Tankless RU98EP - Water heater Rinnai - Free user manual and instructions
Find the device manual for free Tankless RU98EP Rinnai in PDF.
Pick your language and provide your email: we'll send you a specifically translated version.
| Type of product | Tankless Water Heater |
| Brand | Rinnai |
| Model | RU98EP |
| Installation Type | Outdoor |
| Fuel Type | Propane Gas (LPG) |
| Uniform Energy Factor (UEF) | 0.82 |
| Maximum Flow Rate | 9.8 GPM at 35°F rise |
| Minimum Flow Rate | 0.4 GPM |
| Gas Input Rate | 199,000 BTU/h |
| Water Connections | 3/4" NPT |
| Gas Connection | 3/4" NPT |
| Electrical Supply | 120V AC, 60 Hz |
| Power Consumption | 75 W |
| Dimensions (H x W x D) | 27.6" x 18.5" x 9.5" |
| Weight (Empty) | 64 lbs |
| Venting | No venting required for outdoor installation |
| Key Features | Condensing technology, continuous hot water, digital temperature control, Comfy™ demand recirculation, ultra-low NOx emissions |
| Maintenance | Annual descaling and flushing recommended |
| Safety Features | Flame lockout, freezeless protection, overheat protection, exhaust temperature limit |
| Spare Parts & Repairability | Available through Rinnai dealer network |
| Warranty | 12-year residential heat exchanger, 5-year parts, 1-year labor |
Frequently Asked Questions - Tankless RU98EP Rinnai
How often should I flush my Rinnai RU98EP tankless water heater?
It is recommended to flush the unit annually to remove mineral scale buildup. Use a descaling solution like vinegar or a commercial product, and follow the manufacturer's instructions to maintain performance and lifespan.
Does the RU98EP require venting?
As an outdoor model, the RU98EP does not require any venting. It is designed to be installed outside, so exhaust gases are discharged directly into the open air. For indoor installation, choose an indoor-rated model like the RU98iP.
What type of gas does the RU98EP use?
The RU98EP runs on propane gas (LPG). If you need a natural gas model, look for the RU98EN designation. Always confirm the gas type before installation to ensure compatibility with your supply.
How much hot water can the RU98EP produce?
The RU98EP delivers up to 9.8 gallons per minute at a 35°F temperature rise. This makes it suitable for running multiple fixtures or appliances simultaneously, though the flow rate decreases with higher temperature rises.
How do I adjust the water temperature on my RU98EP?
You can set the output temperature using the digital control panel on the unit or via the optional wireless controller. Adjusting the temperature is straightforward and allows precise control from 99°F to 140°F, depending on your needs.
Does the RU98EP have a built-in recirculation pump?
The RU98EP features Comfy™ demand recirculation, which can be enabled to provide instant hot water at the tap. It uses a crossover valve and the unit's internal pump to circulate water until hot, reducing wait time.
What error codes might appear and what do they mean?
Common error codes on Rinnai tankless units include Ignition failure (code 11), overheating (code 12), manual reset (code 14), and flame sensor issues (code 63). Consult the manual for a full list and troubleshooting steps.
Can I install the RU98EP indoors?
No, the RU98EP is designed for outdoor installation only. If you need an indoor unit, consider the RU98iP (propane) or RU98iN (natural gas). Installing an outdoor model indoors violates safety codes and can lead to dangerous exposure to exhaust gases.
How do I winterize the RU98EP?
The RU98EP has freeze protection that uses an electric heater to prevent freezing in cold climates. If you plan to drain the unit for storage, turn off the gas and power, close the gas valve, and open the hot water tap until all water is empty.
What maintenance does the RU98EP require beyond flushing?
In addition to annual descaling, regularly clean the water filter and check the air filter if installed. Inspect the unit for any leaks, ensure the venting area is clear of debris, and schedule professional service if you notice error codes or performance issues.
User questions about Tankless RU98EP Rinnai
0 question about this device. Answer the ones you know or ask your own.
Ask a new question about this device
No questions yet. Be the first to ask one.
Download the instructions for your Water heater in PDF format for free! Find your manual Tankless RU98EP - Rinnai and take your electronic device back in hand. On this page are published all the documents necessary for the use of your device. Tankless RU98EP by Rinnai.
USER MANUAL Tankless RU98EP Rinnai
Manual assistant
Powered by Anthropic
Waiting for your message
Product information
Brand : Rinnai
Model : Tankless RU98EP
Category : Water heater