Danfoss IPS 8 Technical Data, Installation And Use page 9

User Guide | Intelligent Purger System (IPS 8) for Ammonia - Technical data, installation and use
Connection locations
(continued)
General
© Danfoss | DCS (ms) | 2019.06
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).
For this reason, all float valves have been fitted
with a small bypass to avoid the air affecting the
function of the float valve. The compressor (1)
supplies high-pressure gas to the condenser (2),
where it is condensed.
2
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 will be flooded
and it can potentially purge ammonia
liquid.
The purger liquid return legs (c) must
always be vertical or with a downward
slope. Never let drain liquid flow
upwards.
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
make sure the purged non-condensables is discharged into a water
bath of max. 200 liter.
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).
The ammonia liquid condensed in the air purger
must be drained through drain pipe (c) to the LP
side through a float valve (6).
5
Danfoss
IPS 8
pv
c
3
WARNING !
6
1
Low pressure side
Cod. 99000572
BC306932151284en-000101 | 9