R744 compressors transcritical application

All connections to the pipes are made of steel.

As standard, the compressors are equipped with a blind flange. If a valve is required, this must be specified when ordering - preferably stating the compressor model and the valve designation in the following tables.

R744 is an odourless and colourless gas and cannot be perceived directly in case of emission!

R744 is an odourless and colourless gas and cannot be perceived directly in case of emission!

Lost of consciousness and danger of suffocation by inhaling higher concentrations!

Avoid R744 emission and uncontrolled deflating, particularly in closed rooms!

Aerate closed machine rooms!

Make sure that the safety regulations in accordance with EN378 are complied with!

Liquid R744 evaporates quickly, cools down at the same time and forms dry ice!
danger

Liquid R744 evaporates quickly, cools down at the same time and forms dry ice!

Danger of cold burns and frost bites!

Avoid uncontrolled deflating of R744!

When filling the system with R744, wear gloves and goggles!

In addition to the safety references listed in this document, it is essential to observe the references and residual risks in the respective operating instructions!

High pressure side

Shut-off valves for R744 compressors, transcritical application, high pressure side / discharge gas side
*: Varispeed compressors 4PTE-7.F3, 4MTE-10.F4 and 4KTE-10.F4
Ø: diameter

Compressor

2MTE .. 2KTE

4PTE(U)
4MTE(U)(M) .. 4KTE(U)(M)

4PTE-7.F3 .. 4KTE-10.F4*

4JTE(U)(M) .. 4CTE(U)(M)

6FTE(U)(M) .. 6CTE(U)(M)

8FTE .. 8CTC

Connection at compressor

1/4''-18 NPTF

1/4''-18 NPTF

1/4''-18 NPTF

1/4''-18 NPTF

1/4''-18 NPTF

1/4''-18 NPTF

Standard blind flanges

367 126 03 (DN18, 4 holes)

X

X

X

X

367 126 08 (4 holes)

X

367 126 10 (DN40, 4 holes)

X

Optional valves

Ø of suitable brazing pipes

Ø of suitable welding pipes

Maintenance connections

Di10/Da14

X

X

X

3/8'' // 10 mm

13.5 mm (DN8)

1 top

Di16/Da22/TX

X

X

X

X

5/8'' // 16 mm

21.3 mm (DN15)

1 top

Di16/Da22/TT

X

X

X

5/8'' // 16 mm

21.3 mm (DN15)

2 top

Di18/Klemm

X

X

X

X

–

–

1 top

Di19/Da25/TX

X

X

X

X

3/4''

21.3 mm (DN15)

1 top

Di19/Da25/TT

X

X

X

X

3/4''

21.3 mm (DN15)

2 top

Di22/Da30/TX

X

X

X

X

7/8'' // 22 mm

26.9 mm (DN20)

1 top

Di22/Da30/TT

X

X

X

7/8'' // 22 mm

26.9 mm (DN20)

2 top

Di28/Da35/TT

X

1 1/8''

33.7 mm (DN25)

2 top

Di28/Da35/TX

X

1 1/8''

33.7 mm (DN25)

1 top

Di28/DaKlemm

X

–

–

1 top

Di35/Da42

X

1 3/8'' // 35 mm

42.4 mm (DN32)

1 top

Low pressure side

Shut-off valves for R744 compressors, transcritical application, low pressure side / suction side
*: applicable also for the Varispeed compressors 4PTE-7.F3, 4MTE-10.F4 and 4KTE-10.F4
Ø: diameter

Compressor

2MTE .. 2KTE

4PTE(U)
4MTE(U)(M) .. 4KTE(U)(M)*

4JTE(U)(M) .. 4CTE(U)(M)

6FTE(U)(M) .. 6CTE(U)(M)

8FTE .. 8CTC

Connection at compressor

1/4''-18 NPTF

1/4''-18 NPTF

1/8''-27 NPTF

1/8''-27 NPTF

1/2''-20 UNF

Standard blind flanges

367 017 01 (2 holes)

X

367 015 01 (2 holes)

X

X

367 126 09 (4 holes)

X

367 127 01 (DN50, 4 holes)

X

Optional valves

Ø of suitable brazing pipes

Ø of suitable welding pipes

Maintenance connections

Di16/Da22

X

5/8'' // 16 mm

21.3 mm (DN15)

1 top

Di22/Da30/LA42

X

7/8'' // 22 mm

26.9 mm (DN20)

1 top

Di22/Da30/LA66

X

7/8'' // 22 mm

26.9 mm (DN20)

1 top

Di28/Da35

X

1 1/8''

33.7 mm (DN25)

1 top

Di35/Da42

X

1 3/8'' // 35 mm

42.4 mm (DN32)

1 top

Di54/Da60

X

2 1/8'' .. 54 mm

60.3 mm (DN50)

1 top

Nominal diameters (DN) are not actual dimensions!

Nominal diameters (DN) are not actual dimensions!

The nominal diameters DN10 .. DN200 only indicate ranges! The number is not a quantifiable unit, it is only indirectly related to the diameters of the connections and should not be used in calculations.