Rinnai REU-KM3237FFUD-E Installation And User Manual
Rinnai REU-KM3237FFUD-E Installation And User Manual

Rinnai REU-KM3237FFUD-E Installation And User Manual

Continuous flow water heater
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Installation and User Manual
REU-KM3237FFUD-E
Infinity Condensing 32i
REU-KM3237WD-E
Infinity Condensing 32e
REU-KM3237FFUDHD-E
Infinity HDC 1500i
REU-KM3237WDHD-E
Infinity HDC 1500e
Continuous Flow Water Heater
Important.
Read these instructions carefully before attempting installation or use of
this appliance. All work must be carried out by competent persons.

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Summary of Contents for Rinnai REU-KM3237FFUD-E

  • Page 1 Installation and User Manual REU-KM3237FFUD-E Infinity Condensing 32i REU-KM3237WD-E Infinity Condensing 32e REU-KM3237FFUDHD-E Infinity HDC 1500i REU-KM3237WDHD-E Infinity HDC 1500e Continuous Flow Water Heater Important. Read these instructions carefully before attempting installation or use of this appliance. All work must be carried out by competent persons.
  • Page 2 Quality System Standard ISO 9001 - 2000 The Design, Development, and Manufacture of Gas Water Heating Appliances done under Rinnai’s Quality Management System is certified under the Quality Management System Standard ISO 9001. Registration Number JQ0003D Registered since: February 1994...
  • Page 3: Table Of Contents

    User Instructions.....................4 Features and Benefits………………………………………………..………….5 Important Information…………………………………………...……..………..6 Operation without Remotes……………………………………………….……8 Status Monitor....................8 Temperature Controls…………………………………………….…………..…9 Error Messages…………………………………………………………………14 Restarting the Rinnai Water Heater………………………………………….16 Caring for the Infinity……...……………………………………………………16 Installation Instructions…………………………………………….………..…………17 UK Installation Instructions…………………………………………………….18 Unpacking Rinnai Water Heater…………………………….………………...19 Operation ....……………………………………………...……………...20 Main Components………………………………………………..……………..22 Installation Instructions……………………………………………….………...23 Flue Requirements……………………...…….………………………………..28...
  • Page 4: User Instructions

    USERS INSTRUCTIONS The following instructions are designed for the user of the water heater. The user may not install or adjust the appliance in any way that requires the removal of the front cover of the unit. To remove the front cover of the unit you must be certified competent to do so.
  • Page 5: Features And Benefits

    Congratulations on purchasing the Technologically Advanced, Temperature Controlled, Rinnai Hot Water System. Rinnai water heaters will NEVER RUN OUT of hot water. As long as electricity, water, and gas supplies are connected, hot water is available when hot water taps are open.
  • Page 6: Important Information

    This approach can be extremely off tightly. valuable because it requires a one time action for a long term Do consider setting your Rinnai reduction in risks of scalds. Water Heater at a maximum This type of automatic protection temperature of 50°C.
  • Page 7 IMPORTANT INFORMATION Always check water temperature before Hot water may go cold without warning at use. very low water flows (less than 3 l/min.) OFF! Refer to warning about hot water on page 6 for important safety information. The delivered water temperature is If freezing temperatures are expected, turn controlled automatically.
  • Page 8: Operation Without Remotes

    OPERATION WITHOUT REMOTES Rinnai Infinity products have no pilot light and operate automatically as soon as water flow is sensed. The burner ignites with electronic ignition and the flame extinguishes as soon as water flowing through the appliance stops. Turn On by opening the hot water tap...
  • Page 9: Temperature Controls

    Adjustments to the operation of your hot water unit can be made with any of the Temperature Controllers. Each Temperature Controller can be individually programmed. Up to four Universal and/or Deluxe Temperature Controllers can be fitted with Rinnai water heaters. Universal Controllers allow temperature selection only and one comes as standard with the water heaters.
  • Page 10: Temperature Controls - Operating

    TEMPERATURE CONTROLS - OPERATING Remote temperature controllers provide control over the water temperature. Rinnai water heaters can be operated with 1, 2, 3, 4 or no temperature controllers. Each time a button is pressed, a BEEP will sound. The BEEP sound can be muted by depressing the Temperature Controller Up and Down buttons simultaneously for more than 3 seconds.
  • Page 11 COLD The Digital Monitor will go out. If hot water taps are opened when the Rinnai Infinity is off, cold water will flow from the taps. If the system is to be left off over the winter be sure to drain it down if there is a possibility of freezing temperatures.
  • Page 12 TEMPERATURE CONTROLS - OPERATING Using 2 or more Universal Temperature Controllers. Switching the system ON. The hot water system and all controllers can be switched ON and OFF from any controller by pressing the On/Off button as shown. When the system is turned ON the water temperature display will be lit.
  • Page 13 TEMPERATURE CONTROLS - INFORMATION Do not push the ON/OFF button on the Temperature priority cannot be switched Master controller after transferring priority to another controller when the water is of temperature selection to a Secondary flowing through the water heater. controller as the system will shut down.
  • Page 14: Error Messages

