IBC VX 110 User Manual

Intake/Exhaust
VX 110 VX 150 VX 199
2-inch Stainless
Sidewall
Terminal (P-256)
No allowance required Not permitted Not permitted
3-inch Stainless
Sidewall
Terminal -
exhaust vent (P-
257)
Allow 20 feet
3-inch Stainless
Sidewall
Terminal - air
intake (P-257)
No allowance required
Flexible PPs 3-
inch Flexible pipe
Limited to 45 feet
(maximum)
Limited to 45 feet
(maximum)
Limited to 30 feet
(maximum)
Allow 1.2 x actual length
(e.g., 10 feet of 3-inch
flexible pipe x 1.2 = 12
feet of rigid pipe)
Allow 2 x actual length
(e.g., 10 feet of 3-inch
flexible pipe x 2 = 20
feet of rigid pipe)
Allow 3.3 x actual length
(e.g., 10 feet of 3-inch
flexible pipe x 3.3 = 33
feet of rigid pipe)
Table 4 Maximum air intake pipe and maximum exhaust vent length
Notes
Unused intake travel cannot be added to the exhaust. Unequal intake and exhaust piping
is allowed.
Support should be provided for intake and vent piping, particularly for horizontal runs
(follow local code).
Example of equivalent length calculations for a VX 110:
A VX 110 can be sited up to 100 feet (actual vent length allowance)from the vent termination
using 2-inch pipe, or up to 240 feet using 3-inch pipe.
For 6 x 90º elbows, the maximum lineal (straight) length of pipe allowed using 2-inch pipe is
52 feet (100’ – (6 x 8' = 48) = 52'). The same boiler using 3-inch pipe can have up to 192 feet
(240' – (6 x 8' = 48) = 192').
For 3-inch flexible PPS pipe, up to 45 linear feet is allowed in vertical orientation (> 45 °). The
equivalent length of 3-inch flexible PPS pipe should be calculated using a multiple of 1.2
(e.g., 45 'x 1.2 = 54').
25
3.7.4 Direct vent

IBC VX 110 Specifications

General

Brand	IBC
Model	VX 110
Category	Boiler
Language	English