Installation ManualNORITZ AMERICACORPORATIONTANKLESS GAS WATER HEATERNC380-SV-ASME(Indoor/Outdoor Installation)Potential dangers from accidents during installation and use are divided into the following threecategories. Closely observe these warnings, they are critical to your safety.DANGERWARNINGCAUTIONDANGER indicates an imminently hazardous situation which,if not avoided, will result in death or serious injury.WARNING indicates a potentially hazardous situation which,if not avoided, could result in death or serious injury.CAUTION indicates a potentially hazardous situation which,if not avoided, may result in minor or moderate injury.WARNING: If the information in this manual is not followed exactly, a fire or explosion may resultcausing property damage, personal injury or death.DisconnectPowerProhibitedGroundBe sure to doCAUTIONRequests to Installers In order to use the water heater safely, read this installation manual carefully, and follow theinstallation instructions. Failures and damage caused by erroneous work or work not as instructed in this manual are notcovered by the warranty. Check that the installation was done properly in accordance with this Installation Manual uponcompletion. After completing installation, please either place this Installation Manual in a plastic pouch andattach it to the side of the water heater (or the inside of the pipe cover or recess box if applicable),or hand it to the customer to retain for future reference. Also, be sure to fill in all of the requireditems on the warranty and to hand the warranty to the customer along with the Owner's Guide.CERTIFIEDInstallation must conform with local codes, or in the absenceof local codes, the National Fuel Gas Code, ANSI Z223.1/NFPA 54- latest edition and/or CSA B149.1, Natural Gasand Propane Installation Code (NSCNGPIC).RLow NOxApproved bySCAQMDSBA8381Rev. 09/09Noritz America reserves the right to discontinue, or changeat any time, the designs and/or specifications of its productswithout notice.Accepted For UseCity of New YorkDepartment of BuildingsMEA 19-03-E*SBA8381*

1. Included AccessoriesPartShapeThe following accessories are included with the unit.Check for any missing items before starting installation.Q’tyPartTapping Screw5Owner's Guide, Warranty,Installation Manual(this document)1eachRemote Controller(See p. 21)1Remote ControllerCord (10ft)1Heat ExchangerInspection report12. Optional AccessoriesPartSystem ControllerShapeQ’tyRemote ControllerOutdoorJunction Box2Q’tyThe accessories listed below are notincluded with the units, but may be necessaryfor installation.PartShapeQ’tyOutdoor Vent Cap(VC-132)1Quick Connect Cord11Remote ControllerCord (26ft)11Pipe Cover(PC-4S-SUS)11Isolation Valves(includes pressurerelief valve)Shape

3. Quick Connect Multi System Installation The Quick Connect Multi System allows the installation of two units together utilizing only the QuickConnect Cord.The Quick Connect Cord is 6 ft. long. Install the units 6-17" apart from each other to ensure thecord will be able to reach between the units. (See Typical Plumbing diagram).(If the distance between the two units is too great, not only will the cord not be able to reach,but the water temperature may also become unstable because of the difference in pipe lengthbetween the two units).* When connecting two units, use only asingle remote controller.System DiagramQuick ConnectCordCordConnectorCordConnectorTerminal BlockRemote ControllerNote: Connect the remotecontroller to only oneof the units.Remote Controller CordGas Supply PipingGCold Water SupplyHot WaterTypical PlumbingDistance at center: 25-36 in.Distance on sides6-17 in.UnionUnionQuick ConnectCordMake this distance as short as possible.* The hot water temperature willbecome unstable as the pipelength increases.PressureReliefValveUnionShutoffValveGas ValveShutoff ValveShutoffValveHot WaterCold WaterLeave enough clearance around the plumbingto apply insulation. It will be necessary to addbends to the piping to ensure that thisclearance is available.Size the piping to allow for the maximumflow rates of the units. Insulate the hot water piping to prevent heat loss. Insulate and apply heating materials to the coldwater supply piping to prevent heat loss and freezing of pipes when exposed to excessively coldtemperatures.3

4. Before InstallationDANGERCheckup Check the fixing brackets and vent pipe yearly for damage or wear. Replace if necessary.WARNINGCheck the Gas Check that the rating plate indicates thecorrect type of gas. Check that the gas supply line is sized for380,000 Btuh for this 689210.52.04Check 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. Do not use a solar pre-heater with the quick-connect multi-system.CAUTIONDo 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.4

5. Choosing Installation Site* Locate the appliance in an area where leakage from the unit or connections will not result in damageto the area adjacent to the appliance or to the lower floors of the structure. When such locationscannot be avoided, it is recommended that a suitable drain pan, adequately drained, be installedunder the appliance. The pan must not restrict combustion air flow.DANGER Install the exhaust vent so that there are no obstacles around the termination and so thatexhaust can't accumulate. Do not enclose the termination with corrugated metal or othermaterials.WARNING Avoid places where fires are common, such as those where gasoline,benzene and adhesives are handled, or places in which corrosive gases(ammonia, chlorine, sulfur, ethylene compounds, acids) are present.Using the incorrect voltage may result in fire or cracking.Prohibited Avoid installation in places where dust or debris will accumulate.Dust may block the air-supply opening, causing the performance of thedevice fan to drop and incomplete combustion to occur as a result. Avoid installation in places where special chemical agents(e.g., hair spray or spray detergent) are used.Ignition failures and malfunction may occur as a result. Carbon Monoxide Poisoning Hazard. Do not install this water heater in amobile home, recreation vehicle or on a boat.CAUTION Install the water heater in a location where it is free from obstacles and stagnant air. Consult with the customer concerning the location of installation. Do not install the water heater near staircases or emergency exits. Do not install the water heater where the exhaust will blow on outer wallsor material not resistant to heat. Also consider the surrounding trees andanimals.The heat and moisture from the water heater may cause discoloration ofwalls and resinous materials, or corrosion of aluminum materials. Do not locate the vent termination directed towards a window or any otherstructure which has glass or wired glass facing the termination.5

