2
EN/04.2021 © STULZ GmbH – all rights reserved
condensate pump InstRuctIons
Water connection
Two adapters for the water inlet with diameters 25 mm
and 32 mm are supplied with the pump.
• Lay a pipe from the condensate drain of the A/C unit
to the water inlet of the pump. The piping must have a
slope.
The drain pipe must have an internal diameter of 10 mm.
• Connect a flexible plastic hose at the water outlet of the
pump.
• Consider the performance data of the pump according
to the diagram when installing the hose.
• Ensure that the hose is free of kinks and connect it to
the local sewage network.
Water outlet 10 mm
Water inlet
24 mm
Electrical connection
• Connect the pump to a power supply via an earth leakage circuit breaker according to the standard IEC 345.
For a power supply out of the A/C unit, you can use the option “M99209 - Power supply for condensate
pump”.
• Connect the lines of the alarm contact (black-grey) to an alarm device (e.g. digital input on the controller).
When the water level is too high the contact is opened and an alarm is triggered.
Start-up
• Pour some water into the pump and check whether the pump is switch on and off.
• Pour continuously water into the pump until the alarm is triggered. In case of an alarm, the pump continues
operating, if it is still functional.
After the check, the pump is ready for operation.
Maintenance
• Disconnect the pump from the power supply.
• Open the pump housing.
• Clean the pump tank with a cleaning solution (potassium hypochlorite KClO) annually, to prevent bacterial
infection. Make sure that the floating module remains clean.
• After reassembling the pump, check the function.
