Installation Manual

Rinnai Tankless Rack System (TRS) Installation Manual 37
Vent
Opons
Vent Material Diameter
Max.
Units
Maximum
Vent Length
Exhaust Intake Header Vent
Common Vent
Polypropylene
or
Schedule 40
PVC/CPVC
Polypropylene
or
Schedule 40
PVC/CPVC
3 in. 2 65 FT
4 in. 4
1-3 Units: 150 FT
4 Units: 65 FT
4 in. 6 in. 7
1-6 Units: 150 FT
7 Units: 70 FT
6 in. 8 150 FT
Concentric Pipe
Polypropylene
Schedule 40
PVC
5 in.
1
150 FT
4 in. 65 FT
Twin Pipe
Polypropylene
3
or
Schedule 40
PVC/CPVC
Schedule 40
PVC/CPVC
3 in.
1
150 FT
2 in. 65 FT
3
Twin Pipe Polypropylene venng is provided by Centrotherm through their own distribuon network.
Vent Opons for CU Series, SE Series, and SE+ Series Tankless Water Heaters
The following table lists the vent opons for the CU Series, SE Series and SE+ Series tankless water heaters.
HE+ Series tankless water heaters must use concentric venng with a metal exhaust pipe. Refer to the Installaon and
Operaon Manual supplied with the HE+ Tankless Water Heater for venng opons.
Vent Opons