Installation Guide 2” & 3” PVC Concentric Termination Model: PVC-2CT & PVC-3CT WARNING: If the Information in this manual is not followed exactly, a fire, explosion or carbon monoxide poisoning may result causing property damage, personal injury or death. Parts Shape Quantity PVC Concentric Termination 1 Bird Screen 1 Installation Manual 1 Rev.
This manual covers the installation of the Noritz 2” & 3” PVC Concentric Vent Termination Model name PVC-2CT & PVC-3CT for all Noritz condensing tankless water heaters that utilities schedule 40 PVC for venting. Read these instructions completely before attempting installation.
Special Venting Requirements for Installations in Canada Installation in Canada must conform to the requirements of CSA B149.1 code. Vent systems must be composed of pipe, fittings, cements, and primers listed to ULC S636. This concentric termination kit has been certified to ULC S636 for use with those IPEX PVC vent components which have been certified to this standard.
* All clearance requirements are in accordance with ANSI Z21.10.3 and the National Fuel Gas Code, ANSI Z223.1 and in Canada, in accordance with Natural Gas and Propane Installation Code CSA B149.1. 1 In accordance with the current CSA B149.1 Natural Gas and Propane Installation Code 2 In accordance with the current ANSI Z223.
Concentric Termination Kit Assembly 1. Once the proper location has been determined, cut a hole in the roof or wall to accommodate the outer pipe. The size of the cut hole should be 1/2" larger than the "C" (outer pipe diameter). See Table 2 for reference. 2. Solvent cement the inner pipe (Exhaust) to the concentric Wye fitting. See Figure B for reference. 3. Solvent cement the outer pipe (Air Intake) to the concentric Wye fitting. See Figure B for reference. 4.
Mechanically Fastened Rain Cap The Rain Cap must be installed with field supplied Stainless Steel bolt and lock nut, and in accordance with the instructions and diagram in Figure A. 1. Locate the drill location dimple (see Figure A 5) on the outside of the rain cap. 2. At location 5 in Figure A, drill through the cap and the inner pipe wall. Ensure that the path of the hole is perpendicular to the inner pipe NOT the outside of the cap. Drill a 3/16" hole. 3.
Installation / Procedure 1. Kits must be securely fastened to structure. 2. Straps are field supplied. Use straps, clamps or equivalent that will not score or damage the pipe. Expansion and contraction should be addressed between appliance and termination point. 3. All penetrations must be sealed according to local building codes. Caulking for side wall terminations and flashing for roof penetrations are typical. Use only PVC/CPVC compatible sealing material. 4.
PVC Concentric Termination The concentric termination may be shortened, but not lengthened from its original factory supplied length. 2"(50mm) or 3" (75mm) PVC or CPVC pipe may be used with the concentric termination. Maintain the same vent pipe diameter from the water heater flue to the termination. Do not exceed the maximum vent lengths according to the unit model Installation Manual.
Figure F: Example of Vertical Termination Note: Figure F Increaser coupling are for the following models EZ111DV (GQ-C3259WX-FF US), EZ98DV (GQC2859WX-FF US), and NCC199CDV (GQ-C3259WZ-FF US). Other models might have 3” PVC flue collars, contact Noritz America at 866-766-7489 for additional questions.
