Danfoss IPS 8 Technical Data, Installation And Use page 10

User Guide | Intelligent Purging System (IPS 8) for Ammonia - Technical data, installation and use
Connection locations
(continued)
General
10 | BC306932151284en-000201
Air purger installation in a high-pressure liquid level controlled installation
For systems with a high-pressure liquid level
control, the air will collect in the float valve (3).
(See Fig. 8).
The compressor (1) supplies high-pressure gas to
the condenser (2), where it is condensed.
The float valve (3) will flash any liquid back to
the LP side. The air purger (5) must be connected
to the float valve through a solenoid valve (pv).
Fig. 8 Purger connections (pv). Drain Piping (c) must be vertical/downward slope
The air purger must always be mounted
above the highest liquid level to be able
to drain the ammonia condensed in it.
Otherwise, the air purger can flood and
potentially purge ammonia liquid.
The purger liquid return leg (c) must
always be mounted vertically or at
minimum, with a downward slope.
The solenoid valves at the connection
points must never be activated at the
same time. Finalize purging at one
location before switching to the next.
Follow the installation guide strictly during Purger installation.
Install the Purger unit in a location where the bottom flange level
and any gas inlet connection level is above any possible ammonia
liquid level.
Liquid drain piping from the purger must always have a downward
slope.
Install a shut off valve close to the bottom flange entrance to
enable removal of the unit and closing for high pressure ammonia
gas.
Connect proper resistant piping to the purging outlet pipe and
ensure the purged non-condensables are discharged into a water
bath of max. 200 liter.
The ammonia liquid condensed in the air purger
must be drained through drain pipe (c) to the LP
side via a float valve (6).
WARNING !
Cod. 99000572
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