Noritz EcoTOUGH NRC661A-DV Installation Manual

Also see for EcoTOUGH NRC661A-DV: Owner's guide Owner's guide Owner's guide Replacement

13WARNINGCARBON MONOXIDE POISONINGFailure to properly seal the vent system couldcause flue products to enter the living space.Item Material United States CanadaExhaust Vent/Air IntakeSchedule 40 PVC ANSI/ASTM D1785UCSA B137.3CSA B181.2CSA B137.3LC S636 CertifiedMaterials OnlyPVC-DWV ANSI/ASTM D2665Schedule 40 CPVC ANSI/ASTM F441Pipe Cement/Primer PVC ANSI/ASTM D2564CPVC ANSI/ASTM F493Note: Do not use cellular core PVC/CPVC or RadelPVC/CPVC Installation Instructions• Use only solid PVC or CPVC schedule 40 pipe. Cellular foam core piping is not allowed.••In Canada, plastic vent systems must be certified to ULC S636. The components of the certifiedvent system must not be interchanged with other vent systems or unlisted pipe/fittings.• In Canada, specified primers and glues of the ULC S636 certified vent system must be from asingle system manufacturer and not intermixed with other system manufacturer’s vent systemparts.• Follow all general venting guidelines as outlined on this page.• The pipe shall be installed so that the first 3’ (0.9m) of pipe from the appliance flue outlet is readilyaccessible for visual inspection.• When preparing and assembling the pipe, follow instructions as provided by the pipemanufacturer. In general, the following practices must be observed:o Squarely cut all pieces of pipe.o Remove all burs and debris from joints and fittings.o All joints must be properly cleaned, primed, and cemented. Use only cement and primerapproved for use with the pipe material as outlined in the above table.•• PVC or CPVC pipe has been approved for use on this appliance with zero clearance to combustibles.All piping must be fully supported. Use pipe hangers at a minimum of 3’ (0.9m) intervals. Do not usethe water heater to support the vent piping.3" schedule 80 pipe may also be used on this appliance, however the BTUH input of theappliance will be reduced by up to 5%.Venting With PVC or CPVCThis appliance can be vented with non cellular core plastic pipe materials as specified in the below table.Vent installations in Canada which utilize plastic vent systems must comply with ULC S636.•• A bird screen must be installed on the vent terminations to prevent debris or animals from entering thepiping. These screens are not supplied with the water heater and must be purchased separately(part #VT3-PVCS, use part PVC or CPVC).When attaching the piping to the water heater, use the appropriate primer and cement to ensure aproper seal.R