Determination Of The Maintenance Interval/ Maintenance Display; Setting The Pump Output - Vaillant ecoTEC exclusive 832 Installation And Maintenance Instructions Manual

7.2.6 Determination of the maintenance interval/
maintenance display
The electronics of the ecoTEC exclusive allow you to
determine the maintenance intervals for the appliance.
This function serves to provide a signal that, after a
specific, adjustable, number of burner operating hours,
the boiler needs to be serviced. The service signal SEr is
shown in the display of the ecoTEC exclusive alternately
with the current pressure after expiry of the set number
of burner operating hours. The display also appears on
the VRT 360 and 400 (accessories).
Number of
Heat demand
persons
3 - 4
32 kW
4 - 6
4 - 6
38 kW
4 - 8
Table 7.3 Guide values for operating hours
The operating hours to the next service can be set under
diagnosis point "d.84". Guide values can be taken from
Table 7.3; these values correspond to an approximate
operating time for the appliance of one year.
The operating hours can be set in steps of ten from
0 to 3000 h.
If there is no number in the diagnosis point "d.84", but
there is the symbol „-", then the „maintenance display"
is not active.
i
After the set number of hours have expired,
the service interval must be entered in the
diagnosis mode again.
Installation and maintenance instructions ecoTEC exclusive 0020017768_07
Adapting the appliance to the heating system
Burner operating hours to the next
inspection/service (dependent
upon the type of appliance)
2.800 h
2.900 h
3.000 h
3.100 h
7.2.7

Setting the pump output

The ecoTEC exclusive is fitted with a speed controlled
pump which sets itself to the hydraulic conditions and
the heat demand of the heating system.
Under certain conditions the output of the pump can be
set, in five steps to 53, 60, 70, 85 or 100% of the maxi-
mum pump output using the diagnosis system. This
switches the speed control off.
i
When using an flow header we recommend
turning off the speed control and setting the
pump output to 100%.
400
300
200
100
0
0 200 400 600
Fig. 7.2 Characteristic pump line for ecoTEC exclusive 832 and
838
Legend:
1 at 27 kW
2 at 30 kW
800 1000 1200 1400 1600
Volumeflow [l/h]
7
2
1
1800
37