ICM motor operated valves belong to the ICV
family and are one of two product groups.
ICV types
– ICS - Pilot operated servo valve
– ICM - Motor operated vave
The motor operated valve comprises four main
components: Valve body, top cover, function
module and Actuator. On ICM 20 – 65 the top
cover and function module will be combined.
ICM are motor operated valves driven by actuator
type ICAD.
ICM valves are designed to regulate an expansion
process in liquid lines with or without phase
change or control pressure or temperature in dry
and wet suction lines and hot gas lines. ICM valves
are designed so that the opening and closing
forces are balanced, therefore, only two sizes of
ICAD actuators are needed for the complete range
of ICM from DN 20 to DN 150. The ICM motor
operated valve and ICAD actuator assembly offers
a very compact unit with small dimensions.
• V-port regulating cone ensures optimum
regulating accuracy particularly at part load.
• Modular Concept
– Each valve body is available with several
different connection types and sizes.
– Valve overhaul is performed by replacing
the function module (ICM 20 – 65).
– Possible to convert ICM motor operated
valve to ICS pilot operated servo valve.
– Spare parts available for ICM 100 – 150.
• Manual opening possible via ICAD or Multifunction tool.
• PTFE seat provides excellent valve tightness.
• Magnet coupling - real hermetic sealing.
• ICAD 600A / 1200A include encoder function
that will provide a true valve position feedback
to Danfoss controller or non-Danfoss control
systems.
• Classification: DNV, CRN, BV, EAC etc.
To get an updated list of certification on the
products please contact your local Danfoss Sales
Company.
AI236186442940en-US0407 | DKRCI.PD.HT0.C4.22 | 1
Data sheet | Motor operated valves, type ICM and actuators type ICAD
The ICM Concept ...............................................................................................................................................................................4
Technical data (valve) .......................................................................................................................................................................6
Function (valve) ................................................................................................................................................................................. 7
ICAD:
Features (actuator) ....................................................................................................................................................................8
Technical data (actuator) ......................................................................................................................................................... 8
Function (actuator) ................................................................................................................................................................. 11
Operating the ICAD menu .................................................................................................................................................. 11
Parameter list ............................................................................................................................................................................ 12
ICAD protection cap ............................................................................................................................................................... 14
ICAD-UPS for ICM 20 – 150 ................................................................................................................................................. 15
Material specification ................................................................................................................................................................... 17
Liquid line with / without phase change ........................................................................................................................ 25
Pumped Liquid line without phase change .................................................................................................................. 29
Wet suction line ....................................................................................................................................................................... 33
Dry suction line ....................................................................................................................................................................... 37
Discharge line ........................................................................................................................................................................... 41
Dimensions and weight ........................................................................................................................................................ 54
Data sheet | Motor operated valves, type ICM and actuators type ICAD
Introduction
The ICM motor operated valve and ICAD actuator
combinations are as follows:
Actuator
Valve size
ICAD
600A
ICM 20ICM 40
ICM 25ICM 50
ICM 32ICM 65
ICAD
1200A
ICM 100
ICM 125
ICM 150
ICAD 600A / ICAD 1200A
ICAD actuators can be controlled using the
following signals:
• 0 – 20 mA
• 4 – 20 mA (default)
• 0 – 10 V
• 2 – 10 V
• Digital input for ON / OFF function
• Two digital inputs for floating 3-point control
(open - neutral - close)
ICAD actuators can also operate an ICM valve as
an ON / OFF function supported by a digital input.
The ICM valve can be operated manually via the
ICAD actuator or the Multi-function tool for ICM
(see the ordering section).
Fail Safe supply options
In the event of a power failure, multiple fail safe
options are possible, provided that a ICAD-UPS or
similar is used.
During power failure, ICM can be selected to:
- Close ICM
- Open ICM
- Stay in the same position, as when power
failure occurs
- Go to a specific ICM valve opening degree
See the section ICAD UPS for further information.
Please note: a fail safe supply (battery or UPS) is
required.
Data sheet | Motor operated valves, type ICM and actuators type ICAD
The ICM Concept
The ICM concept is developed around a modular principle. This gives the possibility
of combining function modules and top covers with special valve body size that is
available in a variety of connection possibilities.
• There are nine valve bodies available.
ICV 20ICV 25ICV 32ICV 40ICV 50ICV 65
ICV 100ICV 125ICV 150
• Valve bodies in the sizes ICV 20 – ICV65 are
available with a range of undersizes through
oversized connection sizes and types.
