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Continuous flow and temperature control
instantaneous gas water heater
Operation and installation manual
REU-AM2024WD-SA – Infinity 20 external - 20e
REU-AM2626WD-SA – Infinity 26 external - 26e
This appliance must be installed in accordance with:
・Manufacturer's installation instructions;
・National laws, local regulations and municipal building codes.
This appliance may only be installed by a registered Gas installer.
Read these operation and installation manual carefully before using the appliance
and retain them for future reference
This appliance shall only be installed in an outside location
.
.
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Table of Contents
Troubleshooting
Related Manuals for Rinnai REU-AM2024WD-SA
Summary of Contents for Rinnai REU-AM2024WD-SA
- Page 1 Continuous flow and temperature control instantaneous gas water heater Operation and installation manual REU-AM2024WD-SA – Infinity 20 external - 20e REU-AM2626WD-SA – Infinity 26 external - 26e This appliance must be installed in accordance with: ・Manufacturer’s installation instructions; ・National laws, local regulations and municipal building codes.
- Page 2 Africa Qualitysystemstandard 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 3.Technicalinformation Water Operating Description Model Number Type Gas Type Gas Consumption Capacity Pressure Infinity 20 REU-AM2024WD-SA 20 litres/min 2,8 kPa 3,1 kg/h(156MJ/h) Infinity 26 REU-AM2626WD-SA 26 litres/min 2,8 kPa 4,0 kg/h(199 MJ/h) Infinity 20 REU-AM2024WD-SA 20 litres/min...
- Page 4 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 5 Replacement of the entire product or replacement of any parts may only be authorised by Rinnai. Rinnai does not authorise any person or company to assume for it any obligation or liability in connection with the replacement of a product or heat exchanger. If Rinnai determines that repair of a product is not possible, Rinnai will replace the product with a comparable product, at Rinnai’s discretion.
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Page 6: 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'sInstructions
1.USER’SINSTRUCTIONS 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 NEVERRUNOUT 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.
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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 the authorised Rinnai service company for further information regarding Deluxe water controllers. 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).
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Page 16: Trouble Shooting
1.4TROUBLESHOOTING 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 To operate the water heater temporarily until the heat exchanger LC1... history, “00” is can be flushed, push the On/Off button on the temperature controller 5 substituted for“LC”) times. Repeated LC codes will eventually lockout the water heater. Please call the authorised Rinnai service company.
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Page 18: Troubleshooting Without Water Controllers
1.4.2 TROUBLESHOOTING WITHOUT WATER CONTROLLERS If you have not installed temperature controllers and experience the following symptoms, please carry out the suggestions below or check status monitor and remdy of 1.4.1. If symptoms continue, please contact Rinnai for advice. Description Remedy Check the power is on at the unit. -
Page 19: Installer'sInstructions
2.INSTALLER’SINSTRUCTIONS 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
For installations where the distance between the water heater and the outlets is considerable, a flow and return system or the ‘circulation kit’ Rinnai system can be used to minimise the waiting time for hot water delivery. -
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. 2.3DIMENSIONS... -
Page 22: Main Components
2.4MAINCOMPONENTS Basic structure of REU-AM2626WD-SA and REU-AM2024WD-SA is same. As representation, illustration below is REU-AM2024WD-SA only. no thermistor for 2626 2626 model' case FR and IG position is opposite. NAME NAME NAME CASING ASS'Y 14 GAS CONTROL ASS'Y 27 STATUS MONITOR... -
Page 23: General Scheme And Operation Principles
2.5GENERALSCHEMEANDOPERATIONPRINCIPLES Basic structure of REU-AM2626WD-SA and REU-AM2024WD-SA is same. As representation, illustration below is REU-AM2024WD-SA only. Flue Outlet Over Heat Switch Exhaust Duct Flame Rod Heat Exchanger Water Thermistor (Lime Sensor) Spark ※no thermistor for 2626 Electrode Heat Exchanger Igniter... -
Page 24: Installation
A minimum horizontal clearance of 500mm between a building structure and obstruction facing the terminal. For correct operation of Rinnai external continuous flow water heaters MINIMUM OBSTRUCTION such a building structure MUST ‘obstruct’ the full front cover height of the HEIGHT IS TO BE NO LESS appliance (appliance dimensions, refer to “Dimensions”... - Page 25 Additional Clearance Local codes supersede these clearances. ● Avoid termination locations near a dryer vent. ● Avoid termination locations near commercial cooking exhaust. 50 mm between terminals at same level 0,91 m to ventilated or 50mm 0,91m unventilated soffit or eve vent; 0,3m or to a deck or porch 0,30 m to an...
