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SpecificationsM060SModelDimensions - w, h, dM090SM120S17 in. x 28 in. x 10 in.Weight(439 mm x 699 mm x 264 mm)64 lb (29 kg)70 lb (32 kg)Appliance TypeWall-Mounted, Gas-Fired Solo BoilerInstallation TypeIndoorIgnition SystemDirect Electronic IgnitionHeat Exchanger TypeHeat Exchanger Surface AreaiCon1iCon27.3 sq ft11.8 sq ftTemperature Setting (Min - Max)Water ContentGasConsumption(Btu/h)MinimumWater SupplyPressureCentral HeatingPressure Relief ValveMaximum68 F - 185 F (20 C - 85 C)1 Gallon1 Gallon3.8 Liters3.8 LitersNG: 17,000LP: 31,50060,00090,000NormalElectrical DataMaximum: 45 PSI30 PSIUPER 15-7839 dB42 dB48 dB54 dB155 W177 W164 W191 W1.67 Amps1.97 AmpsStandbyMax Current3.5 W1.62 Amps1.8 AmpsFuseGasSupply Pressure1.4 Gallons1.4 Gallons5.2 Liters5.2 LitersNG: 23,500LP: 73,500120,000160,000Minimum: 14 PSIPump ModelSound LevelM160S5 AmpsNatural Gas3.0 in. - 10.5 in. W.C.Propane8.0 in. - 13.5 in. W.C.Electric ConnectionsAC 120 Volts, 60Hz.Energy Star QualifiedRecognized as the Most Efficient of ENERGY STAR 2018CertificationsANSI Z21.13, CSA 4.91Minimum flow may vary slightly depending on the temperature setting and the inlet water temperature. Minimum activation flow is 0.4 GPM (1.5 L/min).2The maximum gas supply pressure must not exceed the value specified by the manufacturer.Rinnai products are continually being updated and improved; therefore, specifications are subject to change without prior notice.Rinnai M-Series Condensing Solo Boiler Installation and Operation Manual7

DimensionsMeasurements: in. (mm)FrontSideSupply ConnectionsGasCentral HeatingSupply8Central HeatingReturnRinnai M-Series Condensing Solo Boiler Installation and Operation Manual

AccessoriesThe following optional accessories are available for the Rinnai M-Series Condensing Boiler.For questions, or to purchase an accessory, contact your local Rinnai dealer/distributor or call Rinnai Customer Care at1-800-621-9419.CONDENSATE NEUTRALIZERNeutralizes the condensategenerated by the boiler.BOILER TOOLKITSCALECUTTERFilters and reduces the amount ofscale entering the boiler allowingfor greater boiler longevity.SCALECUTTER REFILL CARTRIDGERefill cartridge for the ScaleCutterfilter assembly.CLOSELY SPACED TEE KITSet of specific tools recommendedfor boiler service.Rinnai M-Series Condensing Solo Boiler Installation and Operation Manual9

How to Remove the Front PanelIMPORTANTDo not operate the boiler without the front panel installed. The front panel shouldonly be removed for service/maintenance or replacing internal components.You Will Need: 1Philips head screwdriverUsing a Philips head screwdriver, removethe 2 screws from the top of the boiler.TIPBe careful not to lose the screws. You’ll needthem when reinstalling the front cover.2Lift the tab slightly above the peg.3To remove, carefully lift the panel upand off to release it from the boiler.10Rinnai M-Series Condensing Solo Boiler Installation and Operation Manual

4 InstallationTopics in this section Installation OverviewInstallation GuidelinesUnpack the BoilerChoose an Installation LocationMount the Boiler to the WallTHIS SECTION IS INTENDED FOR THE INSTALLERInstaller qualifications: A trained and qualified professional must install the appliance, inspect it, and leak test theboiler before use. The warranty will be voided due to any improper installation. The trained and qualified professionalshould have skills such as: Gas sizing; Connecting gas lines, water lines, valves, and electricity; Knowledge of applicablenational, state, and local codes; Installing venting through a wall or roof; and training in installation of condensingboilers. Training for Rinnai Condensing Boilers is accessible online at www.trainingevents.rinnai.us.Installation OverviewBelow is an overview of the installation process. Detailed information about each step is provided in the followingpages.1Read and Understand theInstallation Guidelines2Unpack the Boiler andVerify the Contents3Choose an InstallationLocation4Mount the Boilerto the WallRinnai M-Series Condensing Solo Boiler Installation and Operation ManualConsider water quality,environment, andclearances11

