Rinnai REU-N2024FF-US Installation And Operation Manual Download Page 10

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Rinnai Tankless Water Heater Installation and Operation Manual

Connections (for Internal and External Water Heaters)

Pressure Relief Valve (PRV)

M33 THREAD

Bottom View of Water Heater

Measurements: in. (mm)

Summary of Contents for REU-N2024FF-US

Page 1: ...allumer d appareil Ne touchez aucun interrupteur ne pas vous servir des t l phones se trouvant dans le b timent Appelez imm diatement votre fournisseur de gaz depuis un voisin Suivez les instructions...

Page 2: ...3 8 Pressure Relieve Valve 43 3 9 Condensate 45 3 10 Connect the Gas Supply 47 3 11 Connect the Power Supply 50 3 12 Parameter Settings 51 3 13 External Pump with Circ Logic 52 3 14 Service Indicator...

Page 3: ...manual before installing the water heater The water heater must be installed according to the exact instructions in this manual Proper installation is the responsibility of the installer When install...

Page 4: ...n personal injury or death Indicates a potentially hazardous situation which if not avoided could result in minor or moderate injury It may also be used to alert against unsafe practices Safety alert...

Page 5: ...et d arr t de l admission de gaz Only trained and qualified professionals are permitted to adjust parameter settings Do not use an extension cord or adapter plug with this appliance Any alteration to...

Page 6: ...eens x2 and vent screen screws x2 for internal indoor water heaters only The vent screen prevents debris and other objects from entering the terminal One vent screen is for the intake the other is for...

Page 7: ...res and communicates with the service provider portal The Control R Wi Fi Module and MC 195T US controller are not compatible accessories and must not be installed together Recirculation Pump A pump s...

Page 8: ...PM 38 L min 9 GPM 34 L min 7 GPM 26 L min 11 GPM 42 L min 10 GPM 38 L min 9 GPM 34 L min 7 GPM 26 L min Weight 64 lb 29 kg 64 lb 29 kg 62 lb 28 kg 62 lb 28 kg 64 lb 29 kg 64 lb 29 kg 62 lb 28 kg 62 lb...

Page 9: ...door Models RU199i RU180i RU160i and RU130i Front Panel View Side Panel View External Outdoor Models RU199e RU180e RU160e and RU130e Front Panel View Side Panel View 2 6 Dimensions Vent Connection 2 i...

Page 10: ...0 Rinnai Tankless Water Heater Installation and Operation Manual Connections for Internal and External Water Heaters Pressure Relief Valve PRV M33 THREAD Bottom View of Water Heater Measurements in mm...

Page 11: ...ressures less than or equal to 1 2 psi 3 5 kPa 13 84 in W C the appliance must be isolated from the gas supply piping by closing its individual manual shutoff valve You must follow the installation in...

Page 12: ...information is intended to serve as general guidelines only and is not a complete list of water quality guidelines 3 2 Choose an Installation Location Air surrounding the water heater venting and vent...

Page 13: ...ve Loss of freeze protection may result in water damage from a burst heat exchanger or water lines The water heater may be drained manually However it is highly recommended to install the optional Dra...

Page 14: ...ounds in the air The water heater location complies with the required clearances The planned combustion air and exhaust termination locations meet the required clearances The water supply does not con...

Page 15: ...ws on far left side and 2 screws on far right side Use the appropriate screws for the wall construction to secure the mounting bracket to the wall between two studs Securely screw the top and bottom b...

Page 16: ...ake sure the water heater is straight Proper operation requires the water heater to be level Make sure the securing method is sufficient to support the weight of the water heater Refer to the water he...

Page 17: ...ems vent connections must be firmly pressed together so that the connections form an air tight seal Follow the venting manufacturer s instructions Refer to the PVC CPVC manufacturer for appropriate fi...

Page 18: ...locations near a dryer vent Avoid termination locations near commercial cooking exhaust Avoid termination locations near any air inlets You must install a vent termination at least 12 in above the gr...

