Rinnai CU160e Installation And Operation Manual Download Page 1

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INTERNAL (INDOOR) MODELS:

CU199i (REU-N3237FFC-US)
CU160i (REU-N2530FFC-US)

EXTERNAL (OUTDOOR) MODELS:

CU199e (REU-N3237WC-US)
CU160e (REU-N2530WC-US)

Tankless Water Heater (Commercial)

Installation and Operation Manual

ANSI Z21.10.3 ● CSA 4.3

U334-0775X02(00)

06000012337594

Summary of Contents for CU160e

Page 1: ...INTERNAL INDOOR MODELS CU199i REU N3237FFC US CU160i REU N2530FFC US EXTERNAL OUTDOOR MODELS CU199e REU N3237WC US CU160e REU N2530WC US TanklessWaterHeater Commercial InstallationandOperationManual A...

Page 2: ...he 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 blessure ou...

Page 3: ...2 What You 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 54 4 7 Install the Isolation Valves 55 4...

Page 4: ...Maintenance 80 6 2 Cleaning and Inspecting the Air Filter Indoor Units Only 82 6 3 Flushing the Heat Exchanger 84 6 4 Draining the Water Heater 85 7 Appendices 86 7 1 Massachusetts State Gas Regulati...

Page 5: ...innai Tankless Water Heater Before installing and operating this water heater be sure to read these instructions completely and carefully to familiarize yourself with the water heater s features and f...

Page 6: ...ntretien doivent tre assur s par un installateur ou un service d entretien qualifi ou par le fournisseur de gaz Les panneaux d avertissement de ce man uel sont ici pour viter de vous blesser et d autr...

Page 7: ...er or bath To protect yourself from harm before per forming maintenance Turn off the electrical power supply by unplugging the power cord or by turning off the electricity at the circuit breaker The t...

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 Figure 1 Front View Topics in this section Front View Bottom View Components Specifications Dimensions Accessories Con...

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

Page 11: ...al 11 3 3 Components Air Intake Burner Assembly Ignition Unit PC Board Cover Control Panel Integrated Pump Heat Exchanger Gas Valve Flue Gas Exhaust Air Inlet Filter Fan with Integrated Venturi Silenc...

Page 12: ...ctronic Gas Supply Pressure2 Natural 3 5 in w c 10 5 in w c Propane 8 0 in w c 13 5 in w c Type of Appliance Super High Efficiency Condensing Tankless Temperature Controller Continuous Flow Gas Hot Wa...

Page 13: ...rements in mm Internal Indoor Models CU199i CU160i Front Panel View Side Panel View External Outdoor Models CU199e CU160e Front Panel View Side Panel View Vent Connection 2 in 51 mm nominal PVC Polypr...

Page 14: ...2 8 71 7 6 193 6 2 157 1 22 31 36 9 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 Dr...

Page 15: ...of scale entering the water heater allowing for greater water heater longevity ScaleCutter Refill Cartridge Part 103000039 Refill cartridge for the ScaleCutter filter assembly Drain Down Kit Part 1040...

Page 16: ...water heaters and enables them to function as one hot water source Note One cable is needed for each wa ter heater EZConnect Cable Part REU EZC 2 Electronically connects two water heaters and allows...

Page 17: ...iance and its main gas valve must be disconnected from the gas supply piping system during any pressure testing of that system at test pressures in excess of 1 2 psi 3 5 kPa 13 84 in W C For system te...

Page 18: ...missing contact your local dealer distributor or call Rinnai Customer Care at 1 800 621 9419 Rinnai Tankless Water Heater Wall Mounting Bracket for internal indoor water heaters only Pressure Relief V...

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: ...r 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 tra...

Page 22: ...n from vent components Bottom 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 b...

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: ...Installer Level 4 Screws for mounting bracket installation Use appropriate screws for type of wall constructions Instructions 1 Hold the wall mounting bracket up against the wall and use a level to ma...

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 bottom brac...

Page 26: ...minimum number of pipe fittings For manufactured vent systems vent con nections must be firmly pressed together so that the connections form an air tight seal Follow the venting manufacturer s instru...

Page 27: ...persede the following clearances Avoid termination locations near a dryer vent Avoid termination locations near commer cial cooking exhaust Avoid termination locations near any air inlets You must ins...

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: ...t 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 DURAVE...

Page 31: ...nsing 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 196106P...

Page 32: ...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 Termin...

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: ...uring Polypropylene DiversiTech PVC CPVC Approved PVC CPVC Vent and Air Piping Material Item Material Standard for Installation in North America United States Canada Thermoplastic Piping Materials Ven...

Page 36: ...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 where condensate or vapor can cause a nuisance or haza...

Page 37: ...r Combustion 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...

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 13 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: ...zontally 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 wher...

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: ...oned 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 exhaust fa...

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: ...ttings The common vent system must only be in stalled by a trained and qualified professional Common Vent Termination Clearances Vent termination per ANSI Z223 1 NFPA 54 For clearances not specified i...

Page 49: ...ax System BTU HR Header Diameter 3 in 4 in 6 in 3 in Vent Diameter 4 in Vent Diameter 6 in Vent Diameter 6 in Vent Diameter RU199i REU N3237FF US CU199i REU N3237FFC US RUR199i REU NP3237FF US 2 398 0...

