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Rinnai Infinity 20 External Operation And Installation Manual

Continuous flow and temperature control instantaneous gas water heater
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Continuous flow and temperature control
instantaneous gas water heater
Operation and installation manual
REU-A2024WD-E - Infinity 20 external - 20e
This appliance must be installed in accordance with:
• Manufacturer's installation instructions;
• National laws, local regulations and municipal building codes.
This appliance must be installed and maintained by competent person.
Read the instructions before attempting installation or use of this appliance.

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Summary of Contents for Rinnai Infinity 20 External

  • Page 1 Continuous flow and temperature control instantaneous gas water heater Operation and installation manual REU-A2024WD-E - Infinity 20 external - 20e This appliance must be installed in accordance with: • Manufacturer’s installation instructions; • National laws, local regulations and municipal building codes.
  • Page 2 Quality system standard ISO 9001 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. Certified by: Japan Gas Appliances Inspection Association - JIA-QA Center...
  • Page 3 Dear Customer, our compliments for having chosen a Rinnai top-quality product, able to assure well-being and safety for a long period of time. As a Rinnai Customer you can also count on a qualified after-sales service to guarantee a constant efficiency of Your appliance.
  • Page 4 WARRANTY Dear Customer, Our compliments for having chosen a Rinnai product. The standard Rinnai warranty does not affect the terms of the legal warranty on customer’s good and relates to Rinnai products purchased. WHAT IS COVERED? The warranty covers any defects in materials or workmanship when the product is installed and operated according to Rinnai installation instructions, subject to the terms within this limited warranty document.

  • Page 5: Table Of Contents

    1.3 WATER TEMPERATURE CONTROL ....................... 12 1.3.1 MAXIMUM DELIVERY TEMPERATURES ................... 12 1.3.2 OPERATION WITHOUT WATER CONTROLLERS ..............12 1.3.3 RINNAI WATER CONTROLLERS ....................12 1.3.4 WATER CONTROLLER COMBINATIONS & CONFIGURATIONS..........13 1.3.5 UNIVERSAL WATER CONTROLLER (MC-601) OPERATION ..........14 1.4 TROUBLE SHOOTING ..........................

  • Page 7: User's Instructions

    1. USER’S INSTRUCTIONS The following section provides instructions for proper use of the product. This section is intended for the use by qualified technical personnel and end users.

  • Page 8: Features And Benefits

    Congratulations on purchasing the latest technology temperature controlled Rinnai continuous flow water heating system. The Rinnai continuous flow water heater products NEVER RUN OUT of hot water. Whilst electricity, water and gas supplies are connected, hot water is available whenever hot water taps are open.

  • Page 9: Important Safety Information

    Do not modify this appliance. Do not attempt to repair, replace or open sealed parts or disassemble the appliance: improper adjustment, alteration, service or maintenance could significantly affect the safety of the product. Contact the Rinnai service if you detect any unusual condition. Use original parts to repair the appliance.

  • Page 10: Operational Safety Information

    Do not store flammable objects near the appliance: it could cause a product failure or fire. Do not spray aerosols in the vicinity of this appliance while it is in operation. Check that the appliance is supplied with the correct gas type and pressure according to the data plate: ensure that the gas in use matches with the gas indicated on the data plate.
  • Page 11 If water pipes are frozen, there would not be water flow in the system. Use a heat source (e.g. hair dryer) to unfreeze the frozen components and pipes. Before using the appliance after defrosting contact the Rinnai service to verify possible damages.

  • Page 12: Water Temperature Control

    1.3.2 OPERATION WITHOUT WATER CONTROLLERS Rinnai continuous flow water heater products do not use a pilot light. When installed and operated, the opening of any hot water tap will automatically start the appliance. Once water is flowing through the appliance the burner will be ignited by electronic ignition.

  • Page 13: Water Controller Combinations & Configurations

    Universal water controllers allow temperature selection. Deluxe water controllers allow temperature selection, have a clock function and, Deluxe Bathroom water controllers, have a shower saver/bath fill function. Contact Rinnai for further information regarding Deluxe water controllers or visit www.rinnai.it 1.3.4 WATER CONTROLLER COMBINATIONS & CONFIGURATIONS A maximum of 4 water controllers can be fitted.

