Rinnai RU98e Installation And Operation Manual page 33

Certified PVC/CPVC Vent Termination Options (continued)
To prevent possibility of condensate freeze-up, do not
install vent kits one above the other. Once the vent
terminal location has been determined, make holes
through the exterior wall to accommodate the vent pipes.
Vent pipes must exit exterior wall horizontally only.
Pitched Roof Termination Clearances:
Exhaust Vent
Combustion Air
12" above
roof or
anticipated
Vertical Termination of U-Vent and Combustion Air
Pipe on a Pitched Roof
DO NOT use lubricant between two PVC/CPVC components.
Refer to cement manufacturer instruction for specific
instructions and handling.
Basic Instructions for Cementing Joints:
1. Cut pipe end square; smooth out jagged edges and
burrs. Chamfer end of pipe; then clean fitting socket
and pipe joint area of all dirt, grease, or moisture.
2. After checking pipe and socket for proper fit, wipe
socket and pipe with cleaner-primer. Apply a
liberal coat of primer to inside surface of socket and
outside of pipe.
NOTE
12" min
12" min
NOTE
3. Apply a thin coat of cement evenly in the socket.
Quickly apply a heavy coat of cement to the pipe and
insert pipe into fitting with a slight twisting motion
until it bottoms out.
4. Hold the pipe fitting for 30 seconds to prevent the
tapered socket from pushing the pipe out of the fitting.
5. Wipe all excess cement from the joint with a rag. Allow
15 minutes before handling. Cure time will vary
according to fit, temperature, and Humidity
KB Series Manual 33