Page 50: ...ink C Vent Manufacturer Phone Web Site Ubbink 800 621 9419 www rinnai us Part Number Product Description Diagram Horizontal Vertical Equivalent Length ft 790096 790095 CVent Roof Termination 6 in CVen...

Page 51: ...plying power to the system or introducing any other source of ignition When installing PVC CPVC Common Vent follow these guidelines Avoid sharp bends or tees in the vent system These vent components c...

Page 52: ...uired Cable Length 26 ft 8 m OR Cable Length 10 ft 3 m One cable required for each water heater Includes 1 cable and 2 cascade jumpers Cascade Cable Assembly 1 Connect one end of the Cascade Cable to...

Page 53: ...eater is set to Secondary Parameter adjustment is only needed on the water heater identified as Primary NOTE Controller will display 09 Units in Standby Adjust the parameter setting of the primary uni...

Page 54: ...the contractor engineer to determine the necessary components and configuration of the particular system being installed This drawing does not imply compliance with local building code requirements I...

Page 55: ...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 56: ...e line shall be plain unthreaded and a minimum of 3 4 in nominal pipe diameter The discharge line material must be suitable for water at least 180 Fahrenheit The pressure relief valve is assembled to...

Page 57: ...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 58: ...insulation 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 Pipe open to atmosphere Pipe submerged...

Page 59: ...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 60: ...Connecting Two Wires Installer Supplied Wires Safety Switch Wires Condensate Pump installer supplied Includes internal safety switch and power cord Power cord must be plugged into power source Safety...

Page 61: ...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 equivalent...

Page 62: ...ow is provided as an example The appropriate table from the applicable code must be used Table 25 Gas Pipe Sizing Calculation Worksheet Instructions Enter values in empty boxes Rinnai Model Gas Input...

Page 63: ...0 ft 6 m in length A 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 Pro...

Page 64: ...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 outd...

Page 65: ...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 66: ...perature Comfort mode cycles the pump more frequently ensuring the loop temperature remains higher but also uses more energy 3 BMS Building Management System 4 Selecting High will increase the water f...

Page 67: ...ettings 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...

Page 68: ...does not exceed maximum length PLUMBING YES NO Have the water lines been purged of all debris and the filter cleaned Have you verified the hot and cold water lines to the tankless water heater are not...

Page 69: ...al codes Did you use ONLY corrosion resistant materials for the condensate drain lines Did you verify the condensate drain pipe along its entire length is at least the same diameter as the drain line...

Page 70: ...your gas supplier call the fire department Installation and service must be performed by a qualified installer service agency or the gas supplier Assurez vous de bien suivre les instructions donn es d...

Page 71: ...licensed profes sional 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 the burner DO...

Page 72: ...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 73: ...the beeps when keys are pressed press and hold both the Up and Down buttons at the same time until a beep is heard approximately 3 seconds Then release both buttons To turn on the beeps repeat the ab...

Page 74: ...oor 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 controlle...

Page 75: ...he tap by mixing with cold water To change the temperature scale from Celsius to Fahrenheit or vice versa press and hold the On Off button on the controller for 5 seconds while the water heater is OFF...

Page 76: ...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 77: ...re 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...

Page 78: ...sensor wiring for damage Measure resistance of sensor Replace sensor 41 Freeze Protection Thermistor Follow the steps above for Code 38 for troubleshooting 51 Inlet Thermistor Check sensor wiring for...

Page 79: ...changing the SS indicator SS indicates that it is time for service The heat exchanger should be flushed to prevent damage refer to section 6 3 Flushing the Heat Exchanger for more information Hard wat...

Page 80: ...nsed professional Repairs and maintenance shall be performed by a licensed professional The licensed professional must verify proper operation after servicing CLEANING It is imperative that control co...

Page 81: ...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 that co...

Page 82: ...the water heater to prevent freezing Steps to take when the water heater or external pipes have frozen Gas Shut off the gas to the water heater It is generally preferable to shut off the gas service...

Page 83: ...e the air filter by pulling out the FILTER Pull to Clean tab 3 Clean the Air Filter With mild dish soap and a soft bristle brush scrub the filter area of the air filter door With clean water rinse the...

Page 84: ...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 85: ...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 confirm t...

Page 86: ...rbon monoxide detectors J In the event that the side wall horizontally vented gas fueled equipment is installed in a crawl space or an attic the hard wired carbon monoxide detector with alarm and batt...

Page 87: ...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 88: ...Figure 86 Rinnai Tankless Water Heater Installation and Operation Manual 88 7 2 WiringDiagram PC BOARD...

Page 89: ...Rinnai Tankless Water Heater Installation and Operation Manual 89 7 3 LadderDiagram Figure 87...

Page 90: ...te 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 Temp...

Page 91: ...cable length from each temperature controller to the water heater depends on the total number of wired controllers connected to the water heater Number of Wired Controllers Maximum Cable Length for Ea...

Page 92: ...uring the term of the labor warranty period All repair parts must be genuine Rinnai parts All repairs or replacements must be performed by a qualified professional who is properly trained to do the ty...

Page 93: ...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 94: ...Rinnai Tankless Water Heater Installation and Operation Manual 94 Notes Notes...

Page 95: ...Rinnai Tankless Water Heater Installation and Operation Manual 95 Notes Notes...

Page 96: ...100000504 06 6 2020 Rinnai America Corporation 103 International Drive Peachtree City GA 30269 Tel 1 800 621 9419 Web rinnai us rinnai ca...

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