Chapter 7: Installation
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21 | Installation, Operation & Maintenance Instructions EASYCHLORGEN
7.2.6 Ventilation
DANGER!
Danger to life through explosions!
Incorrect installation of the ventilation exhaust piping may cause
irreversible damage to the system components and may even
create an explosive atmosphere!
Make sure to install ventilation pipe works correctly.
The EASYCHLORGEN and product tank(s) each require the
installation of a ventilation pipe duct circuit to a suitable exterior
outside termination vent point (normally at high level >3m/10ft), in
order to safely vent any hydrogen gas liberated from the
electrolytic process.
The exterior vent pipe termination points must be installed so as
to create a Zone 2 area around the opening of the vent. Refer to
section 7.2.7 “External Zone 2 requirement” for guidance.
Plan each pipe route as direct and straight as possible and
always on an incline from the vent connection located at the top
of the EASYCHLORGEN and tank(s) to avoid any condensation
trap.
TANK VENT PIPE INSTALLATION EXAMPLE
Use wide radius bends instead of elbows to reduce air friction
where possible. DO NOT install any unions or any disconnection
points at any point along the vent pipe work. Where the
EASYCHLORGEN vent pipe circuit is >30m in length, the pipe
diameter must be increased to maintain required minimum
airflow.
To comply with Health & Safety requirements the vent
termination point on the external wall should not be located
directly beneath any air intake and must be located at least 0.8m
from any window or possible source of ignition. If the external
vent pipe work is located in a public area, or there is a possibility
of vandalism, it should be protected with a suitable steel
cage/pipe capping.
It is advisable to provide the following warning signs in the plant
room and exterior vent point:
•
Warning Sign
•
No Smoking
•
No Naked Flames
Precondition for action:
suitable outside vent points provided
adequate natural air room ventilation
Perform the following steps:
1.
Install a 160mm (6”) diameter rigid PVC ventilation pipework
system from the socket connection located on top of the
EASYCHLORGEN cabinet to the exterior vent point
provided.
2.
Install at l
east ≥90mm (4”) diameter
rigid ventilation
pipework system from the top of the product tank(s) to an
exterior vent point.
3.
Provide and fix appropriate signage to vent pipework and at
each vent exhaust point in accordance with local rules.
Ventilation installation complete
.
7.2.7 External Zone 2 Ventilation requirement
DANGER!
Danger to life through explosions!
An external Zone 2 area clearance is required at the external
vent opening to avoid potential explosive environment!
Make sure to apply the correct Zone 2 external clearance.
The following Zone 2 requirements are necessary at the point of
the external vent as indicated in section 7.4 “Installation
schematics”:-
System type
External vent Zone 2 radius
EASYCHLORGEN 4250
3.5 m
EASYCHLORGEN 8500
5.0 m
If in doubt, contact your supplier for further advice.
External ventilation point
Zone 2 radius
