Rinnai REU-NP2530FF-US Installation And Operation Manual Download Page 39

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Rinnai Tankless Water Heater Installation and Operation Manual

1. Direct Vent

(Twin Pipe)

Twin Pipe Overview

Combustion air and exhaust vent directly through separate penetrations.

Twin Pipe Termination Clearances

Exhaust

12 in. (0.30 m)

minimum above

combustion air

opening

12 in. (0.30 m)

minimum

12 in. (0.30 m)

minimum

Combustion

Air

12 in. (0.30 m) above

grade or anticipated

snow level

Roof

Indicates area in which intake cannot be installed.

Intake

60 in.

min

12 in.

min

12 in.

min

12 in.

min

12 in.

min

12 in.

min

Intake

Exhaust

Figure 31

Figure 32: Twin Pipe Vertical

Termination of Multiple Water Heaters

Figure 33: Horizontal Vent and Combustion

Air Piping

Minimum clearance for

Ground/Grade/Snow Level

Summary of Contents for REU-NP2530FF-US

Page 1: ...tallation and Operation Manual ANSI Z21 10 3 CSA 4 3 INTERNAL INDOOR MODELS RSC199i REU NP3237FF US A RSC160i REU NP2530FF US A EXTERNAL OUTDOOR MODELS RSC199e REU NP3237W US A RSC160e REU NP2530W US...

Page 2: ...ncy or the gas supplier Assurez vous de bien suivre les instructions donn es dans cette notice pour r duire au minimum le risque d incendie ou d explosion ou pour viter tout dommage mat riel toute ble...

Page 3: ...u Will Need 18 4 3 Choose an Installation Location 19 4 4 Mount the Water Heater to the Wall 24 4 5 Vent the Water Heater 26 4 6 Connect Water Supply 50 4 7 Install the Isolation Valves 51 4 8 Install...

Page 4: ...nspecting the Air Filter Indoor Units Only 83 6 3 Flushing the Heat Exchanger 85 6 4 Draining the Water Heater 86 7 Appendices 87 7 1 Massachusetts State Gas Regulations 87 7 2 Wiring Diagram 89 7 3 L...

Page 5: ...ank you for purchasing a Rinnai Tankless Water Heater Before installing and operating this water heater be sure to read these instructions completely and carefully to familiarize yourself with the wat...

Page 6: ...ssur s par un installateur ou un service d entretien qualifi ou par le fournisseur de gaz Les panneaux d avertissement de ce manuel sont ici pour viter de vous blesser et d autres personnes Suivez les...

Page 7: ...of this or any gas appliance Always check the water temperature be fore entering a shower or bath To protect yourself from harm before per forming maintenance Turn off the electrical power supply by...

Page 8: ...or attempted repair may result in a fire or explosion Do not use this appliance if any part has been under water Immediately call a trained and qualified professional to inspect the appliance and to...

Page 9: ...Manual 9 3 3 AbouttheWaterHeater AbouttheWaterHeater 3 1 FrontView Indoor Outdoor Topics in this section Front View Bottom View Components Specifications Dimensions Accessories Controller Piping Conne...

Page 10: ...10 Rinnai Tankless Water Heater Installation and Operation Manual 3 2 BottomView Gas Hot Water Outlet Cold Water Inlet Pressure Relief Valve Figure 2 Bottom View...

Page 11: ...Intake Burner Assembly Ignition Unit PC Board Integrated Pump Heat Exchanger Gas Valve Flue Gas Exhaust Air Inlet Filter Fan with Integrated Venturi Silencer Bypass Flow Servo Valve Intake Exhaust Wat...

Page 12: ...Control Electronic Gas Supply Pressure 2 Natural Gas 3 5 in wc 10 5 in wc Propane 8 0 in wc 13 5 in wc Type of Appliance Super High Efficiency Condensing Tankless Temperature Controlled Continuous Flo...

Page 13: ...asurements in mm Indoor Models RSC199i and RSC160i Front Panel View Side Panel View Outdoor Models RSC199e and RSC160e Front Panel View Side Panel View Vent Connection 2 in 51 mm nominal PVC Polypropy...

