Rinnai SENSEI CU Series Installation And Operation Manual
Rinnai SENSEI CU Series Installation And Operation Manual

Rinnai SENSEI CU Series Installation And Operation Manual

Tankless water heater (commercial)
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INTERNAL (INDOOR) MODELS:
CU199i (REU-N3237FFC-US)
CU160i (REU-N2530FFC-US)
T nkless W ter He ter (Commerci l)
Inst ll tion nd Oper tion M nu l
U334-0775X04(00)
06000012337594
EXTERNAL (OUTDOOR) MODELS:
CU199e (REU-N3237WC-US)
CU160e (REU-N2530WC-US)
C
US
ANSI Z21.10.3 ・ CSA 4.3

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Summary of Contents for Rinnai SENSEI CU Series

  • Page 1 INTERNAL (INDOOR) MODELS: EXTERNAL (OUTDOOR) MODELS: CU199i (REU-N3237FFC-US) CU199e (REU-N3237WC-US) CU160i (REU-N2530FFC-US) CU160e (REU-N2530WC-US) ANSI Z21.10.3 ・ CSA 4.3 T nkless W ter He ter (Commerci l) Inst ll tion nd Oper tion M nu l U334-0775X04(00) 06000012337594...
  • Page 2 – Si vous ne pouvez rejoindre le fournisseur, appelez le service des incendies. • L’installation et l’entretien doivent être assurés par un installateur ou un service d’entretien qualifié ou par le fournisseur de gaz. Full-length French and Spanish versions available online at rinnai.us Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 3: Table Of Contents

    4.12 Configure Parameter Settings ..................... 65 4.13 External Pump with Circ-Logic ..................... 67 4.14 Post-Water Heater Installation Checklist ................68 Operation ............................70 Safety Precautions ........................70 Operating Instructions ......................72 Control Panel ........................73 Setting the Temperature .......................74 Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 4 Massachusetts State Gas Regulations ................. 86 Wiring Diagram ........................88 Ladder Diagram ........................89 Pressure Drop and Water Flow Curves ................90 Guidelines for Additional Temperature Controllers ............... 91 Warranty ............................92 Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 5: Welcome

    • When installation is complete, leave Polypropylene this manual with the water heater (for internal/indoor units) or give the manual Pressure Relief Valve directly to the consumer. Pounds per square inch Inches of water column Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 6: Safety

    Please follow them explicitly. d’entretien qualifié ou par le fournisseur de gaz. • Les panneaux d’avertissement de ce manuel sont ici pour éviter de vous blesser et d’autres personnes. Suivez- les explicitement. Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 7: Safety Symbols

    – Turn off the incoming water supply. This can be done at the isolation valve immediately below the water heater or by turning off the water supply to the building. Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 8 Flammable liquids should not be used or stored in the vicinity of this or any other gas appliance. Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 9: About The Water Heater

    Topics in this section • Front View • Bottom View • Components • Specifications • Dimensions • Accessories 3. 1 Front View Indoor Outdoor Vent Connections Exhaust Duct Controller Piping Connections Figure 1: Front View Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 10: Bottom View

    3.2 Bottom View Pressure Relief Valve Hot Water Gas Inlet Cold Water Outlet Inlet Figure 2: Bottom View Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 11: Components

    Air Inlet Filter Fan with Integrated Venturi Burner Assembly Gas Valve Ignition Unit Heat Exchanger Silencer PC Board Control Panel Water Flow Bypass Flow Servo Valve Servo Valve (behind controller bracket) Figure 3: Components Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 12: Specifications

    0.4 GPM (1.5 L/min). The 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 Tankless Water Heater Installation and Operation Manual...
  • Page 13: Dimensions

    Vent Connection: 2 in. (51 mm) nominal PVC/Polypropylene or 3 in./5 in. Concentric. Figure 4: Indoor Dimensions External (Outdoor) Models (CU199e, CU160e) Front Panel View Side Panel View Figure 5: Outdoor Dimensions Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 14: Supply Connections

    Figure 6: Supply Connections Table 3 Connection Connection Size 3/4 in. NPT Cold Inlet 3/4 in. NPT Hot Outlet 3/4 in. NPT Condensate Drain 1/2 in. NPT Pressure Relief Valve M33 Thread Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 15: Accessories