Installation Guidelines This boiler is certified for installation in residentialand commercial applications. This boiler is suitable for combination water heating(through an indirect tank) and central heating. The installation must conform with local codes or, inthe absence of local codes, with the National FuelGas Code, ANSI Z223.1/NFPA 54, or the Natural Gasand Propane Installation Code, CSA B149.1. Ifinstalled in a manufactured home, the installationmust conform with the Manufactured HomeConstruction and Safety Standard, Title 24 CFR, Part3280 and/or CAN/SCA Z240 MH Series, MobileHomes. The appliance, when installed, must be electricallygrounded in accordance with local codes or, in theabsence of local codes, with the National ElectricalCode, ANSI/NFPA 70, or the Canadian ElectricalCode, CSA C22.1. The appliance and its main gas valve must bedisconnected from the gas supply piping systemduring any pressure testing of that system at testpressures in excess of 1/2 psi (3.5 kPa) (13.84 inW.C.). For system testing at pressures less than orequal to 1/2 psi (3.5 kPa) (13.84 in W.C.) theappliance must be isolated from the gas supplypiping by closing its individual manual shutoff valve.DO NOTDO NOT install the boiler in an area wherewater leakage of the unit or connections willresult in damage to the area adjacent to theappliance or to lower floors of the structure.When such locations cannot be avoided, it isrequired that a suitable drain pan, adequatelydrained, be installed under the boiler. The panmust not restrict combustion air flow.DO NOT install the boiler in an area withnegative air pressure.DO NOT obstruct the flow of combustion andventilation air.DO NOT use substitute parts that are notauthorized for this appliance.DO NOT install the boiler on carpeting. You must follow the installation instructions andthose in the Venting section for adequatecombustion air and exhaust. If the boiler is installed in a closed water supplysystem, such as one having a backflow preventer inthe cold water supply line, means shall be providedto control thermal expansion. Contact the watersupplier or local plumbing inspector on how tocontrol thermal expansion. Should overheating occur or the gas supply fail toshut off, turn off the manual gas control valve to theappliance. Combustion air must be free of chemicals, such aschlorine or bleach, that produce fumes. Thesefumes can damage components and reduce the lifeof your appliance.12Rinnai M-Series Condensing Solo Boiler Installation and Operation Manual

Unpack the BoilerItems IncludedWhat You’ll NeedCarefully unpack your boiler system and verify thefollowing contents are included.Gather the recommended tools and parts beforestarting installation.If any items are damaged or missing, contact your localdealer/distributor or call Rinnai Customer Care at 1-800621-9419. Do not attempt to use any item that appearsdamaged.Items included with boiler package:Tools Needed Standard tools for central heating, gas fittingand plumbing. Digital manometer capable of reading bothpositive and negative pressure Combustion analyzer (intended for use withcondensing boilers) Digital multimeter capable of readingmicroamps Rinnai Condensing Boiler Integrated Modulating Pump Wall Mounting Bracket Pressure Relief Valve Condensate Collector Kit pH digital meter or test strips Outdoor Reset Sensor Metric Allen wrenches (use metric only) 3 in. (80 mm) Polypropylene to 3" PVCAdapter (Qty 2) Metric Socket wrenches (use metric only) 3 in. PVC to 2 in. PVC or 2 in. (60 mm)Polypropylene adapter (Qty 2)For wall mounting bracket installation: 3 in. X 5 in. Concentric Vent Adapter Vent top with integrated 3 in. (80mm)Polypropylene Adapters NPT Adapters: 1 in. (25 mm) (Qty 2) 3/4 in. (19 mm) for Gas Supply connection Liquid Propane Field Conversion Kit Installation and Operation Manual (this manual) User Manual ISCL (Installation, Service, and Commissioning Log) Level Screws (use appropriate screws for typeof wall construction)Other Items You May Need Hand truck with fastening belt Boiler toolkit (optional accessory for boilerservice. See the Accessories section for moreinformation)WARNINGTo avoid danger of suffocation, keep plastic bagsaway from babies, small children and pets. Do notuse these bags in cribs, beds, carriages, or playpens.The bags are not a toy.Rinnai M-Series Condensing Solo Boiler Installation and Operation Manual13

