Installation

Branchement de Gaz

CONDUIT DE GAZ

Un système d’alimentation en gaz de bon calibre est essentiel pour obtenir le meilleur rendement du four. Les conduits doivent être calibrés pour fournir suffisamment de gaz pour alimenter tous les appareils sur le conduit sans perte de pression

àl’équipement.

Exemple:

REMARQUE:Les valeurs en BTU de l’exemple sui- vant sont pour le gaz naturel.

Achat d’un four à convection Zephaire-G qui doit être ajouté sur la conduite de cuisson existante.

1.Additionner les valeurs nominales en BTU des appareils utilisés.

Friteuse Pitco

120,000

BTU

Cuisinière 6 brûleurs

60,000

BTU

Four

50,000

BTU

Total

230,000

BTU

2.À ce total, ajouter la valeur nominale en BTU du nouveau four.

Total précédent

230,000

BTU

Zephaire-G

60,000

BTU

Nouveau total

290,000

BTU

3.Mesurer la distance entre le compteur à gaz et la conduite de cuisson. Ceci est la longueur de tuyau. Disons que la longueur de tuyau est de 12,2 mètres (40’) et le calibre du tuyau est de 2,54 cm (1”).

4.Se reporter au tableau approprié pour déter- miner la capacité totale de la conduite de gaz actuelle.

Pour cette exemple, la capacité totale est de 320,000 BTU, la conduite de gaz actuelle n’a pas besoin d’être augmentée.

REMARQUE:Les capacités en BTU données sur les tableaux sont uniquement pour des longueurs droites de tuyaux. Tous les coudes et autres raccords diminuent la capacités de la con- duite. Pour toute autre question, prendre contact avec la compagnie locale de distribution du gaz.

Maximum Capacity of Iron Pipe in Cubic Feet

of Natural Gas Per Hour

(chute de pression de 13 mm (0,5 po)

à la colonne d’eau)

Longeur

Dimensions nominales

de conduit

 

 

 

 

 

3/4”

1”

1-1/4”

1-1/4”

2”

pieds

 

 

 

 

 

 

 

 

 

 

 

10

360

680

1400

2100

3950

20

250

465

950

1460

2750

 

 

 

 

 

 

30

200

375

770

1180

2200

40

170

320

660

990

1900

 

 

 

 

 

 

50

151

285

580

900

1680

 

 

 

 

 

 

60

138

260

530

810

1520

 

 

 

 

 

 

70

125

240

490

750

1400

 

 

 

 

 

 

80

118

220

460

690

1300

 

 

 

 

 

 

90

110

205

430

650

1220

100

103

195

400

620

1150

Du Code national du gaz carburant Partie 10 Tableau 10-2

Maximum Capacity of Pipe in Thousands of BTU/hr of Undiluted L.P. Gas at 11” W.C.

(chute de pression de 13 mm (0,5 po)

à la colonne d’eau)

Longeur de

Diamètre extérieur

conduit pieds

 

 

 

3/4”

1”

1-1/2”

 

10

608

1146

3525

20

418

788

2423

 

 

 

 

30

336

632

1946

 

 

 

 

40

287

541

1665

 

 

 

 

50

255

480

1476

 

 

 

 

60

231

435

1337

70

215

404

1241

80

198

372

1144

 

 

 

 

90

187

351

1079

 

 

 

 

100

175

330

1014

 

 

 

 

Du Code national du gaz carburant Partie 10 Tableau 10-15

35

Page 39
Image 39
Blodgett RE Series manual Branchement de Gaz, Conduit DE GAZ, Exemple, Longeur Dimensions nominales De conduit Pieds

RE Series specifications

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