Data Sheet
Electric expansion valve
Type ETS 5M
For liquid injection into evaporators
ETS 5M is a compact and lightweight stepper motor driven electric expansion valve with a high level of reliability, and it provides a precise solution for expansion and €ow control in a wide range of refrigeration and air conditioning systems.
The portfolio is available with a wide capacity range and is designed for use with €uorinated refrigerants.
ETS 5M can be applied for applications i.e VRF, IT cooling, Heatpump, Mini Chiller, Bus / Transport application in single/bi€ow operation.
Valve operation is by means of a uni-polar motor, and as such it is compatible with a number of electronic controllers from Danfoss or third-party vendors. With an EKE1 series/EIM 336 superheat controlleres and AKS sensor, a superheat accuracy better than ± 0.5 K can be obtained.
Features
• Low €ow noise and operation noise.
• Optimized valve €ow characteristic.
• Accurate valve control, also at low opening degrees.
• Bi-€ow, with full performance in both €ow directions.
• Higher degree of freedom of installation orientation.
• Future-proof regarding refrigerants.
• Compatible with existing valve drivers.
• Largest nominal capacity, R410A : 20.6 kW, 5.8 TR.
AI357347789371en-000202
Electric expansion valve, Type ETS 5M
Portfolio overview
ETS 5M is a system product whose function is controlled through a Danfoss electronic controller, or a third party vendor electronic controller that is compatible with the ETS 5M as to control functionality and connections.
Danfoss recommends the use of the EKE1 series / EIM 336 superheat controller together with ETS 5M. (See separate data sheet on EIM 336 for details). with EKE1 series / EIM 336 or similar Danfoss electronic controllers, a superheat accuracy better than 0.5 K can be obtained.
The electronic controller requires precise temperature input from a temperature sensor (refrigerant temperature) and precise pressure inputs (evaporator pressure) from a pressure transmitter.
System product
Table 1: Electronic controllers for ETS 5M
EIM 336 Superheat controller |
EKE 1 series superheat controllers (EKE 1B is shown) |
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EIM 336 is designed as a controller on a pcb, i.e. must be built into a suitable |
EKE superheat controllers are for DIN rail mounting, and comes in three versions |
cabinet before use. |
with different combinations of inputs and output relays and different |
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functionality. |
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Table 2: Sensors and other products for ETS 5M
Pressure transmitter (DST P110 shown) |
EKF 1A/2A Stepper Valve Driver |
EKE 2U Backup power module |
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DST P110 is a digital ratiometric pressure transmitter. |
EKF series is an economical stepper valve driver that |
EKE 2U Backup power module ensures sufficient |
Depending on controller type, other ratiometric |
translates analog signal provided by master controller |
power in case of power failures to the controller |
pressure transmitters can be used as |
to valve driving sequence . |
to ensure closure of the electronic valves. |
well (e.g. AKS 32R). |
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© Danfoss | Climate Solutions | 2021.05 |
AI357347789371en-000202 | 2 |
Electric expansion valve, Type ETS 5M
Applications
Figure 1: Typical application of ETS 5M
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AI357347789371en-000202 | 3 |
Electric expansion valve, Type ETS 5M
Media
ETS 5M is designed for use with €uorinated refrigerants with suitable lubricants.
Table 3: ETS 5M media data
Media data |
Value |
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Refrigerants |
R410A, R32 R290, R22, R454C, R515B, R1234ze, R452B, R1234yf, R452A, R454B, R454A, R455A, R449A, R407C, |
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R134a, R407H, R513A, R449B, R404A, R448A, R463A |
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Refrigerants oil |
POE, MO |
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NOTE:
For €ammable refrigerants (R454C, R454A, R1234ze, R290, R32, R452B, R454B, R455A, R1234yf):
•This product is validated in accordance to ATEX, EN 378, ISO 5149, ASHRAE 15, IEC 60335-2-x or equivalent standards.
•Ignition risk is evaluated in accordance to ISO 5149 and IEC 60335.
•See safety note below.
NOTE:
•The product can be applied on systems with R454C, R454A, R1234ze, R290, R32, R452B, R454B, R455A, R1234yf as the working €uid.
•For countries where safety standards are not an indispensable part of the safety system Danfoss recommend the installer to get a third party approval of the system containing €ammable refrigerant.
•Note, please follow speci†c selection criteria stated in the datasheet for these particular refrigerants.
•The valve must only be used in closed circuit refrigeration system, where no oxygen is present acc. EN 378, ISO 5149 ASHRAE 15 or IEC 60335-2-x or equivalent standards.
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AI357347789371en-000202 | 4 |
Electric expansion valve, Type ETS 5M
Product specification
Design
The ETS 5M Electric expansion valves open and close to regulate refrigerant €ow by means of a screw, whose rotating motion is transformed into linear motion. This occurs by the rotation of a magnetneedle valve assembly which moves when electrical signals are applied to the surrounding coil. Within the coil structure, there are different winding con†gurations, and the polarities are changed by the electrical signals applied.
By application of the appropriate combination of signals, in the form of pulses, the coil forces the rotor of the valve to move in a stepwise fashion. Application of multiple pulses will make the valve mechanism move through a series of steps in the chosen direction, in order to set the valve with the required opening degree.
Pressure and temperature data
Table 4: Pressure and temperature data in SI and Imperial units
Data |
Value [SI units] |
Value [IMP. units] |
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Max working pressure (MWP) |
45.5 barg |
660 psig |
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Burst pressure |
5 x MWP |
5 x MWP |
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Maximum operating pressure differential (MOPD)(1) |
A→B 35 barg |
A→B 508 Psig |
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B→A 35 barg |
B→A 508 Psig |
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Ambient temperature |
-10 - 60 °C |
-14 - 140 °F |
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Ambient relative humidity |
Max. 95 % RH |
Max. 95 % RH |
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Fluid temperature range, normal €ow A→B(1) |
-8 - 70 deg C (on valve inlet) |
18 - 158 deg F (on valve inlet) |
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-30 - 28 deg C (on valve outlet) |
-22 - 82 deg F (on valve outlet) |
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Fluid temperature range, reverse €ow B→A(1) |
20 - 50 deg C (on valve inlet and outlet) |
68 - 122 deg F (on valve inlet and outlet) |
(1)A = Valve inlet B = Valve outlet
Enviromental conditions
Table 5: Enviromental conditions
Environmental conditions |
Value |
Max. Internal leakage @10 bar, A-> B and B->A(1) |
< 150 cm3/min |
Mechanical noise |
< 60 dB(A) |
Enclosure rating IP (Valve and coil combined) |
IP 66 |
Insulation class |
B |
Insulation resistance |
>100 MΏ |
Storage temperature range [°C] |
-30 - 70 °C / -22 - 158 °F |
Relative humidity |
Max. 95 % RH |
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(1)A = Valve inlet B = Valve outlet
Flow characteristics
Air €ow characteristics are provided for ETS 5M20 with normal and reverse €ows.
© Danfoss | Climate Solutions | 2021.05 |
AI357347789371en-000202 | 5 |
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