Filling The Condensation Water Siphon; Adjusting The Pumping Capacity; Adjusting The By-Pass - Vaillant ecoTEC plus 612 Instructions For Installation And Servicing

5 Commissioning Part I
5.6

Filling the condensation water siphon

Fig. 5.4 Filling the condensation water siphon
Danger!
Note that if the boiler is run with an empty
condensate trap there is a danger that fumes
might escape into the room and cause poison-
ing. For this reason, it is important to ensure
that the trap is topped up each time the unit is
cleaned.
• Remove the lower part (1) of the condensate water
siphon by turning the bayonet catch in anticlockwise
direction.
• Fill the lower part with water until about 10 mm below
the upper edge.
• Refit the lower part of the condensate water siphon.
34
5.7

Adjusting the pumping capacity

Only in ecoTEC plus:
The capacity of the two-stage pump can be adjusted to
the requirements of the heating system. If needed,
change the setting of the operating mode dependent
pump speed under the diagnosis point "d.19" (see
Section 8.1.2).
5.8

Adjusting the by-pass

The appliances have an adjustable by-pass valve.
The pressure can be adjusted between 170 and 350 mbar.
Approx. 250 mbar is preset (mid-position). The pressure
changes by approx. 10 mbar each time the adjusting
screw is rotated. By turning right, the pressure increases
and turning left decreases it.
1
1
Fig. 5.11 Adjusting the by-pass valve (in 800 series)
1
Fig. 5.12 Adjusting the by-pass valve (in 600 series)
• Regulating the by-pass on the adjusting screw (1).
Instructions for installation and servicing ecoTEC