Connection Locations - Danfoss IPS 8 Technical Data, Installation And Use

User Guide | Intelligent Purger System (IPS 8) for Ammonia - Technical data, installation and use

Connection locations

8 | BC306932151284en-000101
Air purger installation in a low-pressure liquid level controlled installation
The correct locations for the air purger to be
connected to the ammonia plant are:
(See fig. 6 and 7)
- on top of the receiver or
- on top of the liquid in the drop leg from the
condenser.
The air purger (5) is connected to the two purge
points through solenoid valves (px and py).
Note that only one solenoid should be open at
2
Fig. 6 Purger connections (px) & (py). Drain piping (c) must be vertical/downward slope
Alternatively, the air purger draining of liquid can
be done through an HP float valve (6) to the low
pressure side (see fig. 7).
2
Fig. 7 Purger connections (px) & (py). Drain piping (c) must be vertical/downward slope
any given time. Otherwise the liquid column in
the condenser will be short-circuited.
The air purger must have its own liquid return
drop leg (c) connected in parallel with the
condenser's drop legs (b).
When the purger is connected to the receiver,
the liquid level in the air purgers drop leg (c)
will be equal to the receiver level (3); when it is
connected to the condenser outlet, the level will
be equal to the level in the condenser drop leg (b).
py
Danfoss
IPS 8 5
Liquid level
c
px
b
py
Danfoss
IPS 8
5
Liquid level
c
px
b
6
1
a
3
4
1
a
3
4
Low pressure side
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