onninen E2VCABS9I0 Electronic Expansion Valve Instruction Manual

onninen E2VCABS9I0 Electronic Expansion Valve

Electronic expansion valve

Positioning

Welding and handling

electrical connections

Integrated
E2VSTA031| Unipolar Stator with cable from 1 m| 67| Integrated
E2VSTA032| Unipolar Stator with cable from 2 m| 67| Integrated
E2VSTAS22| Bipolar hermetic IP69 with cable from 2 m| BIPOLAR| 6K9K| Integrated
E2VSTAS23| Bipolar hermetic IP69 with cable from 0,3 m

and Superseal connector IP67

|  | 6K9K| E2VCAB*I

Dimensions in mm (inch)

(4,67 inch)

| 63.7 mm

(2,51 inch)

| 40,7 mm

(1.60 inch)

| 39 mm

(1,54 inch)

| 12 mm

(0,47 inch)

E2VZWF – rame / copper 1/2”-1/2”| 118,5 mm

(4,67 inch)

| 63.7 mm

(2,51 inch)

| 40,7 mm

(1.60 inch)

| 39 mm

(1,54 inch)

| 12,7 mm

(1,2”)

E2VZSM- rame / copper 16-16 mm| 118,5 mm

(4,67 inch)

| 63.7 mm

(2,51 inch)

| 40,7 mm

(1.60 inch)

| 39 mm

(1,54 inch)

| 16 mm

(5/8 inch)

contents of the packaging

The packaging of the Carel E2V-Z valve contains the following components:

1. n. 1 cartridge with kinematic mechanism and movement (control rod);
2. n. 1 body with fittings to be welded to the circuit pipework;
3. n. 1 Teflon-gaskets for seal seat between the body and the cartridge;
4. n. 1 ferrule;
5. n. 1 with sight glass with n. 1 OR (optional);
6. n. 1 filter.
7. n. 1 oring 108

DISPOSAL OF THE PRODUCT

The appliance (or the product) must be disposed of separately in accordance with the local waste disposal legislation in force.

IMPORTANT WARNING

The CAREL product is a state-of-the-art product, whose operation is specified in the technical documentation supplied with the product or can be downloaded, even prior to purchase, from the website www.carel.com. The client (builder, developer or installer of the final equipment) assumes every responsibility and risk relating to the phase of configuration the product in order to reach the expected results in relation to the specific final installation and/or equipment. The lack of such phase of study, which is requested/indicated in the user manual, can cause the final product to malfunction of which CAREL can not be held responsible. The final client must use the product only in the manner described in the documentation related to the product itself. The liability of CAREL in relation to its own product is regulated by CAREL’s general contract conditions edited on the website www.carel.com and/or by specific agreements with clients.

Carefully read these instructions to avoid damage to objects or people. For more information, read the “EEV systems operating manual (code +030220811) before installing this product. The manual is available in the “documentation” download area at www.carel.com.

General Features
The E2V-Z electronic valve is designed for installation in refrigerant circuits as the refrigerant expansion device, using the superheat calculated by a pressure and temperature probe located at the evaporator outlet as the control signal. The inlet fluid should be suitably subcooled to prevent the valve from operating with flash gas. Valve noise may increase when refrigerant charge is insufficient or there is significant pressure drop downstream of the valve. Only CAREL instruments should be used for the control of the E2V-Z. Do not use the E2V-Z valves outside of the normal operating conditions, shown below.

Positioning
The E2V-Z valves are double-acting. Use the side connection as the preferential inlet for the liquid (Fig. 1), as this helps the valve remain closed in the event of power failures, due to the pressure that pushes the disc into the seat. If using shutoff valves before the expansion valve, the circuit must be set up so that no fluid hammer is created near the valve. The shutoff valve and expansion valve must never be closed at the same time, to avoid dangerous excess pressure in the circuit. Always install a mechanical filter upstream of the refrigerant inlet. The valve can be oriented in any direction, with the exception that the stator must not be pointed downwards (valve upside down) . The recommended position for the E2V-Z valve is the same as for traditional thermostatic valves, that is, upstream of the evaporator and any distributors. The temperature and pressure sensors (not supplied with the E2V-Z) must be positioned immediately downstream of the evaporator, making sure that:

• the temperature sensor is installed using conductive paste and is adequately thermally insulated from the outside;
• both the sensors are installed BEFORE any devices that vary the pressure (e.g. valves) and/or temperature (e.g. exchangers).

