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Data Sheet

Radiator thermostats for one-pipe and two-pipe systems

8

VD.51.Q1.

12 © Danfoss 10/2003

DKCD

Dimensions

*) Add 32mm to L7 to allow for sensor removal fitting
**) "UK"  indicates horizontal angle type valve body

Built-in sensor
on RA-FN or RA-G body

Built-in tamperproof sensor
on RA-FN or RA-G body

Built-in sensor
on RA-FN body, horizontal angle (UK)

Remote  sensor
on RA-FN or RA-G body

Remote temperature adjuster

DN

D

d

2

RA-FN 10

10

R

p

3

/

8

R

3

/

8

60

85

27

52

22

47

96

22

27

RA-FN 10 UK**

10

R

p

3

/

8

R

3

/

8

103

26

51

22

22

27

RA-FN 15

15

R

p

1

/

2

R

1

/

2

67

95

30

58

26

47

96

27

30

RA-FN 15 UK**

15

R

p

1

/

2

R

1

/

2

104

29

57

44

27

30

RA-FN 20

20

R

p

3

/

4

R

3

/

4

74

106

34

66

29

47

96

32

37

RA-FN 20 UK**

20

R

p

3

/

4

R

3

/

4

105

34

66

30

32

37

RA-FN 25

25

R

p

1

/

1

R

1

/

1

90

126

40

76

34

47

96

27

30

RA-G 15

15

R

p

1

/

2

R

1

/

2

68

96

30

58

27

50

99

27

30

RA-G 20

20

R

p

3

/

4

R

3

/

4

74

106

34

66

30

50

99

32

37

RA-G 25

25

R

p

1

/

1

R

1

/

1

90

126

42

78

34

54 103

41

46

L

1

L

2

L

3

L

4

L

5

L

6

L

7

*

L

8

L

9

L

10

Type

  Arc.flats

   S

1

     S

2

Connection (ISO 7-1)

Содержание RA 2000

Страница 1: ...hout draining down the system The protective cap supplied with each new valve may be used for manual control during installation only It should not be used as isolation device A manual shut off device...

Страница 2: ...ure is 2 C higher at de sign load condition 2 Remote sensors are supplied with all the capillary tube coiled within the sensor When installing the sensor only the length required should be uncoiled 3...

Страница 3: ...ase request details The required room temperature is set by rotating the sensor handle to match the scale number with the setting register The correlation between scale Setting the temperature numbers...

Страница 4: ...o temperature variations The time constant fig 3 depends on the specific heat and surface of the sen sor At a sudden change of the ambient temperature at time 0 the thermostat will react as shown rela...

Страница 5: ...sible To ensure that the valve capacity of a fully opened valve is not significantly greater than that at 2 degrees C P deviation all RA FN valves have a modified valve characteristic This improved va...

Страница 6: ...Capacities Use the following sizing charts to select the correct valve for the radiator in question Heat requirement 2 05 kW Temperature drop 11 C Differential pressure across the radiator 0 05 bar 5...

Страница 7: ...ard beneath the radiator if free of surface pipes All remote sensors are now supplied with ultra thin capillary Simply pull out the length required 2m max and fix using clips provided Remote temperatu...

Страница 8: ...perature adjuster DN D d2 RA FN 10 10 Rp 3 8 R3 8 60 85 27 52 22 47 96 22 27 RA FN 10 UK 10 Rp 3 8 R3 8 103 26 51 22 22 27 RA FN 15 15 Rp 1 2 R1 2 67 95 30 58 26 47 96 27 30 RA FN 15 UK 15 Rp 1 2 R1 2...

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