Table of Contents
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Operation / Installation Manual
(Residential and Commercial indoor unit)
WARNING: If the information in these instructions is not followed exactly, a fire
or explosion may result causing property damage, personal injury or death.
– Do not store or use gasoline or other flammable vapors and liquids in the vicinity
of this or any other appliance.
– WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use any phone in your building.
• Immediately call your gas supplier from a neighbor's phone. Follow the gas
supplier's instructions.
• If you cannot reach your gas supplier, call the fire department.
– Installation and service must be performed by a qualified installer, service agency
or the gas supplier.
To Suit Models:
REU-V2520FFU........ R53
REU-V2520FFUC..... C53
REU-V2532FFU........ R85
REU-V2532FFUC...... C85
REU-V2520FFUD...... R53PLUS
REU-V2520FFUCD... C53PLUS
REU-V2532FFUD...... R85PLUS
REU-V2532FFUCD... C85PLUS
ANS Z21.10.3=CSA 4.3
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Table of Contents
Related Manuals for Rinnai REU-V2520FFU
Summary of Contents for Rinnai REU-V2520FFU
- Page 1 Operation / Installation Manual To Suit Models: REU-V2520FFU..R53 REU-V2520FFUC..C53 REU-V2532FFU..R85 REU-V2532FFUC..C85 REU-V2520FFUD..R53PLUS REU-V2520FFUCD... C53PLUS REU-V2532FFUD..R85PLUS REU-V2532FFUCD... C85PLUS (Residential and Commercial indoor unit) ANS Z21.10.3=CSA 4.3 WARNING: If the information in these instructions is not followed exactly, a fire or explosion may result causing property damage, personal injury or death.
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Page 2: Specifications
Combustion Fan RPM Check - Integrated Circuit Over Current - Glass Fuse (3 amp) NOTE: Rinnai is continually updating and improving products, therefore, specifications are subject to change without prior notice. Local, state, provincial and federal codes must be adhered to prior to installation. -
Page 3: Limited Warranty
Rinnai will replace the product with a comparable product, at Rinnai’s discretion. If a component or product returned to Rinnai is found to be free of defects in material or workmanship, or damaged by improper installation or damaged during return shipping, the warranty claim for product, parts and labor may be denied. -
Page 4: Limited Warranty
. Please complete the Warranty registration either online or mail it to Rinnai at the address shown on the card. Receipt of warranty registration by Rinnai will constitute proof-of-purchase for this product. -
Page 5: Table Of Contents
Controllers Set Pattern/Temperature Tables .......18 Error Messages ..............19,20 Maintenance & Service Information ........21,22 Trouble Shooting and Common Questions ........23 For Your Safety Read Before Operating ........23 Operating Instructions ..............24 Care & Lime Condition Warning ..........24 Installer’s Instructions ............25-50 Rinnai America FF Models... -
Page 6: Owner's Installation Information
O W N E R ’ S I N S T A L L A T I O N I N F O R M A T I O N All Rinnai water heater(s) MUST be installed by a state qualified or licensed contractor. -
Page 7: Features Of Your New Water Heater
Ignition is electronic, there is no pilot light. When the hot water tap is off, no gas is used. You save energy and money with the Rinnai Water Heater. The temperature of the outgoing hot water is constantly monitored by a built in sensor. If... -
Page 8: Safety Issues
S A F E T Y I S S U E S Depending on the weather conditions and Always check water temperature by hand the length of the pipe between the Rinnai before entering the shower or bath. The Water Heater and the tap in use, there may temperature may have been changed. -
Page 9: Basic Operation
NOTE: CHECK LOCAL CODES FOR THE MAXIMUM WATER TEMPERATURE SETTING ALLOWED WHEN USED IN NURSING HOMES, SCHOOL, DAY CARE To take control of the Rinnai Water Heater CENTERS, AND ALL OTHER PUBLIC all hot water taps must be closed. Press APPLICATIONS. -
Page 10: About Hot Water
A B O U T H O T W A T E R Hot Water Is Dangerous, especially for the young and the elderly or the infirm. The Rinnai Water Heater allows you to precisely control the temperature of your hot water, ensuring safe hot water temperatures. -
Page 11: General Controller Information
REMOTE CONTROLLERS IDENTIFICATION MC-91-1US (comes with the unit) MC-100V-1US (optional) BC-100V-1US (optional) The controller(s) for the Rinnai Water Heater allow the customer to control the functions of the water heater and to diagnose certain fault conditions Rinnai America FF Models... -
Page 12: Remote Controller Operation
Press and hold ‘On/Off’ button for 5 seconds while water heater is OFF. To change back from C to F, please repeat step 1. MUTE To eliminate the beeping sound, press and hold button simultaneously until a ‘beep’ is heard (approximately 5 seconds). Rinnai America FF Models... - Page 13 Thermostat Sound Volume Water Volume Increases or decreases the desired Used to select the voice prompt Used to select Water Smart / Bath water temperature. volume. Fill volumes. Rinnai America FF Models...