ICV 100 – ICV 150 are available in butt-weld
ANSI nominal sizes
Data sheet | Motor operated valves, type ICM and actuators type ICAD
Design (valve)
Technical data (valve)
Connections
There is a very wide range of connection types
available with ICM valves:
• BW: Butt weld, ANSI (B 36.10)
• SOC: Socket weld, ANSI (B 16.11)
The ICM valves are approved in accordance with
the European standard specified in the Pressure
Equipment Directive and are CE marked.
For further details / restrictions - see Installation
Instruction.
• ODS: Solder connection, ANSI (B 16.22)
• FPT: Female pipe thread (ANSI/ASME B 1.20.1)
Approvals
The ICV valve concept is designed to fulfil global
refrigeration requirements.
ICM is CE, UL and CRN approved
For specific approval information, please contact
Danfoss.
ICM valves
Nominal bore
Classified for Fluid group I
Category Article 3, paragraph 3 IIIII
• Refrigerants
ICM 20, ICM 100, ICM 125 and ICM 150:
Applicable to HCFC, non flammable HFC, R717
(Ammonia) and R744 (CO2)
ICM 25-65:
Applicable to HCFC, non flammable HFC, R717
(Ammonia), R744 (CO2) and R1234ze
Use with flammable hydrocarbons cannot be
recommended. For further information please
contact your local Danfoss sales company.
• Temperature range:
Media: -60 – 120 °C / -76 – 248 °F.
When used in liquid refrigerant above
75 °C / 167 °F, please contact Danfoss
• Pressure
DN≤ 25 (1 in.)
DN 32-65 (1 ¼ – 2 ½ in.)DN 80-125 (3 – 5 in.)
• Max. openening pressure differential (MOPD)
–ICM 20 – 32: 52 bar / 750 psi
– ICM 40: 40 bar / 580 psi
– ICM 50: 30 bar / 435 psi
– ICM 65: 20 bar / 290 psi
– ICM 100 20 bar / 290 psi
– ICM 125 20 bar / 290 psi
– ICM 150 20 bar / 290 psi
• Time to move from Closed to Open position or in
reverse order with maximum selected speed at IC
AD.
ICM 20: 3 Sec. ICM 65: 13 Sec.
ICM 25: 7 Sec. ICM 100: 25 Sec.
ICM 32: 8 Sec. ICM 125: 35 Sec.
ICM 40: 10 Sec. ICM 150: 45 Sec.
ICM 50: 13 Sec.
The valve is designed for:
Max. working pressure: 52 bar g / 754 psi g
• Surface protection
ICM 20 – 150:
The external surface is zinc-chromated to provide
good corrosion protection.
Data sheet | Motor operated valves, type ICM and actuators type ICAD
Function (valve)
P
j
i
h
2
k
ICM 20
ICM 25-65
ICM motor operated valves are designed for use
with the ICAD, Industrial Control Actuator with
Display.
The driving force from the actuator is transferred
via a magnetic coupling (a) through the stainless
steel top housing (b) and thus eliminates the need
for a packing gland. The rotational movement of
the magnetic coupling (a) is transferred to a spindle
(c) which in turn provides the vertical movement
of the piston (d) and the valve seat (e), to open and
close the valve. The closing force of the actuator,
combined with the the valve seat (e) and PTFE
valve plate (f), provides an effective seal to prevent
leakage across the valve port, when the valve is in
the closed position. To prevent damage to the PTFE
valve seat (e) and plate (f) from system debris, it
is recommended that a filter is installed upstream
of the valve. Please refer to FIA filter / strainer
literature for selection and ordering.
ICM 20 – 65:
Valve inlet pressure (P1) acting on the underside
of the PTFE valve seat (e) also passes through the
hollow piston assembly (d) on to the top of the
piston (d) and balances the pressure acting on the
piston (d). Any trapped liquid across the throttle
cone (g) is allowed to equalise down to the valve
outlet without affecting the valve performance.
ICM 100 – 150
ICM 100 – 150:
Valve inlet pressure (P1) acting on the underside
of the PTFE valve plate (h) also passes through the
equalization hole (i) and ensures that the servo
piston (j) is pressure balanced. This will equalize P1
and P2. During an opening operation of the valve,
the pilot piston (k) will be raised from its valve
seat inside the servo piston (j). This allows the P2
pressure to escape through the servo piston (j) to
the outlet of the valve. The pressure P1 will act on
the underside of the servo piston (j) and force it
to open. This will close the gap between the pilot
piston (k) and the servo piston (j) until the pressures
P1 and P2 are equalized again. When there is no
pressure difference between P1 and the outlet of
the valve the pilot piston (k) is attached to the servo
piston (j) ensuring it to open up.