Page 19: ...er and a separate exhaust header that vents directly through separate penetrations to the outside Combustion Air Exhaust Exhaust Room Air For Combustion Twin Pipe Combustion air and exhaust vent direc...

Page 20: ...29 www duravent com Royal 800 232 5690 www royalbuildingproducts com Ecco Manufacturing 877 955 4805 www eccomfg com DiversiTech 800 995 2222 www diversitech com Direct Vent Approved Vent Manufacturer...

Page 21: ...x 40 in 20 ICRT2439 2 in x 4 in Concentric Roof Termination 20 2PPS VKL VK TCL 2 in x 4 in Vertical Termination Cap Kit Concentric 20 2PPS HKL 2 in x 4 in Horizontal Termination Kit Concentric 20 190...

Page 22: ...above roof 5 196006 197009 FGV Concentric Vent Kit 3 in x 20 in 20 196106 197107 FGV Concentric Vent Kit 3 in x 32 in 20 196116 197117 FGV Concentric Vent Kit 3 in x 44 in 20 52CVKGVS6503 PVC 52CVKGV...

Page 23: ...al Termination 16 3PPS VKL VK TCL 3 in x 5 in Vertical Termination Cap Kit Concentric 20 3PPS HKL 3 in x 5 in Horizontal Termina tion Kit Concentric 20 190388 3 in x 5 in Concentric Horizontal Termina...

Page 24: ...in Pipe Termination 10 2PPS HSTL 2 in Single Horizontal Termination 6 2PPS TBL 2 in Black UV Resistant Tee 5 196984 FGV PVC Low Profile Termination Kit 5 081216 FGV PVC Wall Termination Kit 16 52SWVKG...

Page 25: ...Horizontal Termination 5 3PPS TBL 3 in Black UV Resistant Tee 6 196985 FGV PVC Low Profile Termination Kit 5 081219 FGV PVC Wall Termination Kit 16 52SWVKGVS6503 PVC Side Wall Vent Kits 5 52WTVKGVS65...

Page 26: ...64 CPVC Schedule 40 ANSI ASTM F493 PVC Vent Screens Termination Vent Screens Polyethylene 2 in Vent Screens included in carton box IPEX Part Number 196050 3 in Vent Screens IPEX Part Number 196051 Exh...

Page 27: ...non mechanical air supply inlet to building or the combustion air inlet to any other appliance 36 in 91 cm 12 in 30 cm K Clearance to a mechanical air supply inlet 6 ft 1 83 m 3 ft 91 cm above if with...

Page 28: ...ls at different levels Note 24 in 0 61 m to wall or parapet Combustion air and exhaust vent directly through a single concentric connection Hot exhaust exits through the interior tube while combustion...

Page 29: ...Vent Maximum Equivalent Length Vent Sizes 2 in X 4 in 3 in X 5 in Vent Lengths 65 ft 20 m 150 ft 46 m 45 elbow is equivalent to 3 ft 1 m 90 elbow is equivalent to 6 ft 2 m Concentric Pipe Installatio...

Page 30: ...case scenario of 3 X 90 elbows or 18 equivalent ft Twin Pipe Vertical Termination of Multiple Water Heaters Combustion air termination not permitted in shaded area Horizontal Vent and Combustion Air P...

Page 31: ...he use of a pipe reducer installers can use a 3 in 76 mm pipe for the combustion air and exhaust Remove and discard the screw from the combustion air vent connection Remove and discard the combustion...

Page 32: ...tion 2 in or 3 in PVC Low Profile Termination Configuration This configuration requires the use of a Concentric Vent Termination Exhaust and combustion air MUST NOT be brought together into a single P...

Page 33: ...tance of 15 ft 4 m J Clearance to non mechanical air supply inlet to building or the combustion air inlet to any other appliance 36 in 91 cm 4 ft 1 2 m below or to side of opening 1 ft 300 mm above op...

Page 34: ...ipated snow level 2 in 0 91 m to ventilated or unventilated soffit or eve vent or to a deck or porch Termination Clearances for External Outdoor Water Heaters Exhaust Termination Clearances for Intern...

