Outdoor Tankless Water Heater
Operation and Installation Manual
R63LSe .............. |
REU-VA2024WD |
R75LSe .............. |
REU-VA2528WD(A) |
R94LSe .............. |
REU-VA2535WD |
R98LSe .............. |
REU-VA3237W |
R98LSe-ASME ... |
REU-VA3237W-ASME |
Table of Contents...................... |
2 |
Consumer Safety Information ... |
4 |
Operating Instructions ............... |
5 |
Maintenance.............................. |
12 |
Error Codes............................... |
13 |
Installation Instructions.............. |
17 |
Consumer Support .................... |
38 |
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ANS Z21.10.3 |
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CSA 4.3 |
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R98LSe-ASME |
This model has been built in accordance with |
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the requirements of the ASME Boiler and |
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Pressure Vessel Code and have received the |
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Certificate of Authorization from the National |
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Board. The heat exchanger on this unit has |
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the NB and HLW stamps |
Table of Contents
Specifications ..................................................... |
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Consumer Safety Information |
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Safety Definitions............................................. |
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Safety Behaviors and Practices ...................... |
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Safety Features ............................................... |
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Description of Operation ................................... |
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Operating Instructions |
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Features Available on Remote Controllers |
...... 5 |
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Remote Controllers - Models........................ |
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6,7 |
Setting the Temperature.................................. |
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Temperature Options Without |
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a Remote Controller ........................................ |
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Temperature Ranges....................................... |
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Setting the Sound Volume(Voice Prompt) |
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Setting the Clock ............................................. |
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Using the Water Smart /Bath Fill Function |
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Overview ................................................... |
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Setting the Water Volume ......................... |
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Filling the Tub ........................................... |
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Setting Controller to Mute.............................. |
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Maintenance |
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Cleaning .................................................... |
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Air Intake and Exhaust.............................. |
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Motors ....................................................... |
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Remote Controller..................................... |
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Lime / Scale Buildup ................................. |
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Snow Accumulation .................................. |
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Visual Inspection of Flame........................ |
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Error Codes |
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Error Code Table ...................................... |
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Troubleshooting for Common Issues ............ |
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Accessing Operating Information .................. |
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Water Quality ................................................. |
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Flushing the Heat Exchanger ........................ |
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(Error Code: LC or 00) |
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Installation Instructions .................................... |
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General Instructions ....................................... |
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Clearances from Appliance ............................ |
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Attachment of the Water Heater..................... |
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Electrical Connection...................................... |
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Gas Piping |
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General Instructions ................................. |
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Pipe Sizing Procedure - Example ............ |
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Water Piping |
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General Instructions ................................. |
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Pressure Relief Valve............................... |
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Freeze Protection..................................... |
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Freeze Protection Piping ................................ |
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Recommended Piping for Basic Installation...23 |
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Recommended Piping for |
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Circulation Systems........................................ |
24 |
Optional Piping for Circulation Systems......... |
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Flue Terminal Clearances |
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(ANS Z21.10.3 • CSA 4.3)...................... |
26, 27 |
Additional Clearances - Vent Trminal............. |
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High Altitude Installations ............................... |
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Connecting Multiple Water Heaters................ |
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Remote Controller Installation |
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Location .................................................... |
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Configurations .......................................... |
30 |
Cable Lengths and Size ........................... |
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Mounting on the wall ................................ |
31 |
Connecting to the R75LSe, R94LSe, R98LSe, |
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and R98LSe-ASME ..................................... |
31 |
Connecting to the R63LSe ....................... |
32 |
Operating Instructions .................................... |
33 |
Technical Data |
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Pressure Drop Curve...................................... |
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Outlet Flow Data............................................. |
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Space Heating ................................................ |
35 |
Dimensions ..................................................... |
36 |
Ladder Diagram.............................................. |
37 |
Consumer Support |
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Warranty Information...................................... |
38 |
Limited Warranty ..................................... |
38, 39 |
2 |
VA Series Outdoor LS Manual |
Specifications
Model |
R63LSe |
R75LSe |
R94LSe |
R98LSe |
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R98LSe- |