    3.6 Accessories Numerous optional accessories are available for purchase for your Rinnai Tankless Water Heater. Listed below are some commonly purchased accessories. For a complete list of accessories, visit www.rinnai.us. For questions, or to purchase an accessory, contact your local Rinnai dealer/distributor or Rinnai Customer Care at 1-800-621-9419.
  • Page 16 The DPS function provides domestic hot water priority for combination tankless water heater/ air handler applications. DPS/MIS Switch Part #: REU-OPU3 The MIS function provides tankless water heater monitoring via systems such as BMS (Building Management System). Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 17: Install The Water Heater

    • The installation must conform with local codes or, in the absence of local codes, with the National Fuel Gas Code, ANSI Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 18: What You Will Need

    • Pressure Relief Valve and Adapter • Single gang electrical box • Isolation Valve Kit (for quick isolation • Unions and drain valves of the water heater for service and/or maintenance) • Literature Bag Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 19: Choose An Installation Location

    Rinnai Tankless These include corrosive compounds that are Water Heater. Water that contains chemicals...
  • Page 20 Chemicals that are corrosive in nature should not be stored or used near the water heater or vent termination. This requirement applies to internal (indoor) and external (outdoor) water heaters. Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 21: Freeze Protection

    Supply Line Supply 1/2 in. Normally Open Solenoid Valve Line 1/2 in. Normally Open Solenoid Valve Route Drain Per Local Code Route Drain Per Local Code Figure 7: Freeze Protection Piping Diagram Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 22 Back 0 in. Sides (Left and Right) 2 in. (51 mm) Add 0.25 in. (6.35 mm) for recess box Vent 0 in. (Internal/Indoor Models) Front Exhaust 24 in. (610 mm) (External/Outdoor Models) Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 23: Installation Location Checklist

    The installation must conform with local codes or, in the absence of local codes, with the National Fuel Gas Code, ANSI Z221.3/NFPA 54 Natural Gas and Propane , or the Installation Code, CSA B149.1 Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 24: Mount The Water Heater To The Wall

    Use the appropriate screws for the wall construction to secure the mounting bracket to the wall between two studs. Figure 11: Mount the top bracket Figure 10: Secure the bracket Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 25: Mount The External (Outdoor) Water Heater To The Wall

    Figure 12: Mount the bottom bracket The water heater must be installed in an upright position. Do not install the water heater upside down or on its side. Figure 13: Mount the water heater Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 26: Vent The Water Heater

    • Refer to the PVC/CPVC manufacturer for appropriate fittings, solvents or join- ing methods. • The vent piece connected to the water heater must be secured with 1 self-tap- ping screw. Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 27: Venting Installation

    • Do not install the vent termination too close under the soffit where it could Figure 14: Vent Screen present recirculation of exhaust gases back into the combustion air part of the termination. Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 28: Venting Options

    Figure 19: Common Vent, Direct Vent Figure 20: Common Vent, Room Air Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 29 FGV Concentric Vent Kit (16 in. length) (Order from Rinnai) 196105, 197033 196105PVC FGV Concentric Vent Kit (28 in. length) (Order from Rinnai) 196125 196125PVC FGV Concentric Vent Kit (40 in. length) (Order from Rinnai) Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 30 2 in. x 4 in. Horizontal Termination 2PPS-HKL Kit-Concentric 190288 2 in. x 4 in. Concentric Horizontal Termination 190295 2 in. x 4 in. Concentric Vertical Termination CVENT-2 2 in. Concentric Vent (Termination) Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 31 PVC/CPVC Concentric Vent Kit 3 in. x 32 in. 52CVKGVSF9003-32(CPVC) 52CVKGVS6503-44(PVC)/ PVC/CPVC Concentric Vent Kit 3 in. x 44 in. 52CVKGVSF9003-44(CPVC) Horizontal Termination Adapter SC03HT Vertical Termination Adapter SC03VT 3 in./5 in. Concentric Roof Termination PPs-UV ICRT3539 Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 32 3 in. x 5 in. Horizontal Termination Kit- 3PPS-HKL Concentric 3 in. x 5 in. Concentric 190388 Horizontal Termination 190395 3 in. x 5 in. Concentric Vertical Termination CVENT-3 3 in. Concentric Vent (Termination) Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 33 FGV PVC Low Profile Termination Kit 196984PVC (Order from Rinnai) 081216 FGV PVC Wall Termination Kit 52SWVKGVS6502 PVC Side Wall Vent Kits 52WTVKGVS6502 PVC Wall Vent Kits HVENT-2 2 in. Low Profile Horizontal Vent Kit Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 34 FGV PVC Low Profile Termination Kit 196985PVC (Order from Rinnai) 081219 FGV PVC Wall Termination Kit 52SWVKGVS6503 PVC Side Wall Vent Kits 52WTVKGVS6503 PVC Wall Vent Kits HVENT-3 3 in. Low Profile Horizontal Vent Kit Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 35 Table 12: Approved Venting Materials By Manufacturer Manufacturer Vent Material Ubbink PVC (Outer Vent), Polypropylene (Inner Vent) Centrotherm Polypropylene Heat-Fab Metal Metal Fab Metal IPEX PVC/CPVC DuraVent Polypropylene Royal ECCO Manufacturing Polypropylene DiversiTech PVC/CPVC Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 36 [2] Permitted only if veranda, porch, deck, or balcony is fully open on a minimum of two sides beneath the floor. If locally adopted installation codes specify clearances different than those illustrated, then the most stringent clearance shall prevail. Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 37 12 in. (0.30 m) Figure 22: Concentric Pipe Termination Clearances Figure 25: Between terminals at same level All terminations (horizontal and/or vertical) must terminate 12 in. (0.30 m) above grade or anticipated snow level. Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 38 • 45° elbow is equivalent to 3 ft (1 m) installation instructions. Dispose of condensate • 90° elbow is equivalent to 6 ft (2 m) per local codes. Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 39: Twin Pipe Termination Clearances

