Rinnai RCB301AN Installation And Operation Manual
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Rinnai RCB301AN Installation And Operation Manual

Commercial boiler
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  • Page 2 • Installation and service must be performed by a licensed professional. Copyright 2023 Rinnai America Corporation. Rinnai® is a registered trademark of Rinnai Corporation used under license by Rinnai America Corporation. Rinnai America Corporation continually updates materials, and as such, content is subject to change without notice.

  • Page 3: Table Of Contents

    14.3 Wi-Fi Connectivity........................124 14.4 Building Management System (BMS) ..................125 14.5 Remove a Boiler from a Common Vent System ..............128 14.6 Massachusetts State Gas Regulations ..................129 14.7 Warranty ..........................130 Rinnai Commercial Boiler Installation and Operation Manual...

  • Page 4: To The Consumer

    • Read all instructions in this manual before Thank you for purchasing a Rinnai Condensing installing the boiler. The boiler must be Boiler. Before installing and operating this installed according to the exact boiler, be sure to read these instructions instructions in this manual.

  • Page 5: Safety Symbols

    • Always check the water temperature Indicates an imminently hazardous before entering a shower or bath. situation which, if not avoided, will result in personal injury or death. Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 6 Proper venting is required for the safe area. Check batteries monthly and replace operation of this appliance. Failure to them annually. properly vent this appliance can result in death, personal injury and/or property damage. Rinnai Commercial Boiler Installation and Operation Manual...

  • Page 7: Front View

    Specifications • Dimensions • Included Accessories • Optional Accessories The Rinnai Commercial Boiler is a wall- mounted, gas-fired boiler designed to provide heating to the building with the ability to connect an indirect tank for DHW production. Figure 1 Vent...
  • Page 8 Figure 4 Right Side Internal (Main Control Hidden) - RCB301AN shown Thermal Fuse Heat Exchanger Return Water Pipe Air/Gas Mixer Condensate Trap Gas Valve with Throttle Screw Low Voltage Terminal Strip Cascade Module Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 9 Manually interrupts the power to the gas valve. The venturi controls the mixture of air and gas before entering Air/Gas Mixer the burner for combustion. Contains connection points for low voltage input and output Low Voltage Terminal Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 10 DHW Sensor/ Monitors and controls the temperature of an indirect tank. Aquastat Figure 5 Bottom View Webserver Card/ Wi-Fi Module Boiler Name Plate Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 11 0.0 % 7.0 % 7.0% 16.0 % 20.0 % 23.0 % 27.0 % NOTE: The values listed on the above table are the total percentage of boiler input de-rate for each elevation range. Rinnai Commercial Boiler Installation and Operation Manual...

  • Page 12: Installation

    (27 m). 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 Commercial Boiler Installation and Operation Manual...
  • Page 13 Measurements: in. [mm] Figure 6 Bottom view shown on next page. Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 14 CH In (CH Return) 1-1/4 in. NPT 1-1/4 in. CH Out (CH Supply) 1-1/4 in. NPT 1-1/4 in. Condensate Drain 1 in. NPT 3/4 in. Venting (Intake & Exhaust) 4 in. PVC/CPVC 4 in. Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 15 4.8 X 25 MM SS PANHEAD PH2 • Installation and Operation Manual (TAPPED TO INTAKE ADAPTER) (this manual) • User Manual • Warranty Card • Additional technical literature in- cluded inside product box PART #: 809000304 Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 16 The following optional accessories are available for the Rinnai Commercial Boiler. CONDENSATE NEUTRALIZER AIR INLET FILTER Filters and eliminates debris (> 0.5 mm) Neutralizes the condensate from entering the combustion chamber generated by the boiler. for indirect venting (room air) piping.
  • Page 17 BACNET ADAPTER WITH LONWORKS BACNET ADAPTER To establish boiler communication with Building Management System (BMS) through BACnet. PART #: 803000078 To establish boiler communication with Building Management System (BMS) through LonWorks. PART #: 803000080 Rinnai Commercial Boiler Installation and Operation Manual...

