Outdoor Tankless Water Heater Installation and Operation Manual Full-length French and Spanish versions available online at rinnai.us FOR OUTDOOR APPLICATIONS ONLY V53De ................... REU-AM1620WD-US This entire manual must be left for the consumer. The consumer must read and refer to this manual for proper operation and to maintain the water heater. Place Model/Serial # Label Here Located in Manual Bag Low Lead Content NSF/ANSI 372 ANSI Z21.10.3 ● CSA 4.
Table of Contents Table of Contents ..................................................... 2 Safety Behaviors and Practices for the Consumer and Installer ............................................ 3 Installation Instructions (for the licensed professional) .............................. 4 Prepare for Installation ...................................... 5 Determine Installation Location ........................ 5 Water Quality ....................................................
Safety Behaviors and Practices for the Consumer and Installer WARNING / AVERTISSEMENT • Before operating, smell all around the appliance area for gas. Be sure to smell next to the floor because some gas is heavier than air and will settle on the floor. • Keep the area around the appliance clear and free from combustible materials, gasoline, and other flammable vapors and liquids.
Installation Instructions Installer Qualifications • Do not obstruct the flow of combustion and A licensed professional must install the appliance, inspect it, and leak test it before use. The warranty will be voided due to improper installation. The installer should have skills such as: • gas sizing • connecting gas lines, water lines, valves, electricity, • knowledge of applicable national, state, and local codes. If you lack these skills contact a licensed professional.
• Should overheating occur or the gas supply fail to shut off, turn off the manual gas control valve to the appliance. • Keep the air intake location free of chemicals such as chlorine or bleach that produce fumes. These fumes can damage components and reduce the life of your appliance.
Exhaust Outlet Clearances L Ref A Description Clearance above grade, veranda, porch, deck, or balcony Canadian Installations (CSA B149.1) US Installations (ANSI Z223.1 / NFPA 54) 12 inches (30 cm) 12 inches (30 cm) 6 in (15 cm) for appliances ≤ 10,000 Btuh (3 kW), 12 in (30 cm) for appliances > 10,000 4 ft (1.
· · 12" 36" 2" 60" · · · -
Checklist to Determine Installation Location □ □ □ □ □ □ The water heater is not exposed to corrosive compounds in the air. The water heater location complies with the clearances. The planned exhaust outlet/air intake location meets the clearances. The water supply does not contain chemicals or exceed total hardness that will damage the heat exchanger. A 120 VAC, 60 Hz source is available.
Remove the Front Panel • • Slide the plastic trim pieces on each side of the water heater to expose the screws. INFORMATION Remove the 4 screws and pull off the front panel. due to thermal expansion in a closed water supply system. Contact the water supplier or local plumbing inspector on how to correct this situation. Do not plug the relief valve. • The American National Standard (ANSI Z21.10.3) does not require a combination temperature and pressure relief valve for this appliance.
Piping Diagram for Basic Installation Rinnai Water Heater Rinnai Equipment List QTY Rinnai Water Heaters 1 RIK-KIT (Optional) 1 (3/4" Fittings Include: 2 Unions, 2 Ball Valves, 2 Drain Valves and 1 Pressure Relief Valve.
Connect Water Heater to Water Supply Installation of Gas Supply WARNING / AVERTISSEMENT Water connections to the tankless water heater should follow all state and local plumbing codes. If this is a standard installation, refer to the Piping Diagram for Basic Installation. 1. Plumb the cold water supply to the tankless water heater on the 3/4” MNPT connection at the bottom of the unit marked “COLD. 2. Plumb the building hot water supply to the 3/4” MSPT connection marked “HOT.
• Any compound used on the threaded joint of the gas piping shall be a type which resists the action of liquefied petroleum gas (propane / LPG). • The gas supply line shall be gas tight, sized, and so installed as to provide a supply of gas sufficient to meet the maximum demand of the heater and all other gas consuming appliances at the location without loss of pressure. • Refer to an approved pipe sizing chart if in doubt about the size of the gas line.
Connect Electricity Adjust for High Altitude WARNING / AVERTISSEMENT Do not use an extension cord or an adapter plug with this appliance. The water heater must be electrically grounded in accordance with local codes and ordinances or, in the absence of local codes, in accordance with the National Electrical Code, ANSI/NFPA No. 70. On the Dip switches, set switches No. 2 and No. 3 to the values shown in table below for your altitude.
