Baxi EcoBlue 12 Heat ErP, Инструкция по установке и обслуживанию

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7219717 - 02 (08/15) EcoBlue Heat 57
Maintenance 10
10.3.16 Setting the Gas Valve (CO
2
Check)
The CO2 must be only be checked and adjusted to set
the valve if a suitable calibrated combustion analyser is
available, operated by a competent person - see
Section 10.1.3.
If a new gas valve has been fitted it is recommended
that to assist the boiler to light prior to final setting, use
a suitable hexagon key to wind out the Throttle
Adjustment Screw (Fig. 54) until it is flush with the
valve body, then turn the screw 4 full turns clockwise. If
the boiler will not light, or the correct CO2 cannot be
achieved contact the ‘heateam’ technical helpline.
1. The maximum rate CO2 setting can only be reached via the
minimum rate. Press the Chimney Sweep (Fig. 55) button for
approximately 3 seconds. The status signal for the Chimney
Sweep button is orange and flashes green briefly to show that
the minimum rate is selected.
2. Press the Chimney Sweep button again once. The orange
status light for the Chimney Sweep button goes off briefly once
and maximum rate is selected.
When the boiler first lights wait a short time before
inserting the analyser probe to avoid saturation.
3. Remove the plug from the flue sampling point (Fig. 56) and
insert the probe of the flue gas analyser.
4. Check the CO2 is 9.3% ±0.1%. If the CO2 is incorrect alter
the Throttle Adjustment Screw (Fig. 57). Turn the screw
anticlockwise to increase the CO2 or clockwise to decrease
(2.5mm hexagon key).
Do not turn either adjustment screw more than 1/8 of a
turn at a time. Allow the analyser reading to settle
before any further adjustment.
5. Press the Chimney Sweep button twice to select the
minimum rate. The orange status light for the Chimney Sweep
button flashes green briefly and minimum rate is selected.
6. Check the CO2 is 8.9% ±0.1%. If the CO2 is incorrect alter
the Offset Adjustment Screw (Fig. 57). Turn the screw clockwise
to increase the CO2 or anticlockwise to decrease (4mm
hexagon key).
Re-check both the maximum and minimum values if
any adjustment has been made. THERE MUST
ALWAYS BE A DIFFERENCE OF 0.4% BETWEEN
MAXIMUM & MINIMUM CO2 READINGS !
7. Check the Combustion Performance (CO/CO2 ratio). This
must be less than 0.004.
8. Briefly press the RESET button to return the boiler to normal
operating status and remove the analyser probe.
Refit the sampling point plug & ensure there is no
leakage of products !
Chimney Sweep Button
Throttle
Adjustment Screw
Throttle
Adjustment Screw
(cover removed)
Offset
Adjustment Screw
(cap fitted)
Gas Valve
Reduce CO2
at min. rate
Increase CO2
at min. rate
Reduce CO2
at max. rate
Increase CO2
at max. rate
Plug
Analyser Probe
Flue Sampling
Point
Fig. 54
Fig. 55
Fig. 56
Fig. 57