Calling Up The Installer Level; Live Monitor (Status Codes); Using Check Programmes; Start-Up - Vaillant ecoFIT pure 825 Installation And Maintenance Instructions Manual

6.3

Calling up the installer level

1. Only call up the installer level if you are a competent
person.
2.
Press and ("i") at the same time.
◁
S.xx appears in the display (current unit status).
3.
Press to access the installer level.
◁
Code and -- appear in the display.
4.
Set the value 17 (code) and confirm by pressing
5.
Press to access the check programmes (P) and the
fault codes (F) and to return to the diagnostics codes
(D).
6.
Use or to set the required value and confirm by
pressing .
7.
Confirm by pressing ( ).
8.
Press to cancel a setting or exit the installer level.
6.4

Live Monitor (status codes)

Menu → Live monitor
Status codes in the display provide information on the pro-
duct's current operating status.
Status codes – Overview (→ Page 32)
6.5

Using check programmes

Call up the installer level + 1x
Display Meaning
P.00 Purging check programme:
The internal pump is cyclically actuated.
The heating circuit and the hot water circuit are
purged via the automatic air vent (the cap of the
automatic air vent must be released).
1 x : Start heating circuit purging
2 x ( ): Start hot water circuit purging
3 x ( ): Restart heating circuit purging
1 x (Cancel): End purge programme
Note
The purge programme runs for 7.5 min per circuit
and then terminates.
Purging the heating circuit:
Diverter valve in heating position, actuation of in-
ternal pump for 9 cycles: 30 sec. on, 20 sec. off.
Display: Active heating circuit.
Purging the hot water circuit:
After the above-mentioned cycles have run or the
right-hand selection button has been pressed again:
Diverter valve in the hot water position, actuation
of the internal pump as above. Display: Active hot
water circuit.
P.01 Maximum load check programme:
After successful ignition, the product is operated at
maximum heat input.
P.02 Minimum load check programme:
After successful ignition, the product is operated at
minimum heat input.
P.06 Filling mode check programme:
The diverter valve is moved to the mid-position. The
burner and pump are switched off (to fill or drain the
product).
0020230531_01 ecoFIT pure Installation and maintenance instructions
7

Start-up

7.1

Carrying out the initial start-up

Initial start-up must be carried out by a customer service
technician or an authorised competent person using the first-
commissioning-checklist. The first-commissioning-checklist
in the appendix (→ Page 41) of the installation instructions
must be filled out and stored carefully along with the unit's
documentation.
▶
.
Carry out the initial start-up using the first-commission-
ing-checklist in the appendix.
▶
Fill out and sign the first-commissioning-checklist.
7.2

Checking the type of gas

Make sure that the product is set up correctly by checking
the type of gas. This ensures optimum combustion quality.
▶
Check the type of gas as part of routine product mainten-
ance work when replacing components or carrying out
work on the gas route.
7.3

Checking the factory setting

The product's combustion has been factory tested and is
preset for operation with the gas group indicated on the iden-
tification plate.
The product is only authorised to be operated with natural
gas.
▶
Check the information about the type of gas indicated on
the identification plate and compare this with the type of
gas available at the installation location.
Conditions: The product design is not compatible with the local gas
group
▶
Do not start up the product.
Conditions: The product design is compatible with the local gas group
▶
Proceed as described below.
7.4 Checking and treating the heating
water/filling and supplementary water
Caution.
Risk of material damage due to poor-qual-
ity heating water
▶
Ensure that the heating water is of suffi-
cient quality.
▶
Before filling or topping up the system, check the quality
of the heating water.
Checking the quality of the heating water
▶
Remove a little water from the heating circuit.
▶
Check the appearance of the heating water.
▶
If you ascertain that it contains sedimentary materials,
you must desludge the system.
▶
Use a magnetic rod to check whether it contains mag-
netite (iron oxide).
▶
If you ascertain that it contains magnetite, clean the sys-
tem and apply suitable corrosion-protection measures, or
fit a magnet filter.
▶
Check the pH value of the removed water at 25 °C.
Start-up 7
15