SDC / DHC

Technical data

 

 

8.1.1Installation recommendations

Mains voltage lines

(mains connection, burners, pumps, servo motors):

Diameter

Max. permissible length

Safety low-voltage lines

1.5 mm2

No limit for installation in buildings.

(sensors, ext. switches upon demand via switching contact, modem connection lines, analog signal lines etc.)

Diameter

Max. permissible length

Data bus lines

0.5 mm2

100 m (looped circuit); longer connection lines should be avoided to prevent the risk of interference

Diameter

Max. permissible length

Recommended layouts

0.6 mm2

50 m (looped circuit, longest distance between a central device and a device to be supplied); longer connection lines should be avoided to prevent the risk of interference.

J-Y(St)Y 2 x 0.6

8.2Sensor resistance values

8.2.1NTC 20

For outside sensor (OT), heat generator sensor (BLRS/BS), tank sensor (DHWS), mixed heating circuit 1 flow sensor (VF1), mixed heating circuit 2 flow sensor (VF2), variable input 1 (VI-1) (setting not for exhaust gas sensor), variable input 2 (VI-2), variable input 3 (VI-3), collector tank/buffer sensor (SBUS).

 

°C

 

 

kΩ

 

°C

 

 

kΩ

 

°C

 

 

kΩ

 

°C

 

 

kΩ

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

–20

 

 

220.6

 

0

 

 

70.20

 

20

 

 

25.34

 

70

 

 

3.100

 

 

–18

195.4

2

 

63.04

25

 

20.00

75

 

2.587

 

 

–16

173.5

4

 

56.69

30

 

15.88

80

 

2.168

 

 

–14

154.2

6

 

51.05

35

 

12.69

85

 

1.824

 

 

–12

137.3

8

 

46.03

40

 

10.21

90

 

1.542

 

 

–10

122.4

10

 

41.56

45

 

8.258

95

 

1.308

 

 

–8

109.2

12

 

37.55

50

 

6.718

100

 

1.114

 

 

–6

97.56

14

 

33.97

55

 

5.495

 

–4

87.30

16

 

30.77

60

 

4.518

 

–2

78.23

18

 

27.90

65

 

3.734

EN2H-0221GE51 R0808

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Honeywell EN2H-0221GE51 R0808 service manual Installation recommendations Mains voltage lines, Safety low-voltage lines

EN2H-0221GE51 R0808 specifications

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