Available in 90 Gallon Tank-Type Models

Xtreme High-Input Gas Commercial Water Heaters

550,000 BTU/Hr. thru 715,000 BTU/Hr.

Xtreme Gas Commercial Water Heaters are specifically designed to minimize the difficulty of replacing failed water heaters and are versatile for new installations. These products are designed for applications requiring large quantities of hot water.

Construction Features:

GX90-550 and

GX90-640 Comply

With SCAQMD Rule 1146.2 for Low NOx Emissions

Small

Jacket Diameters

•Space saving tank design – maximizes installation adaptability by offering models with front side and rear side inlet/outlet water connections. Short heights and small jacket diameters result in greater installation flexibility.

•Patented multi-flue tank design

– proprietary steel formulation, patented multi-flue design, and two coats of high temperature porcelain enamel to maximize corrosion resistance result in a superior heat exchanger design.

•Low profile automatic flue damper –

low profile design minimizes over- all product height. Heavy duty vent hood supports are designed to withstand rigors of installation.

•Specialized burner assembly –

each model features five premix burners mounted into a metal face plate and sealed with a Viton gasket. Patented “quick release” manifold for easier service.

•Spark-To-Pilot ignition system – Standard on all models. Provides reliable and energy saving ignition sequencing by igniting the pilot only when the thermostat calls for heat.

•System Sentinel™ LED diagnostic system –

Our exclusive diagnostic system, with glowing LED lights, verifies system operation sequence

by sequence.

•Full port, full flow brass drain valve

Short Floor-to-Vent

Heights

Multiple Water

Connection Options

(On Selected

Models)

Certifications and Ratings:

•Efficiency – these models have been tested according to ANSI test procedures, and exceed the thermal efficiency and standby loss requirements of current ASHRAE standards (Part of the Federally mandated Energy Policy Act (EPact)). Also exceeds energy efficiency codes of all states.

•Safety and construction – These products are design certified by U.L.: a) For operation at 180°F. b) To meet all safety and construction requirements of ANSI Z21.10.3-2001 c) As an automatic storage or instantaneous water heater. d) As an automatic circulating tank water heater. e) For operation on combustible floors and in alcove installations.

CERTIFIED FOR A 150 PSI MAXIMUM WORKING PRESSURE (160 PSI FOR ASME MODELS).

Continued next page.

GX90-550, GX90-640 specifications

The Rheem GX90-640 and GX90-550 are two of the most efficient gas furnaces on the market, designed to provide homeowners with reliable heating while maximizing energy efficiency. Both models incorporate advanced technologies that enhance their performance, making them suitable for various home sizes and heating demands.

The primary feature of the Rheem GX90 series is its high-efficiency rating. With AFUE (Annual Fuel Utilization Efficiency) ratings of up to 90%, these units are designed to convert a significant portion of the fuel they use into heat, ensuring that homeowners experience lower energy bills compared to standard furnaces. The GX90-640 can deliver up to 64,000 BTU of heating output, while the GX90-550 offers a robust output of 55,000 BTU, making both units adaptable to different heating requirements.

One of the standout technologies utilized in these models is the two-stage heating system. This feature allows the furnace to operate on a lower setting during milder conditions, providing energy savings and consistent comfort. During colder weather, it automatically shifts to high capacity, ensuring adequate warmth when needed. The modulating gas valve enhances this capability by adjusting the gas flow based on the heating demand, optimizing efficiency and comfort.

Both the GX90-640 and GX90-550 are equipped with a reliable hot surface ignitor and a multi-speed blower motor. The hot surface ignitor ensures a quick and dependable startup, while the multi-speed blower cycles air more quietly and uniformly throughout the home. This not only improves comfort but can also improve the overall indoor air quality.

Durability is another key characteristic of Rheem's GX90 series. These units feature robust construction with a compact design, making installation more flexible while ensuring long-lasting performance. The units also come with a corrosion-resistant cabinet, protecting them from the elements and extending their lifespan.

Easy maintenance is built into the design of the GX90-640 and GX90-550. Both models have accessible components, making inspections and repairs straightforward for technicians. Moreover, Rheem offers a comprehensive warranty, providing homeowners with peace of mind regarding their investment.

In conclusion, Rheem's GX90-640 and GX90-550 gas furnaces stand out for their efficiency, advanced technologies, and durability. They provide homeowners with a reliable heating solution that prioritizes comfort and cost-effectiveness, making them an ideal choice for modern heating needs.

Rheem GX90-550 manual Available in 90 Gallon Tank-Type Models, Certifications and Ratings

Models: GX90-550 GX90-640