Applications Manual Bosch Greenstar
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Bosch Thermotechnology Corp.
Data subject to change
B
B
4
2
1
A
F
9
7
8
LWC
O
Supply Sensor
Dry contacts
Bosch Controls
Outdoor
Sensor
120 VAC
24 VAC
L
N
red
storage
tank pump
L
N
black
ch pump
for unmixed heating
L
N
white
mains
120v/60 hz
Ground
Neutral
120 V
Transformer
External Junction
Box on Bottom of
Greenstar Wall boiler
Heatronic Control
Hydrolevel Safgard 1100
Low Water Cut-Off
Ź
Install a 24VAC 20VA Transformer near the boiler
Ź
Follow LWCO manufacturer’s instructions
Ź
Connect the lead labeled BOILER GROUND (green) to the ground wire of the white plug in the boiler
junction box
Ź
Connect the leads labeled 24V HOT(red) and 24V COMMON(white) to the external 24VAC transformer
(field supplied)
Ź
Inside the Heatronic Control of the boiler, remove jumper from terminal #8 and #9 and connect the leads
labeled SWITCH CONTACT (yellow) to terminals #8 and #9
Appendix D: Wiring Hydrolevel Safgard 1100 Low Water Cut-off
to Greenstar Wall Boiler
Main Power
Supply
Yellow
Yellow
Green
White
Red
Содержание FS 100
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