1
3
4
2
1
2
3
4
3
5
6
2
1
9a
9b
9c
Valve size
Taille de la vanne
Tamaño de la válvula
Tamanho da válvula
阀门规格
Valve size
Размер клапана
Nm
lb-ft
100-150
100
74
Valve size
Taille de la vanne
Tamaño de la válvula
Tamanho da válvula
阀门规格
Valve size
Размер клапана
Nm
lb-ft
100-150
100
74
Valve size
Taille de la vanne
Tamaño de la válvula
Tamanho da válvula
阀门规格
Valve size
Размер клапана
Nm
lb-ft
100
100
74
125
150
111
150
260
192
© Danfoss | DCS (MWA) | 2016.12
DKRCI.PI.HS1.B4.ML | 520H6627 | 4
ENGLISH
Installation
Refrigerants
Applicable to all common non-flammable
refrigerants, including R717 and R744 (CO
2
)
and all non-corrosive gases/liquids.
Flammable hydrocarbons are not
recommended.
The valve is only recommended for use in
closed circuits. For further information please
contact Danfoss.
Temperature range
–60/+120°C (–76/+248°F)
Pressure
The valves are designed for a max.
working pressure of 52 bar g (754 psi g).
Application
The ICLX is used in suction lines for the
opening against high differential pressure,
e.g. after hot gas defrost in large industrial
refrigeration systems with ammonia,
flourinated refrigerants or CO
2
.
The ICLX opens in two steps:
Step one opens to approx. 10% of the
capacity, when the pilot solenoid valves are
activated.
Step two opens automatically after the
pressure differential across the valve reaches
approximately 1 bar.
External pressure
The external pressure applied to the ICLX
should always be 1.5 bar higher than the inlet
pressure of the valve. This will give the valve
a MOPD of 28 bar. If the external pressure is 2
bar higher than the inlet pressure the MOPD
of the ICLX will be 40 bar.
Electrical wiring
The ICLX valve is a normally closed design.
To ensure that the valve operates as normally
closed it is important that the EVM NC pilot
is mounted in the pilot port marked NC in
the top cover, EVM NO in port NO and the
external pressure to E (fig. 2). For normal
operation mode both pilots should be
energized simultaneously, e.g. same signal
can be used for both pilots.
Coil requirements
Both coils must be IP67.
EVM NC: 10W ac (or higher) for MOPD
up to 21 bar
EVM NC: 20W ac for MOPD 21
→
40 bar
EVM NO: 10W ac (or higher)
The valve will have a malfunction
in systems where the pressure
differential across the valve in normal
open conditions will exceed 1 bar (15
psig). In this case the step two of the
valve will close.
The valve/valve housing can be lifted by
means of eyebolts positioned like shown in
fig. 8a, pos. 11.
Orientation
The valve must be installed with the arrow in
the direction of the flow (fig. 2).
The top cover can be rotated 4x90° in relation
to the valve body.
ICLX 150
The valve must be installed with the spindle
in upwards position 15°/15° (fig. 1b).
ICLX 100 and 125
The valve must be installed with the pilots
pointing in one of the directions shown in fig.
1a. Downwards pointing pilots (any angle) is
not possible.
If the ICLX is installed with a vertical pilot
orientation (see fig. 1a) attention should be
paid to have the EVM NO in lower position. If
needed rotate the top cover.
The valve is fitted with a spindle for manual
opening. Make sure that the external pilot
line is connected to the upper side of the
main line so that any dirt and oil from the
plant will not find its way into the pilot line.
The valve is designed to withstand a high
internal pressure. However, the piping system
should be designed to avoid liquid traps and
reduce the risk of hydraulic pressure caused
by thermal expansion. It must be ensured
that the valve is protected from pressure
transients like “liquid hammer” in the system.
Welding (fig. 5 and 8a)
For heat controlled welding methods and
welding methods ensuring no debris, the
valve can stay assembled during the welding
process.
The top cover (fig. 8a, pos. 2) and function
module (fig. 8a, pos. 3), can be removed
before welding to prevent damage to o-rings
and teflon (PTFE) in the function module.
The function module can be lifted out by
applying a vertical force on the grooves as
shown in figure 3. Additionally eyebolts can
be threaded as shown in fig. 8a, pos. 11 for
external lifting.
The internal surfaces and weld
connections of the enclosed ICLX
valve have been applied with
an anti-corrosion treatment.
In order to maintain the effectiveness
of this anti-corrosion treatment, it is
important to ensure that the valve is
disassembled just prior to the welding /
brazing process being undertaken.
In the event that the function modules are
to be left disassembled for even a short
period, please ensure that the function
modules are further protected by placing
in a polyethylene bag or by applying a rust
protection agent (e.g. refrigeration oil or
BRANOROL) on the surfaces.
Only materials and welding methods,
compatible with the valve body material,
must be applied to the valve body.
Avoid welding debris and dirt in the
valve body and the function module. The
valve body must be free from stresses
(external loads) after installation.
The valves must not be mounted in systems
where the outlet side of the valve is open
to atmosphere. The outlet side of the valve
must always be connected to the system
or properly capped off, for example with a
welded-on end plate.
