Installation guide 
How to use solenoid valves
Making it easy to be efficient
ia.danfoss.com
How to use
solenoid valves
This booklet has been compiled to help in the installation of compact and high performance solenoid valves and in locating faults in systems with solenoid valves.
The compact range has small physical dimensions for control of flow where space is limited.
The high performance range is a sturdy and universal valve program for control of flow in industrial plants and within heating and sanitary systems.
Note that this booklet describes only brass solenoid valves. For other types, please contact Danfoss.
If you need help choosing a solenoid valve, visit the online valve selector at valveselector.danfoss.com
Flexible and user-friendly
Danfoss solenoid valve bodies and electrical coils are normally supplied separately and then combined together. They are assembled quickly and simply without any tools.
This provides optimum product flexibility and availability. If a coil needs replacement it can be done without stopping or draining any system.
The solenoid valves are also available as assembled units if required.
© Danfoss | DCS (RJA) | 2015.11 |
IC.PS.600.A8.02 |
Contents |
Identification.......................................................................................................... |
3 |
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Installation............................................................................................................... |
6 |
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How to choose.................................................................................................. |
13 |
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Valve overview................................................................................................... |
18 |
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Seal material........................................................................................................ |
22 |
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Coils.......................................................................................................................... |
23 |
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Opening and closing times....................................................................... |
25 |
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Fault location...................................................................................................... |
27 |
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Spare parts high performance range ...................................................... |
32 |
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Spare parts compact range....................................................................... |
41 |
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Tools......................................................................................................................... |
42 |
© Danfoss | DCS (RJA) | 2015.11 |
IC.PS.600.A8.02 | 1 |
Solenoid valves
Choosing the correct solenoid valve
Symbolise valves used in a closed circuit system, typically with low differential pressures.
Symbolise valves used in an open system.
Used typically for drinking water.
Differential pressure higher than 0.5 bar.
Symbolise valves used in a drain system.
Note ! For more details see How to choose on page 13
© Danfoss | DCS (RJA) | 2015.11 |
IC.PS.600.A8.02 | 2 |
Identification
Choosing the correct solenoid valve
Illustration 1
Option 1: Identification using silver label (←2011)
Illustration 1 shows the label with relevant information that is attached to the coil.
The example here is from an EV220B solenoid valve:
15:15 mm orifice
B:Brass body material
G 12: ISO 228/1, 1/2 inch connection
E: EPDM seal material
NC: Normally closed
If the the coil label cannot be read, the valve can be identified from the letter/number combination stamped in the valve body.
Example:
506U4042
Week 50 2006 
042U4042
The coil type (BQ024CS) is printed on the front of the coil as well as voltage (V) and frequency (Hz) - see illustration 2.
MADE IN DENMARK
Spare part no. 018F4517
Tambient |
-40T40 °C |
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24V |
60Hz |
8.5W |
14VA |
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24V |
50Hz |
10.5W |
16VA |
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F4507 |
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BQ024CS |
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Illustration 2
© Danfoss | DCS (RJA) | 2015.11 |
IC.PS.600.A8.02 | 3 |
Identification
Option 2 (2011 →)
Printing on armature tube replaces silver labels and date / code no. stamping for identification of the valve.
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Type Designation |
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EV220B |
= Valve type |
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15 |
= 15 mm orifice |
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B |
= Brass body material |
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G 12 |
= ISO 228/1, ½ inch connection |
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E |
= EPDM seal material |
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NC |
= Normally closed |
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667 |
= Options |
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BB230A |
= Coil |
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Production Time |
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380 |
= Week 38 2010 |
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032U711531 |
= Code Number |
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Note down following information
Valve code no: ______________
Sparepart no.: ______________
Plug
018Z0081 |
042N0156 |
© Danfoss | DCS (RJA) | 2015.11 |
IC.PS.600.A8.02 | 4 |
Identification
Valve identification problem
If above mentioned method is not possible, state the following when ordering Danfoss solenoid valves as replacements:
•Application (closed circuit, open system or drain application)?
•Function (Normally open or normally closed)?
•End connection?
•Medium (water, oil, air, etc.)?
•Kv value?
•Coil voltage?
•Alternating (AC) or direct current (DC)?
© Danfoss | DCS (RJA) | 2015.11 |
IC.PS.600.A8.02 | 5 |
Installation
Flow direction |
To be able to operate correctly, all solenoid valves must be |
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installed with the arrow cast on the body pointing in the |
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direction of flow. |
Water hammer
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Water hammer is a typical result of high liquid velocity (high pressure and high flow velocity through small pipe diameters).