    12 in. 12 in. Intake 12 in. 12 in. 12 in. Minimum clearance for Ground/Grade/Snow Level Indicates area in which intake cannot be installed. Figure 33: Horizontal Vent and Combustion Air Piping Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 40 Secure the exhaust vent pipe to the exhaust adapter ring with the supplied screw. Exhaust Vent Pipe Supplied screw Figure 34 2. Remove and discard the combustion air vent cap. Figure 37 Figure 35 Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 41 2 in. (51 mm) 3 in. (76 mm) 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) Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 42 If locally adopted installation codes specify clearances different than those illustrated, then the most stringent clearance shall prevail. Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 43 60 in. (1.52 m) vertically between terminals Corner Figure 39 Exhaust Termination Clearances for Internal (Indoor) Room Air Applications 12 in. 12 in. (0.30 m) 60 in. (1.52 m) vertically between terminals Corner Figure 40 Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 44 NOTE If ducts are used, the cross sectional area of the duct must be greater than or equal to the required free area of the openings to which they are connected. Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 45 Verify that adequate combustion air is available for all appliances installed in the space. □ Installation complies with National Fuel Gas Code, ANSI Z223.1/NFPA 54 as well as local and state regulations therein. Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 46 Exhaust Vent Pipe 5. Install the exhaust vent pipe. Ensure it is properly seated. Supplied screw Secure the exhaust vent pipe to the exhaust adapter ring with the supplied screw (Figure 46). Figure 46 Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 47 Vent Length 65 ft (20 m) 150 ft (46 m) 50 ft. (15 m) • 45° elbow is equivalent to 3 ft (1 m) • 90° elbow is equivalent to 6 ft (2 m) Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 48: General Guidelines

    Vent) Common venting allows multiple Rinnai Tankless Water Heaters to share the same vent system. Rinnai water heaters can only be common vented with Schedule 40 PVC/CPVC or with the Rinnai certified common vent system. Figure 47: Example: Rinnai Common Venting...
  • Page 49 Common Vent Maximum Equivalent Vent Lengths (Rinnai Common Vent System or Schedule 40 PVC/CPVC) Common vent equivalent lengths include polypropylene pipe (PP) or PVC in a back-to-back or inline configuration. For the table below: Vent Length Header • Header is the main vent pipe into which several vents connect.
  • Page 50 Common Vent Terminations Table 22: Various 3 in., 4 in., and 6 in. Schedule 40 PVC/CPVC Terminations Product Diagram Description 90° Elbow 45° Elbow Table 23: Rinnai Common Vent Terminations (Ubbink C-Vent) Manufacturer Phone Web Site Ubbink 800-621-9419 www.rinnai.us Part Number...
  • Page 51 Short Sweep Close Turn and vent length. Condensate trap must include a loop that can hold 6 in. (15 cm) of water. Refer to the Rinnai Common Vent Installation manual for more information. Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 52 5. Proceed to “Programing Cascade Accessory Port Communication” on the following page. Location Figure 53 Primary Secondary 1 Secondary 2 Cascade Jumper Cascade Jumper Figure 54 Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 53 When ID setting is successful, the controller display will change from “- - -” to the newly set ID number. Secondary 01 Secondary 02 Secondary 03 Primary water heater Identify Secondary ID by Figure 55 pressing “On/Off” Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 54: Connect Water Supply

