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CONTROLE EN ONDERHOUD
6 720 675 123 (T30.35123.04) (2008/12)
37
16.4 Controle van de rookgasafvoer
16.4.1 Rookgasbeveiliging TTB
Fig. 34
De cv-ketel is uitgerust met een rookgasbeveiliging TTB.
De rookgasbeveiliging TTB schakelt de cv-ketel uit wan-
neer rookgassen via de trekonderbreker (23) in de instal-
latieruimte komen. Het contact (24) opent, de brander
stopt en de foutmelding A4 verschijnt.
Bij herhaalde storingsmelding A4 moet de installateur
geraadpleegd worden. De werking van de rookgasafvoer
moet verbeterd worden door de installateur.
16.4.2 Testen van de rookgasbeveiliging TTB
Test de rookgasbeveiliging TTB bij de inbedrijfstelling en
bij elke onderhoudsbeurt.
B Cv-ketel in bedrijf stellen op maximaal vermogen en
wacht tot de cv-keteltemperatuur hoger is dan 50°C.
B De rookgasafvoerbuis wegnemen en alleen de uitgang
van de trekonderbreker met een onbrandbare plaat
afdekken.
B De cv-ketel schakelt na ongeveer 2 minuten uit. In het
display verschijnt A4.
B De plaat terug wegnemen en de rookgasafvoerbuis
terug monteren. Na ongeveer 15 minuten gaat de cv-
ketel automatisch terug in werking. Opmerking: deze
wachttijd kan opgeheven worden door de hoofdscha-
kelaar uit- en opnieuw in te schakelen.
24
EHR-17-6
23
24
23
EHLE
17/27
EHLE 39
24
23
EHR-44-6
De rookgasbeveiliging TTB mag NOOIT !
buiten gebruik gesteld worden.
37


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