Danfoss Electronics KVC Data Sheet

Data sheet

Hot gas bypass regulator Type KVC

KVC is a hot gas bypass regulator applied for the adaption of the compressor capacity to the actual evaporator load. Placed in a bypass between high and low pressure sides of the refrigeration system, KVC imposes a lower limit on the compressor suction pressure by supplying the low pressure side with replacement capacity in the form of hot gas / cool gas from the high pressure side.

Features • Accurate, adjustable pressure regulation

• Wide capacity and operating ranges

• Pulsation damping design

• Stainless steel bellows

• Compact angle design for easy installation

• “Hermetic” brazed construction

• Available with ﬂare and ODF solder connections

• May be used in the following EX range: Category 3 (Zone 2)

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Data sheet | Hot gas bypass regulator, type KVC

Approvals

Technical data

Ordering

UL LISTED, ﬁle SA7200 EAC

Refrigerants

Regulating range

Maximum working pressure PS / MWP = 28 bar

Maximum test pressure Pe = 31 bar

Medium temperature range -45 – 130 °C

Maximum P-band 2.0 bar

Kv value at maximum P-band 1)

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

This product is evaluated for R290, R600, R600a, R1270 by ignition source assessment in accordance with standard EN13463-1.

R22, R1270, R134a, R290, R404A, R407A, R407C, R407F, R448A, R449A, R450A, R452A, R507A, R513A, R600, R600a

0.2 – 6.0 bar

Factory setting = 2 bar

KVC 12 = 0.68 m3 / h

KVC 15 = 1.25 m3 / h

KVC 20 = 1.85 m3 / h

For complete list of approved refrigerants, visit www.products.danfoss.com and search for individual code numbers, where refrigerants are listed as part of technical data.

Rated capacity 1)

Type

KVC 12

KVC 15 14.9 9.4 13.6 16.45⁄8 16 034L0142

KVC 22 19.1 12.0 17.4 21.0 – – –

) Rated capacity is the regulator capacity at:

- evaporating temperature te = -10 °C,

- condensing temperature tc = 25 °C,

- oﬀset = 0.7 bar.

) KVC is supplied without ﬂare nut. Separate ﬂare nuts can be ordered: 1⁄2 in. / 12 mm, code no. 011L1103, 5⁄8 in. / 16 mm, code no. 011L1167.

R22 R134a

7.6 4.8 6.9 8.4

7.6 4.8 6.9 8.4 – – – – 12 034L0146

[kW]

R404A/

R507

R407C [in.] [mm] [in.] [mm]

Flare

connection 2)

⁄2 12 034L0141

Code no.

Solder

connection

⁄2 – 034L0143

⁄8 16 034L0147

⁄8 22 034L0144

Code no.

REACH requirements

The connection dimensions chosen must not be too small, since gas velocities in excess of 40 m/s at the inlet of the regulator can give ﬂow noise.

All Danfoss products fulﬁll the requirements in REACH.

If the discharge tube temperature becomes too high in relation to the compressor speciﬁcation, the installation of an injection valve in a bypass between liquid line and compressor suction line is recommended.

One of the obligations in REACH is to inform customers about presence of Candidate list substances if any, we hereby inform you about one substance on the candidate list: an O-ring used in this product contains Diisopentyl phthalate (CAS no: 605-50-5) in a concentration above 0.1% w/w.

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Data sheet | Hot gas bypass regulator, type KVC

Replacement capacity

R22

Type

KVC 12

KVC 15

KVC 22

) The capacities are based on:

- condensing temperature tl = 25 °C.

Oﬀset ∆p Q 1) [kW] suction gas temperature ts after pressure / temperature reduction [°C]

[bar] -45 -40 -30 -20 -10 0 10

0.10 – 2.3 2.4 2.5 2.5 2.6 2.6

0.15 – 3.5 3.6 3.7 3.8 3.9 4.0

0.20 – 4.5 4.7 4.8 4.9 5.0 5.1

0.30 – 5.9 6.1 6.3 6.4 6.5 6.7

0.50 – 6.6 6.8 7.1 7.2 7.3 7.5

0.70 – 7.0 7.2 7.4 7.6 7.8 7.9

1.00 – 7.6 7.9 8.1 8.3 8.5 8.6

1.20 – 8.2 8.5 8.7 8.9 9.1 9.3

0.10 – 3.5 3.6 3.7 3.8 3.9 4.0

0.15 – 4.5 4.7 4.8 4.9 5.0 5.1

0.20 – 5.9 6.1 6.3 6.4 6.5 6.7

0.30 – 8.2 8.5 8.7 8.9 9.1 9.3

0.50 – 11.7 12.1 12.4 12.7 13.0 13.2

0.70 – 13.7 14.2 14.6 14.9 15.2 15.5

1.00 – 15.6 16.2 16.7 17.0 17.3 17.7

1.20 – 16.8 17.4 17.9 18.3 18.7 19.0

0.10 – 3.7 3.8 3.9 4.0 4.1 4.2

0.15 – 5.1 5.2 5.4 5.5 5.6 5.7

0.20 – 6.8 7.0 7.3 7.4 7.5 7.7

0.30 – 8.4 8.6 8.9 9.1 9.3 9.5

0.50 – 14.1 14.5 15.0 15.3 15.6 15.9

0.70 – 17.6 18.1 18.7 19.1 19.5 19.9

1.00 – 21.4 22.4 23.1 23.6 24.1 24.5

1.20 – 23.8 24.6 25.4 25.9 26.4 26.9

Correction factors

When selecting, the required regulator capacity is to be multiplied by a correction factor dependent on the condensing temperature.

System capacity × correction factor = table capacity

The corrected capacity can then be found from the table. Correction factors for condensing temperature can be found in section “selection”.

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