Noritz EcoTOUGH NRC661A-DV Installation Manual

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

3Check the Gas• Check that the rating plate indicates thecorrect type of gas.• Check that the gas supply line is sized for157,000 Btuh for NRC711-DV series.(120,000 Btuh for NRC661A-DV series.)Check the Power• The power supply required is 120VAC, at 60Hz.Using the incorrect voltage may result in fire or electric shock.Use Extreme Caution if Using With a Solar Pre-Heater• Using this unit with a solar pre-heater can lead to unpredictable output temperatures andpossibly scalding. If absolutely necessary, use mixing valves to ensure output temperatures donot get to scalding levels.Precautions for Mobile Home Installation• Verify that the gas supply type matches the gas type listed on the rating plate. If a gas conversionmust be done, follow the instructions listed in the manual.• If this product will be installed indoors, usage of the SV conversion kit (SV-CK-3) is prohibited.Make sure to follow all clearance and venting requirements outlined in this manual.3. Before InstallationCheckup• Check the fixing brackets and vent pipe yearly for damage or wear. Replace if necessary.DANGERDo Not Use Equipment for Purposes Other Than Those Specified• Do not use for other than increasing the temperature of the water supply, as unexpected accidentsmay occur as a result.Check Water Supply Quality• If the water supply is in excess of 12 grains per gallon (200 mg/L) of hardness, acidic or otherwiseimpure, treat the water with approved methods in order to ensure full warranty coverage.WARNINGCAUTIONPrecautions on Vent Pipe Replacement• The vent system will almost certainly need to be replaced when this appliance is being installed.Only use vent materials that are specified in this Installation Manual for use on this appliance. Refer to the"Vent Pipe Installation" section for details. If PVC, CPVC, or Category IV listed pipe is already installed,check for punctures, cracks, or blockages and consult with the vent pipe manufacturer before reusing.Improper venting may result in fires, property damage or exposure to Carbon Monoxide.Snow Precaution• If this product will be installed in an area where snow is known to accumulate, protect the venttermination from blockage by snow drifts or damage from snow falling off of roofs.