Columbia CSVB-3 Operations Instructions download pdf (Page 13)

Horizontal (Category III) venting systems must be installed

in accordance with these instructions.

Maximum Horizontal Vent Length For Stainless Steel Vent

Pipe - 30’ Plus One 90º Elbow Plus Vent Terminal.

Minimum Horizontal Vent Length - 2’ Plus One 90º Elbow

Vent Termination.

Additional elbows are equivalent to 6 feet of straight pipe

for 4” diameter 90° elbow or 3 feet of straight pipe for 3”

diameter 90° elbow. 2, 3, 4, 5, Section Boilers use 3” vent

pipe; for 6, 7 Section Boilers use 4” vent pipe.

CHOICE OF VENT PIPE MATERIAL

• U. L. Listed Z-Flex Z-Vent Stainless Steel Vent Pipe.

• U. L. Listed Heat-Fab Saf-T-Vent Stainless Steel Vent

Pipe.

• U. L. Listed Flex-L Star-34 Stainless Steel Vent Pipe.

• U. L. Listed ProTech Systems FasNSeal Stainless Steel

Vent Pipe.

INDUCED DRAFT HIGH EFFICIENCY BOILERS

HORIZONTAL VENTING INSTRUCTIONS

Figure 8 - Induced Draft High Efﬁ ciency Boilers

(21mm/m)

(300mm

)

(21mm/m)

(300mm

)

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 ... 39 40

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Columbia CSVB-3 Operations Instructions Page 13