Installation of Temperature Controller WARNING / AVERTISSEMENT Turn the power off. Do not attempt to connect the temperature controllers with the power on. Although the controller is a low voltage device, there is 120 volt potential next to the temperature controller connections inside the unit. Configurations A maximum of 4 temperature controllers can be installed for a water heater or bank of water heaters. This includes the controller built into an indoor water heater.
Mounting the Controller Follow the procedure below to install an MC-601-US temperature controller. 1. Determine a suitable location for the controller. 2. Make threeOutline holes inofthe wall as shown. Remote securing screw 1-21/32" wiring hole 3-5/16" securing screw 3. Run the wiring between the controller and the Rinnai water heater or the controller and another controller as shown in the illustration on P.14. 4. Remove the face plate from temperature controller using a screwdriver. 5.
Final Checklist □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ 16 The water heater is not subject to corrosive compounds in the air. The water supply does not contain chemicals or exceeds total hardness that will damage the heat exchanger. Clearances from the water heater unit are met. Clearances from the exhaust outlet / air intake are met. Purge the water line of all debris and air by closing the hot isolation valve and opening the cold isolation valve and its drain. Debris will damage the water heater.
Technical Data Specifications V53De Minimum Gas Consumption Btu/h 15,500 (LP & NG Both) Maximum Gas Consumption Btu/h 120,000 Hot water capacity (Min - Max) * 0.4 - 5.3 GPM (1.5 - 20.0 L/min) Temperature Settings (without temperature controller) 120° F (49° C), default or 140° F (60° C) Temperature Controller Default Setting 115° F (46° C) Maximum Temp Setting (residential) 140° F (60° C) see Temperature Ranges for more information Minimum Temperature Setting 115° F (46° C) Weight 29.7 lb.
Dimensions A B DIM K G I H F 18 Width 14.0 (356) B Depth * 7.9 (202) C Height - Unit 19.8 (503) D Height - with brackets 22.5 (571) E Hot Water Outlet from wall * 3.4 (87) F Hot Water Outlet from center 4.1 (105) G Cold Water Inlet from wall * 2.7 (68) H Cold Water Inlet from center 0.4 (10) I Gas Connection from wall * 3.0 (77) J Gas Connection from center 3.3 (83) From base to gas connection 1.6 (40) From base to cold connection 2.
Pressure Loss (psi) Pressure Loss (ft head) Pressure Drop Curve Water Flow (gpm) Water Flow Curve 6.0 Water Flow (gpm) 5.0 4.0 3.0 2.0 1.0 0.
Ladder Diagram 20 V53De Manual
Outdoor Tankless Water Heater Operation Instructions FOR OUTDOOR APPLICATIONS ONLY V53De ................... REU-AM1620WD-US Important Facts about your Water Heater Thank you for purchasing a Rinnai Tankless Water Heater. For proper operation and safety, it is important to follow the instructions and adhere to the safety precautions. Read all of the instructions and the warranty thoroughly before operating this water heater. Keep this manual in a safe place.
Consumer Operation Guidelines for the Safe Operation of your Water Heater FOR YOUR SAFETY READ BEFORE OPERATING WARNING AVERTISSEMENT If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life. A. This appliance does not have a pilot. It is equipped with an ignition device which automatically lights the burner. Do not try to light the burner by hand. B. BEFORE OPERATING ,smell all around the appliance area for gas.
How to Use the Temperature Controller Dimensions (inches): 3.54 W x 4.72 H x 0.70 D 90mm x 120mm x 17.7mm The V53De does not come with a temperature controller. There are several models of temperature controllers that can be purchased separately. A maintenance display or status monitor is provided in the front panel to indicate operating status and error codes. In Use Indicator 42 Temperature Display Temperature Selection Priority Button The MC-601-US controller is the standard temperature controller.
How to Set the Temperature This water heater requires a minimum flow rate to operate. This rate can be found on the specification page in this manual. In some cases when you are not getting hot water or if the water alternates between hot and cold, it is due to the water flow being below or close to the minimum flow rate. Increasing the flow rate should resolve these problems in these cases. If you are experiencing issues with higher temperature settings, then reduce the temperature setting.