ICAD
There are two sizes of ICAD actuator that covers
the range of valves from ICM 20 to ICM 150. The
actuators have a fully weather protected enclosure
with none of the moving parts exposed to the
environment.
The fast acting actuators and balanced valve design
results in the valve being able to move from the
fully closed to the fully open position in between
3 to 45 seconds depending on valve size and ICAD
setup.
Data sheet | Motor operated valves, type ICM and actuators type ICAD
ICAD
Actuator types ICAD 600A and 1200A are
dedicated for use with ICM motor operated valves.
There are only two sizes of ICAD actuators that
cover the range of valves from ICM 20 to ICM
150.
The ICAD is controlled via a modulating
analogue signal (e.g. 4 – 20 mA / 2 – 10 V) or a
Features (actuator)
• Designed for industrial refrigeration installations.
• Advanced and high speed Digital Stepper Motor
Technology
• Seven segment LCD display and three
programming keys included
• Valve opening degree can be observed
continuously.
• Can easily be configured to different applications
on-site (change speed, ON / OFF, etc.)
• Modulating, ON / OFF operation
• Multiple speed selection during operation
• Logging of old alarms
• Password protection
• Control input signal :
4 – 20 mA, 0 – 20 mA, 0 – 10 V, 2 – 10 V, one or
two digital inputs.
• Position feed back : 0 – 20 mA, 4 – 20 mA (ICM)
• 3 Digital outputs for feedback
Technical data (actuator)ICAD 600A and ICAD 1200A can be used together
with following Danfoss valves.
digital ON / OFF signal. ICAD incorporates
an advanced MMI (Man Machine Interface),
including continuous display of Opening
Degree, which gives the user a very advanced
and flexible setup procedure that can meet
many different applications.
• Resolution: 20 micron/step
(0.02 mm stroke pr. step)
• Auto Calibration, Neutral zone
• In the event of a power failure, multiple fail safe
options are possible. During power failure, ICM
can be selected to:
Close ICM,
Open ICM,
Stay in the same position, as when power
failure occurs
Go to a specific ICM valve opening degree
• Hermetic magnetic motor
• Enclosure: IP67 ~ NEMA 6
• ICAD 600A / 1200A ensures an acurate feedback
on the valve position.
ICAD 600AICAD 1200A
ICM 20ICM 40
ICM 25ICM 50
ICM 32ICM 65
ICM 100
ICM 125
ICM 150
• Materials
Housing
Aluminium
Top part of ICAD
PBT thermo plastic
• Weight
ICAD 600A: 1.2 kg / 2.64 lb
ICAD 1200A: 1.9 kg / 4.19 lb
• Temperature range (ambient)
-30 – 50 °C / -22 – 122 °F
• Enclosure
IP 67 (~NEMA 6)
• Electrical connection
Connection to ICAD is done via M12 connectors.
ICAD has two M12 male connectors build-in:
Power supply: 4 poled M12 male connector
Control signals: 8 poled M12 male connector
ICAD can be delivered with (1.5 m. / 60 in.) or
without cables with M12 female connectors:
Power Supply cable with 4 poled M12 female
connector: 3 x 0.34 mm2 (3 x ~22 AWG)
Control cable with 8 poled M12 female
connector: 7 x 0.25 mm2 (7 x ~24 AWG)
Cable set with M12 female connectors in other
lengths are available. See the section "Spare parts
and accessories".
Data sheet | Motor operated valves, type ICM and actuators type ICAD
Technical data (cont.)
Electrical data
Please observe cable voltage drop
Distance between the applied DC transformer and the ICAD terminal box may
cause a voltage drop. Cross section of cables and size of DC transformer must
be calculated so that the voltage at all time at the ICAD terminal box*, both
during standstill and during operation of ICAD, is within this range:
Prefabricated ICAD cable length
Code number
24 Volt DC
ONLY
Voltage ICAD terminal Min.212223 24
(600A / 1200A) [V DC]Max.26.4
* Do not measure inside the ICAD itself.
1.5 m
027H0426
3 m
027H0438
10 m
027H0427
15 m
027H0435
Supply voltage is galvanic isolated from Input/
Output.
