hood ensuring they are securely in place.
Fig.5

80001286 –Issue 1 01/23
Page 8 of 13
100mm Wallvent Fixing Internal Grille
1. Unclip the louvre panel from the grille backplate by
using a flat head screwdriver in the gap shown in Fig.3.
2. The preformed holes for fixing the internal grille to the
internal wall will be located at each corner of the
backplate –refer to Fig.4.
3. To fix the internal grille, apply a bead of sealant around
the spigot.
4. Insert the internal grille backplate into the duct.
5. Before the sealant sets, ensure the grille is flush and
level before screw fixing.
Fig.6

80001286 –Issue 1 01/23
Page 9 of 13
125mm Wallvent Fixing External Grille
1. The external grille can be fixed to the external
brickwork using the preformed holes located on the
reverse side of the external grille in each corner.
Fittings not supplied.
2. Punch-through the holes on the reverse side of the
external grille using a suitable tool, avoiding damage to
the plastic panel.
Fig.8

80001286 –Issue 1 01/23
Page 10 of 13
3. Apply a bead of sealant around the spigot of the
external grille. (Sealant not supplied.)
4. Insert the external grille to the duct from the outside.
5. Before the sealant sets, secure the grille to the wall using
the punched holes in each corner, ensuring the grille is
flush and level.
Fig.9