  • Page 14: Universal Water Controller (Mc-601) Operation

    1.3.5 UNIVERSAL WATER CONTROLLER ( MC - 601 ) OPERATION WATER HEATER 'IN USE' INDICATOR Indicates that a water heater is delivering hot water. DIGITAL MONITOR Indicates the temperature selected. Error messages flash in event of a fault. TEMPERATURE CONTROL BUTTONS CONTROLLER PRIORITY INDICATOR Used to select water temperature.
  • Page 15 Loc function To prevent tampering and increase the safety level of the product, especially for children, it is possible to lock the control panel. To lock the panel it is necessary to press, and keep pressed for about five seconds, the ‘Priority’ keys and the key to increase the temperature (up arrow) (Fig.1).

  • Page 16: Trouble Shooting

    1.4 TROUBLE SHOOTING Rinnai continuous flow water heaters have a self diagnostic capability. If a fault occurs, an error code will flash on the digital monitor of your water controllers. This assists with diagnosing the fault, and may enable you to overcome a problem without a service call.

  • Page 17: Troubleshooting Without Water Controllers

    Rinnai has a service and spare parts network with personnel who are fully trained and equipped to give the best service on your Rinnai appliance. If your appliance requires service, please call our national help line.

  • Page 19: Installer's Instructions

    2. INSTALLER’S INSTRUCTIONS The following section provides specific instructions for proper installation of the product. This section is intended for the use by qualified technical personnel.

  • Page 20: Installation Warnings

    The Rinnai Infinity is conceived as continuous flow water heater. The appliance is suitable for domestic use to produce hot water. The appliance must be power plugged, gas fuelled and connected to a hot water delivery system suitable for the water heater power and features.

  • Page 21: Unpacking The Water Heater

    Prior to use make sure that the water heater is set up for the correct type of gas and that the appliance is intact. If the appliance is clearly damaged or you have doubts do not install the water heater and contact your supplier or Rinnai immediately for further information. Together with the appliance, in the packaging, you can find the following:...

  • Page 22: Main Components

    2.4 MAIN COMPONENTS NAME NAME GAS CONTROL ASS'Y CASING ASS'Y FRONT PANNEL ASS'Y WATER FLOW SENSOR FLUE OUTLET GAS CONNECTION WATER FILTER ASS'Y OVERHEAT SWITCH HEAT EXCHANGER WATER INLET THERMAL FUSE WATER FLOW CONTROL DEVICE ELECTRODE PRESSURE RELIEF VALVE FLAME ROD HOT WATER OUTLET MAIN BURNER OUTGOING WATER THERMISTOR...

  • Page 23: General Scheme And Operation Principles

    2.5 GENERAL SCHEME AND OPERATION PRINCIPLES Flue Outlet Over Heat Switch Exhaust Duct Flame Rod Heat Exchanger Water Thermistor Spark (Lime Sensor) Electrode Heat Exchanger Igniter Thermal Fuse (Code Type) Solenoid Valve SV2 Burner Solenoid Valve SV1 Combustion Fan Modulating Solenoid By-pass Mixing Valve Main Solenoid Valve...

  • Page 24: Installation

    Contact Rinnai or your supplier for further instruction. Connect the hot and cold water supply pipes. An approved isolation valve and strainer MUST be installed in the cold water inlet pipe.

  • Page 25: Electrical Connection

    III. The appliance is equipped with power cord and plug: if the cable has to be replaced contact qualified professionals and use original Rinnai parts only not to invalidate the warranty. Do not use adaptors, multiple socket or extension cords.

  • Page 26: Water Control

    Up to TWO deluxe bathroom water controllers can be installed. • The FOURTH water controller in any installation must be an universal water controller. For more information regarding deluxe kitchen and bathroom water controllers, contact Rinnai or visit: www.rinnai.it. Location •...
  • Page 27 The water heater end of the cables are fitted with spade terminals. Only two pairs of cables (4 spade connectors in total) may be terminated. When attaching three or four cables it is necessary to join the cable terminals as follows: For each pair cut off the existing spade connectors and re-terminate each pair into a new spade connector (spade connectors are available from your local electrical component retailer) so that there are only two sets of spade...

  • Page 28: Universal Water Controller (Mc-601) Installation

    2.7.2 UNIVERSAL WATER CONTROLLER ( MC - 601 ) INSTALLATION Determine the most suitable position. Mark and drill 3 holes (mounting and cable access) for water controller dimensions. Film Controller Cable Cover Plates Screws Connector Fig. 1 Fig. 2 Fig. 3 Fig.

  • Page 29: Commissioning

    • After testing is completed, explain to the householder the functions and operation of the water heater and water controllers (if fitted). Remind the customer to complete the warranty card and forward to Rinnai. • Inform customer on use of an adequate water softening system to prevent damages to heat exchanger.

