Installation and Servicing ecoTEC plus
27
1
3
2
4
PRESSURE TEST
POINT
ELECTRICAL
PLUG
GAS CONTROL
VALVE
THROTTLE
OFFSET
ADJUSTMENT
Fig. 5.3 Gas control valve
5 Commissioning (Part I)
5.1.2
Initial Lighting
The lighting procedure of the boiler is fully automated.
To prepare the boiler for initial lighting first ensure
that all external controls are not calling for heat.
For access open the front flap by pulling at the centre
of the case strip.
Turn on the appliance at control (1), see fig 5.4.
When you turn on the appliance, the current operating
status appears in the display (2), see fig 5.4.
Adjust the control (1) anti-clockwise to its lowest
setting (The indent position just before off).
Turn on external heat demand to boiler.
The fan should start and after a few seconds the
ignition will commence.
Turn domestic hot water control knob (4) to max if
accessory VR 65 is fitted.
Note!
Allow the boiler to run on minimum until
commissioning is complete.
In the unlikely event that a problem occurs with the
operation of the ecoTEC boiler, the following points
should be checked:
Boiler fails to operate:
– Is the gas supply turned on?
– Is there enough water in the heating system?
– Is the electrical supply switched on?
– Is the control knob (
1,
fig 5.4) in the operating
position?
– Is there an ignition problem?
Fig. 5.4 Switching on the appliance
Caution!
Inappropriate modifications can cause damage.
If your boiler still does not operate then
please consult the trouble shooting section of
this literature.
5.1.3
Ignition problems
If the burner fails to ignite after five attempts, the
device does not start up and switches to “Fault”. This
is indicated by the fault code “F.28” or “F.29” in the
display.
The display also shows the flame symbol with a cross
through it (2), see fig 5.4.
Automatic ignition can only take place after you
manually reset the fault.
• To reset the fault, press the reset button (3), see fig
5.4. and hold it down for one second.
Caution!
If the boiler still shuts off after three
attempts of resetting, please consult the
trouble shooting section of this literature.
5.1.4
Flue problems
This appliance is fitted with a fan. If the fan does not
work properly, the appliance will switch itself off.
The display shows the symbols and and the fault
message “F.32”.
Note!
If contacting Vaillant Service Solutions please
remember to quote the fault code, as this will
help to pinpoint the fault.
5.1.5
Testing - gas
The boiler is supplied ready adjusted and no further
gas adjustments are necessary, however both the gas
inlet working pressure and the maximum gas rate
should be checked at least 10 minutes after the burner
has lit, see table 5.1.
The gas inlet working pressure can be checked at the
pressure test point on the gas valve (fig 5.3.). The gas
inlet working pressure should be between 17 mbar to
25 mbar when the boiler is firing at full rate, refer
section 9. After testing the inlet pressure remove
the U gauge, tighten the sealing screw and test for
soundness
Note!
The burner pressure cannot be measured
at the gas valve due to the fan/burner
design. Replace the inner and front casing
panels. Record appliance working gas inlet
pressure (mbar) in Benchmark Installation,
Table 5.1
Max. nett
Gas Rate
heat input Natural gas (m
3
/h) Propane (kg/h)
(kW)
nom. + 5% - 5% nom. + 5% - 5%
415
15.26
1.62 1.70 1.54
1.19
1.25 1.13
418
18.9
2.00 2.10 1.90
1.47 1.54 1.40
428
28.6
3.03 3.18 2.88 2.22 2.33 2.11
438
38.35
4.06 4.26 3.86 2.98 3.13
2.83
Model
Supplied by HeatingSpares247.com
Содержание eco TEC plus 415
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