Choose an InstallationLocation Unsuitable heating system water can cause theformation of scale or sludge, which affects systemefficiency. It can also cause corrosion and reducelife of the heat exchanger. Never use water that has been treated by a reverseosmosis, deionized, or distilled water to soften thewater to fill the heating system. Do not use inhibitors or other additives unlessapproved by Rinnai for that purpose. When using oxygen-permeable pipes for in-floorheating systems, you must separate the systemfrom the boiler using plate heat exchangers. Thoroughly flush the system prior to filling. Whileflushing, isolate the boiler. Do not introduce any system cleaner into the boilerloop. Flush the system thoroughly to remove allsystem cleaner before filling the boiler with water.Water Quality Guidelines Consideration of care for your boiler should includeevaluation of water quality.When freeze protection of the heating system isdesired, only use Rinnai-approved antifreezes. Theallowed maximum concentration is 50%. Reference section Approved Cleaners, Inhibitorsand Antifreezes in the Appendix for an approvedlist of system cleaners, inhibitors, and antifreezes.When choosing an installation location, you mustensure that clearances will be met and that the ventlength will be within required limits. Consider theinstallation environment, water quality, and need forfreeze protection. Requirements for the gas line, waterlines, electrical connection, and condensate disposalcan be found in their respective installation sections inthis manual.This section provides information on the importance ofwater quality to the Rinnai Condensing Boiler. Theinformation is intended to serve as general guidelinesonly and is not a complete list of water qualityguidelines. The water must be potable, free of corrosivechemicals, sand, dirt, or other contaminants. It is up to the installer to ensure the water doesnot contain corrosive chemicals or elements thatcan affect or damage the boiler. Water that contains chemicals exceeding the levelsbelow can damage the boiler.ContaminantMaximum LevelTotal HardnessUp to 200 mg/LAluminum *Up to 0.2 mg/LChlorides *Up to 250 mg/LCopper *Up to 1.0 mg/LDissolved Carbon Dioxide (CO2)Up to 15.0 mg/LIron *Up to 0.3 mg/LManganese *Up to 0.05 mg/LpH *6.5 to 8.5TDS (Total Dissolved Solids) *Up to 500 mg/LZinc *Up to mg/LIMPORTANTReplacement of components due to waterquality damage is not covered by the warranty.* Source: Part 143 National Secondary DrinkingWater Regulations14Rinnai M-Series Condensing Solo Boiler Installation and Operation Manual

EnvironmentAir surrounding the boiler, venting, and vent termination(s) is used for combustion and must be free of any compoundsthat cause corrosion of internal components. These include corrosive compounds that are found in aerosol sprays,detergents, bleaches, cleaning solvents, oil based paints/varnishes, and refrigerants. The air in beauty shops, drycleaning stores, photo processing labs, and storage areas for pool supplies often contains these compounds. The boiler,venting, and vent termination(s) should not be installed in any areas where the air may contain these corrosivecompounds.ClearancesLocationClearanceTop2 in. (51 mm)0 in. from vent componentsBottom (Ground)12 in. (305 mm)Front6 in. (152 mm)Clearance for servicing is 24 in. (610 mm) in front of boilerBack0 in.Sides (Left and Right)2 in. (51 mm)Vent0 in.TOPFRONTBOTTOMCloset Installation ClearancesTop6 in. (152 mm)0 in. from vent componentsBottom (Ground)12 in. (305 mm)Front6 in. (152 mm)Clearance for servicing is 24 in. (610 mm) in front of boilerBack0 in.Sides (Left and Right)2 in. (51 mm)Vent0 in.Installation Location ChecklistUse this checklist to ensure you have selected the correct location for the boiler. The boiler is not exposed to corrosive compounds in the air.The boiler location complies with the required clearances.The planned combustion air and exhaust termination locations meet the required clearances.The water supply does not contain chemicals or exceed total hardness that will damage the heat exchanger.A standard 3 prong 120 VAC, 60 Hz properly grounded wall outlet or other 120 VAC, 60 Hz source is available.The installation must conform with local codes or, in the absence of local codes, with the National Fuel GasCode, ANSI Z223.1/NFPA 54, or the Natural Gas and Propane Installation Code, CSA B149.1.Rinnai M-Series Condensing Solo Boiler Installation and Operation Manual15