Supply voltage: See above table
Load: ICAD 600A: 1.2 A
ICAD 1200A: 2.0 A
Fail safe supply: See above table
Load: ICAD 600A: 1.2 A
ICAD 1200A: 2.0 A
Analogue Input - Current or Voltage
Current: 0/4 – 20 mA
Load: 200 W
Voltage: 0/2 – 10 V DC
Load : 10 kW
Analogue Output: 0/4 – 20 mA
Battery capacity: For each open/closed cycle
Speed Parameter i04ICM 20ICM 25ICM 32
ICAD 600A
ICAD 1200A
ICAD 1200A
Max. (i04 = 100)2 mAh5 mAh5 mAh
Min. (i04 = 1)200 mAh467 mAh533 mAh
Speed Parameter i04ICM 40ICM 50ICM 65
Max. (i04 = 100)17 mAh22 mAh22 mAh
Min. (i04 = 1)1667 mAh2167 mAh2167 mAh
Speed Parameter i04ICM 100ICM 125ICM 150
Max. (i04 = 100)54 mAh65 mAh76 mAh
Min. (i04 = 1)5318 mAh6351 mAh7501 mAh
Load : ≤ 250 W
Digital Input - Digital ON / OFF input by means of
volt-free contact (Signal / Telecom relays with goldplated contacts recommended) – Voltage input used
ON: Contact impedance < 50 W )
OFF: Contact impedance > 100 k W
Digital Output - 3 pcs. NPN transistor output
External supply: 5 – 24 V DC
(Same supply as for ICAD can
be used, but please note that the
galvanically isolated system will
then be spoiled)
Output load: 50 W
Load: Max. 50 mA
Data sheet | Motor operated valves, type ICM and actuators type ICAD
Function (actuator)
The design of ICAD is based on a digital stepper
motor technology combined with an advanced
MMI (Man Machine Interface), that gives excellent
possibilities for having a high degree of flexibility
with the same type of ICAD actuator.
The ICAD display will continuously display the ICM
valve opening degree in % unless there is an alarm
or the parameter list is being viewed. The display
will also indicate Mod if being controlled by an
analog input signal (modulating mode) or if being
controlled by digital inputs the display will indicate
Low, Med or High depending on the speed setting.
The advanced menu system will allow several
parameters to be ajusted to obtain the required
function. Among these are:
• Analog input for modulating control
0 – 20 mA or 4 – 20 mA
0 – 10 V or 2 – 10 V
• Digital Inputs
ICAD can be configured to support one or two
digital inputs.
When using one digital input for ON / OFF
control, 0 – 10 V can not be used at the same
time.
When using two digital inputs for floating
3 point control, the analog input (0/2 – 10 V, 0/4 –
20 mA) and Analog Output (0/4 – 20 mA) can not
be used at the same time.
• Analog output
0 – 20 mA or 4 – 20 mA
• Automatic or manual control
• Change of ICM valve speed
• Automatic calibration
• Multiple Fail Safe set-up options during power cut
A password protection has been linked to the
parameter of entering the correct ICM valve to
avoid unintentional and non-authorised operation.
ICAD can manage and display different alarms.
If an alarm has been detected the display will
alternate between showing: Actual alarm present
and Opening Degree of ICM valve. If more than one
alarm is active at the same time the alarm with the
highest priority will take preference. The alarm with
the highest priority is shown on the display.
All alarms will automatically reset when
disappearing.
Previous alarms can be recalled for traceability and
service purposes.
Any active alarm will activate the common digital
alarm output.
ICAD provides two digital output signals to 3rd
party control equipment (e.g. PLC) indicating if the
ICM valve is completely open or completely closed.
Operating the ICAD menu1. To access the ICAD actuator menu, press and hold the middle button (2) until the menu appears.
2. Once you are in the menu, use the UP (3) and DOWN (1) arrows to move through the list of
parameters.
3. To display and/or change the value of the parameter, press the middle button (2) to view the current
settings.
4. a) To change the value of a parameter, use the up or down arrow to establish the new value for that
parameter.
5. b) Once the new value for the parameter has been selected, press the middle button to save the
change and return to the menu.
6. Repeat this procedure for all parameters.
7. Exit from the parameter list by pressing and holding the middle button for 2 seconds or simply wait
for the ICAD to return to the main display (approx. 20 seconds).
Check supply to ICADA5Alarm ONIf supply voltage < 18 V
Calibration extended failedA6Alarm ONCheck valve type selected.
Thermal overloadA8Alarm ONICAD stepper motor temperature too high
Valve lockedA9Alarm ONOnly active if i16 = 1
A4Alarm ONIf 5 V < fail safe supply
If an alarm has been detected the ICAD display (fig. 2) will alternate
between showing actual alarm and present Opening Degree.