  • Page 18: Installation Guidelines

    Propane Installation Code, CSA B149.1. If installed in a manufactured home, the installation must conform with the Manufactured Home Construction and Safety Standard, Title 24 CFR, Part 3280 and/or CAN/SCA Z240 MH Series, Mobile Homes. Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 19 DO NOT obstruct the flow of combustion and ventilation air. DO NOT use substitute parts that are not authorized for this boiler. DO NOT install the boiler on carpeting. DO NOT install boiler outdoors. Rinnai Commercial Boiler Installation and Operation Manual...

  • Page 20: Guidelines

    Consult local water manual. treatment companies for other This section provides information on the treatment solutions to reduce this importance of water quality to the Rinnai affect. Condensing Boiler. The information is • intended to serve as general guidelines only...
  • Page 21 • rinse agent. The Rinnai boiler must be closed off (valved • More generally, it is advised to off) from the rest of the system, or not implement any procedure necessary to connected, while cleaners are in the system.
  • Page 22 The installation must conform with local codes or, in the absence of local codes, with the National Fuel Gas Code, ANSI Z223.1/NFPA 54, or the Natural Gas and Propane Installation Code, CSA B149.1. Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 23 Use the appropriate screws for the vent system. wall construction to secure the mounting bracket to the wall between two studs. Pour approximately 10 ounces (1.25 Figure 11 cups) of water directly into the boiler’s exhaust port. Rinnai Commercial Boiler Installation and Operation Manual...

  • Page 24: Venting Installation Sequence

    6 ft (1.83 m) or as per vent • DO NOT common vent with the vent manufacturer’s instructions or local pipe of any other manufacturer’s boiler code requirements. or appliance. Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 25 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 ground or anticipated snow level. Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 26 2. The first screen of the setup function appears. Press “Boiler Setup” menu to access the screen shown below. 3. Change the parameter “Vent Pipe Material” from “PVC” to “Other” to allow for higher vent temperature (Figure 16). Figure 16 Select “Other” Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 27 The vent termination can be twin pipe (2 separate penetrations, or concentric with a single penetration) Figure 17 Figure 18 Exhaust Exhaust Combustion Combustion air (optional intake filter) Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 28 4PPS-VKC & LB2 4PPS-VK-TCC 4”x6” PolyPro Vertical Termination Kit w/ Terracotta Cap w/ LB2 FSEDVWMT04U 4” Universal Concentric Kit FDVWMT04RH Wall Mount Concentric Kit FSEDVWMT04LH Wall Mount Concentric Kit FDVWT04 Remote Concentric Kit Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 29 4PPS-HTPC 4” Twin Pipe Termination-Polypropylene ISLPT0404 4” Low Profile Wall Termination 196986 System 636 FGV Low Profile Termination Kit – PVC (Beige) System 1738 FGV Low Profile Termination 397986 Kit – PVC (Black) Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 30 4” Black UV Resistant 90 elbow 4PPS-TBC 4” Black Termination Tee FSBS4 4” Bird Screen 23° FSTT4 4” Termination Tee FSTB4 4” Termination Box ISTT0420 4” Termination Tee ISSNKL041 4” Snork ISHT0445 4” Snout 286715 SGV Rain Cap Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 31 PVC to FasNSeal Appliance Adapter Appliance Adaptor for Coupler Style Flue ISAGL0404 Collars–PVC to PP Adapter Appliance Adaptor for Flue Collars with ISAAL0404 Image not shown Hose Clamp– PVC to PP Adapter 4PPSSAD Appliance Adapter-SS Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 32 Pipe Cement and Primer for Intake ANSI/ASTM D2235 ANSI/ASTM D2235 Only NOTICE: DO NOT USE CELLULER (FOAM) CORE PIPE FOR EXHAUST VENTING. Refer to the PVC/CPVC manufacturer for appropriate fittings, solvents or joining methods. Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 33 [2] Permitted only if veranda, porch, deck, or balcony is fully open on a mini- mum of two sides beneath the floor. Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 34 4” (102 mm) Dia. Through all 6” (152 mm) Dia. 4” (102 mm) Dia. Do Not Install U-Bend to Through all Rain Cap “Y” Concentric Fitting 6” (152 mm) Dia. Combustion Combustion Vent Vent Strap Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 35 Min-Max Intake 0 feet (0 meters) - Vent Run 140 feet (43 meters) • 45° elbow is equivalent to 3 ft (1 m) • 90° elbow is equivalent to 6 ft (2 m) Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 36 Install PVC to PP adapter before installing the exhaust air vent pipe. Figure 28 To secure the exhaust air vent pipe, tighten the clamp attached Screwdriver (not supplied) on exhaust air vent using screwdriver. Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 37 Slope horizontal exhaust 1/4 in. per foot towards the boiler. DO NOT slope combustion air pipe towards the boiler. Rinnai cautions against installing the boiler in applications with venting in different CAUTION pressure planes. It is possible to have poor performance with this installation.
  • Page 38 Clearances are in accordance with local installation codes and the is located between two single family dwellings and serves both dwellings. requirements of the gas supplier. [2] Permitted only if veranda, porch, deck, or balcony is fully open on a mini- Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 39 Vertically between terminals Inside Corner IMPORTANT • Installation of Room Air must use listed Category IV venting. • All terminations (horizontal and/or vertical) must terminate 12 in. above grade or anticipated snow level. Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 40 Such chemicals can be found in, but not limited to bleach, ammonia, cat litter, aerosol sprays, cleaning solvents, varnish, paint and air fresheners. Do not store these products or similar products in the vicinity of this boiler. Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 41 75% free area. Under no circumstance should the louver, grill or screen have openings smaller than 1/4 in. Examples: Wood: 10 in. x 12 in. x 0.25 = 30 in. Metal: 10 in. x 12 in. x 0.75 = 90 in. Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 42 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 Commercial Boiler Installation and Operation Manual...
  • Page 43 • Intake screen is available as an accessory. • 3 screws are supplied with intake screen. Secure the intake screen to the Figure 37 intake air vent using 3 of the supplied screws. Supplied screw Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 44 CAUTION Rinnai cautions against installing the boiler in applications with venting in different pressure planes. It is possible to have poor performance with this installation. Figure 38 4 in. 4 in. Schedule 40 Schedule 40 PVC/CPVC Snorkel PVC/CPVC Standard Termination Upside Down "U"...
  • Page 45 To secure the PVC to PP adapter, Figure 40 tighten the clamp attached on Screwdriver exhaust air vent using (not supplied) screwdriver. Ensure that adapter is properly Figure 41 seated. Pipe Then, install the PP pipe from this point. Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 46 A maximum of four Rinnai commercial boilers can be common vented. Follow the following guidelines to assure safe operation: Only common vent boiler of the same size and DO NOT exceed a maximum of four units. DO NOT common vent Rinnai Commercial Boilers with other manufacturer’s products or other models from Rinnai.