    ERROR MESSAGES Rinnai water heaters have the ability to check their own operation continuously. If a fault occurs, an error code will flash on the Digital Display (and on the Status Monitor) if you have temperature controllers installed. This assists with diagnosing the fault, and may enable you to overcome a problem without a service call.
  • Page 15 ERROR MESSAGES Troubleshooting without controllers If you have not installed temperature controllers and experience the following symptoms, please carry out the suggestions below. If symptoms continue, please contact Rinnai for advice. Fault Remedy Heater does not attempt Check the power is on at the heater.
  • Page 16: Restarting The Rinnai Water Heater

    If following the above procedure does not reset the heater switch it on and off at its main supply, and then go through these steps again. If heater is still not working call your local service agent or Rinnai for assistance. CARING FOR THE INFINITY...
  • Page 17: Installation Instructions

    If the information in this manual is not followed exactly a fire or explosion could result. This manual must be read in its entirety before installing the appliance. If you are unsure of any point contact Rinnai or your supplier.
  • Page 18: Uk Installation Instructions

    UK INSTALLATION INSTRUCTIONS IMPORTANT INFORMATION This appliance may only be installed by someone certified competent to do so. At the time of printing the only people deemed competent to install this appliance are those that are CORGI registered for this type of appliance in this type of location who have a current ACS certificate.
  • Page 19: Unpacking Rinnai Water Heater

    A heater accessories pack is inside the carton. One remote control is supplied with the Infinity range of water heaters. Remote controllers are not supplied with the Rinnai HD range of heaters because they are commercial units. If you require controllers in commercial situations they are compatible with the HD range and available from Rinnai UK or your supplier.
  • Page 20: Operation

    OPERATION - SCHEMATIC Infinity Condensing 32i and HDC1500i Infinity Condensing 32e and HDC1500e...
  • Page 21 OPERATION - PRINCIPLE HOT WATER SUPPLY OPERATION Ignition Press ON/OFF Button of Remote Controller to turn on unit and the remote controller display and priority LED will light up. When a hot water tap is opened the Water Flow Sensor revolves and sends a pulse signal to the Printed Circuit Board (PCB.) When the PCB detects water flow it compares the measured temperature to the temperature setpoint If required it...
  • Page 22: Main Components

    MAIN COMPONENTS 1. Gas Control Unit 1.1 Modulating Valve This device is used by the PCB to adjust the volume of gas to the burner in proportion to the volumetric flow rate of water in order to maintain a supply of constant temperature hot water amid changes in water flow rates and incoming temperatures.
  • Page 23: Installation Instructions

    Rinnai can not be held responsible for any consequential water damage so it may be necessary to fit a drain...
  • Page 24 See the pressure chart on page 46. Contact Rinnai or your supplier for 'gravity fed' or 'low pressure' hot water installations.
  • Page 25 UK INST. INSTRUCTIONS - CONNECTIONS Water Connection. For all closed systems (with flow and return or tank) the system must incorporate an unvented kit with the components shown below. The safety relieve valve must discharge safely into a suitable drain via a tundish. Expansion Safety Vessel...
  • Page 26 INSTALLATION INSTRUCTIONS - SCHEMATICS Single Infinity Direct Flow Direct feed to the hot water outlets. Mains is fed directly into the unit. Use a strainer, but a check valve is not required. Standard domestic or small commercial set up. Used with controllers to alter the temperature at the point of use (only using hot tap) or temperature set on the dip switches for the maximum needed at any outlet, and mixed down by TMVs or manual tempering valves.
  • Page 27 BS 5440 allow room sealed appliances to be installed in spaces and rooms, including bedrooms, without ventilation. If a Rinnai Infinity internal water heater is installed in a compartment it must have the following amount of permanent ventilation.
  • Page 28: Flue Requirements

    The flue must be clear of obstructions and shrubbery. Concentric Flues The Rinnai Infinity Condensing 32i and HDC1500i are internal units which may only be installed with the approved Rinnai Infinity and HD flue kit provided. These instructions only apply to coaxial Rinnai Flues. If in doubt contact Rinnai UK.
  • Page 29 Improper installation of flue systems and components, or failure to follow all installation instructions can result in property damage or serious injury. The Rinnai Infinity Condensing 32i / HDC1500i is for internal installation in conjunction with the Rinnai flue system...
  • Page 30 UK FLUE REQUIREMENTS - POSITION Dimension Terminal Position Distance Directly below an opening, air brick, opening windows, etc. 300mm Above an opening, air brick , opening window, etc. 300mm Horizontally to an opening, air brick , opening window, etc. 300mm Below gutters, soil pipes or drain pipes.
  • Page 31: Condensate Disposal