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ASME |
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Minimum Gas Consumption Btu/h |
22,200 |
15,000 |
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19,000 |
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Maximum Gas Consumption Btu/h |
150,000 |
180,000 |
199,000 |
237,000 |
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Hot water capacity (Min - Max) * |
0.6 - 6.3 GPM |
0.6 - 7.5 GPM |
0.6 - 9.4 GPM |
0.6 - 9.8 GPM |
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(2.3 - 24 L/min) |
(2.3 - 28 L/min) |
(2.3 - 35.5 L/min) |
(2.3 - 37 L/min) |
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Hot water capacity, (45ºF rise) |
5.3 GPM |
6.6 GPM |
7.4 GPM |
8.7 GPM |
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(20 L/min) |
(25 L/min) |
(28 L/min) |
(33 L/min) |
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Default Temperature Setting (no controller) |
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120º F (49º C) |
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Remote Controller Default Temperature Setting |
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104º F (40º C) |
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Maximum Temp Setting (Commercial **) |
160º F (71º C) |
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185º F (85º C) |
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Maximum Temp Setting (Residential) |
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140º F (60º C) |
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Minimum Temperature Setting |
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98º F (37º C) |
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Weight |
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36.4 lb |
46 lb |
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55 lb |
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(17 kg) |
(21 kg) |
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(25 kg) |
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Efficiency Rating |
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83.0% |
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Noise level |
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49 dB (A) |
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Normal |
36 W |
50 W |
55 W |
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72 W |
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Electrical |
Standby |
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2 W |
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Consumption |
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Anti-frost Protection |
74 W |
100 W |
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116 W |
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By-Pass Control |
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Fixed |
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Electronic |
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Minimum Gas Supply |
Natural Gas |
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5.0 inch W.C. |
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Pressure |
Propane |
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8.0 inch W.C. |
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Maximum Gas Supply |
Natural Gas |
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10.5 inch W.C. |
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Pressure |
Propane |
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13.5 inch W.C. |
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Type of Appliance |
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Temperature controlled continuous flow gas hot water system. |
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Operation |
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With or without remote controls, mounted in kitchen, bathroom, etc. |
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Approved Gas Type |
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Natural Gas or Propane - Ensure unit matches gas type it's being installed on. |
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Connections |
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Gas Supply: 3/4" MNPT, Cold Water Inlet: 3/4" MNPT, Hot Water Outlet: 3/4" MNPT |
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Ignition System |
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Direct Electronic Ignition |
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Electric Connections |
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Appliance: AC 120 Volts, 60Hz. Remote Control: DC 12 Volts (Digital) |
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Water Temperature Control |
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Simulation Feedforward and Feedback. |
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Water Supply Pressure |
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Minimum Water Pressure: 20 PSI (Recommended 30-80 PSI for maximum performance) |
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Maximum Water Supply Pressure |
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150 PSI |
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Remote Control Cable |
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Non-Polarized Two Core Cable (Minimum 22 AWG) |
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*Minimum flow may vary slightly depending on the temperature setting and the inlet water temperature.
**for commercial and hydronic applications requiring higher temperatures.
Rinnai is continually updating and improving products. Therefore, specifications are subject to change without prior notice.
The maximum inlet gas pressure must not exceed the value specified by the manufacturer. The minimum value listed is for the purpose of input adjustment.
VA Series Outdoor LS Manual |
3 |
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.
DANGER
WARNING
CAUTION
Indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.
Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.
Indicates a potentially hazardous situation which, if not avoided, could result in minor or moderate injury. It may also be used to alert against unsafe practices.
Safety Behaviors and Practices
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Safety Features
•Overheat: The appliance will automatically shut down when the appliance exceeds a predetermined temperature.
•Flame Failure: The appliance will automatically shut down if the burner flame is extinguished.
•Power Failure: The appliance will cut off the gas if it loses electrical power.
•Power Surge Fuse: A glass fuse protects against overcurrent. If the fuse blows then all indicator lamps will be off.
•Fusible Link: In case the overheat feature does not prevent the temperature from rising then the fusible link will break shutting off the appliance.
4 |
VA Series Outdoor LS Manual |
Description of Operation
The Rinnai water heater is one of the most advanced water heaters available. It provides a continuous supply of hot water at a preset temperature. This appliance is direct vent where air is brought in from the outside and combustion gases are exhausted to the outside.
While electricity, water, and gas supplies are connected, the Rinnai water heater produces hot water whenever a hot water tap is open.
Ignition is electronic. There is no pilot light consuming gas while the water heater is not being used. The gas burner lights automatically when the hot water tap is opened and goes out when the tap is closed.
Installation of the remote controller is highly recommended. The remote controller can set the temperature within a specific range and can provide error codes to diagnose any problems.
The temperature of the outgoing hot water is constantly monitored. The Rinnai water heater may adjust the water flow in order to maintain the temperature setting. The water flow may vary from summer to winter due to the difference in ground water temperature.
Operating Instructions
Features Available on Remote Controllers
The MC-91-1US remote controller is supplied with the appliance. Additional functions are available through the use of optional controllers.
Features
Call
Clock
Error Codes
Function
In Use Indicator
ON/OFF Button
Power Save
Priority Button /
Indicator
Sound Volume
Temperature Display
Thermostat
Water Smart / Bath Fill
Button / Indicator
Water Volume
91-MC |
91-MCC |
100-MC |
100-BC |
502-MC |
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Description
Sends a short series of beeps to all controllers in the system. It is not an intercom.
