Sensor Curves; Temperature Sensor At Digital Burner Control Unit; Hydraulic Resistance; Connection Diagrams - Bosch Condens 7000 F Installation And Maintenance Instructions For The Contractor

17.2

Sensor curves

WARNING:
Danger to life from electric current!
Touching live parts can result in an electric shock.
▶ Prior to every measurement, disconnect the power supply
completely from the heating system.
▶ Always measure the temperatures being compared (room, flow,
outside and flue gas temperatures) near the relevant sensor.
The curves depict mean values and are subject to tolerances.
▶ Measure the resistance at the cable ends.

17.2.1 Temperature sensor at digital burner control unit

Temperature sensor resistance values at digital
burner control unit
Temperature Minimum value
[ °C] [
5 23466.20
10 18770.80
15 15120.00
20 12245.80
25 9951.30
30 8145.40
35 6711.50
40 5560.60
45 4625.40
50 3866.90
55 3239.10
60 2730.20
65 2314.50
70 1969.90
75 1683.30
80 1444.90
85 1241.90
90 1073.10
95 927.60
100 805.20
Table 22 Resistance values
2 similar temperature sensors (twin sensors), which are installed in a
single sensor casing, are used as boiler water temperature sensors.
All temperature sensors in the boiler have the same sensor curve.
Condens 7000 F – 6720871560 (2019/11)
Nominal value Maximum value
[ [
24495.00 25523.80
19553.00 20335.20
15701.00 16282.00
12690.00 13134.20
10291.00 10630.70
8406.00 8666.60
6912.00 7112.50
5715.00 5869.40
4744.00 4862.60
3958.00 4049.10
3312.00 3384.90
2786.00 2841.80
2357.00 2399.50
2004.00 2038.10
1709.00 1734.70
1464.00 1483.10
1257.00 1272.10
1084.00 1094.90
938.90 950.20
815.90 826.60
17.3

Hydraulic resistance

1000
150 kw
75/100 kw
100
10
y
250 kw
1
1000
x
Fig. 72 Flow resistance on the heating water side
x Volumetric flow rate (l/h)
y Pressure drop on the heating water side (mbar)
17.4

Connection diagrams

17.4.1 Control unit connection diagram

▶ To connect the control unit, observe the corresponding technical
documentation and the connection diagram for the specific control
unit.
DANGER:
Danger to life from electric current!
▶ Never use the earth conductor (green/yellow) as a control cable.
NOTICE:
System damage with incorrect installation!
▶ Provide a permanent power supply (not a safety plug).
▶ Ensure that the power supply is connected to the correct phases.
▶ Select the installation, fuse/circuit breaker rating, ON/OFF switch,
emergency stop switch and safety measures in accordance with local
regulations.
Appendix
200 kw
300 kw
10000 100000
0010012496-001
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