Bradford White Combi2 TTW C-DW2-TW50T10FBN, Руководство пользователя

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13
Venting (Part I) continued-
Table 2 list s t he vent ing dist ances allow ed w it h 4’’
(10.2 cm) diamet er
vent pipe. When venting with 4’’ (10.2 cm) vent pipe , use a 4’’ (10.2 cm)
t o 3’’ (7.6 cm) reducer t o exit t hrough t he building w all w it h 3’’ (7.6 cm)
vent pipe. Use t he 3’’ (7.6 cm) vent t erminal supplied w it h t he w at er
heat er t o t erminat e on t he out side of t he building. If t he lengt h of 3’’ (7.6
cm) vent pipe needed t o go t hrough t he w all is great er t han 14’’ (35.5
cm) , use 4’’ (10.2 cm) t o go t hrough t he w all and reduce t o 3’’ (7.6 cm)
vent pipe immediat ely af t er exit ing t he out side w all. Ref er t o t he vent ing
illust rat ions on t he f ollow ing pages. Make sure t he vent pipe t erminal
elbow f it t ing is at least 1’’
(2.5 cm) aw ay f rom t he edge of t he w all.
TABLE 1 - VENT CONNECTOR LENGTHS
FOR 3’’ (7.6 cm) DIAMETER VENT PIPE
Terminating # of Elbows Maximum straight
Length ft (m)
Minimum
straight
Length
ft (m)
48, 65 gal.
Through t he Wall
1 55 (16.8)
2 (.6)
Through t he Wall 2 50 (15.2) 2 (.6)
Through t he Wall 3 45 (13.7) 2 (.6)
Through t he Wall
4 40 (12.2)
2 (.6)
Through t he Roof 0 60 (18.3) 7 (2.1)
Through t he Roof
1 55 (16.8)
7 (2.1)
Through t he Roof
2 50 (15.2)
7 (2.1)
Through t he Roof 3 45 (13.7) 7 (2.1)
TABLE 2 -VENT CONNECTOR LENGTHS
FOR 4’’ (10.2 cm) DIAMETER VENT PIPE
Terminating
# of 90
°
Elbows (excl.
vent term.)
Maximum straight
Length ft (m)
Min
straight
Length
ft (m)
48, 65 gal.
Through t he Wall
1 175 (53.3)
10 (3.1)
Through t he Wall
2 170 (51.8)
10 (3.1)
Through t he Wall
3 165 (50.3)
10 (3.1)
Through t he Wall 4 160 (48.8) 10 (3.1)
Through t he Wall 5 155 (47.2) 10 (3.1)
Through t he Roof
0 180 (54.9)
15 (4.6)
Through t he Roof 1 175 (53.3) 15 (4.6)
Through t he Roof 2 170 (51.8) 15 (4.6)
Through t he Roof
3 165 (50.3)
15 (4.6)
Through t he Roof
4 160 (48.8)
15 (4.6)