Navien NFB Serie Manuel D'installation Et De Fonctionnement page 76

Tableau de longueur du conduit de ventilation
commune [longueur totale (L) = W + H]
Longueur du conduit de ventilation pour les
chaudières NFB
Charge Modèle
requise
NFB-
(Nombre total
301C
de BTU/h)
602 000 2
903 000 3
1 204 000 4
Charge
Modèle
requise
NFB-
(Nombre total
399C
de BTU/h)
798 000 2
1 197 000 3
1 596 000 4
76 Installation d'un système de ventilation commune
Longueur totale (m)
D = D = D =
10,16 cm 15,24 cm 20,32 cm
71 160
42 96 150
35 80 142
Longueur totale (m)
D = D = D =
10,16 cm 15,24 cm 20,32 cm
53 120
35 80 142
26 60 106
9.2 Clapet anti-refoulement Navien
(clapet contre le refoulement d'air)
Le clapet anti-refoulement Navien empêche le refoulement d'air
dans le conduit d'évacuation pendant le fonctionnement de la
chaudière.
En fermant le conduit d'évacuation dès la fin du cycle de
combustion, le clapet anti-refoulement Navien conserve la chaleur
dans le système pendant de plus longues périodes. Cela permet
d'améliorer l'efficacité thermique du système.
Lorsque vous utilisez un conduit de ventilation
Remarque
commune dans un système en cascade, des
dispositifs anti-refoulement sont requis pour
empêcher les gaz d'échappement de pénétrer
dans le bâtiment.
Éléments inclus
Clapet anti-
refoulement
Guide d'installation
Câble de
communication
Ready-Link
Vis (4)
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Seri es
Cond ensin Wat er
g Wate Hea ters
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Ins tal lat Sy ste m
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Seri es Certified
Wat er Keep this to ANSI Z21.10.3
Hea ters required manual – CSA 4.3. (Only
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ance or
WARN ING service is
If the informa
injury, tion in
or death. these instruct
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Keep this manual Z21.10.3 Do not ● – CSA IF YOU SMELL flamma ble vapors n may result,
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Part 3280, Mobile conform with the codes, the Nationa on and
Homes. Manufa l Fuel Gas Code,
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Safety