  • Page 47: Gas Supply

    (drip leg) Gas Shut Off 8. Perform a leak and pressure test prior to operating Valve the boiler. If a leak is detected, do not operate the boiler until the leak is repaired. Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 48 2 Turn off all electric power to the appliance if service is to be performed. 3 Turn the manual gas control valve located at gas inlet of appliance clockwise to the OFF position. Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 49 60 (18) ANSWER: 70 (21) 80 (24) For this example, the pipe 90 (27) diameter must be at least 1 in. pipe size and maximum 30 ft 100 (30) (9 m) in length. Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 50 Btu/hr 50 (15) Input 60 (18) For this example, the pipe diameter must be at least 3/4 in. nominal 80 (24) pipe size and maximum 20 ft (6 m) 100 (30) in length. Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 51 12. Remove the manometer from the pressure tap located on the gas valve. Ensure that the screw is closed and leak tight after the testing (Torque: 0.9 - 8.9 Lb-in [0.1—1 Nm]). Figure 45 Inlet Manifold Pressure Pressure Port Port Manometer Manometer Rinnai Commercial Boiler Installation and Operation Manual...

  • Page 52: Guidelines

    • Some installations with multiple zone valves may require a differential bypass, which will prevent excessively high flow rates through a single zone when the RETURN SUPPLY other zone valves are closed. Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 53 The relief valve capacity must return line pumping into the boiler. The exceed the BTU/H input capacity of the pump should be sized according to the boiler. pressure losses of the boiler and the related heating system. Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 54 Flow check valve Gauge Boiler Pump Purge Valve Strainer (optional) Air Separator SYSTEM SYSTEM SUPPLY RETURN Closely spaced—tee (may be substituted with LLH) Dirt Trap Ball Valve Water fill valve Expansion tank Backflow Preventer Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 55 The drawing does not imply compliance with local building code requirements. It is the responsibility of the contractor or engineer to ensure the installation is in accordance with all local building codes. Confer with local building officials before installation. Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 56 The drawing does not imply compliance with local building code requirements. It is the responsibility of the contractor or engineer to ensure the installation is in accordance with all local building codes. Confer with local building officials before installation. Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 57 The drawing does not imply compliance with local building code requirements. It is the responsibility of the contractor or engineer to ensure the installation is in accordance with all local building codes. Confer with local building officials before installation. Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 58 NOTE When Rinnai Commercial Boilers are in use with Rinnai air handlers, please reference the air handler Installation and Operation Manual for installation and performance details. Examples of Hydraulic Separation Closely spaced tees and low loss headers are common examples of hydraulic separators and are used to separate the boiler loop from the central heating loop.
  • Page 59 The Rinnai Commercial Boiler does not have an included boiler pump. An external boiler pump must be installed and sized to the flow rate and pressure drop through the boiler, system piping, and system components. Larger systems, or systems with large pressure drops, should incorporate a form of hydraulic separation, such as closely spaced tees or a low loss header.
  • Page 60 • DO NOT place any other valve or terminate 6 in. (152 mm) above drains shutoff device between the pressure where discharge will be clearly visible. relief valve and the boiler. Rinnai Commercial Boiler Installation and Operation Manual...

  • Page 61: Guidelines

    • A condensate neutralizer kit is available from Rinnai. The kit allows condensate to flow through neutralizing media that raises the pH • Do not plumb the condensate drain with of the condensate to a level that will help the pressure relief valve; both must be prevent corrosion of the drain and public plumbed independently to drain.

  • Page 62: Indirect Tank Control Options

    20 seconds at 130°F (54°C) tank, the quicker the tank will heat up. • 8 minutes at 120°F (49°C) Children, disabled, or elderly are at highest risk of being scalded. Feel water before bathing or showering. Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 63 RIB relay must be used. Ensure to select the proper control parameter when using tank sensor or aqua-stat. Ensure to select the proper control parameter when piping indirect tank on primary loop or system loop. Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 64 The drawing does not imply compliance with local building code requirements. It is the responsibility of the contractor or engineer to ensure the installation is in accordance with all local building codes. Confer with local building officials before installation. Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 65 The drawing does not imply compliance with local building code requirements. It is the responsibility of the contractor or engineer to ensure the installation is in accordance with all local building codes. Confer with local building officials before installation. Rinnai Commercial Boiler Installation and Operation Manual...

  • Page 66: Electrical Connections

    Consideration should be given to protect the switch against tampering. If there is more than one door to the boiler room, a switch should be located at each door. Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 67 S20 UX2 - ANALOG OUTPUT (+) S21 UX2 - ANALOG OUTPUT (-) S22 UX3 - ANALOG OUTPUT (+) S23 UX3 - ANALOG OUTPUT (-) S24 24 VDC OUTPUT (+) S25 24 VDC OUTPUT (-) Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 68 2 is disabled from the factory, CAUTION in order to use this connection, a • Rinnai recommends the use of spade connectors or parameter will need to be enabled in the similar components for wiring to the screw control (refer to the control section).
  • Page 69 Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 70 Confirm that the electricity is supplied from a 120 VAC, 60 Hz power source and is in a □ Confirm that an extension cord or adapter plug has NOT been used with the boiler. □ Confirm connection terminals are connected correctly. Rinnai Commercial Boiler Installation and Operation Manual...

  • Page 71: Safety Precautions

    6 Error code 118 code will be present until the boiler senses at least 12 PSI (83 kPa). 7 Check the heating system for leaks. 8 Begin the deaeration process shown in the next section (“10.3 Deaeration Process”). Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 72 SERVICE page, the control will prompt the user to select the access level and enter password. The password for Installer is 9419. The technician and Engineer user levels can ONLY be accessed by a Rinnai employee. Use the Pump Service Mode to manually energize each pump individually to remove air from the system.
  • Page 73   Have you confirmed the end of the condensate drain pipe is open to atmosphere?   Has an air gap been installed in the condensate drain line? Rinnai Commercial Boiler Installation and Operation Manual...