Page 35: ...me is less than 50 cubic feet per 1000 Btu hr 4 8 m3 per kW per hour of the aggregate input rating of all appliances installed in that space Examples include a small room closet alcove utility room et...

Page 36: ...e regulations therein Checklist for Combustion Air and Venting Requirements Location To maintain proper circulation of combustion air two permanent openings one upper one lower must be positioned in c...

Page 37: ...ure with the supplied screw Use the room air screen for environments where room air is dusty Note 2 in vent screen supplied with water heater Room air screen is available as an accessory Glue elbow to...

Page 38: ...Non Direct Vent Room Air Example Vent Applications Non Direct Vent Room Air Maximum Vent Length Non Direct Vent Room Air 2 Room Air Maximum Equivalent Length Table Vent Sizes 2 in 51 mm 3 in 76 mm 2 i...

Page 39: ...ets on the back side of the water heater Installation Enclosure with Louvered Door for Manufactured Home Applications Use the following chart to identify the minimum required size of the opening in th...

Page 40: ...ent Diameter Max System Btu hr 3 in 4 in 6 in RU199i REU N3237FF US RU180i REU N2934FF US 2 398 000 360 000 65 ft 20 m 150 ft 46 m 150 ft 46 m RU160i REU N2530FF US RU130i REU N2024FF US 2 320 000 260...

Page 41: ...T Water connections to the water heater should follow all state and local plumbing codes If this is a standard installation refer to the Piping Diagram for Basic Installation below 1 Plumb the cold wa...

Page 42: ...Hot Outlet side of the water heater 2 Hand tighten the Swivel Nut of the Hot Isolation Valve Red to the Hot Outlet side of the water heater 3 Rotate the Drain Valve to an accessible position With a wr...

Page 43: ...Fahrenheit The pressure relief valve is assembled to the pressure relief valve adapter as illustrated on the next page DO NOT place any other valve or shut off device between the pressure relief valv...

Page 44: ...the steps below 1 On the bottom of the tankless water heater hand tighten the Pressure Relief Valve Assembly and Gasket to the Pressure Relief Valve Union Fitting 2 Rotate the Pressure Relief Valve A...

Page 45: ...on and an interior wall If a floor drain is not available or the drain is above the level of the condensate drain a condensate pump should be installed A condensate neutralizer kit is available from R...

Page 46: ...Condensate Pump Safety Switch Installation NC NO COM Tankless Water Heater Test Operation 1 Test the operation of the shut off switch by unplugging the condensate pump and filling the condensate reser...

Page 47: ...solutions including soap and water may cause corrosion or stress cracking the piping shall be rinsed with water after testing unless it has been determined that the leak test solution is non corrosive...

Page 48: ...xample The appropriate table from the applicable code must be used Schedule 40 Metallic Pipe Inlet Pressure Less than 2 psi Specific Gravity 0 60 Gas Pipe Sizing Reference Tables Information in table...

Page 49: ...24 147 308 580 1 190 90 27 138 289 544 1 120 100 30 131 273 514 1 060 Information in table obtained from NFPA 54 ANSI Z223 1 2015 Information in table obtained from NFPA 54 ANSI Z223 1 2015 Intended...

Page 50: ...ly Connection Checklist When connecting the power supply follow these guidelines Do not rely on the gas or water piping to ground the water heater Ground locations are provided inside the water heater...

Page 51: ...109 m 03 Service Soon1 Disabled 0 5 Year 1 Year 2 Years 04 Recirculation Settings No Recirculation Recirculation Dedicated 05 Recirculation Mode2 Economy Comfort 06 Control Switch BMS3 Air Handler AH...

Page 52: ...gs the external pump cable is not included with the tankless water heater and must be purchased separately Circ Logic operates in either Economy or Comfort mode based on the parameter settings of the...

Page 53: ...es to the tankless water heater are not interchanged Does the water supply to the heater have adequate pressure Is it free of chemicals Did you verify it does not exceed total hardness that will damag...

