Electrical Datas - Buderus Logamax plus Service Manual

3 Failures / Errors
3.5

Electrical Datas

Description
Termperature Limiter
Pramiary HE
Termperature Limiter
(Recuperator-Flue gas)
DHW Temp. Sensor
(NTC)
Flow Temp. Sensor
(NTC)
Flue gas safety (Com-
bustion chamber ) Sen-
sor (NTC, behind
burner)
Pump
Ionisation Electrode
Gas Safety Valve 1
Gas Safety Valve 2
Gas Regulator
Fan
Fan Sensor
2 ad. Fuse T 1,6 A,
230 VAC (L + N.)
Water level switch
Water Flow Rate Sen-
sor (Turbine)
Tab. 8
26
Supply Voltage
24 VDC
24 VDC
5 VDC
5 VDC
5 VDC
230 VAC
--
230 VAC
230 VAC
0 - 24 VDC
230 VAC
1. Vcc = 5VDC (supply)
2. GND (-)
3. Vout (Signal) 5 VDC
230 VAC
24 VDC
1 = "-" 0 VDC
2 = Signal 0-5 VDC
3 = "+" 5 VDC
Value Tolerance
0 Ohm -
0 Ohm -
20 ºC => 12,4 kOhm ± 0,5 kOhm
60 ºC => 2,5 kOhm
20 ºC => 14,8 kOhm ± 0,5 kOhm
60 ºC => 3,2 kOhm
20 ºC => 12,1 kOhm ± 0,5 kOhm
60 ºC => 2,9 kOhm
I = 495 Ohm ± 10 Ohm
II = 355 Ohm
III = 220 Ohm
ca. 3 - 5 µA -
1,55 kOhm ± 10 Ohm
8 kOhm ± 20 Ohm
ca. 80 Ohm ± 5 Ohm
min. 25 mA
max. 130 (LPG
165)mA
38 Ohm ± 5 Ohm
check physical -
0 Ohm -
300 kOhm
(during operation)
9,6 Hz = 1,5 l/dk. ± 2 Hz
68,7 Hz = 10 l/dk. ± 6 Hz
Remarks
Temp. Limit = 110 ºC
Temp. Limit = 100 ºC
--
see resistance table
---
---
common (neutral)
(black cable)
---
Cut supply !
In case of short circuit
: < 300 kOhm.
Can measured in Hz
between 1. and 2.
cable.
GB012 - 25K