Water Heater / CPVC

[jhagarty (Joseph Hagarty, CMI)]

I know this is wrong.
Does anyone know the specific code requirement for not connecting CPVC directly to a gas water heater?
Thanks…

[bgraham (Bruce Graham, III, CMI)]

Most be a northern thing, works in florida

[mlarson (Michael Larson, WI Lic. # 1672-106)]

On gas water heaters there
should be at least 6 inches of clearance between the
exhaust flue and any CPVC piping (photo K). Twelve inch
long metal nipples or appliance connectors should
be connected directly to the heater so that the CPVC
tubing cannot be damaged by the build-up of excessive
radiant heat from the flue.

http://www.nibco.com/assets/CPVCMAN2.pdf

[jfunderburk (Joe Funderburk, CMI)]

1" clearance from b-vent by manufacturer. Michael nailed it best.

[rstrand (Rick Strand)]

@jfunderburk

1" clearance from b-vent by manufacturer. Michael nailed it best.

True but the vast majority of water heaters are c vent which require 6" min. Plastic piping should not be connected to water heaters.

[bgraham (Bruce Graham, III, CMI)]

Good info to have, just never see it in the field, maybe I should send a copy to the local code inspectors:D

[kwood (KEVIN WOOD, CMI)]

At least according to Ontario or Canada.