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Page 26: Water Connection
The unit will operate at lower supply pressures but the maximum flow rate may not be achieved. Most installations will use high temperature setpoints which will reduce the available flow rate and heat exchanger pressure drop, and therefore less pressure will be required at the inlet. Contact Rinnai or your supplier for further instruction. -
Page 27: Electrical Connection
2.6.4 ELECTRICAL CONNECTION Connect the appliance to a 230V ±10% / 50Hz power supply. Do not use water or gas lines to ground the system. Ground The electric safety is guaranteed only when the appliance is properly grounded Ground and the grounding system has been realized following all the safety prescriptions provided for by law. -
Page 28: 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 the authorised Rinnai service company. Location ●Donotinstallwatercontrollersnearaheatsource,suchasacooktop,stoveoroven.Heat,... - Page 29 It is not recommended to install the communication cable near by house electric cables: interfearence may easily happen causing system malfunctions. In these cases we recommend to use proper shieldied cables. When connecting the cables to water controller or heater the polarity is not important: either colour wire can be connected to either terminal.
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Page 30: 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. 4 When running cable through the access hole ensure the connector end of the cable is located nearest to the water controller (Fig. -
Page 31: Commissioning
2.8COMMISSIONING ● Make sure the water heater is not subject to corrosive compounds in the air. ● Check the water supply does not contain chemicals or exceeds total hardness that will damage the heat exchanger. ● Verify the clearances from the water heater and from vent termination/air intake unit are met. ●... -
Page 33: MaintenanceInstructions
3.MAINTENANCEINSTRUCTIONS The following section provides specific instructions for proper maintenance of the product. This section is intended for the use by qualified technical personnel. -
Page 34: Pcb Interface Layout And Functions
3.1PCBINTERFACELAYOUTANDFUNCTIONS OperationofthePCBinterface 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 afterwards (the possible values of “menu 1” are: PB1 - Data transfer button: activates data transfer when PCB is replaced “A”, “b”, “C”... -
Page 35: Data Transfer Between Pcb's
3.2DATATRANSFERBETWEENPCB’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 36: Flow Chart
3.4FLOWCHART Model: REU-AM2024WD-SA OPERATIONAL FLOW CHART REU-AM2626WD-SA OPERATION Insert power plug socket Eliminate cause Remove power plug from socket Current Fuse on PCB normal Water flow control Overheat 14 flashing switch normal device full close Water flow control Water flow control... -
Page 37: Wiring Diagram And Diagnostic Points
3.5WIRINGDIAGRAMANDDIAGNOSTICPOINTS COLOR CODING COLOR CODING BK:BLACK BK:BLACK MAIN SOLENOIDE VALVE MAIN SOLENOIDE VALVE BR:BROWN BR:BROWN AM SERIES ONLY MODULATING SOLENOIDE VALVE MODULATING SOLENOIDE VALVE R :RED R :RED FLAME ROD FLAME ROD O :ORANGE O :ORANGE STATUS MONITOR Y :YELLOW Y :YELLOW 2626 MODEL ONLY SV3 BK R SOLENOIDE VALVE 3 G :GREEN G :GREEN BL:BLUE BL:BLUE SV1 BK BL SV1 BK PR:PURPLE PR:PURPLE SOLENOIDE VALVE 1 SOLENOIDE VALVE 1 GY:GRAY GY:GRAY W :WHITE W :WHITE... -
Page 38: 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 39 Connect drain hose (H3) to service valve (V1). Pour chemical product used to flush heat exchanger into water (acid 8-10% of water content). Rinnai water heater Place the drain hose (H3) and the hose (H2) to the pump inlet into the cleaning solution.
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Page 40: Manual Draining Of The Water Heater
3.6.2 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 41: Technical Data
3.7TECHNICALDATA InfinityModel REU-AM2024WD-SA REU-AM2626WD-SA Unit Installation External, outdoor Flue system Direct forced exhaust Temperature range with water controller 37-46, 48, 50, 55, 60, 65 °C Tempearature range with push buttons 40, 42, 50, 55, 60, 65 °C Ignition Direct electronic ignition... - Page 42 Memo...
- Page 43 Memo...
- Page 44 Web. http://www.rinnai.com U340-1341(00)