Rheem Xtreme GX90-550 Manual

Xtreme is a family of high-input, fast recovery
™
commercial water heaters that complies
with Low NOx Emissions
Features & Benefits
Xtreme is an advanced line of fast
recovery commercial gas water heaters.
These products can deliver up to 756
gallons per hour at 100 degree F rise.
The small jacket diameter makes it a
popular choice for retro fits and it is a
versatile choice for new construction.
Models range from 500,000-715,000
Btu/h, with a maximum temperature
setting of 180 degrees Fahrenheit.
Space Saver Design
Xtreme maximizes installation
adaptability by offering models with
front and rear inlet/outlet water
connections. Short heights and small
jacket diameters result in greater
installation flexibility.
System
Sentinel LED
™
Diagnostic
System
Our exclusive
diagnostic system,
with glowing LED
lights, verifies system
operation sequence by sequence.
Patented Multi-Flue Tank
Design
Proprietary steel formulation, patented
multi-flue design, and two coats of high
temperature porcelain enamel maximize
corrosion resistance and result in a
superior heat exchanger design.
Automatic Flue Damper
Low profile design minimizes overall
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.
Direct Spark-to-Pilot
Ignition System
Energy saving ignition that ignites pilot
only when there is a call for heat.
Round Premix Burners
Precision burners are formed from high
chromium stainless steel.
Low NOx Emissions
GX90-550 and GX90-640 meet low
NOx emissions of less than 40 ng/J.
Full-port, Full-flow Drain Valve
Factory installed brass drain valve
allows for faster draining and servicing.
Altitude Certifications
Standard Natural and LP models are
certified up to 2,000 feet. High altitude
models, 8,000 feet.
Anode Rods
Patented design utilizes multiple
magnesium rods to ensure long life and
corrosion resistance.
Warranty
3-Year limited tank warranty
See Commercial Warranty Certificate for
complete information.
Efficiency | All 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 150 PSI maximum working pressure
(160 PSI for ASME models).
Continued next page
I N TE GRATE D HOM E C OM FO RT I NTE G RATE D A I R & W A T E R
Commercial Gas
Water
INT EG RAT ED HO ME CO MF O RT
Xtreme Water Heaters
Rheem Xtreme
90-Gallon Capacity
500,000-715,000 Btu/h
Low NOx
Natural and LP Gas
(On Selected
Models)
PRINTED IN U.S.A. 03/15 WP FORM NO. RR102C-15 Rev. 11