  • Page 74: Post-Installation Checklist

    Did you confirm that an extension cord or an adapter plug has NOT been used with the   boiler? YES NO COMMISSIONING   Was the boiler filled to 20 - 70 PSI?   Was the deaeration process performed on the boiler? Rinnai Commercial Boiler Installation and Operation Manual...

  • Page 75: Start-Up Information

    Above 87 PSI, error code 118 will be present on the controller display. − The maximum pressure permitted inside the heat exchanger is 160 PSI. − The pressure relief valve supplied with the boiler is rated to 75 PSI. Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 76 Table: Home Screen ITEM DESCRIPTION FUNCTION The Rinnai logo will return the user to the home page (shown). This page will RINNAI provide information regarding the boiler operation. This page will allow the user to adjust and customize parameters, such as outdoor SETUP reset curve(s), and others.
  • Page 77 + this parameter. For instance if DHW temperature setpoint Temperature Offset for is 120°F [49°C] and this parameter is set to 36°F [20°C] the boiler supply setpoint for DHW will be 156°F [69°C]. Range: -4°F [-20°C]—108°F [60°F], Default: 36°F [20°C] Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 78 Range: -40°F [-40°C] - Outside Temperature Maximum; Default: 5°F Minimum (CH-1) [-15°C] This parameter the sets the maximum outside temperature for the outdoor reset Outside Temperature curve. Range: Boiler Temperature Minimum - Warm Weather Shutdown; Default: Maximum (CH-1) 68°F [20°C] Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 79 Unit Heater 130 - 140°F 160 - 180°F Base Board Convectors 100 - 140°F 140 - 180°F Cast Iron/Panel Radiator 90 - 120°F 140 - 180°F Undermount Radiant 100 -120°F 120 - 150°F Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 80 This function will alert the boiler about an outside freeze condition based on the set value. Protection The boiler will monitor the supply temperature before activating the freeze protection Setpoint mode. Range: 40°F [4] - 60°F [16]. NOTE: Requires Technician or Engineer level for access. Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 81 When a sensor is accidentally selected and aquastat is used, the boiler will present an error code when aquastat is closed. Range: Aquastat - Sensor; Default: Aquastat Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 82 NOTE: It is critical to ensure low temperature zones are protected via mixing valve to prevent overheating due to higher setting of boiler supply temperature for DHW. Range: On - Off; Default: Off Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 83 State; 0.5V - 1V - Boiler in Off state, standby, pre-purge, post-purge...; 1V - Function Output UX3 10V—represents 0% - 100% modulation. Range: None, Boiler Pump, DHW Pump, CH-1 Pump, CH-2 Pump, Burner Modulation; Default: Burner Modulation. Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 84 This parameter sets the time for leading source rotation is a cascade system. The boiler loads in a cascaded system can be influenced by defining the order Cascade Rotation Time of a lead lag boiler. Range: 10-990 Hours; Default: 50 Hours Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 85 (always). Range: Auto-Always; Default: Auto. This function will add and offset value to the boiler setpoint above the cascade Setpoint Compensation system sensor temperature setpoint. Range: 1-100; Default: 36°F [20°C] Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 86 This function is available in case there is a need to forget the current Wi-Fi Forget Network connectivity and connect to a new Wi-Fi. Press the icon to forget network. Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 87 Metric (C, Bar, kWh), or vice-versa. Range: Imperial - Metric Off; Default: Imperial Ethernet Settings This function can ONLY be accessed by a Rinnai employee. This function can be used to logout of SETUP or SERVICE pages, and to change User Logout user level once logged in.

