Plumbing Zone - Professional Plumbers Forum banner

IPC 502.2 chapter 5 water heater - rooms used as a plenum.

4.5K views 2 replies 3 participants last post by  GAN  
#1 ·
states : water heaters installed using solid, liquid, or gas fuel shall not be installed in a room containing air-handling machinery where such room is used as a plenum.
Does this mean that you just cant install a water heater in a room with an air-handler at all when the room is used as a plenum to fire the water heater, or does it mean not to install a gas water heater with an air handler in a room where the room is used as a plenum when the air handler uses a non ducted return? someone please explain this to me.
 
#3 ·
Where the room itself is "the open plenum", the negative air pressure may caused CO to be drawn back into the air handler causing CO poisoning.
 
  • Like
Reactions: Garyp