Danfoss EVR 2, EVR 3, EVR 6, EVRH 10, EVRH 15 Data sheet

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Data sheet

Solenoid valve for R410A and R744 Types EVR 2 - EVR 6 and EVRH 10 - EVRH 40

EVRH high pressure range is a direct or servo operated solenoid valve specially designed to meet the requirements for high pressure refrigerants as R410A and R744. The EVRH valve can be used for liquid, suction and hot gas lines.

Features

Approvals

y Normally closed

y Wide choice of coils for AC and DC voltage

y Suitable for R410A and R744

y Designed for media temperatures up to 105 °C

y Design pressure 45.2 barg

Low Voltage Directive (LVD) 2006/95/EC

Versions with UL approval can be supplied on request

y MOPD up to 38 bar (550 psi) with 20 W coil

y Solder connection up to 1 5/8 in.

y Extended ends for soldering

y It is not necessary to dismantle the valve

during soldering.

DKRCC.PD.B00.B9.02 | 1

Data sheet | Solenoid valve for R410A and R744, Types EVR 2 - EVR6 and EVRH 10 - EVRH 40

Technical data

Temperature of medium

-40 – 105 °C for 10 or 12 W coil Max. 130 °C during defrost

-40 – 80 °C for 20 W coil

Opening diﬀerential pressure with standard coil ∆p [bar]

Typ e

Min. 10 W AC 12 W AC 20 W AC 20 W DC

Max. (MOPD) liquid

Refrigerant

R744, R22/R407C, R404A/R507, R410A, R134a, R407A, R23. For other refrigerants, please contact Danfoss.

Note: EVR 2-3 and EVRH 25-40 are not suitable for R744 applications with media temperatures constantly below 0 °C. For other media temperatures, please contact Danfoss.

Max. working

Kv value

[m3/h]

pressure Ps

[barg]

EVR 2 0.0 25 25 38 18 0.16 45.2

EVR 3 0.0 21 25 38 18 0.27 45.2

EVR 6 0.05 21 25 38 18 0.8 45.2

EVRH 10 0.05 21 25 38 18 1.9 45.2

EV RH 15 0.05 21 25 38 18 2.6 45.2

EVRH 20 (AC) 0.05 21 25 38 — 5.0 45.2

EVRH 20 (DC) 0.05 — — — 16 5.0 45. 2

EVRH 25 0.2 21 25 40 18 10. 0 45.2

EVRH 32 0.2 21 25 40 18 16. 0 45.2

EVRH 40 0.2 21 25 40 18 25.0 45.2

The Kv value is the water ﬂow in [m3/h] at a pressure drop across the valve of 1 bar ρ = 1000 kg/m3.

MOPD (Max. Opening Pressure Diﬀerential) for media in gas form is approx. 1 bar greater.

Ordering

Ambient temperature and enclosure for coil: see separate brochure “coils for solenoid valve”.

Solenoid valve – Normally closed (NC) – Soldering ODF without manual stem – without coil

Typ e Coil type

EVR 2

Connection size

[in.]

AC / DC

EVR 3

AC / DC

EVR 6

AC / DC

EVRH 10

AC / DC

EV RH 15 AC / DC

EVRH 20 AC

EVRH 20 DC

EVRH 25 AC / DC 1 1/

EVRH 32 AC / DC

EVRH 40

With manual stem

AC / DC 1 5/

—

Connection size

[mm]

—

6 032F120 2

—

6 032F1207

10 032F120 8

—

10 032F1213

12 032 F12 36

—

12 032G1055

16 032G1056

22 032G1057

22 032G1058

—

35 032G10 81

—

Code no.

032F1201

032F120 6

032F120 4

032F120 9

032F1212

032G105 4

032G1059

032G1062

DKRCC.PD.B00.B9.02 | 2

Data sheet | Solenoid valve for R410A and R744, Types EVR 2 - EVR6 and EVRH 10 - EVRH 40

Capacity R410A

Capacities are based on: Liquid temperature tl = 25 °C ahead of the valve Evaporating temperature te = -10 °C Superheat 0 K

Liquid capacity Qc [kW]

Typ e

0.1 0.2 0.3 0.4 0.5

Liquid capacity Qc at pressure drop across valve ∆p [bar]

R410A

EVR 2 2.58 3.64 4.46 5.15 5.76

EVR 3 4.35 6.15 7.53 8.69 9.72

EVR 6 12. 88 18. 21 22.30 25.76 28.80

EVRH 10 30.58 43.25 52.97 61.17 68.39

EV RH 15 41.85 59 .19 72.49 83.70 93.58

EVRH 20

EVRH 25 160.97 2 27. 6 4 278.81 321.94 359.94

EVRH 32 2 57.55 364.23 446.09 515.10 575.90

EVRH 40 402.42 5 69 .11 69 7.02 804.85 899.85

Correction factors

When sizing valves, the plant capacity must be multiplied by a correction factor depending on liquid temperature tl ahead of the valve / evaporator.