Page 14: ...1 22 31 1 Cold Inlet Gas Hot Outlet Condensate Drain Pressure Relief Valve Connection Connection Size Gas 3 4 in NPT Cold Inlet 3 4 in NPT Hot Outlet 3 4 in NPT Condensate Drain 1 2 in NPT Pressure R...

Page 15: ...2 MCC 601 Additional controllers are available for user convenience Recess Box Part RGB CTWH 4 Allows an external outdoor water heater to be recessed into a wall Pipe Cover Part PCD07 SM Encloses the...

Page 16: ...nted in a convenient location such as a kitchen faucet or bathroom sink the wireless push button works with the control r Module to operate the tank less water heater recirculation system by pushing t...

Page 17: ...e with local codes or in the absence of local codes with the National Electrical Code ANSI NFPA 70 or the Canadian Electri cal Code CSA C22 1 The appliance and its main gas valve must be disconnected...

Page 18: ...nting Bracket for internal in door water heaters only Pressure Relief Valve and Adapter Isolation Valve Kit for quick isolation of the water heater for service and or maintenance Thermal Isolation Val...

Page 19: ...is water heater includes a service indicator Service Soon SS When selected in the parameter settings an SS code will display on the controller indicating that it is time to flush and service the water...

Page 20: ...er as far away as possible from any air inlet vents Corro sive fumes sometimes found in hair nail salons spas or other industries exposed to toxic fumes may be released through these vents when not in...

Page 21: ...may be drained manually However it is highly recommended to install the optional Drain Down Kit accessory that will enable the water heater to immediately drain upon loss of power the condensate trap...

Page 22: ...Ground 12 in 305 mm Front 0 in Clearance for servicing is 24 in 610 mm in front of water heater Back 0 in Sides Left and Right 2 in 51 mm Add 0 25 in 6 35 mm for recess box Vent Internal Indoor Model...

Page 23: ...s 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 s...

Page 24: ...y Installer Level 4 Screws for mounting bracket installa tion Use appropriate screws for type of wall constructions Instructions 1 Hold the wall mounting bracket up against the wall and use a level to...

Page 25: ...ews for type of wall construction Instructions 1 Securely screw the top and bottom brackets into the wall making sure the screws are flush with the wall Use any of the holes in the top and bot tom bra...

Page 26: ...r of pipe fittings For manufactured vent systems vent connections must be firmly pressed together so that the connections form an air tight seal Follow the venting manu facturer s instructions Refer t...

Page 27: ...upersede the following clearances Avoid termination locations near a dryer vent Avoid termination locations near com mercial cooking exhaust Avoid termination locations near any air inlets You must in...

Page 28: ...yer Twin Pipe Combustion air and exhaust vent directly through separate penetrations Room Air Room air is used for combustion while exhaust vents to the outside External Outdoor External outdoor water...

Page 29: ...w ipexinc com DuraVent 800 835 4429 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 Manuf...

Page 30: ...2 in x 16 in 20 52CVKGVS6502 28 PVC Concentric Vent Kit 2 in x 28 in 20 52CVKGVS6502 40 PVC Concentric Vent Kit 2 in x 40 in 20 CENTROTHERM ICRT2439 2 in x 4 in Concentric Roof Termination 20 DURAVEN...

Page 31: ...Condensing Roof Discharge Termination 20 in above roof 5 IPEX 196006 197009 FGV Concentric Vent Kit 3 in x 20 in 20 196006PVC Order from Rinnai 196106 197107 FGV Concentric Vent Kit 3 in x 32 in 20 19...

Page 32: ...AL FAB 3CGRLSV Vertical Adapter 1 3CGRLSH Horizontal Adapter 6 3CGRVT Vertical Termination 5 3CGRHT 3 in x 5 in Vertical Termination Cap Kit Concentric 16 DURAVENT 3PPS VKL VK TCL 3 in x 5 in Vertical...

Page 33: ...PS UV 6 ISTT0220 2 in Termination Tee 6 ISLPT0202 2 in Low Profile Wall Termination 5 DURAVENT 2PPS HTPL 2 in Twin Pipe Termination 10 2PPS HSTL 2 in Single Horizontal Termination 6 2PPS TBL 2 in Blac...