If more than one alarm is active at the same time the alarm with the
highest priority will take preference. A1 has the highest priority, A9 the
lowest.
At start-up A1 will be displayed until parameter
Carry out:
1) Power OFF and Power ON
If A2 still active.
2) Make a Reset to factory setting
If A2 still active. Return ICAD to Danfoss
Not active if ¡01 = 2, or ¡02 = 2
When ¡03 = 1 and AI A > 22 mA
When ¡03 = 2 and AI A > 22 mA
or AI A < 2 mA
When ¡03 = 3 and AI A > 12 V
When ¡03 = 4 and AI A > 12 V
or AI A < 1 V
<18 V. Enabled by
Check presence of foreign debris inside ICM valve
If the ICM valve is locked for more than 15 seconds (unable to reach its requested
position) A9 will flashin display.
A9 alarm can only be reset by Power OFF / ON of ICAD
¡08
Any active alarm will activate the Common Digital Alarm output
(Normally Open).
All alarms will automatically reset them-selves when they physically
disappear.
Old alarms (alarms that have been active, but have physically
disappeared again) can be found in parameter ¡11.
¡26
is set
Parameter list - Valid for software versions i58=9 and parameter i59=18 and onwards
DescriptionICAD
OD (Opening degree)-0100-ICM valve Opening Degree in % is displayed during normal operation.
Main switch for manual
opearation
Operation mode¡02121YesNoOperation mode
Analog input signal¡03142YesNoType of AI signal from external controller
Speed
In Modulating Mode
Opening/closing speed
In ON / OFF Mode
Opening speed
Automatic calibration¡05020NoNoNot active before ¡26 has been operated.
parameter
¡01121YesNoInternal main switch
¡04110050/ 100YesNoSpeed can be set in % of full speed. Max. speed is 100 % - Not active in manual operation
Min Max Factory
Setting
Setting
stored
Pass
Comments
word
Running display value (see ¡01, ¡05).
1: Normal operation
2: Manual operation. Valve Opening Degree will be flashing. With the down
arrow and the up arrow push buttons the OD can be entered manually.
1: Modulating – ICM positioning according to Analog Input (see ¡03)
2: ON / OFF - operating the ICM valve like an ON / OFF solenoid valve
controlled via Digital Input. See also ¡09.
3: Neutralzone / 3 point control. Increase / Decrease Opening Degree by
Digital Input. See ICAD instructions for wiring diagram
1: 0 – 20 mA
2: 4 – 20 mA
3: 0 – 10 V
4: 2 – 10 V
(¡01 = 2)
If ¡26= 1 – 3 then factory setting =100
If ¡26= 4 – 9 then factory setting =50
If ICM is opening and (¡04 < = 33) or ICM is closing and (¡14 < = 33)
=> Low is displayed.
If ICM is opening and (33 < If ¡04 < = 66) or ICM is closing and (33 < If ¡14 < = 66)
=> Med is displayed.
If ICM is opening and (¡04 > = 67) or ICM is closing and (¡14 > = 67)
=> High is displayed
Always resets to 0 after calibration.
CA will flash in the display during calibration,
if Enter push button has been activated for two seconds
0: No Calibration
1: Normal forced calibration - CA flashing slowly
2: Extended calibration – CA flashing rapidly
Data sheet | Motor operated valves, type ICM and actuators type ICAD
Service parameters (view only)
DescriptionICAD
parameter
OD %¡500100%ICM valve Opening Degree
AI [mA]¡510100mA Analog input signal
AI [V]¡520100VAnalog input signal
AO [mA]¡530100mAAnalog output signal
DI Digital input Status¡5401-DI signals. Depending of ¡02
DO Status for ICM closed¡5501-1: DO = ON when OD < 3 %;
DO status for ICM opened¡5601-1: DO = ON when OD > 97 %
DO Alarm status¡5701-1: DO = ON when a Alarm is detected
Display mP SW ver. ¡580100-Software version for display microprocessor
Motor mP SW ver. ¡590100-Software version for motor microprocessor
MinMaxUnit Comments
If ¡02 = 2, one digit is shown.
0 : DI1 = OFF
1 : DI1 = ON
If ¡02 = 3, two digits are shown.
00 : DI1 = OFF, DI2 = OFF
10 : DI1 = ON, DI2 = OFF
01 : DI1 = OFF, DI2 = ON
11 : DI1 = ON, DI2 = ON
0: DO = OFF
0: DO = OFF
0: DO = OFF
Reset to factory setting :
1. Remove the power supply.
2. Activate down arrow and up arrow push buttons
at the same time.