    For this reason copper tube and fittings MUST NOT be used as it will corrode. Instead, Rinnai recommend plastic pipes and fittings such as Unplasticised Polyvi- nyl Chloride (UPVC) or Polyethylene (PE) which is commonly used for irrigation piping.
  • Page 32 CONDENSATE DISPOSAL...
  • Page 33: Temperature Controls

    TEMPERATURE CONTROLS - INSTALLATION General Information Commercial installations do not generally have controllers installed. These installations usually have one permanent set temperature that is constant at all times. The public should not have access to alter the temperature in these situations. These installations do not require controllers as the temperature can be set by a series of dip switches on the PCB.
  • Page 34 TEMPERATURE CONTROLS - INSTALLATION Universal Temperature Controller - MC-91 1. Determine the most suitable position for the temperature controller. 2. Drill 3 holes in the wall (fig.1), one for the cable and two for the securing screws. Fit wall plugs if needed and ensure controller is level. 3.
  • Page 35: Ez Connect

    EZ CONNECT EZ Connect Installation The EZ Connect allows the installation of two Infinity water heaters to be controlled by one remote controller without PAM valves or a MECS. This will allow temperature control through use of a single remote, while error messages will be displayed NEW FEATURE on the status monitor.
  • Page 36: Testing

    TESTING 1. Purge gas, hot water and cold water supply lines before making the final connection of the water heater. Swarf in either the gas or water supplies may cause damage. 2. Turn on gas and cold water supplies. 3. Test for water leaks and gas escapes near the unit. 4.
  • Page 37: Gas Pressure Setting

    Contact Rinnai before attempting to alter the gas pressure if you are unsure of what to do. Incorrect adjustment can void the warranty.
  • Page 38 (Fig. 4) as required to the pressure above. Replace rubber access plug and seal it shut. 13. Set the Rinnai Infinity to 'Forced High' combustion by setting no. 7 and no. 8 dipswitches to 'ON'. (Fig.5) Ensure maximum water flow.
  • Page 39: Dip Switch Setting

    DIP SWITCH SETTING Dip Switch Positions Explained OFF ON SW1 Flue Length (Off for 32e) LEGEND: Temperature Black Section indicates Temperature position of dip switch. Temperature Temperature OFF ON OFF ON Computer Programming Forced Combustion Forced Combustion OFF ON SW2 COMPUTER PROGRAMMING Gas Type OFF ON SW1...
  • Page 40 DIP SWITCH SETTING Infinity Condensing 32i / HDC1500i and Infinity Condensing 32e / HDC1500e Temperatures - With or Without Remotes Connected on SWI on SWI on SWI on SWI 40 deg C 42 deg C 50 deg C 55 deg C (Infinity factory setting) HDC1500i and HDC1500e Temperatures - Remotes Connected...
  • Page 41: Dimensions

    DIMENSIONS...
  • Page 42: Technical Details

    TECHNICAL DETAILS Infinity Model Inf. Cond.32e/HDC1500e Inf. Cond.32i/HDC1500i Units Installation External Internal G20 Nat Gas Press Low 1.81 2.26 mbar G20 Nat Gas Press High 5.64 6.28 mbar G25 Nat Gas Press Low 2.35 2.81 mbar G25 Nat Gas Press High 7.40 8.00 mbar...
  • Page 43: Flow Chart

    FLOW CHART...
  • Page 44: Wiring Diagram

    WIRING DIAGRAM...
  • Page 45: Diagnostic Points

    DIAGNOSTIC POINTS...
  • Page 46: Water Flow Characteristics

    WATER FLOW CHARACTERISTICS...
  • Page 47: Letter Of Compliance

    LETTER OF COMPLIANCE...
  • Page 48: Ce Certificate

    CE CERTIFICATE...
  • Page 49: Commissioning Checklist

    COMMISSIONING CHECK LIST...
  • Page 50: Uk Warranty

    65°C and do not include installations incorporating storage cylinders or building flow and return systems. The warranty shall apply to any Rinnai water heater from the Infinity or HDC range used in this way. Definition of Commercial Use.
  • Page 51 WHAT WILL RINNAI DO? Rinnai will repair or replace the product or any part or component that is defective in materials or workmanship, except as set forth below: All repairs must be performed using genuine Rinnai parts. All repairs or replacements must be performed by a registered gas engineer.
  • Page 52: Specification

    * Separate models available for Natural gas or LPG fuel. ** Minimum flow rate based on temperature set point and inlet conditions. Rinnai are continually updating and improving products and reserve the right to alter model specifications without prior notice.
  • Page 53: Contact

    CONTACT UK LTD. 9 Christleton Court Manor Park Runcorn Cheshire WA7 1ST Tel. 01928 531870 Fax. 01928 531880 E-mail. info@rinnaiuk.com Web. www.rinnaiuk.com HEATER DETAILS Model Number _____________________________________________ Serial Number _____________________________________________ Date of Purchase _____________________________________________...
  • Page 54 U290-671(00) v2. 09/07/14...

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Reu-km3237wd-eReu-km3237ffudhd-eReu-km3237wdhd-e

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