12 hour AM/PM clock.
When a fault is detected an error code flashes at the temperature display on models MC-91, MCC-91, and MC-502; and flashes at the clock display on models MC-100 and BC-100.
Used on this model to set the clock or sound volume.
Indicates that hot water is being supplied (i.e. a hot water tap is open)
Used to turn the water heater ON or OFF.
Allows the remote controller to be in an energy saving mode.
Indicates that this controller is setting the temperature . Priority can be switched to another controller by pressing its Priority Button when no hot water is running.
Used to adjust the voice prompt volume.
Shows the temperature setting.
Increases or decreases the temperature setting.
Used to select the Water Smart / Bath Fill Function to fill a bath with a predetermined volume of water.
Used to select the water volume for the Water Smart / Bath Fill Function.
VA Series Outdoor LS Manual |
5 |
Remote Controllers - Models
MC-91-1US & MCC-91-1US
Dimensions (inches): 3.5 W x 4.75 H x 0.75 D
The MC-91 controller allows a maximum temperature setting of 140º F. 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. Refer to the section on temperature ranges.
In Use
Indicator
Priority
Indicator
Temperature
Display
Priority
Button
Thermostat
ON/OFF
Button
MC-502RC-1US-S * (Wireless)
Dimensions (inches): 4.33 W x 5.90 H x 1.16 D
Temperature
Display
Thermostat
ON/OFF
Button
*Requires the transceiver, MC-502RC-1US-M, to be connected to the water heater.
Priority
Indicator
In Use
Indicator
Priority
Button
Refer to the MC-502RC-1US-S manual and the Wireless Controller Installation Instructions for complete details on features, operation, and installation.
6 |
VA Series Outdoor LS Manual |
Remote Controllers - Models
BC-100V-1US
Dimensions (inches): 8.0 W x 4.125 H x 0.875 D
In Use |
Temperature |
Water Smart |
Indicator |
Display |
Bath Fill Indicator |
Priority |
ON/OFF |
Button and |
Button |
Indicator |
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Water Smart |
Call |
Bath Fill |
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Button |
Clock |
Power Save |
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Water Volume |
Thermostat |
Sound Volume |
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MC-100V-1US
Dimensions (inches): 5.0 W x 4.75 H x 0.75 D
Thermostat
In Use
Indicator
Function
Temperature
Display
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Priority Button |
Clock |
and Indicator |
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ON/OFF |
Call |
Button |
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VA Series Outdoor LS Manual |
7 |
Setting the Temperature
DANGER
1. Press the “Priority button” on the remote controller. The green Priority light will glow indicating that this controller is controlling the temperature and that the Rinnai water heater is ready to supply hot water.
The priority can only be changed while no hot water is running.
2.Press the or buttons to obtain the desired temperature setting.
All hot water sources are able to provide water at this temperature setting until it is changed again at this or another remote controller.
Temperature Options Without a Remote Controller
The default temperature setting for this appliance installed without a remote controller is 120º F (49º C). If desired the temperature setting can be changed to 140º F (60º C) by adjustment of a dip switch.
Set dip switch 5 to ON to obtain 140º F water temperature setting.
Set dip switch 5 to OFF (default) to obtain 120º F water temperature setting.
120º F (49º C) |
140º F (60º C) |
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Switch No. |
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Switch No. |
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ON |
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ON |
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8 |
VA Series Outdoor LS Manual |
Temperature Ranges
This water heater will attempt to provide hot water at the temperature even when the water flow is varied or when more than 1 tap is in use. The water heater can deliver water at only one temperature setting at a time. The available temperatures for a given model are provided below.
Model |
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Temperature Settings Available (ºF) |
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R63LSe |
98 |
100 |
102 |
104 |
106 |
108 |
110 |
115 |
120 |
125 |
130 |
135 |
140 |
150 |
160 |
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R75LSe |
98 |
100 |
102 |
104 |
106 |
108 |
110 |
115 |
120 |
125 |
130 |
135 |
140 |
150 |
160 |
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R94LSe |
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R98LSe |
98 |
100 |
102 |
104 |
106 |
108 |
110 |
115 |
120 |
125 |
130 |
135 |
140 |
150 |
160 |
185 |
R98LSe-ASME |
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Temp in Celsius ºC |
37 |
38 |
39 |
40 |
41 |
42 |
43 |
46 |
49 |
52 |
54 |
57 |
60 |
66 |
71 |
85 |
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*These settings require the MCC-91 controller. When the MCC-91 controller is connected, these higher temperature are available on all controller models in the system.
If a space heating application requires higher than 140º F then a mixing valve shall be installed to temper the water temperature to 140º F or less for domestic use.
Suggested temperatures are
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Kitchen |
120 ºF (49º C) |
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Shower |
98º - 110º F (37º - 43º C) |
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Bath Fill |
102º - 110º F (39º - 43º C) |
These temperatures are suggestions only.