Page 34: ...PS UV 6 ISTT0320 3 in Termination Tee 6 ISLPT0303 3 in Low Profile Wall Termination 5 DURAVENT 3PPS HTPL 3 in Twin Pipe Termination 10 3PPS HSTL 3 in Single Horizontal Termination 5 3PPS TBL 3 in Blac...

Page 35: ...thylene 2 in Vent Screens included in carton box IPEX Part Number 196050 3 in Vent Screens IPEX Part Number 196051 Exhaust piping must be of solid core material Refer to the PVC CPVC manufacturer for...

Page 36: ...riveway located on public property 7 ft 2 13 m 1 Vents for Category II and IV appliances cannot be located above public walkways or other areas where condensate or vapor can cause a nuisance or hazard...

Page 37: ...mbustion air Exhaust Combustion air Concentric Pipe Termination Clearances Inside Corner 12 in 0 30 m 12 in 0 30 m 60 in 1 52m ver cally between terminals 60 in 1 52m Note 24 in 0 61 m to wall or para...

Page 38: ...ation Use a level to make sure the wall mounting bracket is even and level Wall Mounting Bracket Template Level Wall Mounting Bracket Table 14 Concentric Pipe Vent Applications Horizontal Wall Termina...

Page 39: ...e combustion air opening 12 in 0 30 m minimum 12 in 0 30 m minimum Combustion Air 12 in 0 30 m above grade or anticipated snow level Roof Indicates area in which intake cannot be installed Intake 60 i...

Page 40: ...ent pipe Ensure it is properly seated Secure the combustion air vent pipe to the combustion air vent connection with the supplied screw 4 Install the exhaust vent pipe Ensure it is properly seated Sec...

Page 41: ...ule 40 PVC CPVC or ABS Elbow or Tee Side Wall Termination Configuration 2 in or 3 in Schedule 40 PVC CPVC or ABS Tee Vertical Termination Configuration 2 in or 3 in PVC Low Profile Termination Configu...

Page 42: ...izontally L Clearance above paved sidewalk or paved driveway located on public property 7 ft 2 13 m 1 Vents for Category II and IV appliances cannot be located above public walkways or other areas whe...

Page 43: ...in 1 52 m vertically between terminals 2 in 12 in 0 30 m Corner Exhaust Termination Clearances for Internal Indoor Room Air Applications 60 in 1 52 m vertically between terminals 12 in 12 in 0 30 m C...

Page 44: ...a part of the unconfined space If the unconfined space containing the appliance s is in a building with tight construction additional outside air may be required for proper operation Outside air open...

Page 45: ...be positioned as to never be obstructed 12 in 300 mm 10 in 250 mm Combustion air provided to the appliance should not be taken from any area of the structure that may produce a negative pressure i e...

Page 46: ...is properly seated Secure the combustion air vent pipe to the combustion air vent connection with the supplied screw Figure 44 4 Place the vent screen or room air screen inside elbow and secure with t...

Page 47: ...3 in Schedule 40 PVC CPVC or ABS Tee Vertical Termination Configuration Slope horizontal exhaust 1 4 in per foot towards the water heater Ubbink flexible venting approved for vertical non direct vent...

Page 48: ...anels doors or opening of any kind are not permitted between the installation enclosure and the inside of the manufactured home The installation enclosure must include an exterior access door incorpor...

Page 49: ...e illustration below Vent Length Figure 49 Sample Inline Freestanding Configuration Water Heater Model Water Heaters Max System Btu hr Vent Diameter 3 in 4 in 6 in RSC199i REU NP3237FF US A and RU199i...

Page 50: ...er to determine the necessary components and configuration of the particular system being installed This drawing does not imply compliance with local building code requirements It is the responsibilit...

Page 51: ...n Valve Red below the 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 accessi...

Page 52: ...line shall be plain unthreaded and a minimum of 3 4 in nominal pipe diameter The dis charge line material must be suitable for water at least 180 Fahrenheit The pressure relief valve is assembled to t...

Page 53: ...ve Union Fitting 2 Rotate the Pressure Relief Valve Assembly to the desired accessible position With a wrench tighten the Union Nut to the Pressure Relief Valve Union Fitting Pressure Relief Valve Uni...

