Bedienungsanleitung DRU Diablo Next (Seite 21 von 36) (Englisch)

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INSTALLATION MANUAL

2.12 Does appliance switch off

exactly 22 sec after

servomotor starts running?

2.19 Replacegascontrol

(thermo-electric valve does not

shut down quick enough because

of some permanent magnetism).

2.14 Does main burner go out

after 'some time'? 2.18 Can fire be switched off?

2.20 Perfect!

You have a well functioning

fire

2.16 Is flame picture OK?

2.13 Checkcrosslightingmain

burnerand2ndthermocouple

system.



Measurevoltageof2nd

thermocouple

- Check voltage in mV, 22 sec after

servomotor starts to run, c.q. just

before fire goes out. Glass window

to be mounted!

- Measure between black wire + earth

point on gas control.

- Requirement: voltage >5 mV after

rectification actions.

Voltage0mV

- 2nd couple defective.

- Cross ligting main burner very slow.

Take actions "Cross lighting too

slow" (see below), before taking any

further action!!

Voltage<1,8mV

- Cross ligting main burner too slow.

Take actions "Cross lighting too

slow" (see below), before taking any

further action!

- 2nd couple barred. Check:

- 2nd couple free of vermiculite,

chips or pebbles;

- position of logs or pebbles;

- burner holes under 2nd couple

open.

- 2nd couple defective (cross lighting

OK, but voltage creeps up too slow).

- Flames instable, see 2.15. Rectify,

before any other action is taken!!

- Burner pressure (too high or too

low).

- 2nd couple not positioned correctly

in flame.

Bend into correct position (see fig.

43).

- 2nd thermocouple positioned

correctly (see manual). Bend into

flame (only if cross lighting and

flame picture are OK!! See 2.17).

Voltage>1,8mV

- Receiver defective. Replace.

Crosslightingofmainburnertoo

slow

Measure the time in sec from start

running of servomotor till the flame

reaches the 2nd couple.

Requirement: the flame must be in

position at the 2nd couple <10 sec.

If not, check:

- 2nd couple free from vermiculite,

chips or pebbles;

- position of logs or pebbles;

- burner holes (locally) blocked.

Remove vermiculite dust.

- vermiculite missing or not evenly

distributed across burner(s);

- chips on burner;

- lack of combustion air. See 2.15.

- cross lighting in low setting

(possible when thermostat function

is used).

2.15 Check

Gassupply

- Supply pressure does not drop

away as main burner (or other

appliance) lights, causing pilot

flame to shorten.

- Burner pressure (too high or too

low).

Flamesinstable(suffocating,lack

ofair).

Dancing flames on burner.

Lack of combustion air. Check:

- flue system permissible;

- proper flue terminal used, make

should be 'DRU';

- terminal correctly sited on roof or

wall relative to obstructions;

- integrity of flueing system (no

interruptions, not barred,

cobwebs);

- air inlet guides;

- flue restrictor/damper;

- throttle rings.

See manual for specific

requirements.

PowerVent®

Possibly not enough draught. Check

if pressure difference set too high.

Consult PowerVent® installation

manual.

Pilotburner

- Pilot burner dirty. Weak pilot

flame being drawn away by

flames main burner.

Clean with compressed air.

See 2.04.

2.17 Check

Flames:toolow

- Supply pressure does not drop

away as main burner or other

appliances in the building light,

causing flames to shorten.

- Burner pressure (too low).

- False air: Check soundness glass

window gasket/ soundness of the

connection of the glass panes of

two/three sided appliances (no

slots allowed).

Flames:toohigh

- Line pressure.

- Burner pressure.

Flames:noevendistributionor

outonpartoftheburner(s)

- Position of logs or pebbles.

- Burner holes (locally) blocked.

Remove vermiculite dust.

- Vermiculite not distributed evenly

across burner(s).

- Adjustment of throttle ring(s).

Flames:tooblue/tooyellowor

sooting

- Air inlet guides.

- Flue restrictor/damper.

- Adjustment of throttle ring(s).

Flames:suffocating:lackofair

You see dancing flames on burner,

seeking for air. See 2.15.

Flamepicture'restless'

Indication of too much draught.

Check:

- adjustment of appliance damper

and air inlet guides);

- vertical flue length allowed (<12

m);

- window glass not mounted gas

tight.

PowerVent®?Check:

Possibly too much draught. Check:

- Pressure difference set too high.

- Silicon pressure measurement

hoses leaking.

Consult PowerVent® installation

manual for more info.

no no yes yes

yes

yes no

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