Temperature lower than 98º F (37º 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.
Setting the Sound Volume (Voice Prompt)
MC-100V Press the “Function” button to adjust the voice prompt volume. The default sound volume is set to Medium. Each subsequent press of the or button cycles through the volume levels in the order below.
BC-100V Press the “Sound Vol.” button to adjust the voice prompt volume. The default sound volume is set to Medium. Each subsequent press of the button cycles through the volume levels in the order below.
Setting the Clock
MC-100V Press the “Function” button twice within 10 seconds to set the clock. Press the or button to reach the desired time. The clock on the BC-100V automatically shows
the time which has been set on the MC-100V.
VA Series Outdoor LS Manual |
9 |
Using the Water Smart / Bath Fill Function
Overview
This function is exclusive to the BC-100V remote controller. The bath fill function allows the consumer to fill a tub with a preset volume of water at a preset temperature. This is done by pressing the bath fill button on the BC-100V controller while no hot water is flowing and then opening only the hot water tap. The water heater will cease the hot water flow when the preset volume has been reached. The hot water tap should then be closed and the bath fill button pressed.
The temperature settings for the bath fill function are limited to those in the table below.
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Bath Fill Temperature Settings Available |
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ºF |
98 |
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100 |
102 |
104 |
106 |
108 |
110 |
115 |
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120 |
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ºC |
37 |
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38 |
39 |
40 |
41 |
42 |
43 |
46 |
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49 |
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Setting the Water Volume
The default volume is set to 25 gallons. The volume can be set between 10 and 120 gallons.
1. Press the “Priority button” on the remote controller. The green Priority light will glow indicating that this controller is controlling the temperature and that the Rinnai water heater is ready to supply hot water.
2.Press the “Temp” or buttons to obtain the desired temperature
setting.
3.Press the “Water Vol.” or buttons to obtain the desired
water volume in gallons.
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10 |
VA Series Outdoor LS Manual |
Using the Water Smart / Bath Fill Function
Filling the Tub
ON! COLD
HOT
ON! COLD
HOT
1.Press the “Water Smart / Bath Fill” button once. The button will illuminate, a tone will sound, and the word “Bath” will appear next to the temperature setting.
2.The voice prompt will announce “The hot water system is ready. Open the hot water tap.”
Open the hot water tap. The “In Use” indicator will illuminate on all controllers. The hot water will begin to flow.
3.When the preset volume of water has been produced then
•the water flow will cease
•the “Water Smart / Bath Fill” button will flash
•a tone will sound
•the voice prompt will announce, “Bath fill is complete. Turn off the bath hot water tap and push the Bath Fill button.”
4. Turn off the bath hot water tap and push the Bath Fill button. The water heater will not allow hot water to flow from any source until the “Water Smart / Bath Fill” button is pushed.
The button light will go out and the word “Bath” will disappear from the display.
Setting Controller to Mute
Models MC-91 and MCC-91
To eliminate the beeps when keys are pressed or to turn the beeps back on, press and hold both the and buttons until a beep is heard (approximately 5 seconds).
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Maintenance
Repairs should be performed by a qualified service technician. The appliance should be inspected annually by a qualified service technician. Verify proper operation after servicing.
Cleaning
It is imperative that control compartments, burners, and circulating air passage ways of the appliance be kept clean.
Clean as follows:
1.Turn off and disconnect electrical power. Allow to cool.
2.Remove and clean the water inlet filter.
3.Remove the front panel by removing 4 screws.
4.Use pressurized air to remove dust from the main burner, heat exchanger, and fan blades. Do not use a wet cloth or spray cleaners on the burner. Do not use volatile substances such as benzene and thinners. They may ignite or fade the paint.
5.Use soft dry cloth to wipe cabinet.
Air Intake and Exhaust
The air intake and exhaust should be inspected at least annually for blockages or damage.
Motors
Motors are permanently lubricated and do not need periodic lubrication. Keep fan and motor free of dust and dirt by cleaning annually.
Remote Controller
Use a soft damp cloth to clean the remote controller. Do not use solvents.
Lime/Scale Buildup
If you receive Error Code “LC”, refer to the procedure,
Flushing the Heat Exchanger. Refer to the section on
Water Quality to see if your water needs to be treated or conditioned. (When checking maintenance code history “00” is substituted for “LC”.)
Snow Accumulation
Keep the area around flue terminal free of snow and ice. The appliance will not function properly if the intake air or exhaust is impeded (blocked or partially blocked) by obstructions.
Visual Inspection of Flame
The burner must flame evenly over the entire surface when operating correctly. The flame must burn with a clear, blue, stable flame. See the parts breakdown of the burner for the location of the view ports.
The flame pattern should be as shown in the figures below.
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