The Rheem Ultra 28L Internal provides a powerful and discreet hot water solution for large Australian homes. Rheem engineered this 864B28 model to sit inside your property to save outdoor space. Specifically, it delivers a massive 28 litres of hot water per minute. This capacity easily handles the demands of three bathrooms and a laundry at once. You will never experience a cold shower during peak morning hours again. This system heats water instantly only when you turn on a tap. Consequently, you reduce your energy bills by avoiding the cost of a large storage tank. High-demand households trust this unit for its incredible speed and reliability
Rheem Ultra 28L Internal Gas Continuous Flow Water Heater : 60°C preset 864B28
Available Variations:
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Key Hot Water System Features
Remote Temperature Controller Options
Optional remote temperature controllers allow convenient adjustment of water temperature for the kitchen, bathroom, and other areas, ensuring safety and comfort, particularly for households with children.
Indoor Installation
Designed specifically for indoor installation, the Ultra 28L integrates seamlessly with your home’s infrastructure. It requires appropriate flue components to meet Australian standards and maintain optimal performance while maximising space efficiency.
Natural Gas Compatible
Operating on natural gas, this unit provides a cost-effective and widely available energy source, delivering consistent hot water while supporting an environmentally conscious home.
Product Documents
Advanced Safety Features
Flamesafe® Overheat Protection: Automatically shuts down the unit in case of overheating, providing peace of mind and enhanced household safety. Temperature Limiting: A preset 60°C limit reduces the risk of scalding while maintaining safe and comfortable water temperature.
Consistent Temperature Control
Rheem Q Factor™ technology ensures rapid and steady hot water delivery with minimal temperature fluctuations, supporting busy households with high hot water demands.
Consistent and Reliable Hot Water
Rheem Q Factor™ technology ensures rapid and steady hot water delivery with minimal temperature fluctuations, supporting busy households with high hot water demands.
Hassle-Free Installation
This indoor unit requires professional installation with suitable flue components. Correct installation ensures compliance with Australian standards, safe operation, and easy connection to your existing plumbing and gas systems.
Maintenance
Routine servicing by a qualified technician is recommended to maintain efficiency and longevity. This should include inspection of flue components, gas connections, burners, and temperature controls to ensure safe and reliable operation.
Comprehensive Warranty
For domestic installations, the system includes 15 years parts and 3 years labour coverage on the heat exchanger, along with 3 years parts and labour on all other components. For non-domestic installations, the heat exchanger and all other components are covered by a 1-year parts and labour warranty, ensuring reliable protection for both residential and commercial applications.
Frequently Asked Questions
What is the minimum operating flow rate?
The unit requires a minimum flow rate of 1.5 litres per minute, ensuring efficient activation and reliable hot water delivery.
How much gas does the Rheem Ultra consume?
The nominal gas consumption is 205 megajoules per hour (MJ/hr), balancing efficient energy use with consistent hot water supply.
What is the maximum water supply pressure?
The Rheem Ultra can accommodate a maximum water supply pressure of 1000 kilopascals (kPa), ensuring reliable operation under high-pressure conditions.
Ready to Upgrade Your Hot Water System?
Upgrade your hot water system today with the Rheem Ultra 28L Internal Gas Continuous Flow Water Heater. Contact SunCity Hot Water for expert advice and assistance in choosing the right solution for your home’s needs. Enjoy continuous comfort and reliable hot water supply.