Wolf CGB-75 Assembly And Operating Instructions Manual page 15

Condensate drain connection
Connect the siphon supplied to the connector on the
combustion chamber pan.
Please note: The siphon must be filled with water prior to
commissioning.
If condensate is directly routed to the public sewer, ensure
ventilation, so that the public sewer cannot affect the
condensing boiler.
There is a risk of poisoning through flue gases being
expelled if the appliance is operated with an empty
siphon. Therefore, fill the siphon with water prior to
commissioning. Undo the siphon, remove and fill
until water runs out of the drain hole on the side.
Refit the siphon and ensure the gasket seals tightly.
The condensate must only be routed through pipes that are
resistant.
Observe the relevant instructions if you install a neutralising
system (accessory).
Condensate pump
When using a condensate pump, the alarm output can be
connected at connection E1. Set the boiler parameter HG13
to "2".
The alarm output switches the appliance OFF if condensate
cannot be pumped out correctly.
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Installation
Figure: Siphon
Figure: Neutralising system (accessory)
Siphon
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