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Page 14: Deluxe Controller
Once the hot water is running, if the set temperature is either too hot or cold, press the buttons until the desired temperature is reached. COLD COLD NOTE: TEMPERATURE CANNOT BE ADJUSTED EXCEPT BETWEEN 98°F AND 110°F WHEN ANY HOT WATER TAP IS OPEN. Rinnai America FF Models... - Page 15 IS OPEN. CHECK WATER TEMPERATURE BEFORE USE. A parent should always check the temperature before a child is placed in contact with hot water. NOTE: Avoid getting water in the speaker as this may cause damage. Rinnai America FF Models...
- Page 16 Remain by the bath during the filling process. Use a low bath fill volume such as 25 gallons or less. ‘Water Smart / Bath Fill’ button is unavailable with the MSA Controller System. Rinnai America FF Models...
- Page 17 Kitchen Controller monitor will go out. COMBINING CONTROLLERS AND DELUXE CONTROLLERS Controller and Deluxe Controller can be combined and will function as described in other sections of this manual. Refer to the table on page 18 Rinnai America FF Models...
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Page 18: Controllers Set Pattern/Temperature Tables
Controllers allow the water temperature to be set from the various locations where they are installed. The temperature selected will be available to all outlets. Below are the combination of Controllers that are offered by Rinnai: Controllers Combination Pattern —... -
Page 19: Error Messages
E R R O R M E S S A G E S The Rinnai Water Heater has the ability to check its own operation continuously. If a fault occurs, an Error Message will flash on the Digital Dispaly of the Remote Controller. This assists with diagnosing the fault, and may enable you to overcome a problem without a service call. - Page 20 Ensure you have at least the minimum flow rate required to fire unit. Ensure turbine spins freely. Measure the resistance of the water flow control sensor. Remote control does not light up but you have 12 VDC at the terminals for controls. Rinnai America FF Models...
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Page 21: Maintenance & Service Information
5) Do not obstruct flow of combustion and ventilation air. In the case of any fault or error message from the Rinnai Water Heater, first turn all hot water taps off. Wait for 5 seconds. Turn the hot water tap back on. - Page 22 The water heater should be cleaned annually. Keep the water heater clear of dust and debris especially in and around burner. Cleaning procedures for the Rinnai Water Heater are as follows: 1) Turn off and disconnect electrical power. Allow to cool for one hour.
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Page 23: Trouble Shooting And Common Questions
- After I turn off the hot water tap, the fan on the Rinnai Water Heaters continues to run! - The fan is designed to be on for 65 seconds after the flow of water stops.This is to ensure constant water temperatures during rapid starting and stopping, as well as exhausting any residual gas flue products from the unit. -
Page 24: Operating Instructions
If you notice “LC” flashing on the remote key pad, this means the unit is beginning to lime up, and MUST be flushed. Contact a qualified Rinnai service technician to flush the appliance. Failure to flush the appliance when “LC” is flashing, will cause damage to the heat exchanger. -
Page 25: Installer's Instructions
If you are not properly trained, you should not install this unit. The warranty may be voided due to installation by a non-qualified installer. For information on Rinnai Training Courses, call 1-800-621-9419. Warnings ..............26,27 Locating the Vent Terminal ........... 28 Performance Data ............ -
Page 26: Warnings
DO NOT use this water heater for space heating, combination space heating/ domestic water heating, or commercial water heating applications. 3) The Rinnai Water Heater is not suitable for use in pool or spa applications. 4) This unit is designed to be installed indoors using the proper vent piping to exhaust by-products of combustion to the outside environment. - Page 27 Toxic chemicals such as those used for boiler water treatment are NOT to be introduced to the portable water used for space heating. The Rinnai Water Heater, if it will be used as a potable water source, must not be connected to a system that was previously used with a nonpotable water heating appliance.
