Installation and operating instructions Wilo-Para STG 35
en
Venting The pump venting function is activated by pressing and
holding the operating button (for 3 seconds) and auto
-
matically vents the pump.
However, this function does not vent the heating system.
Manual restart A manual restart is initiated by pressing and holding the
operating button (for 5 seconds) and unblocks the pump
as required (e.g. after a long idle time in the summer).
Lock/unlock the
button
The key lock is activated by pressing and holding the
operating button (for 8 seconds) and locks the pump’s
current settings. It protects against undesired or unau
-
thorised adjustment of the pump.
Activating
factory setting
The factory setting is activated by pressing and holding
the operating button whilst switching off the pump.
When the pump is switched on again, the pump runs
using the factory settings (delivery condition).
4 Intended use
General information High-efficiency circulators in the Wilo-Para series are
exclusively intended for circulating fluids in hot-water
heating systems and similar systems with constantly
changing volume flows.
Permitted fluids:
• Heating water according to VDI 2035
(CH: SWKI BT 102-01).
• Water-glycol mixtures* with a maximum of 50% glycol.
* Glycol has a higher viscosity than water. If admixtures
of glycol are used, the pumping data of the pump must
be corrected to match the mixing ratio.
Intended use includes observing these instructions and
the specifications and markings on the pump.
NOTICE
Only introduce ready-to-use mixtures to the
system. The pump must not be used to mix fluid
in the system.
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