Welding and handling
The E2V-Z valves must be joined to the circuit by braze welding the copper fittings to the condenser outlet (IN) and evaporator inlet (OUT) pipes. Proceed as indicated in
Fig. 2:

1. take the body of the valve from the packaging.

2. Insert the pipes in the female valve fittings, being careful not to go beyond the specific restrictions present in the joints of the valve. Weld by aiming the flame at the ends of the fittings as shown in Fig. 2-A (for better braze welding without affecting the seal of the welded area between the body and the fittings, use alloys with a fusion temperature less than 650 °C or with a silver content above 25%);

3. Take the cartridge.

4. Make sure that the PTFE and l’oring are present and positioned in their site (Fig. 2-B).

5. Make sure that the metal mesh filter is inserted on the brass bushing (Fig.2-B). Otherwise, position it as shown in the figure and make sure it’s properly in place.
   Warning! The filter is efficacious with fluid inlet from the connection side. If using the valve in the opposite direction, install a special filter in the circuit, removing the one supplied.

6. It is necessary to lubricate with oil (any of those normally used in refrigerant circuits) the outer surface of the cartridge oring (Fig. 2-B)

7. Insert the cartridge inside the braided body, taking care not to force it during insertion (Fig 2-C).

8. Proceed to manually screw the brass nut until it reaches its limit (Fig. 2-D).

9. Tighten the nut on the valve body with a 24-inch fork wrench with a tightening torque of 45Nm (Fig. 2-E). It is possible to change the valve size only by replacing the existing cartridge with a different size (without changing the valve body).

10. Insert the red stator, not included (see table “Electrical connections”), on the cartridge with the black nut screwed on tightly until deforming the rubber ring on the stator (tightening torque 0.3 Nm) (Fig. 2-E).

11. Connect the motor to the driver via a compatible cable if not already integrated in the motor itself. (See Tab. “Electrical connections”)

Carel guarantees the correct operation of the Carel ExV system, if driven by Carel drivers only. The use of the Carel ExVs system with other manufacturer’s drivers, if not expressely agreed with Carel, will automatically void the warranty.

Important: CAREL valves are supplied in the fully open position. If the valve is activated before being welded to the circuit, it must be returned to the fully open position to prevent high temperatures from damaging the internal components.

Note

• Do not twist or strain the valve or the connection pipes.
• Do not strike the valve with hammers or other objects.
• Do not use pliers or other tools that may deform the external structure or damage the internal parts.
• Never point the flame at the valve.
• Never bring the valve near magnets or magnetic fields.
• Do not install or use the valve in the event of: deformation or damage to the external structure; heavy impact, for example due to dropping; damage to the electrical parts (stator, contact carrier, connector,…).
• CAREL does not guarantee the operation of the valve in the event of deformation of the external structure or damage to the electrical parts.
• The presence of dirt particles may cause valve malfunctions.
• After than any disassembly of cartridge and/or flow indicator, replace the o-rings with original Carel spare parts.

Electrical connections

If it is not present, connect a compatible cable to the motor. If it is a bipolar motor with integrated cable, use E2VCAB*: mapping is 1 Green, 2 Jellow, 3 Brown, 4 White. Important: phase 4 is indicated on the valve stator by the earth symbol. Optional shielded cables are available (E2VCABS) for applications in accordance with directive 2004/108/EC and subsequent amendments.

Operating specifications CAREL E2V-Z Compatibility

Unipolar Stator – 26 bar (377 psi) only for E2V35Z**** with Unipolar Stator
P.E.D.| Groups 1 and 2, Art. 4, par. 3 – These products comply with the requirements of IEC 60079-15 ed. 4 as required by EN 60335-2-24: 2010 (cl. 22.109, 22.110, Annex CC), EN 60335-2-40 / A1:2006

(cl. 22.116, 22.117) and EN 60335-2-89: 2010 (cl. 22.107, 22.108, 22.109, Annex BB) when

flammable refrigerant gases are used. An equivalent failure hole of 0.25 mm2 according to CEI 31-35 (cl. GB 3.1) is considered for risk analysis.

UL/CSA certification (UL 429 e CSA C22.2 no.139-2010 standard of Electrically Operated Valves):| UL file No. E304579 only for A1 class refrigerant
Refrigerant temperature| -40T70°C(-40T158°F)
Room temperature| -30T70°C(-22T158°F)
Full closing steps| 500
regulation steps| 480

References

• CAREL
• CAREL

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