Temperatures Available with a Controller The water heater can deliver water at only one temperature setting at a time. The available temperatures are provided below. A temperature lower than 115° F (46° C) can be obtained at the tap by mixing with cold water. To change the temperature scale from Celsius to Fahrenheit or vice versa, press and hold the ON/OFF button for 5 seconds while the water heater is OFF.
Temperature Options Without a Temperature Controller The default temperature setting for this appliance installed without a temperature controller is 120° F (49° C). If desired, the temperature setting can be changed to 140° F (60° C) ), as well as other temperature increments by push button adjustments, as described below. PCB Interface Layout and Functions 1. Push Button 1 (PB1) - White Data transfer button for PCB replacement. 1 2.
Diagnostic Codes This water heater is designed to display diagnostic codes. If there is a potential operation concern refer to the code and remedy on the next page. Front Panel Display Indications -On FL or FH Error code flashing Standby (power is supplied but there is no demand for hot water). Hot water is being supplied. Stands for Forced Low and Forced High combustion. Only seen during the gas pressure setting procedure which is done when certain components are replaced.
Code Definition Remedy Check for restrictions in air flow around unit and exhaust outlet. Check gas type of unit and ensure it matches gas type being used. Check for low water flow in a circulating system causing short-cycling. Ensure dip switches and programming parameters are set to the proper position. Check for foreign materials in combustion chamber and/or exhaust piping. Check heat exchanger for cracks and/or separations.
Required Maintenance The appliance must be inspected annually by a licensed professional. Repairs and maintenance should be performed by a licensed professional. The licensed professional must verify proper operation after servicing. WARNING / AVERTISSEMENT To protect yourself from harm, before performing maintenance: • Turn off the electrical power supply by unplugging the power cord or by turning off the electricity at the circuit breaker.
Clean the water filter Clean the inlet water filter by closing the cold and hot water inlet isolation (shut-off) valves. Put a bucket under the filter at the bottom of the water heater to catch any water that is contained inside the unit. Unscrew the water filter. Rinse the filter to remove any debris. Install the filter and open the isolation valves. WARNING / AVERTISSEMENT protected to prevent freezing. Damage due to freezing is not covered by the warranty. Refer to the section on Freeze Protection.
Flushing the heat exchanger An LC or “00” diagnostic code indicates the unit is beginning to lime up and must be flushed. Failure to flush the appliance will cause damage to the heat exchanger. Damage caused by lime build-up is not covered by the unit’s warranty. KEY 1. Disconnect electrical power to the water heater. 2. Close the shutoff valves on both the hot water and cold water lines (V3 and V4). 3. Connect pump outlet hose (H1) to the cold water line at service valve (V2). 4.
Manual Draining of the Water Heater To avoid burns, wait until the equipment cools down before draining the water. The water in the appliance will remain hot after it is turned off. WARNING / AVERTISSEMENT 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: 1. Shut off cold water supply and gas supply. Water Hot water 2. Turn off the temperature controller.
Consumer Warranty Limited Warranty What is covered? This Limited Warranty covers any defects in materials or workmanship when the product is installed and operated according to Rinnai written installation instructions, subject to the terms within this Limited Warranty document. This Limited Warranty applies only to products that are installed correctly. Improper installation may void this Limited Warranty.
Proof of purchase is required to obtain warranty service. You may register this product within 30 days of purchase or you may show proof of purchase with a dated sales receipt. To register your tankless water heater, please visit www.rinnai.us. For those without internet access, please call 1-800-621-9419 . Receipt of Registration by Rinnai will constitute proof-of-purchase for this product. However, Registration is not necessary in order to validate this Warranty.
Learn more about Rinnai high-performance Tankless Water Heaters, Hybrid Water Heating Systems, Boilers, Vent-Free Fan Convectors and EnergySaver® Direct Vent Wall Furnaces at: rinnai.us | rinnai.ca Rinnai America Corporation • 103 International Drive, Peachtree City, GA 30269 1-800-621-9419 • rinnai.us ©2018 Rinnai America Corporation. Rinnai America Corporation continually updates materials, and as such, content is subject to change without notice.