  • Page 88: Maintenance

    Sets the boiler maintenance interval based on burner run hours. Last Maintenance Range: 100 - 10,000 Hours; Default: 1500 Hours Burner Cycles Since Sets the boiler maintenance interval based on ignition cycles. Last Maintenance Range: 100 - 65,500 Cycles; Default: 9000 Cycles Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 89 Room thermostat CH-2 or the demand for heat is off. The state will change to closed when a room thermostat is connected and calling for heat demand. Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 90 The air pressure switch is normally closed during normal operation. The switch Air Pressure Switch will open in case of a vent or condensate blockage and the control will generate an error code. Gas Pressure Switch Not applicable for 301 and 399 models Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 91 Displays the indirect storage tank active setpoint Temperature—Setpoint Displays the actual indirect storage tank temperature. NOTE: This will ONLY Indirect Storage Tank display a value when a temperature sensor is being used to control the indirect Temperature—Actual storage tank. Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 92 DHW Pump (Q3) Speed Not used Displays the value of 0-10V output signal for UX2 connection Displays the value of 0-10V output signal for UX3 connection Displays the PWM value in % for P1 connection. Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 93 Once the error has been cleared the line will change color from gray to green. Burner Hours Run Shows total burned run hours Burner Starts Stage 1 Shows total ignition cycles Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 94 Displays the run hours for DHW mode Reset Error Code This will clear the error history (ONLY available for Rinnai employees) List of Error Codes This page accumulative error codes. This list can ONLY be reset by a Rinnai employee. DESCRIPTION FUNCTION VIEW - Info...
  • Page 95 Once the user leaves the screen the graph will clear and start from the current time. There are four different graphs (Temperatures, Pumps, Fan Speed / Ion. Curr., Cascade, and Water Pressure), and ONLY one of the graphs can be viewed at once. Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 96 By clicking on Normally Closed (NO), this will close the room thermostat connection and the boiler will get a demand for heat. NOTE: It is very critical to return these values to the default setting (NO) once the testing is completed. Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 97 To edit previous messages, double click on the desired message. It will be highlighted in blue and confirma- tion will po-up. Click on Modify Message to make changes to current message, or Delete Message to delete current selected message. Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 98 If everything is set correctly, use the save sensor option on SETUP - system setup to configure this sensor. 4- Replace the supply temperature sensor if malfunction is detected. 5- If the issue persists, replace the main control board Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 99 1- Check to ensure the cascade addresses for the units in the cascade system are unique. For instance if there are one or more units set as Master, the LPB address collision error code will be displayed. Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 100 Check for water leaks in the system piping. 2- If the pressure in the system is still below 16 PSI (1.2 bar), replace the water pressure sensor. Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 101 6- Check for vent or condensate blockage. 7- If the problem persists, remove the burner door and inspect the ignition electrodes (check for gaps and distance to the burner. Clean if necessary) Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 102 4- If the issue persists check replace the air pressure switch. This error code requires a manual reset Unit in parameteriza- 1- Unit in parameterization mode (301) tion mode 2- Unit in parameterization mode (770 - parameter stick) Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 103 (see wiring diagram for details). 3. The temperature values on the main screen are all zeros. Ensure the webserver card/Wi-Fi Module is properly connected to the main controller and is getting power. Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 104 Temperature [°F] Resistance [Ω] 13034 9889 7578 5861 4574 3600 32555 2857 25339 2284 19873 1840 15699 1492 12488 1218 10000 1000 8059 6535 5330 4372 3605 2989 2490 2084 1753 1481 1256 1070 Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 105 The maximum firing rate is 100% of modulation and the minimum firing rate is 0% of modulation. Figure 58 Combustion Analysis Port and Plug Access to Gas Valve Adjustment Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 106 Make adjustments to the minimum Manometer firing rate first, and then proceed to the maximum firing rate adjustment. Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 107 (default is + 20°F [11°C]). For instance if the indirect tank is set to 120°F, the boiler will supply 140°F to the indirect tank coil. Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 108 150 mV. NOTE: It is critical to keep the 0-10V input voltage wiring away from the line voltage wiring to avoid induced voltage which may cause the boiler to be energized when not desired. The following graphs are linear representation of the 0-10V operation. Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 109 The units are set from the factory to rotate every 50 hours in order to balance the run hours. All other parameters in the cascade setup are optional depending on the system application. Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 110 500°F [260°C] , and 605°F [318°C], respectively. These switches prevents overheating in case of abnormal operation of the appliance or premature deterioration of the insulation disk located on the back of the combustion chamber. Rinnai Commercial Boiler Installation and Operation Manual...

