38
Instructions for installation and servicing ecoTEC 839592_12
5.10 Refitting
the
case
1
2
Fig. 5.9 Refitting the case
• Hook the top of the front casing over the lip on the
top of the boiler chassis and push the bottom of the
front casing into place.
• Ensure the spring retaining clips (
2
) engage correctly.
• Tighten case securing screw (
1
).
5.11
Adjusting the central heating output
(range rating)
The boilers are fully modulating for central heating, and
it is therefore not necessary to range rate the boiler.
However, if desired, it is possible to range rate the
boiler, as follows:
• Press the “
i
” and “
+
” buttons simultaneously.
• Keep the “
+
” button pressed until “
d.0
” is displayed.
Note
The display runs from “d.0” to “d.99” before
restarting at “d.0”.
• Press the “
i
” button. The “
=
” symbol is displayed.
The part load setting is now displayed in kW.
• Use the “
+
” and “
–
” buttons to increase or decrease
the value in steps of 1 kW. The displayed value will
flash while the adjustment procedure is being carried
out. The available ranges of settings are given in
Table 5.3.
• Push the “
i
” button for about five seconds, or until the
display stops flashing. The value is now saved to
memory. The display will now return to its normal
state (current heating system flow temperature, e.g.
45 °C).
• Press the “
i
” and “
+
” buttons simultaneously to cancel
adjustment mode.
Adjustment mode is also cancelled if no button is
operated for a period of 4 minutes.
Appliance
Heating output in kW
ecoTEC plus 612
5 – 12
ecoTEC plus 615
5 – 15
ecoTEC plus 618
7 – 18
ecoTEC plus 624
9 – 24
ecoTEC plus 630
10 – 30
ecoTEC plus 637
12 – 37
ecoTEC plus 824
7 – 19
ecoTEC plus 831
9 – 24
ecoTEC plus 837
12 – 28
ecoTEC pro 24
7 – 19
ecoTEC pro 28
9 – 24
Table 5.3 Heating system part load adjustment ranges
5.12 Gas
changeover
Note
To reset the appliance from natural gas to LPG
mode, you need the Vaillant conversion kit
Art. No. 00 2001 0641.
To reset the appliance from LPG to natural gas
mode, you need the Vaillant conversion kit
Art. No. 00 2001 0642.
Convert the appliance as described in the
conversion kit.
5 Commissioning Part I