  • Page 31: Maintenance Instructions

    3. MAINTENANCE INSTRUCTIONS The following section provides specific instructions for proper maintenance of the product. This section is intended for the use by qualified technical personnel.

  • Page 32: Pcb Interface Layout And Functions

    3.1 PCB INTERFACE LAYOUT AND FUNCTIONS Operation of the PCB interface To enter into the PCB’s programming mode press PB2 until the LED digital display shows “1” (Gas type); Communication interface socket the current set value of “menu 1” will be displayed shortly PB1 - Data transfer button: afterwards (the possible values of “menu 1”...

  • Page 33: Gas Conversion And Pressure Adjustment

    3.2 GAS CONVERSION AND PRESSURE ADJUSTMENT Only qualified professionals are authorized to carry out the operations described. IMPORTANT The product warranty does not cover any alterations due to non-qualified personnel. The min and max gas operating pressures are factory pre-set: under normal circumstances any adjustment is not required during installation.

  • Page 34: Data Transfer Between Pcb's

    3.3 DATA TRANSFER BETWEEN PCB’S If a new PCB needs replacing, you can transfer data (gas type, model type, gas pressure and error history) from the existing PCB to the new one by doing the following: Check the current settings and note them on a piece of paper. Adjust the dip switch settings on the new PCB according to the old one.

  • Page 35: Flow Chart

    3.5 FLOW CHART Model: REU-A2024WD-E OPERATIONAL FLOW CHART OPERATION Insert power plug socket Eliminate cause Remove power plug from socket Current Fuse on PCB normal Water flow control Overheat 14 flashing device full close switch normal Water flow control Water flow control device full open device full open Remote control Indicator OFF...

  • Page 36: Wiring Diagram And Diagnostic Points

    3.6 WIRING DIAGRAM AND DIAGNOSTIC POINTS COLOR CODING COLOR CODING BK:BLACK BK:BLACK MAIN SOLENOIDE VALVE MAIN SOLENOIDE VALVE BR:BROWN BR:BROWN MODULATING SOLENOIDE VALVE MODULATING SOLENOIDE VALVE R :RED R :RED FLAME ROD FLAME ROD O :ORANGE O :ORANGE Y :YELLOW Y :YELLOW G :GREEN G :GREEN...

  • Page 37: Maintenance

    The appliance must be inspected, repaired and maintained by a licensed professional. The licensed professional must verify proper operation after servicing. For more detailed instructions on maintenance contact Rinnai or your supplier. Cleaning It is imperative that control compartments, burners, and circulating air passageways of the appliance be kept clean.
  • Page 38 Pour chemical product used to flush heat exchanger into water (acid 8-10% of water content). Place the drain hose (H3) and the hose (H2) to the Rinnai pump inlet into the cleaning solution. water heater Open both service valves (V1 and V2) on the hot water and cold water lines.

  • Page 39: Manual Draining Of The Water Heater

    3.7.2 MANUAL DRAINING OF THE WATER HEATER If the water heater is not going to be used during a period of possible freezing weather, it is recommended that the water inside the water heater be drained. To manually drain the water: Shut off cold water supply and gas supply.

  • Page 40: Technical Data

    3.8 TECHNICAL DATA Infinity Model REU-A2024WD-E Unit Installation External, outdoor G20 Nat Gas min gas pression mbar G20 Nat Gas max gas pression mbar G230 Air/Propane min gas pression mbar G230 Air/Propane max gas pression mbar G30 Butane min gas pression mbar G30 Butane max gas pression mbar...

  • Page 41: Product Fiche

    3.9 PRODUCT FICHE Unit Supplier’s name Rinnai Italia srl Supplier’s model REU-A2024WD-E Load profile Water heating energy efficiency class Water heating energy efficiency (ƞ 80.5 Annual electricity consumption (AEC) kWh/annum Annual fuel consumption (AFC) - (Hs) GJ/annum Temperature setting °C Indoor sound power level (LWA) Values tested with appliance set @60°C - Gas: G20mbar - High calorific value (Hs) - According to Reg.

  • Page 42: Ce Certificate

    3.10 CE CERTIFICATE...
  • Page 44 Italia srl Via Liguria, 37 41012 - Carpi (MO) Italy Tel. +39 059 622 9248 Fax. +39 059 622 4449 E-mail. info@rinnai.it Web. www.rinnai.it U340-1337(00) V.3 - 180620 - This manual edition replaces any previously published ones.

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