Version
Document Title
Release Date
02
Narrow Body EL2.1 (REV. A)
–
Owner's Manual
2021-03-22
EL 2.1 -
Owner’s
Manual - Rev.02
–
Mar 2021
20
Several units of EL2.1s can be safely connected together.
In order to manage the hydrogen purge in a simple way,
simply connect as many devices together as needed. The
recommended way to do this is to combine up to 5 (five)
EL2.1s and then connect the purge lines via a common
line. If a dryer is also integrated, its purge outlet can be
connected in parallel to the installed Enapter hydrogen
generators.
The common purge line on the side of the devices offers
the advantage that individual connections do not
require piping with strict tolerances as U-Bend
connections are simple to manufacture and tolerant to
deformation, when compared to straight piping pieces
directly connected in front of the hydrogen generator.
Additional benefits include a prolonged service life for
the pipe fitting connectors and the ability to add and
remove devices from a cabinet without taking all the
piping off. This eases maintenance times and costs
significantly.
Never obstruct the output of the purge
–
do not place any check valves, or other system components
which stop the flow of air to equalise the internal stack pressure, into the purge line.
Please be aware that when larger hydrogen systems are created by putting together several
modules, the piping downstream may have to be sized differently. It is the customer's/system
integrator's responsibility to ensure adequately sized purge piping is selected, which does not limit
the purge flow. The customer/system integrator must ensure that the purge outlet satisfies all
relevant local rules and regulation, in terms of noise emission, risk assessments, maintenance and all
other relevant areas.