Rinnai CU199i - Page 37

Rinnai Tankless Water Heater Installaon and Operaon Manual 37
2 in. or 3 in.
Schedule 40
PVC/CPVC
Snorkel
Terminaon
Conguraon
2 in. or 3 in.
Schedule 40
PVC/CPVC
Standard
Upside Down
"U" Vercal
Terminaon
Conguraon
2 in. or 3 in.
Schedule 40
PVC/CPVC
Elbow or Tee
Side Wall
Terminaon
Conguraon
2 in. or 3 in.
Schedule 40
PVC/CPVC
Tee Vercal
Terminaon
Conguraon
Non-Direct Vent (Room Air) Example Vent Applicaons
Non-Direct Vent (Room Air) Maximum Vent Length
Non-Direct Vent (Room Air)
2
Room Air Maximum Equivalent Length Table
Vent Sizes 2 in. (51 mm) 3 in. (76 mm)
Vent Lengths 65  (20 m) 150  (46 m)
• 45° elbow is equivalent to 3  (1 m)
• 90° elbow is equivalent to 6  (2 m)
Slope horizontal exhaust 1/4 in. per foot towards the water heater.