CAUTION Avoid installation above gas ranges or stoves. Avoid installation between the kitchen fan and stove. If oilyfumes or a large amount of steam are present in the installationlocation, take measures to prevent the fumes and steam fromentering in the equipment.Prohibited Install in a location where the exhaust gas flow will not beaffected by fans or range hoods. Take care that noise and exhaust gas will not affect neighbors.Avoid installation on common walls as the unit will make someoperational noises while it is running.Be sure to do Make sure that the location allows installation of the exhaustvent as specified. For outdoor installation, use the outdoor vent cap.If it is necessary to vent above the roof line in an outdoor installation, use high temperature sealant around the flue collar forrain protection.Prohibited Avoid installation where the unit will be exposed to excessivewinds. Before installing, make sure that the vent termination (or the ventcap in an outdoor installation) will have the proper clearancesaccording to the National Fuel Gas Code (ANSI Z223.1).State of California: The water heater must be braced, anchored or strapped to avoid moving during anearthquake. Contact local utilities for code requirements in your area or call: 1-866-766-7489 and requestinstructions.The Commonwealth of Massachusetts: The water heater can be used for hot water only and not in acombination of domestic and space heating.For Venting Manufacturers Requirements, see websites or phone numbers listed below:Noritz

6. Installation ClearancesWARNINGBefore installing, check for the following:Install in accordance with relevant building and mechanical codes, as well as any local, state ornational regulations, or in the absence of local and state codes, to the National Fuel Gas Code ANSIZ223.1/NFPA 54 – latest edition. In Canada, see NSCNGPIC for detailed requirements.Required ClearancesFrom HeaterItemCheckIllustration Maintain the following clearance fromboth combustible and non-combustiblematerials.12" or more(Indoor)36" or more(Outdoor)4" or more(Indoor)24" or more(Outdoor)6" or more(Indoor)Cooking Equipment24" or more(Outdoor) If the unit will be installed in the vicinity of apermanent kitchen range or stove that hasthe possibility of generating steam thatcontains fats or oils, use a dividing plate orother measure to ensure that the unit is notexposed to air containing such impurities.* The dividing plate should be of noncombustible material of a width greater than thewater heater.Exhaust hoodDividing plateWaterheaterRange If possible, leave 8" or more on eitherside of the unit to facilitate inspection.Securing of space forrepair/inspection3" or more If possible, leave 24" or more in front ofthe unit to facilitate maintenanceand service if necessary. If possible, leave 3" or more above andbelow the vent pipe to facilitate inspection and repair if necessary3" or more8" ormore8" ormore24" ormore(unit: inch)7

Clearance Requirements from Vent Terminations to Building Openings* 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 NSCNGPIC.Vent TerminalAir Supply InletClearanceA B C D E F G H I J K L M Above grade, veranda, porch, deck,or balconyArea Where Terminalis Not PermittedIndoor Installation(See p.9)Outdoor Installation(See p.9)12" (12")12" (12")4' below or to the side ofWindow or door that may be opened opening, or 1' above opening12" (36")(36")Permanently closed window**Vertical clearance to ventilated soffitlocated above the terminal within a**horizontal distance of 2 feet from thecenter of the terminalUnventilated soffit**Outside corner**Inside corner**Each side of center line extended3' within a height 15' above 3' within a height 15' aboveabove meter/regulator assemblymeter/regulator assemblymeter/regulator assemblyService regulator vent outlet3'3'4' below or to the side ofNonmechanical air supply inlet or12" (36")combustion air inlet to any otheropening, or 1' above openingappliance(36")Mechanical air supply inlet3' above if within 10' (6')3' above if within 10' (6')Above paved sidewalk or paved(7' ***)(7' ***)driveway located on public propertyUnder veranda, porch, deck, or* (12"- Canada Only****)* (12"- Canada Only****)balcony() indicates clearances required in Canada*Maintain clearances in accordance with local installation codes and the requirements of the gas supplier***A vent shall not terminate directly above a sidewalk or paved driveway that is located between twosingle family dwellings and serves both dwellings.****Permitted only if veranda,porch,deck,or balcony is fully open on a minimum of two sides beneath the floor.8

Clearance Requirements from Vent Terminations to Building Openings* 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 NSCNGPIC.Vent Clearances When Heater is Installed Outdoors With a Vent CapVent Clearances When Heater is Installed IndoorsMaintain the following clearances to anyopening in any building:Illustration 4' below, 4' horizontally from, or 1' aboveany door, operable window, or gravity airinlet into any building.3' above any forced air inlet within 10'.4'4'1'3' 1' below, 1' horizontally from, or 1' aboveany door, operable window, or gravity airinlet into any building.3' above any forced air inlet within 10'. For outdoor installation, use the outdoorvent cap.If it is necessary to vent above the roof linein an outdoor installation, also use the baseof the vent cap for rain protection.1'1'1'3'(Noritz vent cap)* For Installations in Canada, clearances are as follows: To windows, doors, & gravity air inlets: 36".To forced air inlets: 6'. These clearance requirements hold true for all of the above situations: Indoor,Outdoor w/vent cap.9

7. InstallationSecuring to the wallBe sure to doItem The weight of the device will be applied to the wall. If the strength of the wall is not sufficient, reinforcement must be done to prevent the transfer of vibration. Do not drop or apply unnecessary force to the device when installing. Internal parts maybe damaged and may become highly dangerous. Install the unit on a vertical wall and ensure that it is level.CheckLocating Screw HolesCAUTION When installing with bare hands, take caution tonot inflict injury. Be careful