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Universal™ low NOx is a family of commercial gas water heaters that are designed to fit into tight retrofit applications.
Unit of Measure

Specifications

Manufacturer

 N/A Rheem®

Tank Capacity

 N/A 72 gal

Input Power

 N/A 250000 BTU/hr

Thermal Efficiency

 N/A 80 %

Standard Approximate Shipping Weight

 N/A 590 lb

ASME Approximate Shipping Weight

 N/A 630 lb

Voltage

 N/A 120 V

Current

 N/A 1.5 A

Working Pressure

 N/A 160 psi

Style

 N/A Universal™ Low NOx

Size

 N/A C

Type

 N/A Natural Gas

Industry Standards

 N/A ANSI Z-21.10.3 - CSA 4.3 ASHRAE Standards 90.1b-2001 ASME Certified CSA® Certified

Maximum Recovery

Recovery at 40 ºF Temperature Rise

 N/A 606 gal/h

Recovery at 50 ºF Temperature Rise

 N/A 485 gal/h

Recovery at 60 ºF Temperature Rise

 N/A 404 gal/h

Recovery at 70 ºF Temperature Rise

 N/A 346 gal/h

Recovery at 80 ºF Temperature Rise

 N/A 303 gal/h

Recovery at 90 ºF Temperature Rise

 N/A 269 gal/h

Recovery at 100 ºF Temperature Rise

 N/A 242 gal/h

Recovery at 110 ºF Temperature Rise

 N/A 220 gal/h

Recovery at 120 ºF Temperature Rise

 N/A 202 gal/h

Recovery at 130 ºF Temperature Rise

 N/A 186 gal/h

Recovery at 140 ºF Temperature Rise

 N/A 173 gal/h

First Time Delivery

First Time Delivery at 100 ºF (5 Minutes)

 N/A 71 gal

First Time Delivery at 100 ºF (10 Minutes)

 N/A 91 gal

First Time Delivery at 100 ºF (15 Minutes)

 N/A 111 gal

First Time Delivery at 100 ºF (20 Minutes)

 N/A 131 gal

First Time Delivery at 100 ºF (30 Minutes)

 N/A 172 gal

First Time Delivery at 100 ºF (45 Minutes)

 N/A 232 gal

First Time Delivery at 100 ºF (60 Minutes)

 N/A 293 gal

First Time Delivery at 100 ºF (120 Minutes)

 N/A 535 gal

First Time Delivery at 100 ºF (180 Minutes)

 N/A 778 gal

Minimum to Recovery Contents

 N/A 18

Dimensions

Schematic

 N/A
Schematic Drawing for Universal™ Low NOx is a Family of Commercial Gas Water Heaters

Dimension A

 N/A 71-1/16 in

Dimension B

 N/A 64-1/2 in

Dimension C

 N/A 26-1/4 in

Dimension D

 N/A 25 in

Dimension E

 N/A 6 in

Dimension F

 N/A 58-5/8 in

Dimension G

 N/A 3/4 in

Dimension H

 N/A 20 in

Top Inlet/Outlet Water Connection

 N/A 1-1/2 in

Front Side Water Connection

 N/A 1-1/2 in

Rear Side Water Connection

 N/A 1-1/2 in

Clearances to Combustibles

Side Clearance to Combustibles

 N/A 6 in

Rear Clearance to Combustibles

 N/A 6 in

Top Clearance to Combustibles

 N/A 12 in

Features and Benefits

Features and Benefits

 N/A The tighter the commercial retrofit, the more you will appreciate how the Universal™'s compact size and multiple water connections simplify low NOx installations. Choose from 80% thermal efficiency models that range from 125,000-399,900 Btu/h and have maximum temperature setting of 180 degrees Fahrenheit.

Space Saver Design
The short heights and narrow jacket diameters, plus the top, front and rear water inlets/outlets offer the ultimate in installation flexibility.

System Sentinel™ LED Diagnostic System
Our exclusive diagnostic system, with glowing LED lights, verifies system operation sequence by sequence.

Patented Technology
Universal’s proprietary steel formulation, patented multi-flue design, combined with two coats of porcelain enamel, results in a superior heat exchanger design.

Low NOx Burner
The power assist burner design incorporates stainless steel multi-port burner tubes for long term low NOx performance, less than 40 ng/J. A sight glass allows for burner observation. A blower guard provides protection against potential post-installation damage. The entire design is removable and it is highly resistant to the effects of negative air pressure common in modern commercial buildings.

Low Profile Automatic Flue Damper
Low profile damper minimizes overall product height. Heavy duty vent hood supports are designed to withstand the rigors of installation.

Full-port, Full-flow Drain Valve
Factory installed brass drain valve allows for faster draining and servicing.

Direct Spark-to-Pilot Ignition System
Energy saving ignition that ignites pilot only when there is a call for heat.

Patented Anode Rods
Anode design utilizes multiple magnesium rods to ensure corrosion resistance for a long tank life.

General Information

General Information

 N/A Efficiency
All models tested according to ANSI test procedures, and meet or exceed the thermal efficiency and standby loss requirements of ASHRAE standard (EPact). Also exceeds energy efficiency codes of all states including California Energy Commission (CEC).

Safety and Construction
Design certified by CSA: For operation at 180 degrees; meets all safety and construction requirement of ANSI Z21.10.3; as an automatic storage or instantaneous water heater; as an automatic circulating tank water heater; and for operation on combustible floors and in alcove installations. Certified for 160 PSI maximum working pressure.

Optional Construction
ASME construction is available on designated models.

Testing and Certifications

Testing and Certifications

 N/A Altitude Certifications
Universal low NOx is certified up to 2,000 feet. High altitude certification for models GN76-200 and GN91-200 is 5,000 feet; and model GN100-200(A) is 8,000 feet

Warranty

Warranty

 N/A
  • 3-Year Limited Tank Warranty.

Note

Note

 N/A Recovery ratings are based on thermal efficiencies obtained in a CSA certified laboratory. (A) indicates available ASME model.

Water heater(s) shall be constructed in accordance with the requirements of the ASME Boiler and Pressure Vessel Code, Section IV Part HLW.

Top-Front-Rear Inlet/Outlet Water Connections.