Page 54: ...insulation and an interior wall If a floor drain is not available or the drain is above the level of the conden sate drain a condensate pump should be installed Pipe open to atmosphere Pipe submerged...

Page 55: ...h of wire 18 AWG or greater and strip the insulation off the ends Follow the wiring guidelines established by the National Electrical Code NEC 5 With wire nuts or other approved wire connectors connec...

Page 56: ...Nut Connecting Two Wires Field Supplied Wires Safety Switch Wires Condensate Pump field supplied Includes internal safety switch and power cord Power cord must be plugged into power source Safety swi...

Page 57: ...with all gas appliances operating 4 Before placing the appliance in operation all joints including the heater must be checked for gas tightness by means of soap gas leak detector solution or an equiv...

Page 58: ...low is provided as an example The appropriate table from the applicable code must be used Table 23 Gas Pipe Sizing Calculation Worksheet Instructions Enter values in empty boxes Rinnai Model Gas Input...

Page 59: ...199 000 Btu hr B 65 000 Btu hr C 1 000 Btu ft3 CFH A B C CFH 199 000 65 000 1 000 CFH 264 ft3 hr Schedule 40 Metallic Pipe Inlet Pressure Less than 2 psi Specific Gravity 0 60 Propane Undiluted Table...

Page 60: ...m a properly grounded circuit If using the 5 ft 1 5 m power cord supplied with internal indoor water heaters plug it into a standard 3 prong 120 VAC 60 Hz properly grounded wall outlet On external out...

Page 61: ...ght side of unit 2 Locate the two push buttons A and B on the PC Board 3 Press the A button for 1 second WARNING A B 4 Use the Up and Down buttons on the controller to select a setting number see Para...

Page 62: ...water flow rate to the maximum capacity 5 Commercial mode should not be used for residential applications Application of commercial mode may result in excessive machine wear and energy consumption 6 L...

Page 63: ...he 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 damage the h...

Page 64: ...ump Have you verified the condensate drain line is not plumbed with the pressure relief valve Have you confirmed the condensate drain line is not connected with an air conditioning evaporator coil dra...

Page 65: ...supplier call the fire department Installation and service must be per formed by a trained and qualified professional service agency or the gas supplier Assurez vous de bien suivre les instructions d...

Page 66: ...a trained and qual ified professional Force or attempted repair may result in a fire or explosion This appliance does not have a pilot It is equipped with an ignition device which automatically lights...

Page 67: ...rvice technician or gas supplier TURN OFF GAS TO APPLIANCE 1 Set the temperature controller to lowest setting 2 Turn off all electric power to the appliance if service is to be performed 3 Turn the ma...

Page 68: ...ust the water temperature lock the controller on a set temperature and view diagnostic information 5 3 1 Setting the Controller to Mute To eliminate the beeps when keys are pressed press and hold both...

Page 69: ...ernal outdoor water heaters open the front panel to access the controller buttons 1 If the water heater is off press the On Off button to turn on 2 The Priority button enables a controller if multiple...

Page 70: ...a press and hold the On Off button on the controller for 5 seconds while the water heater is OFF These models have a default maximum temperature of 120 F 49 C and an option to increase the maximum tem...

Page 71: ...en 2 Closed 08 Inlet Temperature F 09 Fan Current x10 mA 10 Total Bath Fill Amount Gallons 11 HEX Outlet Temp F 12 By Pass Flow Control Position Degrees of opening 15 Freeze Protection Temperature Ind...

Page 72: ...not blocked and approved venting materials are being used Indoor Water Heaters Only Ensure vent length is within limits Indoor Water Heaters Only Check fan for debris and ensure wheel turns freely Ve...

Page 73: ...sensor 41 Freeze Protection Thermistor Follow the steps above for Code 38 for troubleshooting 51 Inlet Thermistor Check sensor wiring for damage Measure resistance or voltage of sensor Clean sensor of...

Page 74: ...gure Parameter Settings for additional details on setting and changing the SS indicator SS indicates that it is time for service The heat exchanger should be flushed to prevent damage refer to section...

Page 75: ...A Thermal Bypass Valve can be installed with water heaters to operate recirculation without a dedicated return line The Thermal Bypass Valve should be installed between the hot and cold line at the fa...