There are several reasonable solutions to the problem:
1.Reduce the pressure by installing a pressure reduction valve ahead of the solenoid valve. If possible, increase the pipe diameter.
2.Damp the water hammer by installing a flexible hose or flexible buffer ahead of the solenoid valve.
3.Use a solenoid valve of the type EV220B 15 – EV220B 50. The equalizing orifice can be replaced by a version with smaller diameter. This gives a longer closing time (see “Spare parts” and “Opening and closing times”).
Equalizing orifice
© Danfoss | DCS (RJA) | 2015.11 |
IC.PS.600.A8.02 | 6 |
Installation
Pipe |
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The pipes on both sides of the valve must be securely |
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fastened. |
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Test pressure
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Tightening up
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When applying test pressure: All valves in the system must be open. There are three ways of doing this:
1.By applying voltage to the coil
2.By opening the valves manually(when the manual override accessory is fitted)
3.By connecting the Danfoss permanent magnet (see "Tools", page 42)
Note that the manual opening unit is not supplied as standard, but as an accessory for EV220B 15 – EV220B 50 valves (see page 33).
Remember to screw the opening unit back (CLOCKWISE) before starting up the system, otherwise the valve cannot close.
Always use counter-force when tightening up pipe connections, i.e. use a spanner on both the valve body as well as on the pipe connector (as shown).
© Danfoss | DCS (RJA) | 2015.11 |
IC.PS.600.A8.02 | 7 |
Installation
Dirt in the system |
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Always flush out piping before installing a solenoid valve. If |
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there is dirt in the medium, a filter should be installed ahead |
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of the valve. |
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© Danfoss | DCS (RJA) | 2015.11 |
IC.PS.600.A8.02 | 8 |
Installation
Installing the coil
Servo-operated and assisted lift servo-operated valves
Danfoss recommends that the solenoid valve be installed with coil upwards. This minimises the risk of dirt collecting in the armature tube.
If “clean” media is used, i.e. media containing no dirt particles, the solenoid valve will operate when installed in the orientation as shown below.
EV245B
EV251B
EV222B
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EV245B
EV251B
EV222B
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© Danfoss | DCS (RJA) | 2015.11 |
IC.PS.600.A8.02 | 9 |
Installation
Direct-operated valves
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EV310A |
EV210A |
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EV310A |
EV210A |
© Danfoss | DCS (RJA) | 2015.11 |
IC.PS.600.A8.02 | 10 |
Installation
Coil
MADE IN DENMARK
Spare part no. 018F4517
Tambient |
-40T40 °C |
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24V |
60Hz |
8.5W |
14VA |
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24V |
50Hz |
10.5W |
16VA |
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F4507 |
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BQ024CS |
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Check to ensure that the coil operating voltage is correct (see text on coil, in “Volt”). Also ensure that the data is correct (voltage and frequency) and matches the supply. If the two sets of data do not correspond, the coil might burn out.
As far as possible, always choose single-frequency coils; they give off less heat than double-frequency versions.
The coil has three pins. The middle pin is marked according to the illustration (left) and must be used for earthing.
The two other pins are coil terminals and either can be used for the phase or neutral supply. The terminals can be used respectively for phase and neutral as required.
Please note for high performance range!
When mounting the clip-on coil, simply press it gently onto the armature, until it clicks into place. An O-ring should be fitted over the armature tube before fitting the coil.
Cable entries must always be screwed in correctly.
Cable connection |
The cable must be installed as shown in the illustration to |
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avoid water running into the terminal box. |
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IC.PS.600.A8.02 | 11 |
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© Danfoss | DCS (RJA) | 2015.11 |
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Installation
Cable |
To avoid moisture penetrating in the terminal box, the whole |
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cable diameter must be secured in the entry. For this reason, |
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always use round cables as they are the only type that can be |
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effectively sealed. |
Note the colours on the cable leads. Yellow/green is always earth. The other leads should be for the phase and neutral supply.
Coil replacement |
Please note for clip-on coils: |
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When replacing a coil, use a screwdriver to lever it from the |
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armature. |
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Caution: Before removing a coil, voltage must be |
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disconnected, otherwise the coil will burn out. |
OFF
© Danfoss | DCS (RJA) | 2015.11 |
IC.PS.600.A8.02 | 12 |
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