Page 54: ...ndensate drain pipe is open to atmosphere GAS SUPPLY YES NO Did you verify the gas system is appropriately sized Did you verify the water heater is rated for the gas type supplied Have you performed a...

Page 55: ...ch as chlorine or bleach that produce fumes These fumes can damage components and reduce the life of your appliance Damage and repair due to scale in the heat exchanger is not covered by warranty Alwa...

Page 56: ...the beeps repeat the above steps 1 To lock the internal controller press and hold down the Priority button 2 While holding down the Priority button press the Up button until a beep is heard approxima...

Page 57: ...when you are not getting hot water or if the water alternates between hot and cold it is due to the water flow being below or close to the minimum flow rate Increasing the flow rate should resolve the...

Page 58: ...s to scroll to the desired information described in the Performance Data Table 4 To exit performance data repeat step 2 above 5 When complete the set temperature appears in the display 1 2 DATA UNIT 0...

Page 59: ...ter Not Turning On Check that the gas is turned on at the water heater meter or cylinder If the system is propane make sure that gas is in the tank Ensure gas type and inlet gas pressure are correct B...

Page 60: ...required to fire unit Measure the resistance of the water flow control sensor Clean inlet water supply filter On new installations ensure hot and cold water lines are not reversed 19 Electrical Groun...

Page 61: ...professional must verify proper operation after servicing The following maintenance items are required for the proper operation of your water heater 5 Maintain the Water Heater 5 1 Maintenance VENT S...

Page 62: ...and will have to be manually opened WINTERIZATION The following recommendations are intended to suggest practices that are effective for winterizing the water heater They should be used as a guide onl...

Page 63: ...ecuring the front panel Remove the front panel and locate the filter at the upper right hand corner of the water heater Remove the air filter by pulling out the FILTER Pull to Clean tab 5 2 Cleaning a...

Page 64: ...Allow water to flow through the water heater for five minutes d Close shutoff valve V4 When unit has finished draining remove the in line filter at the cold water inlet and clean out any residue Plac...

Page 65: ...ater heater and the piping for leaks HOT COLD ON To avoid burns wait until the equipment cools down before draining the water The water in the appliance will remain hot after it is turned off WARNING...

Page 66: ...66 Rinnai Tankless Water Heater Installation and Operation Manual 6 Appendices 6 1 Wiring Diagram PC BOARD...

Page 67: ...Rinnai Tankless Water Heater Installation and Operation Manual 67 6 2 Ladder Diagram...

Page 68: ...ase contact Rinnai Delta T Temperature Rise F Water Flow GPM Dashed lines represent flow rate after parameter adjustment RU130 RU160 RU180 RU199 6 3 Pressure Drop and Water Flow Curves Pressure Loss f...

Page 69: ...Location The temperature controller should be out of reach of small children Avoid locations where the temperature controller may become hot near an oven or radiant heater Avoid locations in direct su...

Page 70: ...er to secure the services of qualified licensed professionals for the installation of hard wired carbon monoxide detectors A In the event that the side wall horizontally vented gas fueled equipment is...

Page 71: ...Rinnai Tankless Water Heater Installation and Operation Manual 71 COMBINATION SPACE HEATING POTABLE WATER SYSTEM For Use In Commonwealth of Massachusetts Massachusetts State Regulations Continued...

Page 72: ...curs first if the Rinnai Tankless Water Heater temperature settings exceed 160 F 71 C The integrated controller has a 1 year warranty on parts What Will Rinnai Do Rinnai will repair or replace the cov...

Page 73: ...horized to make any other warranties on behalf of Rinnai America Corporation Except as expressly provided herein there are no other warranties expressed or implied including but not limited to warrant...

Page 74: ...74 Rinnai Tankless Water Heater Installation and Operation Manual 7 Notes...

Page 75: ...Rinnai Tankless Water Heater Installation and Operation Manual 75 Notes...

Page 76: ...76 Rinnai Tankless Water Heater Installation and Operation Manual 100000467 05 8 2019...

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