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Outdoor Tankless Water Heater
Operation and Installation Manual
RL75e ................. REU-VB2528WD-US
RL94e ................. REU-VB2735WD-US
R98LSe ............... REU-VA3237W-US
R98LSe-ASME ... REU-VA3237W-ASME
FOR OUTDOOR APPLICATIONS ONLY
Table of Contents ..................... 2
Consumer Safety Information ... 4
Operating Instructions ............... 5
Maintenance ........................... 11
The VB series (RL75e and RL94e) are certified for
Error Codes .....................
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This model has been built in accordance with R98LSe-ASME R the requirements of the ASME Boiler and Pressure Vessel Code and has received the Certificate of Authorization from the National Board. The heat exchanger on this unit has the NB and HLW stamps. California Proposition 65 lists chemical substances known to the state to cause cancer, birth defects, death, serious illness or other reproductive harm. This product may contain such substances, be their origin from fuel combustion
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Specifications Model RL75e RL94e R98LSe R98LSe-ASME 9,900 (NG) Minimum Gas Consumption Btu/h 19,000 10,300 (LPG) Maximum Gas Consumption Btu/h 180,000 199,000 237,000 0.4 - 7.5 GPM 0.4 - 9.4 GPM 0.6 - 9.8 GPM Hot water capacity (Min - Max) * (1.5 - 28.5 L/min) (1.5 - 35.5 L/min) (2.3 - 37 L/min) 6.6 GPM 7.1 GPM 8.5 GPM Hot water capacity (45°F rise) (25.1 L/min) (27.0 L/min) (32 L/min) Default Temperature Setting (no controller) 120º F (49º C) Temperature Controller Default
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Consumer Safety Information Safety Definitions This is the safety alert symbol. This symbol alerts you to potential hazards that can kill or hurt you and others. Indicates an imminently hazardous situation which, if not avoided, will result in death or DANGER serious injury. Indicates a potentially hazardous situation which, if not avoided, could result in death or WARNING serious injury. Indicates a potentially hazardous situation which, if not avoi
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MC-502 BC-100 MC-100 MCC-91 MC-91 Description of Operation The Rinnai water heater is one of the most advanced Ignition is electronic. There is no pilot light consuming water heaters available. It provides a continuous gas while the water heater is not being used. The gas supply of hot water at a preset temperature. burner lights automatically when the hot water tap is opened and goes out when the tap is closed. This appliance is a direct vent appliance where air is brought in
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Temperature Controller MC-91-1US & MCC-91-1US Dimensions (inches): 3.5 W x 4.75 H x 0.75 D The MC-91 controller is the standard temperature controller that is supplied with the water heater. On indoor models it is integrated into the front panel. The MCC-91 controller is for commercial and hydronic applications requiring higher temperatures. When the MCC-91 controller is connected, these higher temperatures are available on all controller models in the system. Refe
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How to Set the Temperature Hot water can be dangerous, especially for infants or children, the elderly, DANGER or infirm. There is hot water scald potential if the thermostat is set too high. Water temperatures over 125º F (51º C) can cause severe burns or scalding resulting in death. Hot water can cause first degree burns with exposure for as little as: 3 seconds at 140º F (60º C) 20 seconds at 130º F (54º C) 8 minutes at 120º F (48º C) Test the temperatur
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Temperature Controller Settings * Re-setting the Maximum Temperature (RL75 and RL94 only) Maximum Temperature Models RL75 and RL94 have a default maximum temperature of 120º F 120º F (49º C) 140 ºF (60 ºC) (49º C) and an option to increase the maximum temperature to 140 ºF Switch No. Switch No. (60 ºC). Temperature settings from 125-140 ºF (52-60 ºC) are available ON ON by setting dip switch 6 to ON in the SW1 bank of 8 dip switches. O O 1 1 F F 2 2 F F 3 3 4 4 **
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Using the Water Smart / Bath Fill Function The bath fill function will not work Overview NOTICE properly if it is connected to multiple water heaters. The tub will overfill This function is exclusive to the BC-100V temperature Multiple because the bath fill function is not controller. The bath fill function allows the consumer able to measure the water volume to fill a tub with a preset volume of water at a preset Water when connected to multiple water temperature.
