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7<br />
Electrical connections<br />
EV terminal (external switching contact)<br />
This terminal can be used for example for the safety switch<br />
of floor heating. This protects the floor heating against too<br />
high boiler water temperatures (external manual reset high<br />
limit). The boiler is shut down when the external switching<br />
contact is opened.<br />
The normally closed contacts of a LWCO will shut down<br />
burner operation but allow the pump to continue to operate<br />
in case of a low water condition.<br />
DWV<br />
Terminal for connection of an external 3-way valve (not<br />
used).<br />
PK<br />
Connector for the primary loop pump 120V 60Hz.<br />
PS<br />
Connector for the DHW tank pump 120V 60Hz.<br />
PZ<br />
Connector for the DHW recirculating pump 120V 60Hz.<br />
Netz<br />
Main power connector 120V 60Hz (-15% +10%).<br />
120-volt connections<br />
CAUTION<br />
Make sure that the power consumption of each<br />
of the terminals 7 – 9 (see circuit diagram) does<br />
not exceed 250 W or 5 Amp.<br />
28<br />
Logamax plus GB142-24/30/45/60 - We reserve the right to make any changes due to technical modifications!
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