80.48 113 . 82 139.4 0 160.97 17 9.9 7

When the corrected capacity is known, the selection can be made from the table.

Correction factors for liquid temperature t

tf [°C] -10 0 10 15 20 25 30 35 40 45 50

R410A 0.73 0.79 0.86 0.9 0.95 1 1.06 1.14 1.23 1.33 1.47

DKRCC.PD.B00.B9.02 | 3

Data sheet | Solenoid valve for R410A and R744, Types EVR 2 - EVR6 and EVRH 10 - EVRH 40

Capacity R410A

(continued)

Capacities are based on liquid temperature tl = 25 °C ahead of evaporator. The table values refer to the evaporator capacity and are given as a function of evaporating temperature te and pressure drop ∆p across the valve. Capacities are based on dry, satuated vapour ahead of the valve. During operation with superheated vapour ahead of the valve, the capacities are reduced by 4% for each 10 K superheat.

Suction vapour capacity Q

Typ e

Pressure

drop

∆ [bar]

R410A

0.07 0 .16 0.20 0.25 0.31 0.37 0.44

EVR 2

EVR 3

EVR 6

EVRH 10

EV RH 15

EVRH 20

EVRH 25

EVRH 32

EVRH 40

0.15 0.23 0.29 0.36 0.45 0.54 0.64

0.20 0.26 0.33 0.42 0.51 0.62 0 .74

0.07 0.27 0.34 0.42 0.52 0.63 0.75

0.15 0.38 0.49 0.61 0.75 0.91 1. 09

0.20 0.43 0.56 0.70 0. 87 1.05 1.25

0.07 0.79 1.01 1.26 1.54 1. 86 2.21

0.15 1.13 1. 45 1.82 2.24 2.70 3.22

0.20 1.28 1.66 2.09 2.57 3.11 3.71

0.07 1.88 2.40 2.99 3.66 4. 41 5.25

0.15 2.68 3.45 4.32 5.31 6.42 7.6 5

0.20 3.03 3.94 4.96 6.10 7. 39 8.81

0.07 2.57 3.28 4.09 5.01 6.03 7.18

0.15 3.66 4.72 5.92 7.27 8.78 10.47

0.20 4.15 5.38 6.78 8.35 10.11 12. 06

0.07 4.95 6 .31 7.87 9.63 11. 6 0 13. 80

0.15 7.0 4 9.07 11. 38 13.9 8 16.8 9 20.13

0.20 7.9 8 10 .36 13. 04 16.06 19.43 23.18

0.07 9.90 12. 63 15.74 19.26 23. 21 2 7. 61

0.15 14.0 8 18.15 22.76 2 7.96 33.78 40.25

0.20 15 .95 20.71 26.08 32 .12 38 .87 46. 37

0.07 15.85 20.20 25.18 30.81 37.13 44.17

0.15 22.53 29.04 36.42 44.74 54.05 64.41

0.20 25.52 33.14 41.74 51.40 62.19 74.19

0.07 24.76 31.56 39.34 48 .14 58 .01 69.02

0.15 35.20 45.37 56.90 69.90 84.45 100.64

0.20 39.88 51.78 65. 21 80.31 9 7.17 115. 92

Suction vapour capacity Qc [kW] at evaporating temperature te [°C]

-40 -30 -20 -10 0 10

Correction factors

When sizing valves, the evaporator capacity must be multiplied by a correction factor

When the corrected capacity is known,

the selection can be made from the table. depending on liquid temperature tl ahead of expansion valve.

Correction factors

tf [°C] -10 0 10 15 20 25 30 35 40 45 50

R410A 0.76 0.80 0.89 0.92 0.96 1.0 1.05 1.11 1.18 1. 26 1.37

DKRCC.PD.B00.B9.02 | 4

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