3. Connect the power supply.
ICAD protection capFor all outdoor applications or where extra
protection of the display and keyboard is needed,
Danfoss recommends using the ICAD protection
cap.
The protection cap will give the ICAD display and
keyboard an extra protection against e.g. sun
radiation or other impacts from the surrounding
environment. Furthermore it protects the cable
connectors against inappropriate loads.
4. Release down arrow and up arrow push buttons.
5. When the display on ICAD is alternating between
showing: CA and A1 the factory resetting is
complete.
The special designed protection cap can be
mounted on all ICAD 600A / 1200A.
The installation of the protection cap is done by
sliding the protection cap down on the top of the
ICAD. To secure the protection cap, tie it to the
connector cables using the hole in the protection
cap.
• LED indication
– Green (Power ON)
– Yellow (Flashing:charging, Constant:
Buffer mode (Failsafe supply to ICAD))
– Red (Battery fully discharged / Battery faulty)
• 24 V DC supply → Same transformer as for
ICAD can be used. Only +0,5 A extra load on the
transformer.
• Check of battery every 60 sec.
In the event of power failure, there is a need to
make sure that the ICM goes to a safe position.
ICAD-UPS can be connected to the ICAD 600A /
1200A.
The solution ICM with ICAD connected to ICAD-UPS
will give one of the following possibilities in the
event of power failure:
– close ICM
– open ICM
– stay
– go to a specefic ICM Opening Degree
When power supply has been re-established
the system will automatically return to normal
operation.
• Adjustable buffer time*. (1, 2, 3, 5, 10, 15, 20, 30 or
infinity) = Ensures longer life time of the battery.
• Forced remote shutdown in buffer mode via
digital input.
• 3 digital volt free relay change over contacts for
signals to PLC systems. (Power OK, Buffer mode
(failsafe supply to ICAD), Alarm).
* Buffer time is defined as the period where ICAD is only
powered from the ICAD-UPS (i.e. not from main supply).
On ICAD-UPS there is an adjustable buffer time setting
(1, 2, 3, 5, 10, 15, 20, 30 min. or infinity). If set to 3, ICAD-UPS
will switch off power to connected ICAD 600A / 1200A,
3 minutes after the power failure occurs. This ensures that
the internal battery inside ICAD-UPS do not fully discharge.
Data sheet | Motor operated valves, type ICM and actuators type ICAD
ICM Application
Dry suction line
Wet suction line
ICM can be used for pressure and temperature
regulation in dry and wet suction lines, in hot
gas lines and in liquid lines with or without
phase change (i.e. where no expansion
occurs in the valve).
Liquid line without
phase change
Hot gas bypass or defrost line
Discharge line
Liquid line with
phase change
Valve capacities for different refrigerants and
applications are given in the following tables.
Selection of ICM / ICS valves will be available
with the DIRcalc selection program. The resultant
valve selections will be:- ICM-EXP for expansion
valve functions and where the selection
criteria has been predefined for expansion
valve application: ICM will be for control valve
functions and will include for all available
function modules as valve pressure drop is the
main consideration for valve selection.
The process for identifying the ICM valve
solution can be determined from the ordering
pages. Initially select the nominal valve size,
identify the required valve body and connection
types, followed by the module insert and then
the correct actuator to suit the module insert
and valve body.
As the ICM and ICS valves use a common
body it is possible to install the body without
having previously determined whether a
servo or motor function is required. A blank
top cover complete with fixing screws can be
supplied to allow for pressure testing.
In applications where the ICM is used to control
pressure / temperature at differing operating
conditions e.g. dual temperature store, the
ICM must be selected so that the full operating
conditions (minimum and maximum capacity /
summer and winter conditions) are within the
control range of the selected ICM valve.
It is particularly important to ensure that the
ICM valve selection is not oversized and as a
consequence operates at a minimum opening
degree, which can result in a hunting condition and
continuous recalibration of the ICM valve.
Note:
ICM valves should be sized to suit required capacity
and operating conditions. ICM valves should not be
line sized.
For ICM 20 – 65 applications it is recommended
that the valve opening degree at the minimum
operating conditions is greater than 5%.
For ICM 100 – 150 applications it is recommended
that the valve opening degree at the minimum
operating conditions is greater than 10%.
Note: It is common to select a valve with a least 15% additional capacity for superheat control and at least 25%
additional capacity for liquid level control applications.