Page 76: ...t fixture in the plumbing system General Guidelines For the licensed installer professional For installation in commercial and resi dential domestic hot water applications only Rinnai strongly recomme...

Page 77: ...0 Recirculation Crossover Mode Plumbing Diagram Crossover Mode Gas Supply Line Cold Water Supply Line Floor Drain Condensate Drain Line Hot Water Fixtures Hot Water Supply Line Install thermal isolati...

Page 78: ...ear and energy consumption Pump Status Typical Intervals OFF Economy 10 Comfort 4 Commercial 4 Important The internal pump in an RSC model runs based on time intervals only and not water temperature l...

Page 79: ...irculation Dedicated Mode Plumbing Diagram Dedicated Mode Condensate Drain Line Floor Drain Hot Water Supply Line Hot Water Fixtures Cold Water Supply Line Locate Drain Valve as close as possible to t...

Page 80: ...y Default Adjust parameter setting to 05A for Economy mode This mode cycles the pump less often using less energy to maintain the circulation loop temperature Comfort Adjust parameter setting to 05b f...

Page 81: ...ned and qualified professional Repairs and maintenance shall be performed by a trained and qualified professional The trained and qualified professional must verify proper operation after servicing CL...

Page 82: ...if the combustion air or exhaust vent pipes are impeded blocked or partially blocked by obstructions Keep the condensate drain line free of snow and ice Ensure the line is not blocked or clogged and...

Page 83: ...ernal pipes have frozen Gas Shut off the gas to the water heater It is generally preferable to shut off the gas service to the entire location if gas is not going to be used Water Shut off the cold wa...

Page 84: ...lter With mild dish soap and a soft bristle brush scrub the filter area of the air filter door With clean water rinse the soap off the filter 4 Dry the Air Filter With a lint free towel dry the air fi...

Page 85: ...pump inlet into the cleaning solution 8 Open both service valves V1 and V2 on the hot water and cold water lines 9 Operate the pump and allow the vinegar to circulate through the water heater for at l...

Page 86: ...is turned off all taps are closed and PRV lever is closed 2 Insert the condensate trap drain plug 3 Close the hot and cold drain valves 4 Open the cold and hot water isolation valves 5 Open a tap and...

Page 87: ...d carbon monoxide detectors A In the event that the side wall horizon tally vented gas fueled equipment is installed in a crawl space or an attic the hard wired carbon monoxide detector with alarm and...

Page 88: ...low the top of the water heater as per manufacturer s recommendations Tempered water to plumbing fixtures Must meet temperature requirements of 248 CMR Hot Water Supply and Return to Heating Coil Elec...

Page 89: ...Rinnai Tankless Water Heater Installation and Operation Manual 89 7 2 WiringDiagram PC BOARD Figure 98...

Page 90: ...90 Rinnai Tankless Water Heater Installation and Operation Manual 7 3 LadderDiagram Figure 99...

Page 91: ...e after parameter adjustment The chart below applies only to incoming water temperatures of 70 F 21 C or less For incoming water temperatures greater than 70 F 21 C please contact Rinnai Delta T Tempe...

Page 92: ...pCurve WaterHeater Pump Figure 102 Need updated image from RJ 0 0 5 0 10 0 15 0 20 0 25 0 30 0 35 0 40 0 45 0 50 0 0 0 0 5 1 0 1 5 2 0 2 5 3 0 3 5 Presure Loss ft of Head Water Flow GPM Pressure Drop...

Page 93: ...ed to the water heater Number of Wired Controllers Maximum Cable Length for Each Controller to Water Heater 1 328 ft 100 m 2 164 ft 50 m 3 or 4 65 ft 20 m Four Temperature Controllers Connect controll...

Page 94: ...that is defective in materials or workmanship as set forth in the above table Rinnai will pay reasonable labor charges associated with the repair or replacement of any such part or component during t...

Page 95: ...71 C This Limited Warranty does not apply to any product whose serial number or manufacture date has been defaced This Limited Warranty does not cover any product used in an application that uses che...

Page 96: ...100000773 9 2021 Place Model Serial Label Here Located in Manual Bag Rinnai America Corporation 103 International Drive Peachtree City GA 30269 Tel 1 800 621 9419 Web rinnai us rinnai ca...

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