Installation Examples; Technical Data - Vetus AIRVENT V Instructions D'installation

Introduction
There are three types of air vents:
Airvent H : Air vent without valve with air pipe,
13 mm (0.5") - 32 mm (1.3") connection
Airvent V : Air vent with valve, 13 mm (0.5") - 32 mm (1.3")
connection
AirVH 38 : Air vent without valve with air pipe,
38 mm (1.5") connection
Installation examples
The air vents can be used in a number of different situations.
N.B.: The numbers refer to the numbers on the drawing on the
back.
1 Exhaust System
The air vents can be fitted in the coolant water pipe of a water-
injected exhaust system, with the water-injection point 'C'
below, or less than 15 cm (6") above the water-line.
A Air vent without valve
B Air vent with valve
2 Toilet
The air vents can be fitted in the outlet pipe of a toilet installed
under the water-line.
3 Waste water tank
The AirVH 38 air vent can be fitted in the outlet pipe between
pump and hull access when the waste water tank is installed
below the waterline and the hull access is also below the water-
line.
Installation
Install the air vent at least 40 cm (16") above the waterline, but
not more than 2 metres (6.6 ft) above the waterline. In a sail-
ing ship, the air vent should be installed as close to midships
as possible, this will prevent the air vent coming below the
required 40 cm (16") above the waterline when the ship heels
under sail.
An air vent pipe must be connected to air vents without valve.
The air vent pipe should be fitted so that it drains towards the
hull. The hull outlet should be at least 15 cm (6") above the
waterline. This applies to a sailing ship even when it is heeling
under sail.
In the case of installation example 1, a small amount of water
will pour out of the outlet while the engine is running.
An air vent pipe can be fitted to the air vent with valve. This will
drain away any water leaks.
Air vent H and V
A 13 mm (0.5") hose can be connected
straight to the bend section connector.
Air vents
If a hose with a larger diameter
is used, a section will need to
be sawn off.
For 19 mm (0.75") diameter
hose: Saw off section A.
For 25 mm (1.0") diameter
hose: Saw off section B.
For 32 mm (1.25") diameter
hose: Saw off section C.
After sawing the relevant sec-
tion off, carefully de-burr the
connector.
Fit every hose connection
using a stainless steel hose
clamp.
AirVH 38
A hose with a diameter of
38 mm (1.5") can be connect-
ed directly to the bend section
connector. Fit every hose con-
nection using stainless steel
hose clamps.
Air vent pipe
Drill a 10 mm (0.4") diameter hole through the ship's hull for the
outlet, and fit with a adhesive sealant. Fit the air vent pipe to the
hull outlet and to the air vent with the hose clamps supplied.
Maintenance
With air vents without valve, check the air vent pipe regularly
for blockages.
With the air vent with valve, the following
maintenance should be carried out regularly:
Regularly remove salt, rust and dirt from all
valve components and from the valve hous-
ing by rinsing out with clean water.
Remove the cap (1) in order to take the valve
out of the housing.
Spray the valve components with a Teflon
spray before refitting.
Check the valve operation (vacuum suction
on the air vent pipe connection) and the cap
sealing before returning to use.
Technical data
Air vent H and V:
Bend section material
Air Vent Valve, seat material
valve material : plastic
spring material : stainless steel
Sensitivity
Hull outlet material
Hose
AirVH 38:
Bend section material
ENGLISH
De-burr
: plastic (PP)
: plastic
: 8 cm (3.15") water
: plastic
: 8 mm (0.3") x 14 mm (0.55"),
4 metres (13.1 ft) long
: plastic (PA66)
030405.03
3