Mount the Boiler to the WallYou Will Need 1Supplied by Installer Rinnai Condensing BoilerWall Mounting BracketHold the wall mounting bracket up againstthe wall and use a level to make sure thebracket is even.2Proper operation requires the boiler to belevel.LevelScrews for boiler and mounting bracketinstallation (use appropriate screws for type ofwall construction)Use the appropriate screws for the wallconstruction to secure the mounting bracketto the wall (use any of the screw holes in themounting bracket).LevelWall Mounting Bracket3Insert the boiler top bracket into the wall mounting bracket.Make sure the wall mounting bracket is sturdy and can hold the weight of the boiler before you fully let go.Insert the boiler top bracket into the wall mounting bracket16Assembled viewRinnai M-Series Condensing Solo Boiler Installation and Operation Manual

5 VentingTopics in this section Venting GuidelinesVenting Installation SequenceTermination ConsiderationsVenting OptionsVenting Guidelines M-Series boilers can be installed as direct vent ornon-direct vent applications. When installed as Direct Vent, refer to thefollowing section for a complete list of approvedvent manufacturers and products: Venting Options Direct Vent: Approved Vent Manufacturers andProducts. When installed as Non-Direct Vent (Room Air), thevent must be Category IV and of a type listed by anational recognized testing agency. Exhaust must be directly vented to the outside.Combustion air can be provided from outside(Direct Vent) or from room air (Non-Direct Vent). If using room air (non-direct vent) for combustion,ensure the required volume of indoor air isavailable according to the National Fuel Gas Code,ANSI Z223.1/NFPA 54. Avoid dips or sags in horizontal vent runs byinstalling supports per the vent manufacturer’sinstructions. Support horizontal vent runs every 4 ft (1.2 m) andall vertical vent runs every 6 ft (1.83 m) or as pervent manufacturer’s instructions or local coderequirements. If venting reassembly is needed, follow the stepsfor installing the venting in the followingsections. Make certain that the vent piping andseals are not damaged. Only use sealants,primers, or glues that are approved for the ventmaterial in use. Refer to the instructions of the vent systemmanufacturer for component assemblyinstructions. If the vent system is to be enclosed, it issuggested that the design of the enclosure shallpermit inspection of the vent system. The designof such enclosure shall be deemed acceptable bythe installer or the local inspector. Any issues resulting from improper ventinstallation will not be covered by warranty.WARNINGDO NOT use cellular core PVC/CPVC.DO NOT use Radel, ABS, or galvanized material tovent this appliance.DO NOT cover non-metallic vent pipe and fittingswith thermal insulation.DO NOT combine vent components fromdifferent manufacturers. Venting should be as direct as possible with aminimum number of pipe fittings.DO NOT reduce the vent diameter. Ventdiameter cannot be less than 2 in. For manufactured vent systems, vent connectionsmust be firmly pressed together so that theconnections form an air tight seal. Follow theventing manufacturer’s instructions.DO NOT connect the venting system with anexisting vent or chimney. Refer to the Schedule 40 PVC/CPVC manufacturerfor appropriate fittings, solvents or joiningmethods.DO NOT common vent with the vent pipe of anyother manufacturer’s boiler or appliance.Rinnai M-Series Co

Training in installation of condensing boilers. Training on Rinnai M-Series ondensing oilers is accessible at www.trainingevents.rinnai.us. Read all instructions in this manual before installing the boiler. The boiler must be installed according to the exact instructions in this manual. Proper installation is the responsibility of the