Cleaning The Condense Trap; Checking The Expansion Vessel - Vaillant ecoTEC exclusive 832 Installation And Maintenance Instructions Manual

8.6

Cleaning the condense trap

a
Danger!
Risk of poisoning due to escaping flue gas!
Flue gases may escape through the empty
condensate siphon.
> After cleaning, fill the condensate siphon
with water to prevent flue gas from escap-
ing through the siphon.
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Fig. 8.8 Cleaning the condense trap
> Unscrew the lower section (1) of the water condense
trap.
> Clean the bottom of the trap by flushing it out with
water.
> Fill the lower section with water until about 10 mm
below the upper edge.
> Fasten the lower section onto the condense trap
again.
Installation and maintenance instructions ecoTEC exclusive 0020017768_07
Inspection and maintenance
8.7

Checking the expansion vessel

Fig. 8.9 Checking the expansion vessel
i
This check need not be performed every year
- a check every three years is sufficient.
> The maintenance cocks of the central heating system
must be closed.
> Release the pressure from the appliance.
> Remove the valve cover from the filling connection of
the expansion vessel.
> Check that the internal pressure in the expansion
vessel is between 75 and 90 kPa (0.75 and 0.9 bar). If
the pressure is less than this, the vessel must be
pumped up again using an air pump.
> Refit the valve cover.
> Re-pressurise the boiler and the heating system.
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