Component Close Up: Thermistor Resistances R-W

 

Resistances of Thermistors Manufacturers R-W

Following on from "Testing a boiler thermistor" in Thermistors, please use the readings in the table below as an approximate expected multimeter reading of different thermistors from from the respective model as indicated. Manufacturers include Ravenheat, Radiant, Saunier Duval, Sime, Viessman, Vaillant, Vokera, Worcester,

For further readings please click: Thermistor Readings A-B or Thermistor Readings C-P,

 

Manufacturer

Model/Range

Sensor Type

Approx Temperature  °C

Expected Resistance Reading

Approx Temperature °C

Expected Resistance Reading

Radiant 

RSF  RCM  RSM Ranges

NTC Sensor

25

10 k

 

 

Ravenheat

CSI  Range 

NTC Sensor

20

12.5 k

80

1.5 k

Ravenheat

CSI 120 

NTC Sensor

20

12.5 k

80

1.5 k

Ravenheat

HE Range 

NTC Sensor

20

12.5 k

80

1.5 k

Ravenheat

LS  Range

NTC Sensor

20

12.5 k

80

1.5 k

Ravenheat

RSF 82 ET

NTC Sensor

20

12.5 k

80

1.5 k

Ravenheat

RSF 84ET

NTC Sensor

20

12.5 k

80

1.5 k

Ravenheat

Silver Star

NTC Sensor

20

12.5 k

80

1.5 k

Ravenheat

White Star

NTC Sensor

20

12.5 k

80

1.5 k

Saunier Duval

Combitek F23E

NTC Sensor

0

32.6 k

100

680

Saunier Duval

Ecosy 2 28E

NTC Sensor

0

35.4 k

80

1.7 k

Saunier Duval

Ecosy SB,  24E  &    28E

NTC Sensor

0

35.4 k

110

749

Saunier Duval

Isofast F28E,F35E,F28E/1 & F35E/1 

NTC Sensor

0

32.6 k

80

1.2 k

Saunier Duval

Protherm 80EC 100EC

NTC Sensor

20

10 k

 

 

Saunier Duval

SD 623

High limit thermistor

20

5-7

 

 

Saunier Duval

SD30e

NTC Sensor

25

10 k

80

2.5 k

Saunier Duval

Sylva FF 24E

NTC Sensor

0

32.6 k

80

1.2 k

Saunier Duval

Thelia 623

NTC Sensor

20

11 k

60

2.5 k

Saunier Duval

Thelia 623

PTC Sensor

20

40

60

8 k

Saunier Duval

Thema F SB 23E

NTC Sensor

0

32.5 k

80

920

Saunier Duval

Thema F23E, C23 combitek F32E

NTC Sensor

0

33 k

80

1.2 k

Sime

Eco comfort HE +

NTC Sensor

20

12 k

80

1.6 k

Sime

Format Combi 30HE

NTC Sensor

20

12 k

80

1.6 k

Sime

Format System 25HE 

NTC Sensor

20

12 k

80

1.6 k

Sime

Friendly Format, Format 80E + 100E

NTC Sensor

20

12 k

80

1.6 k

Sime

Murelle HE

NTC Sensor

20

12 k

80

1.6 k

Sime

Planet  Dewy/Super 4 WM

NTC Sensor

20

12 k

80

1.6 k

Sime

Super 90, Super 4 & Friendly

NTC Sensor

20

12 k

80

1.6 k

Vaillant

eco TEC plus 612, 615, 618, 624 & 630 (System Boilers)

NTC Sensor

20

10 k

 

 

Vaillant

eco TEC pro 28, plus 824 & 831 (Combi Boilers)

NTC Sensor

20

10 k

80

1.3k

Vaillant

Ecomax

NTC Sensor

25

2.2 k

90

250

Vaillant

Sine 18, VCW 242/221 range

NTC Sensor

30

2 k

90

250

Vaillant

Turbomax 242E

NTC Sensor

30

2 k

80

270

Viessmann 

Vitodends 100 WB1A

NTC Sensor

15

20 k

80

1.5 k

Viessmann 

Vitodends 200 WB2A

NTC Sensor

15

20 k

80

1.5 k

Vokera

Compact 24/28

NTC Sensor

15

15 k

82

1.5 k

Vokera

Compact 28

NTC Sensor

15

15 k

82

1.5 k

Vokera

Compact HE 25/29

NTC Sensor

20

15 k

82

1.5 k

Vokera

Compact HE 25/29

NTC Sensor

20

15 k

82

1.5 k

Vokera

Excell 80e & 96e all serial numbers

NTC Sensor

15

15 k

82

1.5 k

Vokera

Linea 24/28

NTC Sensor

15

15 k

82

1.5 k

Vokera

Linea 25-30-35 HE

NTC Sensor

15

15 k

82

1.5 k

Vokera

Linea 726

NTC Sensor

15

15 k

82

1.5 k

Vokera

Linea plus & Linea Plus AG

NTC Sensor

15

15 k

82

1.5 k

Vokera

Linea plus /726/730/735

NTC Sensor

15

15 k

82

1.5 k

Vokera

Maxin 24E/ 28E/24CF

NTC Sensor

15

15 k

82

1.5 k

Vokera

Mynute 10e/14e/16e/20e

NTC Sensor

15

15 k

82

1.5 k

Vokera

Option 24

NTC Sensor

15

15 k

82

1.5 k

Vokera

Rain

NTC Sensor

15

15 k

82

1.5 k

Vokera

Sabre

NTC Sensor

15

15 k

82

1.5 k

Vokera

Synergy 29e

NTC Sensor

15

15 k

82

1.5 k

Vokera

Syntesi 29/35/25/29/25e

NTC Sensor

15

15 k

82

1.5 k

Vokera

ProCombi A

NTC Sensor

20

10k

82

1.5 k

Vokera

ProCombi A

NTC Sensor

20

10k

82

1.5 k

Vokera 

Excell

NTC Sensor

15

15 k

82

1.5 k

Wickes

Wickes C80FF & C95FF

PTC Sensor

20

200 k

80

2.5 k

Worcester / Bosch

350

NTC Sensor

25

10 k

 

 

Worcester / Bosch

15-18 RI System

NTC Sensor

25

14 k

82

1.5 k

Worcester / Bosch

24 CDI

NTC Sensor

20

30 k

80

1 k

Worcester / Bosch

240RSF & 280RSF

PTC Sensor

20

1.5 k

80

25 k

Worcester / Bosch

24i

NTC Sensor

20

33 k

80

680

Worcester / Bosch

24i/28i Junior

NTC Sensor

20

25 k

80

1 k

Worcester / Bosch

280 RSF

NTC Sensor

20

25 k

80

1.5 k

Worcester / Bosch

28Si II / RD 628

NTC Sensor

20

30 k

80

1 k

Worcester / Bosch

9.24 Electronic RSF Economy

PTC Sensor

5

8 k

80

25 k

Worcester / Bosch

9.24 series

NTC Sensor

20

13 k

80

3 k

Worcester / Bosch

Cdi range, Ci range, Si range & C1

NTC Sensor

20

30 k

80

1 k

Worcester / Bosch

Greenstar (all models)

NTC Sensor

20

14.7 k

80

1.7 k

Worcester / Bosch

Greenstar (all models)

Outside temp sensor

-20

2.4 k

25

436

Worcester / Bosch

Greenstar Cdi 

NTC Sensor

20

14 k

80

1.5 k