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Applications Manual
System #25
Heatronic Internal Wiring
Bosch Controls
Dry contacts
Outdoor
Sensor
DHW Sensor
Supply Sensor
Wiring:
Low Voltage
Wire Bosch Control to Terminals B B of the
Heatronic control
Heatronic Settings:
Boiler
Typical supply
Heating
temperatures
Dial
1
approx. 95 °F (35 °C)
2
approx. 109 °F (43 °C)
3
approx. 122 °F (50 °C)
4
approx. 140 °F (60 °C)
5
approx. 153 °F (67 °C)
6
approx. 167 °F (75 °C)
max
Approx. 194 °F (90°C)
DHW thermostat
min
e
max
Bosch Thermotechnology Corp.
B
Bosch
Control
B
4
2
1
A
F
Application
Frost protection
Radiant floor heating
Panel radiator system
Cast Iron radiator system
Baseboard & convector system
Typical DHW temperatures
approx. 104 °F (40 °C)
approx. 122 °F (50 °C)
approx. 140 °F (60 °C)
Note: For Low Water Cutoff Wiring see
Appendix D of this manual
L
N
white
mains
120v/60 hz
External Boiler Junction box
Line Voltage
Wire Main power supply (120 v) to White molex
3
4
5
2
1
6
max
Bosch Greenstar | 55
120 Vac Supply
Ground
Neutral
L
N
black
ch pump
for unmixed heating
(Not Used)
reset
eco
3
4
e
2
6
1
max
Data subject to change
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