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Using the Water Smart / Bath Fill Function Filling the Tub 1. Press the “Water Smart / Bath Fill” To stop the water flow during the Bath NOTICE button once. The button will Fill function, press the “Water Smart / illuminate, and a tone will sound. Bath Fill” button. The button will flash To Stop the and the voice prompt will announce, 2. The voice prompt will announce “Hot water is not available. Turn off Bath Fill “The hot water system is ready. all hot water t
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Maintenance Snow Accumulation WARNING Keep the area around flue terminal free of snow and Turn off the electrical power supply, the manual gas ice. The appliance will not function properly if the valve and the manual water control valve whenever intake air or exhaust is impeded (blocked or partially servicing the unit. blocked) by obstructions. Repairs and maintenance should be performed by a Visual Inspection of Flame qualified service technician. The
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Error Codes The Rinnai water heater has the ability to check its own operation continuously. If a fault occurs, an error code will flash on the display of the temperature controller. This assists with diagnosing the fault and may enable you to overcome a problem without a service call. Please identify the code displayed when inquiring about service. Some of the checks below may need to be done by a qualified service technician. Call a WARNING service technician for any remedy th
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Error Codes Code Fault Remedy 14 Thermal Fuse Check gas type of unit and ensure it matches gas type being used. Check for restrictions in air flow around unit and vent terminal. Check for low water flow in a circulating system causing short-cycling. Ensure dip switches 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. Check heat exchanger surface for hot spots which indicate block
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Trouble Shooting for Common Issues I don’t have any hot water when I open the tap. White smoke comes out of the exhaust. Make sure there is gas, water, and electricity to the During colder weather when the exhaust temperature Rinnai water heater (power is turned on and the gas is is much hotter than the outside air, the exhaust fumes turned on). condense producing water vapor. When I was using the hot water, the water got cold. When I open a hot tap, I do not immediately get
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In-line Filter Gas Hot Cold Supply Water Water Line Line Flushing the Heat Exchanger (Error Code: LC or 00) An “LC” or “00” error 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. After flushing, reset the LC fault code by turning off the power to the unit and turning the power back on. KEY 1. Disconnect electrical po
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Installation Instructions Only properly trained and qualified installers RL75e ...................... REU-VB2528WD-US should install this appliance. The warranty may be voided due to improper installation or RL94e ...................... REU-VB2735WD-US installation by a non-qualified installer. R98LSe .................... REU-VA3237W-US Rinnai highly recommends all installers attend a R98LSe-ASME ........ REU-VA3237W-ASME product knowledge class. For information on a Rinnai Traini
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Clearances from Appliance to top to Non- to Combustibles Combustibles Top of 12 inches (305 mm) 2 inches (51 mm) Heater Back of 0 (zero) 0 (zero) Heater to side Front (Panel) 24 inches (610 mm) * 0 inches (0 mm) Front 24 inches (610 mm) 24 inches (610 mm) (Exhaust) Sides of 6 inches (152 mm) 1/8 inch (3.2 mm) Heater to front Ground/ 12 inches (305 mm) 2 inches (51 mm) Bottom * The clearance for servicing is 24 inches in front of the water heater. to gr
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Electrical Connection The water heater must be electrically grounded in accordance with local codes or in the absence of local codes with the most recent edition of the National Electrical Code, ANSI/NFPA 70. In Canada, all electrical wiring should be in accordance with local codes and the Canadian Electrical Code, CSA C22.1 Part 1. Do not rely on the gas or water piping to ground the water heater. A screw is provided in the junction box for the grounding connect
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Gas Piping Pipe Sizing Procedure - Example The gas supply must be capable of handling the entire gas load at the location. Gas line sizing is based on gas type, the pressure drop in the system, the gas pressure supplied, and gas line type. For gas pipe sizing in the United States, refer to the National Fuel Gas Code, NFPA 54. For Canadian gas pipe sizing, refer to the Natural Gas and Propane Installation Code CAN/CSA B149.1. The below information is provided as a
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Water Piping Isolation Valves and Pressure Relief Valve (RL75e and RL94e) The isolation valves provide the ability to isolate the water heater from the structure’s plumbing and allow quick access to flush the heat exchanger. Check with local codes to determine if a pressure and temperature relief valve is required. The included valves meet C American National Standard (ANSI Z21.10.3) / A Canadian Standard (CSA 4.3) and are ANSI/NSF 65 D approved for potable
