Baxi MainEco Heat 15 Wartungshandbuch PDF herunterladen (Seite 55)

7215845 - 01 (08/14) MainEco Heat 55

Maintenance 10

10.3.13 Setting the Gas Valve (CO

Check)

The CO

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 CO

cannot be

achieved contact the ‘heateam’ technical helpline.

1. The maximum rate CO

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 CO

is 9.3% ±0.1%. If the CO

is incorrect alter

the Throttle Adjustment Screw (Fig. 57). Turn the screw

anticlockwise to increase the CO

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 CO

is 8.9% ±0.1%. If the CO

is incorrect alter

the Offset Adjustment Screw (Fig. 57). Turn the screw clockwise

to increase the CO

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 CO

READINGS !

7. Check the Combustion Performance (CO/CO

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 CO

at min. rate

Increase CO

at min. rate

Reduce CO

at max. rate

Increase CO

at max. rate

Plug

Analyser Probe

Flue Sampling

Point

Fig. 54

Fig. 55

Fig. 56

Fig. 57

1 2 ... 50 51 52 53 54 55 56 57 58 59 60 ... 63 64

Kommentare zu diesen Handbüchern

Keine Kommentare

Baxi MainEco Heat 15 Wartungshandbuch Seite 55

Kommentare zu diesen Handbüchern

Verwandte Produkte und Handbücher für Warmwasserbereiter & Kessel Baxi MainEco Heat 15