    Valve Boiler Drain Valve accordance with all local building codes. Confer with local building Figure 56 Hot Water Supply Line ure Relief Valve officials before installation. Solenoid Valve Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 55: Install The Isolation Valves

    7. Ensure that both Drain Valves are in the closed position before turning on water supply. Hot Outlet Cold Inlet Swivel Nut (Integrated Gasket) Hot Isolation Valve Drain Valve (Red) Cold Isolation Valve (Blue) Figure 57 Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 56: Install Pressure Relief Valve

    Con- tact the water supplier or local plumbing inspector on how to correct this situation. Do not plug the pressure relief valve. Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 57 Figure 58 IMPORTANT • Do not use pipe dope or thread sealant on union fitting with gasket. • Be careful not to lose or throw away the gasket. Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 58: Connect Condensate Drain

    Pipe open to • If a floor drain is not available or the drain atmosphere is above the level of the condensate drain, a condensate pump should be installed. Condensate Pump Figure 60 Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 59: Test Operation

    5. Turn off the water heater by pressing the white wires labeled “To Condensate Pump “On/Off” button on the controller. Wait five Safety Switch.” seconds then turn the power back on. This will clear the diagnostic code. Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 60 * Safety switch wires connect to the NO and COM contacts on the safety switch. • NO - Normally Open • NC - Normally Closed • COM - Common (Neutral) Figure 63 Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 61: Connect The Gas Supply

    MNPT connection 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.) Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 62: Natural Gas

    Answer: 70 (21) (CFH) = 80 (24) For this example, the pipe diameter must be at least 3/4 in. pipe size and 90 (27) 10 ft (3 m) in length. 100 (30) Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 63 70 (21) 264,000 Btu/hr Input 80 (24) For this example, the pipe diameter 90 (27) must be at least 1/2 in. nominal pipe 100 (30) size and 10 ft (3 m) in length. Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 64: Connect The Power Supply

    Confirm that the electricity is supplied from 120 VAC, 60 Hz power source and is in a properly grounded circuit. □ Confirm that an extension cord or an adapter plug has NOT been used with the water heater. Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 65: Configure Parameter Settings

    0 1 A Example: Display will change from 01A to 01b for Maximum Temperature setting (as shown below). 6. To exit the parameters, press the “A” button for 1 second. Figure 68 Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 66: Service Indicator (Service Soon, 55)

    (see 6.3 Flushing the Heat Exchanger) on the controller again when the water • Service Soon will appear again based on the selected service heater reaches the interval selected in interval. the parameter settings. Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 67: External Pump With Circ-Logic

    4. 1 3 External Pump with Circ-Logic Rinnai SENSEI™ Tankless Water Heaters include Circ-Logic technology that offers the comfort and convenience of instant hot water with the use of an external recirculation pump. Circ-Logic controls the on/off sequence and operation cycles of the external recirculation pump through the programming of the tankless water heater’s parameter settings.
  • Page 68: Post-Water Heater Installation Checklist

    YES to each question. If you answer NO to any question, installation is not complete. Refer to the applicable section in the Rinnai Tankless Water Heater Installation and Operation Manual for additional information. For assistance, contact your local dealer or distributor, or call Rinnai Customer Care at 1-800-621-9419. INSTALLATION LOCATION YES NO □...
  • Page 69: Condensate Drain

    Did you install a manual gas control valve in the gas line to the water heater? □ □ Is the inlet gas pressure within limits? □ □ Did you purge the gas line of any air or debris before connecting the water heater? Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 70: Operation

    – If you cannot reach your gas supplier, call the fire department. • Installation and service must be per- formed by a qualified installer, service agency or the gas supplier. Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 71 Damage and repair due to corrosive compounds in the air is not covered by warranty. Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 72: Operating Instructions

    3. Turn the manual gas control valve located at gas inlet of appliance clockwise to the OFF 2. Turn off all electric power to the appliance if position. service is to be performed. Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 73: Control Panel

