Danfoss ETS 8M Data sheet

Data Sheet

Electric expansion valve

Type ETS 8M

ETS 8M is a 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 system. The valve comes with two €ow curve options, a linear and a S-shaped characteristic.

ETS 8M can be applied for applications i.e.

Modular Chiller and Low Ambient Temp Heat

Pump in single/bi-€ow operations.

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.

Features:

• High MOPD to comply with compressor operating envelope

• Low internal leakage

• Long lifetime and durability

• Optimized valve €ow characteristic

• Stable €ow control at low opening degree

• Dedicated €ow control curve for heat pump

• Compatible with existing valve drivers

• Bi-€ow, with good performance in both €ow directions

• Flexible installation: vertical orientation ±90°C

• Coil enclosure up to IP67

• In accordance with ◦ JB/T 10212

◦ RoHS (China and EU) ◦ REACH

◦ PED

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Electric expansion valve, type ETS 8M

Portfolio overview

ETS 8M 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 8M as to control functionality and connections.

The electronic controller requires precise temperature input from a temperature sensor (refrigerant temperature) and precise pressure inputs (evaporator pressure) from a pressure transmitter.

Table 1: Portfolio overview

Features	ETS 8M	ETS 8M

Solder connection	Copper	Copper

Size [mm]	4.0 – 4.5	4.0 – 6.5

Connection size	ODM 3/8”	ODM 5/8”

Max. working pressure [bar]	49	49

Brazing connector con†guration	Angle way	Angle way

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Electric expansion valve, type ETS 8M

Application

Figure 1: Typical application of ETS 8M

Electronic

Controller

Electric Expansion

Valve

Evaporator

Pressure

Transmitter

Temperature

sensor

Danfoss

80Z927

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Electric expansion valve, type ETS 8M

Media

ETS 8M is designed for use with €uorinated refrigerants with suitable lubricants.

Table 2: ETS 8M media data

Refrigerants	R410A, R32, R407C, R290, R454B, R452B, R454C, R513A, R449B, R404A,R448A,
	R449A, R515B, R452A, R134a, R1234ze
Oil	POE, PVE

NOTE:

For €ammable refrigerants (R454C, R290, R32, R452B, R454B):

•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, R290, R32, R452B, R454B 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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Electric expansion valve, type ETS 8M

Product specification

Design

The ETS 8M 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 magnet needle valve assembly which moves when electrical signals are applied to the surrounding coil. Within the coil structure, there are diˆerent 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.

Flow direction

Figure 2: Flow direction

ETS 8M is designed for normal and reverse €ow direction, above image from B to A refers the normal €ow.

Pressure and temperature data

Table 3: Pressure and temperature data in SI and Imperial units

Data	Value [SI units]	Value [IMP. Units]
Max. working pressure (MWP)	49 barg	710 psig
Burst pressure	5 x MWP	5 x MWP
Max. operating pressure diˆerential (MOPD)	B->A, 39 barg	B->A, 565 psig
	A->B, 32 barg	A->B, 464 psig
Ambient temperature	-30 - 70 °C	-22 - 158 °F
Ambient relative humidity	Max 95%RH	Max 95%RH
Fluid temperature range	-30 - 70 °C	-22 - 158 °F

Environmental conditions

Table 4: Environmental conditions

Data	Value
Max. internal leakage @10 bar	< 800 cm3/min
Mechanical noise	Normal operating <60 dB(A) 15 cm away, Overdriving <70 dB(A) @ 15 cm away
Enclosure rating IP (Valve and coil combined)	IP67
Insulation class	Class B
Insulation resistance	>100MΩ
Storage temperature	-30°C to 60°C

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