  • Page 111: Owner Maintenance

    Verify the boiler is free from any abnormal situations, such as diagnostic error codes, loud noises, leakage or other potential issues. • Check that the pressure on the controller display or external pressure gauge indicates 20-70 psi (138-483 kPa). Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 112 Draining Water When the system will be shutdown for a long period of time (seasonal shutdown), close the shutoff valves below the boiler and drain the boiler to protect it from potential freeze damage. Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 113 Condensate Trap Cleaning: • Inspect the condensate drain assembly inside the boiler and your external drain system. • Remove any debris that may be present in the condensate removal system. Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 114 The plumbing 46°F [8°C] + Boiler Offset 9°F [5°C] + Boiler lines should also be blown out via compressed Differential 20°F [11°C]. air. Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 115 Figure 64 Fiber Gasket Brush Burner Door Gasket (Not Provided) Burner Door WARNING If the gaskets are damaged DO NOT reuse, the gaskets must be replaced. Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 116 Burner Door Nuts Burner Inlet Chanel Screws Electrodes Screws (M4) Torque 44.5 Lb-in (5 Nm) 31 Lb-in (3.5 Nm) 22 Lb-in (2.5 Nm) Figure 66) Electrodes Burner Inlet Burner Door Screws Chanel Screws Nuts Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 117 Figure 67 Figure 68 INLET OUTLET Clamp Floating ball (acts as a check valve) Stopper O-ring WARNING If the gaskets/O-rings are damaged DO NOT reuse, they must be replaced. Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 118 To reset the error, press the reset button located under the boiler . The boiler starts up. Figure 70 Reset Button Replace the boiler front panel. The boiler may now go back into normal operation. Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 119 Isolate the boiler from the CH system. boiler is added to the system. The Rinnai boiler must be isolated from the Fill the CH system with an approved system while the system is flushed. No cleaner and circulate through the system.
  • Page 120 Push the front panel up until the top mounting holes are cleared from the standoffs as shown in Figure 72. Place the removed front panel at a safe location until it can be remounted after the service. Figure 72 Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 121 Push the side panel up to remove the slot lock from cutout (slot locks are located at 4 places) (C in Figure 74). Pull the side panel out and place it at a safe location until it can be remounted after the service (D in Figure 74). Figure 74 Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 122 Remove two screws holding the controller backet as shown in figure below (place screws at safe location for reuse) Figure 75 Screws Rotate down the controller bracket with controller to gain access of connections ports. Figure 76 Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 123 Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 124 The Rinnai Commercial Boiler is shipped out of the factory with built-in Wi-Fi. In order to connect the unit to Wi-Fi follow the steps below: Access the boiler SETUP page under Wi-Fi sub-menu to enable Wi-Fi. Use a smart phone, tablet, or computer with Wi-Fi access and search for the device, the name should be Boiler - xxxxxxxxxxxx (Figure A).
  • Page 125 Parity none - 2 stop bits; Parity eve - 1 stop bits; Parity even - 2 stop bits; Parity odd - 1 stop bits; Parity odd - 2 stop bits). Apply Settings: Click on apply settings button to save parameters after adjustments. Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 126 8749 THERMOSTAT STATE CH2 DE- 8779 0-10V INPUT H3 7854 WATER PRESSURE SENSOR H1 7841 WATER PRESSURE VOLTAGE 7840 AIR PRESSURE SWITCH H7 7874 GAS PRESSURE SWITCH H6 7872 BURNER RUN HOURS 8330 Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 127 CASCADE FOLLOWER 7 INFO 8115 WEB SERVER CARD VERSION x1000 LMS PARAMETER VERSION 1 6230 LMS PARAMETER VERSION 2 6231 IMPERIAL/METRIC SELECTION NOTE: For the switches state: 0 - Open ; 1 - Closed Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 128 Chapter 13 of the National Fuel Gas Code, ANSI Z223.1/NFPA 54, and/or the Natural Gas and Propane Installation Code, CAN/CSA B149.1. Rinnai Commercial Boiler Installation and Operation Manual...
  • Page 129 INSPECTION. The state or local gas inspector of the side wall horizontally vented gas fueled equipment shall not approve the installation unless, upon inspection, the inspector observes carbon monoxide detectors and signage installed in accordance with the provisions of 248 CMR 5.08(2)(a)1 through 4. Rinnai Commercial Boiler Installation and Operation Manual...

  • Page 130: 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;...
  • Page 131 Limited Warranty. If you purchase a Rinnai product from an unauthorized dealer, or if the original factory serial number has been removed, defaced or altered, your Rinnai warranty will not be valid.

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