    To turn on the beeps, repeat the above steps. Slow Flash (if external pump is installed) Indicates ignition and pump operation. Figure 74 Rapid Flash (if external pump is installed) Indicates pump operation with no Figure 72 ignition. Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 74: Setting The Temperature

    • 3 seconds at 140°F (60°C) • 20 seconds at 130°F (54°C) • 8 minutes at 120°F (49°C) Children, disabled, or elderly are at highest risk of being scalded. Feel water before bathing or showering. Figure 75 Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 75: Performance Data

    3. Use the  (Up) and  (Down) buttons to scroll to the desired information described in the Performance Data Table. Figure 77 4. To exit performance data, repeat step 2 above. 5. When complete, the set temperature appears in the display. Figure 78 Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 76 (Outdoor Units Only) Pump Hours x100 Hours Pump Cycles Exhaust Temperature °F * Refer to the Technical Data Sheet located on the inside front cover of the water heater for additional information. Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 77: Diagnostic Codes

    Sheet located on inside front cover of water heater. or damage to the heat exchanger. • Ensure it is not in forced Hi setting. Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 78 Immediately turn off the water and discontinue the bath fill function. Contact a licensed professional to service the appliance. PC Board • Replace PC Board Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 79 To reset the SS code, push the On/Off button on the temperature controller 5 times in 5 seconds. * See “Electrical Diagnostics” on Technical Data Sheet located on inside front cover of water heater. Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 80: Maintenance

    The vent system should be inspected for flammable vapors and liquids. blockages including snow or other debris or damage. If the vent is blocked and cannot be easily cleared, contact a trained and qualified professional. Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 81 Blue Flame unit. Unscrew the water filter. Rinse the filter Figure 80 to remove any debris. Install the filter and open the isolation valves. Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 82: Cleaning And Inspecting The Air Filter (Indoor Units Only)

    • If the air filter appears to have lint and/or dust build up, follow the cleaning procedure described below. • If the air filter appears damaged, contact a trained and qualified professional for a replacement air filter assembly. Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 83 • Inspect the air filter for any debris that may restrict air flow to the water heater. • If the filter still appears dirty repeat the cleaning steps. • Replace the air filter. 6. Power ON the water heater. Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 84: Flushing The Heat Exchanger

    A. Remove the free end of the drain hose (H3) from the pail. Place in sink or out- side to drain. B. Close service valve (V2) and open shutoff valve (V4). Do not open shutoff valve Figure 83 (V3). Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 85: Draining The Water Heater

    6. Connect power to the water heater. Valve 7. After confirming that the temperature controller is off, turn on the gas supply. Isolation Valve 8. Turn on the temperature controller. Figure 85: Piping Diagram Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 86: Appendices

    In monoxide detectors and signage installed in addition, the installing plumber or gas fitter accordance with the provisions of 248 CMR shall observe that a battery operated or hard 5.08(2)(a)1 through 4. Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 87 COMBINATION SPACE HEATING/POTABLE WATER SYSTEM (For Use In Commonwealth of Massachusetts) Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 88: Wiring Diagram

    7.2 Wiring Diagram Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 89: Ladder Diagram

    7.3 Ladder Diagram Figure 88 Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 90: Pressure Drop And Water Flow Curves

    Water Flow (GPM) Figure 89 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. NOTE: Maximum flow rates may vary based CU199 on set temperature, Delta T and altitude.
  • Page 91: Guidelines For Additional Temperature Controllers

    Connect controller cable to perature controller can be adjusted by the mating terminal at bottom public. right side of PC Board. Wiring illustration (Detailed wiring instructions included with temperature Figure 92 controller package) Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 92: Warranty

    Rinnai’s sole discretion. The warranty claim for product parts and labor may be denied if a component or product returned to Rinnai is found to be free of defects in material or workmanship; damaged by improper installation, use or operation; or damaged during return shipping.
  • Page 93: What Is Not Covered

    Limitation on Warranties No one is authorized 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 warranties of merchantability or fitness for a particular purpose, which extend beyond the description of the warranty herein.
  • Page 94 Notes Notes Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 95 Notes Notes Rinnai Tankless Water Heater Installation and Operation Manual...
  • Page 96 Place Model/Serial # Label Here Located in Manual Bag Rinnai America Corporation 103 International Drive Peachtree City, GA 30269 Tel: 1-800-621-9419 100000504(10) Web: rinnai.us 1/2023 rinnai.ca...

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