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Page 28: Locating The Vent Terminal
3 feet above if within 10 feet horizontally NOTE: ONLY Rinnai Approved vent materials and components can be used to vent the water heaters. When installing your Rinnai vent system, you MUST follow Rinnai’s Venting Instructions found in each vent terminal box. These instructions provide the maximum allowable vent heights for both horizontal and vertical venting, how to cut the vent components, and pipe installations. -
Page 29: Performance Data
I N S TA L L E R ’ S I N S TA L L AT I O N I N S T R U C T I O N S OUTLET FLOW DATA V2532FFU/FFUC V2532FFUD/FFUCD V2520FFU/FFUC V2520FFUD/FFUCD Rinnai America FF Models... -
Page 30: Dimensions
INSTALLER’S INSTALLATION INSTRUCTIONS Dimensions MC-100V-1US MC-91-1US BC-100V-1US FITTING 5” 3-1/2” 8” DIAMETER REU-V2532FFU REU-V2520FFU REU-V2532FFUD REU-V2520FFUD DESCRIPTION REU-V2532FFUC REU-V2520FFUC REU-V2532FFUCD REU-V2520FFUCD Width 13.8" 14.0" Depth 9.2" - 10.8" 9.6" - 11.2" Height - Unit 23.6" 22.9" Height - Including Brackets 24.7"... -
Page 31: Recommended Piping For Basic Installation
Confer Pressure Relief Valve Solenoid Valve with local building officials before installation. RINNAI WATER HEATERS Domestic Hot Water - Standard Installation 103 International Drive 1 Rinnai Water Heater Peachtree City, Georgia 30269 Rinnai America FF Models... -
Page 32: Recommended Piping For Circulation Systems
Confer Pressure Relief Valve Solenoid Valve with local building officials before installation. RINNAI WATER HEATERS Domestic Hot Water - Circulation Systems 103 International Drive 1 Rinnai Water Heater with Electric Storage Tank Peachtree City, Georgia 30269 Rinnai America FF Models... -
Page 33: Optional Piping For Circulation Systems
Confer Pressure Relief Valve Solenoid Valve with local building officials before installation. RINNAI WATER HEATERS Domestic Hot Water with Circulation 103 International Drive 1 Rinnai Water Heater Peachtree City, Georgia 30269 Rinnai America FF Models... - Page 34 I N S TA L L E R ’ S I N S TA L L AT I O N I N S T R U C T I O N S RECOMMENDED SCALE FLUSH PROCEDURE RINNAI Water Heater Flush Procedure Disconnect power to the Rinnai Water Heaters. Close valves V3 and V4. Connect pump outlet hose H1 to service valve V2.
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Page 35: Venting
If more than one elbow is used in the vertical section you must use a condensate collector. Vertical Venting Horizontal Venting with a (condensate collector required) Condensate Collector Condensate Trap 3 in 3 in 3 in Rinnai America FF Models... - Page 36 • This water heater is a direct vent water heater and therefore is certified and listed with the vent system. The only vent/air intake system listed for use with this appliance is the Rinnai / Ubbink vent system or the Heat-Fab Saf-T Vent SC system.
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Page 37: Freeze Protection
NO FREEZE PROTECTION is available. The installation of auto drain down solenoid valves is optional. However, Rinnai strongly recommends that these valves be installed to prevent damage from freezing in case the normal freeze protection should become disabled. If the valves are not installed then any product damage due to freezing will not be covered by the warranty. -
Page 38: Gas Piping Sizing Chart
After determining the length of pipe required select the pipe size that will supply the cubic feet per hour of gas required for the input rating of the Rinnai Water Heaters. The formula for figuring the cubic feet per hour required is:... -
Page 39: Gas Piping Notes
I N S TA L L E R ’ S I N S TA L L AT I O N I N S T R U C T I O N S Gas Piping Notes 1) A manual gas control valve must be placed upon the gas supply line to the Rinnai Water Heater. A union can be used on the connection above the shut off valve for the future servicing or disconnection of the unit. -
Page 40: Water Piping Notes
2) All soldering materials and piping must be compatible with potable water. 3) Purge the water line to remove from it all debris and air. Debris will damage the Rinnai Water Heaters. -
Page 41: Lighting The Unit
3) Turn the manual gas control valve on. STOP!! READ THE SAFETY ISSUES ON PAGES 8 4) Turn on any hot water tap. The Rinnai Water Heater should light and begin heating your water. If the Rinnai Water Heater fails to light 1) DO NOT ATTEMPT TO LIGHT BY HAND. -
Page 42: Remote Controllers
I N S TA L L E R ’ S I N S TA L L AT I O N I N S T R U C T I O N S Remote Controllers- General The remote controls for the Rinnai Water Heater allow the customer to control the functions of the water heater and to diagnose certain fault conditions. -
Page 43: Remote Controllers Installation
Determine a suitable location for the controller. Make three holes on the wall as shown. Run the cable between the controller and the Rinnai Water Heater or the controller and the other controller. Remove the face plate from the remote controller(s). - Page 44 Remot e Cont ro lle rs I n s ta l l a t i o n to Ap p l i a n ce For models : V2520FFUD/FFUCD and V2532FFUD/FFUCD 7) Disconnect the power from the Rinnai Water Heater.
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Page 45: Testing
11) Check the operation of the unit. Check the operation of each of the remote controller(s). Check the operation of the Power failure protection system. 12) Explain the proper operation of the Rinnai Water Heaters to the customer. Rinnai America... -
Page 46: Schematic Diagram
I N S TA L L E R ’ S I N S TA L L AT I O N I N S T R U C T I O N S Schematic Diagram V2532FFU (R85) & V2532FFUC (C85) V2520FFU (R53) - (Fixed By-Pass) *V2520FFUC (C53) - (No By-Pass) Rinnai America FF Models... - Page 47 I N S TA L L E R ’ S I N S TA L L AT I O N I N S T R U C T I O N S Schematic Diagram V2532FFUD (R85PLUS) & V2532FFUCD (C85PLUS) V2520FFUD (R53PLUS) - (Fixed By-Pass) *V2520FFUCD (C53PLUS) - (No By-Pass) Rinnai America FF Models...
- Page 48 060 00002 31445 1 U245-3250X01(00) Printed in Japan_06/03...