Component Resistance Characteristics; Sensor Values - Flue Overheat Thermostat; Sensor Values - Flow Temperature Sensor; Sensor Values - Cylinder Temperature Sensor - Worcester Greenstar 4000 Installation And Maintenance Instructions Manual

Technical Specifications/Logs
13.3

Component resistance characteristics

The supply sensors (flow temperature sensor at heat exchanger
assembly and flow temperature sensor at flow pipe) share the same
resistance values.
▶ Refer to table 39.

13.3.1 Sensor values - Flow temperature sensor

Temperature [°C ± 10 %]
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95
Table 39 Flow temperature sensor

13.3.2 Sensor values - Cylinder temperature sensor

Temperature [°C ± 10 %]
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95
Table 40 Cylinder temperature sensor
88
Resistance []
33 404
25 902
20 247
15 950
12 657
10 115
8 138
6 589
5 367
4 398
3 624
3 002
2 500
2 092
1 759
1 486
1 260
1 074
918.3
788.5
Resistance [k]
35 964
28 507
22 756
18 273
14 768
11 977
9 783
8 045
6 650
5 521
4 606
3 855
3 242
2 744
2 332
1 989
1 703
1 463
1 262
1 093

13.3.3 Sensor values - Flue overheat thermostat

Normally closed thermostat
Opening temperature
Close temperature
Table 41 Flue overheat thermostat
13.3.4 Sensor values - Heat exchanger assembly temperate limiter
Normally closed thermostat
Opening temperature
Close temperature
Table 42 Heat exchanger assembly temperate limiter
13.3.5 Sensor values - Outside temperature sensor
Temperature [°C ± 10 %]
-20
-16
-12
-8
-4
0
4
8
12
16
20
24
Table 43 Outside temperature sensor (for weather-compensated control
units, accessory)
13.4 Code plug
Type Gas type
GR4700iW 24 S Natural gas
GR4700iW 24 S Liquid propane (LPG) 20165
GR4700iW 21 S Natural gas
GR4700iW 21 S Liquid propane (LPG) 20167
GR4700iW 18 S Natural gas
GR4700iW 18 S Liquid propane (LPG) 20169
GR4700iW 15 S Natural gas
GR4700iW 15 S Liquid propane (LPG) 20171
GR4700iW 12 S Natural gas
GR4700iW 12 S Liquid propane (LPG) 20173
Table 44 Code plug
Greenstar 4000 – 6 720 891 162 (2020/09)
Temperature ( °C) Resistance ( )
≥ 112 3500
≤ 111 6500
Temperature ( °C)
≥ 120
≤ 80
Resistance []
2 392
2 088
1 811
1 562
1 342
1 149
984
842
720
616
528
454
Number
20025
20166
20168
20170
20172